Document:

EXHIBIT 4.1
                                   -----------

                      The Pooling and Servicing Agreement.

<PAGE>

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                                INDYMAC MBS, INC.
                                    Depositor

                              INDYMAC BANK, F.S.B.
                               Seller and Servicer

                      DEUTSCHE BANK NATIONAL TRUST COMPANY
                                     Trustee

                    ________________________________________

                         POOLING AND SERVICING AGREEMENT
                            Dated as of June 1, 2007
                    ________________________________________

                        INDYMAC IMJA MORTGAGE LOAN TRUST
                                     2007-A1

                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 Series 2007-A1

================================================================================

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                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----

ARTICLE ONE DEFINITIONS........................................................5

    Section 1.01   Definitions.................................................5
    Section 1.02   Rules of Construction......................................35

ARTICLE TWO CONVEYANCE OF MORTGAGE LOANS; REPRESENTATIONS AND WARRANTIES......37

    Section 2.01   Conveyance of Mortgage Loans...............................37
    Section 2.02   Acceptance by the Trustee of the Mortgage Loans............40
    Section 2.03   Representations, Warranties, and Covenants of
                   the Seller and the Servicer................................42
    Section 2.04   Representations and Warranties of the Depositor
                   as to the Mortgage Loans...................................44
    Section 2.05   Delivery of Opinion of Counsel in Connection
                    with Substitutions........................................44
    Section 2.06   Execution and Delivery of Certificates.....................44
    Section 2.07   REMIC Matters..............................................45

ARTICLE THREE ADMINISTRATION AND SERVICING OF MORTGAGE LOANS..................46

    Section 3.01   Servicer to Service Mortgage Loans.........................46
    Section 3.02   [Reserved].................................................47
    Section 3.03   Rights of the Depositor and the Trustee in Respect
                   of the Servicer............................................47
    Section 3.04   [Reserved].................................................47
    Section 3.05   Trustee to Act as Servicer.................................47
    Section 3.06   Collection of Mortgage Loan Payments; Certificate
                   Account; Distribution Account..............................47
    Section 3.07   Collection of Taxes, Assessments and Similar Items;
                   Escrow Accounts............................................50
    Section 3.08   Access to Certain Documentation and Information
                   Regarding the Mortgage Loans...............................51
    Section 3.09   Permitted Withdrawals from the Certificate Account and
                   the Distribution Account...................................51
    Section 3.10   Maintenance of Hazard Insurance; Maintenance of
                   Primary Insurance Policies.................................52
    Section 3.11   Enforcement of Due-On-Sale Clauses; Assumption Agreements..54
    Section 3.12   Realization Upon Defaulted Mortgage Loans..................55
    Section 3.13   Trustee to Cooperate; Release of Mortgage Files............57
    Section 3.14   Documents, Records and Funds in Possession of
                   the Servicer to be Held for the Trustee....................57
    Section 3.15   Servicing Compensation.....................................58
    Section 3.16   Access to Certain Documentation............................58
    Section 3.17   Annual Statement as to Compliance..........................58
    Section 3.18   Errors and Omissions Insurance; Fidelity Bonds.............58
    Section 3.19   [Reserved].................................................59
    Section 3.20   Prepayment Charges.........................................59
    Section 3.21   Late Payment Fees..........................................59

                                       i
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ARTICLE FOUR DISTRIBUTIONS AND ADVANCES BY THE SERVICER.......................61

    Section 4.01   Advances...................................................61
    Section 4.02   Priorities of Distribution.................................62
    Section 4.03   [Reserved].................................................66
    Section 4.04   [Reserved].................................................66
    Section 4.05   Allocation of Realized Losses..............................66
    Section 4.06   Monthly Statements to Certificateholders...................67
    Section 4.07   [Reserved].................................................70
    Section 4.08   [Reserved].................................................70
    Section 4.09   Determination of Pass-Through Rates for LIBOR Certificates.70

ARTICLE FIVE THE CERTIFICATES.................................................73

    Section 5.01   The Certificates...........................................73
    Section 5.02   Certificate Register; Registration of Transfer and
                   Exchange of Certificates...................................73
    Section 5.03   Mutilated, Destroyed, Lost or Stolen Certificates..........77
    Section 5.04   Persons Deemed Owners......................................77
    Section 5.05   Access to List of Certificateholders' Names and Addresses..77
    Section 5.06   Maintenance of Office or Agency............................78

ARTICLE SIX THE DEPOSITOR AND THE SERVICER....................................79

    Section 6.01   Respective Liabilities of the Depositor and the Servicer...79
    Section 6.02   Merger or Consolidation of the Depositor or the Servicer...79
    Section 6.03   Limitation on Liability of the Depositor, the Seller,
                   the Servicer, and Others...................................79
    Section 6.04   Limitation on Resignation of the Servicer..................80

ARTICLE SEVEN DEFAULT.........................................................81

    Section 7.01   Events of Default..........................................81
    Section 7.02   Trustee to Act; Appointment of Successor...................82
    Section 7.03   Notification to Certificateholders.........................83

ARTICLE EIGHT CONCERNING THE TRUSTEE..........................................85

    Section 8.01   Duties of the Trustee......................................85
    Section 8.02   Certain Matters Affecting the Trustee......................85
    Section 8.03   Trustee Not Liable for Certificates or Mortgage Loans......87
    Section 8.04   Trustee May Own Certificates...............................87
    Section 8.05   Trustee's Fees and Expenses................................87
    Section 8.06   Eligibility Requirements for the Trustee...................88
    Section 8.07   Resignation and Removal of the Trustee.....................88
    Section 8.08   Successor Trustee..........................................89
    Section 8.09   Merger or Consolidation of the Trustee.....................90
    Section 8.10   Appointment of Co-Trustee or Separate Trustee..............90
    Section 8.11   Tax Matters................................................91

ARTICLE NINE TERMINATION......................................................94

                                       ii
<PAGE>

    Section 9.01   Termination upon Liquidation or Purchase of
                   the Mortgage Loans.........................................94
    Section 9.02   Final Distribution on the Certificates.....................94
    Section 9.03   Additional Termination Requirements........................96

ARTICLE TEN MISCELLANEOUS PROVISIONS..........................................97

    Section 10.01  Amendment..................................................97
    Section 10.02  Recordation of Agreement; Counterparts.....................98
    Section 10.03  Governing Law..............................................99
    Section 10.04  Intention of Parties.......................................99
    Section 10.05  Notices....................................................99
    Section 10.06  Severability of Provisions................................100
    Section 10.07  Assignment................................................100
    Section 10.08  Limitation on Rights of Certificateholders................100
    Section 10.09  Inspection and Audit Rights...............................101
    Section 10.10  Certificates Nonassessable and Fully Paid.................101
    Section 10.11  Official Record...........................................101
    Section 10.12  Protection of Assets......................................102
    Section 10.13  Qualifying Special Purpose Entity.........................102

ARTICLE ELEVEN EXCHANGE ACT REPORTING........................................103

    Section 11.01  Filing Obligations........................................103
    Section 11.02  Form 10-D Filings.........................................103
    Section 11.03  Form 8-K Filings..........................................104
    Section 11.04  Form 10-K Filings.........................................104
    Section 11.05  Sarbanes-Oxley Certification..............................107
    Section 11.06  Form 15 Filing............................................107
    Section 11.07  Report on Assessment of Compliance and Attestation........107
    Section 11.08  Use of Subcontractors.....................................108
    Section 11.09  Amendments................................................109

                                      iii
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                                    SCHEDULES
Schedule I:   Mortgage Loan Schedule.......................................S-I-1

Schedule II:  Representations and Warranties of the Seller/Servicer.......S-II-1

Schedule III: Representations and Warranties as to the Mortgage Loans....S-III-1

Schedule IV:  Principal Balance Schedules.................................S-IV-1

Schedule V:   Form of Monthly Report.......................................S-V-1

                             EXHIBITS

Exhibit A:    Form of Senior Certificate (other than the Notional
              Amount Certificates)...........................................A-1

Exhibit B:    Form of Subordinated Certificate...............................B-1

Exhibit C:    Form of Class A-R Certificate..................................C-1

Exhibit D:    Form of Notional Amount Certificate............................D-1

Exhibit E:    Form of Reverse of Certificates................................E-1

Exhibit F-1:  Form of Class P Certificates.................................F-1-1

Exhibit F-2:  Form of Class L Certificates.................................F-2-1

Exhibit G-1:  Form of Initial Certification of Trustee ....................G-1-1

Exhibit G-2:  Form of Delay Delivery Certification.........................G-2-1

Exhibit H:    Form of Final Certification of Trustee.........................H-1

Exhibit I:    Form of Transfer Affidavit.....................................I-1

Exhibit J:    Form of Transferor Certificate.................................J-1

Exhibit K:    Form of Investment Letter (Non-Rule 144A)......................K-1

Exhibit L:    Form of Rule 144A Letter.......................................L-1

Exhibit M:    Form of Request for Release (for Trustee)......................M-1

Exhibit N:    Request for Release of Documents...............................N-1

Exhibit O-1:  Form of Certificate to be Provided by the Depositor
              with Form 10-K...............................................O-1-1

Exhibit O-2:  Form of Trustee's Officer's Certificate......................O-2-1

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Exhibit P:    [Reserved].....................................................P-1

Exhibit Q     Reporting Responsibility.......................................Q-1

Exhibit R:    Form of Performance Certification (Trustee)....................R-1

Exhibit S:    Form of Servicing Criteria to Be Addressed in                  S-1
              Assessment of Compliance Statement....................

Exhibit T:    List of 1119 Parties...................................        T-1

Exhibit U:    Form of Sarbanes-Oxley Certification (Replacement of
              Servicer)..............................................        U-1

                                       v
<PAGE>

     THIS POOLING AND SERVICING AGREEMENT, dated as of June 1, 2007, among
INDYMAC MBS, INC., a Delaware corporation, as depositor (the "Depositor"),
IndyMac Bank, F.S.B. ("IndyMac"), a federal savings bank, as seller (in that
capacity, the "Seller") and as Servicer (in that capacity, the "Servicer"), and
Deutsche Bank National Trust Company, a national banking association, as trustee
(the "Trustee"),

                         W I T N E S S E T H   T H A T

     In consideration of the mutual agreements set forth in this Agreement, the
parties agree as follows:

                   P R E L I M I N A R Y   S T A T E M E N T

     The Depositor is the owner of the Trust Fund that is hereby conveyed to the
Trustee in return for the Certificates. The Trust Fund (exclusive of any amounts
in respect of waived Prepayment Charges paid by the Servicer to the Class P
Certificates pursuant to Section 3.20(b) and any amounts in respect of waived
Late Payment Fees paid by the Servicer to the Class L Certificates pursuant to
Section 3.21(b)) for federal income tax purposes will consist of one REMIC (the
"Master REMIC"). Each Certificate, other than the Class A-R and Class L
Certificates, will represent ownership of one or more regular interests in the
Master REMIC for purposes of the REMIC Provisions. The Class A-R Certificate
represents ownership of the sole class of residual interest in each REMIC
created under this Agreement. The Master REMIC will hold as assets all property
of the Trust Fund (exclusive of any amounts in respect of waived Prepayment
Charges paid by the Servicer to the Class P Certificates pursuant to Section
3.20(b) and any amounts in respect of waived Late Payment Fees paid by the
Servicer to the Class L Certificates pursuant to Section 3.21(b)). For federal
income tax purposes, each Certificate (other than the Class A-R and Class L
Certificates) is hereby designated as a regular interest in the Master REMIC.
The latest possible maturity date of all REMIC regular interests created in this
Agreement shall be the Latest Possible Maturity Date. All amounts in respect of
waived Prepayment Charges paid by the Servicer to the Class P Certificates
pursuant to Section 3.20(b) will be treated as paid directly by the Servicer to
the Class P Certificates and not as paid by or through any REMIC under this
Agreement. All amounts in respect of waived Late Payment Fees paid by the
Servicer to the Class L Certificates will be treated as paid directly by the
Servicer to the Class L Certificates pursuant to Section 3.21(b) and not as paid
by or through any REMIC created under this Agreement or by or through the
Grantor Trust described in this Agreement.

                                The Master REMIC

     The following table sets forth characteristics of the Certificates,
together with the minimum denominations and integral multiples in excess thereof
in which such Classes shall be issuable (except that the Class B-6 Certificates
may be issued in a different amount):

<TABLE>
<CAPTION>
   ======================================================================================================================
                                                                                                           Integral
                                 Initial Class Certificate                             Minimum           Multiples in
        Class Designation                 Balance             Pass-Through Rate      Denomination     Excess of Minimum
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
<S>                             <C>                          <C>                  <C>                 <C>
             Class A-1                       $94,341,000          6.00%             $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class A-2                        $7,813,000          6.00%             $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class A-3                       $71,906,000          6.00%             $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class A-4                       $20,282,000          6.00%             $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class A-5                        $6,674,000          6.00%             $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class A-6                          $402,000          6.00%             $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class A-7                       $45,554,000          6.00%             $      25,000                $1
   ======================================================================================================================

                                       1
<PAGE>

   ======================================================================================================================
             Class A-8                        $4,801,000          6.00%             $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class PO                          $2,203,478        N/A (1)            $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class A-X                   $164,610,186 (2)          (3)              $      25,000 (4)            $1 (4)
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class A-R                              $100          6.00%             $         100           N/A
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class B-1                        $3,807,000          6.00%             $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class B-2                        $1,575,000          6.00%             $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class B-3                        $1,050,000          6.00%             $      25,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class B-4                          $919,000          6.00%             $     100,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class B-5                          $656,000          6.00%             $     100,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
             Class B-6                       $525,489.33          6.00%             $     100,000                $1
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
              Class P                               $100          N/A(5)            $         100               N/A
   ---------------------------- ---------------------------- -------------------- ------------------- -------------------
              Class L                                N/A          N/A(6)                 (6)                     (6)
   ======================================================================================================================
</TABLE>

(1)  The Class PO Certificates are Principal Only Certificates and are not
     entitled to receive distributions of interest.

(2)  This Class of Certificates will be a Notional Amount Certificate, will have
     no Class Certificate Balance and will bear interest on its Notional Amount.

(3)  The Pass-Through Rate of the Class A-X Certificates for the Interest
     Accrual Period related to each Distribution Date will equal the excess of
     the average of the Adjusted Net Mortgage Rates of the Non-discount Mortgage
     Loans, weighted on the basis of their respective Stated Principal Balance
     as of the first day of the related Due Period (after giving effect to
     Principal Prepayments received in the Prepayment Period ending during the
     Due Period), over 6.00% per annum. The Pass-Through Rate for the Class A-X
     Certificates during the initial Interest Accrual Period is 0.4214% per
     annum.

(4)  Denomination is based on Notional Amount.

(5)  The Class P Certificates will not be entitled to any interest, but will be
     entitled to 100% of any Prepayment Charges on the Mortgage Loans. For
     federal income tax purposes, all amounts in respect of waived Prepayment
     Charges paid by the Servicer to the Class P Certificates pursuant to
     Section 3.20(b) will be treated as paid directly by the Servicer to the
     Class P Certificates and not as paid by or through any REMIC created under
     this Agreement. The Class P Certificates shall be issued as a single
     certificate.

(6)  The Class L Certificates will not evidence an interest in any REMIC and
     will not be entitled to any interest but will be entitled to 100% of the
     Late Payment Fees collected. For federal income tax purposes, the Trustee
     will treat Late Payment Fees as beneficially owned by the Holder of the
     Class L Certificates and shall treat such portion of the Trust Fund as an
     interest in a "trust" within the meaning of Treasury regulations section
     301.7701-4(a) (the "Grantor Trust"). The Class L Certificates shall be
     issued as a single certificate.

     The foregoing REMIC structure is intended to cause all of the cash from the
Mortgage Loans to flow through to the Master REMIC as cash flow on a REMIC
regular interest, without creating any shortfall--actual or potential (other
than for credit losses) to any REMIC regular interest.

Set forth below are designations of Classes of Certificates to the categories
used herein:

Accretion Directed Certificates......   Class A-1, Class A-2, Class A-3,
                                        Class A-4 and

                                       2
<PAGE>

                                        Class A-5 Certificates.

Accrual Certificates.................   Class A-5 and Class A-6 Certificates.

Book-Entry Certificates..............   All Classes of Certificates other than
                                        the Physical Certificates.

COFI Certificates....................   None.

Delay Certificates...................   All interest-bearing Classes of
                                        Certificates other than any Non-Delay
                                        Certificates.

ERISA-Restricted Certificates........   The Residual Certificates and the
                                        Private Certificates; the Retained
                                        Certificates until they have been the
                                        subject of an ERISA-Qualifying
                                        Underwriting; and Certificates of any
                                        Class that ceases to have a rating of
                                        BBB- (or its equivalent) or better from
                                        at least one Rating Agency.

LIBOR Certificates...................   None.

Non-Delay Certificates...............   LIBOR Certificates.

Notional Amount Certificates.........   Class A-X Certificates

Offered Certificates.................   All Classes of Certificates other than
                                        the Private Certificates.

Physical Certificates................   Class A-R Certificates and the Private
                                        Certificates.

Planned Principal Classes............   Class A-1 and Class A-2 Certificates.

Principal Only Certificates..........   Class PO Certificates.

Private Certificates.................   Class B-4, Class B-5, Class B-6, Class P
                                        and Class L Certificates.

Rating Agencies......................   Fitch and S&P.

Regular Certificates.................   All Classes of Certificates other than
                                        the Class A-R Certificates.

Residual Certificate.................   Class A-R Certificates.

Retained Certificates................   Class P and Class L Certificates.

Senior Certificates..................   Class A-1, Class A-2, Class A-3,
                                        Class A-4, Class A-5, Class A-6,
                                        Class A-7, Class A-8,

                                       3
<PAGE>

                                        Class A-X, Class PO and Class A-R
                                        Certificates

Subordinated Certificates............   Class B-1, Class B-2, Class B-3,
                                        Class B-4, Class B-5 and Class B-6
                                        Certificates.

Targeted Principal Classes...........   Class A-3 and Class A-4 Certificates.

Targeted Principal Component.........   None.

     With respect to any of the foregoing designations as to which the
corresponding reference is "None," all defined terms and provisions in this
Agreement relating solely to such designations shall be of no force or effect,
and any calculations in this Agreement incorporating references to such
designations shall be interpreted without reference to such designations and
amounts. Defined terms and provisions in this Agreement relating to statistical
rating agencies not designated above as Rating Agencies shall be of no force or
effect.

                                       4
<PAGE>

                                   ARTICLE ONE

                                   DEFINITIONS

     Section 1.01 Definitions.

     Unless the context requires a different meaning, capitalized terms are used
in this Agreement as defined below.

     Accretion Directed Certificates: As specified in the Preliminary Statement.

     Accretion Direction Rule: The Class A-5 Accretion Direction Rule or the
Class A-6 Accretion Direction Rule, as applicable.

     Accrual Amount: The Class A-5 Accrual Amount or the Class A-6 Accrual
Amount, as applicable.

     Accrual Certificates: As specified in the Preliminary Statement.

     Accrual Termination Date: With respect to the Class A-5 Certificates, the
earlier of (a) the Senior Credit Support Depletion Date and (b) the Distribution
Date on which the aggregate Class Certificate Balance of the Class A-3 and Class
A-4 Certificates has been reduced to zero. With respect to the Class A-6
Certificates, the earlier of (a) the Senior Credit Support Depletion Date and
(b) the Distribution Date on which the aggregate Class Certificate Balance of
the Class A-1, Class A-2, Class A-3, Class A-4 and Class A-5 Certificates has
been reduced to zero.

     Additional Designated Information: As defined in Section 11.02.

     Adjusted Mortgage Rate: As to each Mortgage Loan and at any time, the per
annum rate equal to the Mortgage Rate less the Servicing Fee Rate.

     Adjusted Net Mortgage Rate: As to each Mortgage Loan and any Distribution
Date, the per annum rate equal to the Mortgage Rate of that Mortgage Loan (as of
the Due Date in the month preceding the month in which such Distribution Date
occurs) less the Expense Fee Rate for that Mortgage Loan.

     Advance: The payment required to be made by the Servicer with respect to
any Distribution Date pursuant to Section 4.01, the amount of any such payment
being equal to the aggregate of payments of principal and interest (net of the
Servicing Fee) on the Mortgage Loans that were due during the related Due Period
and not received as of the close of business on the related Determination Date,
together with an amount equivalent to interest on each REO Property, net of any
net income from such REO Property, less the aggregate amount of any such
delinquent payments that the Servicer has determined would constitute a
Nonrecoverable Advance if advanced.

     Advance Notice: As defined in Section 4.01(b).

     Advance Deficiency: As defined in Section 4.01(b).

     Affiliate: With respect to any Person, any other Person controlling,
controlled or under common control with such Person. For purposes of this
definition, "control" means the power to direct the management and policies of a
Person, directly or indirectly, whether through ownership of voting securities,
by contract, or otherwise and "controlling" and "controlled" shall have meanings
correlative to

                                       5
<PAGE>

the foregoing. Affiliates also include any entities consolidated with the
requirements of generally accepted accounting principles.

     Aggregate Planned Balance: With respect to the Class A-1 and Class A-2
Certificates and any Distribution Date appearing in the Principal Balance
Schedule, the applicable amount appearing opposite such Distribution Date for
such Planned Principal Classes.

     Aggregate Targeted Balance: With respect to the Class A-3 and Class A-4
Certificates and any Distribution Date appearing in the Principal Balance
Schedule, the applicable amount appearing opposite such Distribution Date for
such Targeted Principal Classes.

     Agreement: This Pooling and Servicing Agreement and all amendments and
supplements.

     Allocable Share: As to any Distribution Date and any Mortgage Loan (i) with
respect to the Class A-X Certificates, (a) the ratio that the excess, if any, of
the Adjusted Net Mortgage Rate with respect to such Mortgage Loan over the
applicable Required Coupon bears to such Adjusted Net Mortgage Rate or (b) if
the Adjusted Net Mortgage Rate with respect to such Mortgage Loan does not
exceed the applicable Required Coupon, zero; (ii) with respect to the Class PO
Certificates, zero and (iii) with respect to each other Class of Certificates
the product of (a) the lesser of (I) the ratio that the Required Coupon bears to
such Adjusted Net Mortgage Rate of such Mortgage Loan and (II) one, multiplied
by (b) the ratio that the amount calculated with respect to such Distribution
Date for such Class, pursuant to clause (i) of the definition of Class Optimal
Interest Distribution Amount (without giving effect to any reduction of such
amount pursuant to Section 4.02(d)) bears to the aggregate amount calculated
with respect to such Distribution Date for each such Class of Certificates
pursuant to clause (i) of the definition of Class Optimal Interest Distribution
Amount (without giving effect to any reduction of such amounts pursuant to
Section 4.02(d)).

     Amount Available for Senior Principal: As to any Distribution Date, the
Available Funds for such Distribution Date, reduced by the aggregate amount
distributable (or allocable to the Accrual Amount, if applicable) on such
Distribution Date in respect of interest on the Senior Certificates pursuant to
Section 4.02(a)(1)(iii).

     Amount Held for Future Distribution: As to any Distribution Date, the
aggregate amount held in the Certificate Account at the close of business on the
related Determination Date on account of (i) Principal Prepayments received
after the last day of the related Prepayment Period and Liquidation Proceeds and
Subsequent Recoveries received in the month of such Distribution Date and (ii)
all Scheduled Payments due after the related Due Date.

     Applicable Credit Support Percentage: As defined in Section 4.02(e).

     Appraised Value: With respect to any Mortgage Loan, the Appraised Value of
the related Mortgaged Property shall be: (i) with respect to a Mortgage Loan
other than a Refinance Loan, the lesser of (a) the value of the Mortgaged
Property based upon the appraisal made at the time of the origination of such
Mortgage Loan and (b) the sales price of the Mortgaged Property at the time of
the origination of such Mortgage Loan; and (ii) with respect to a Refinance
Loan, the value of the Mortgaged Property based upon the appraisal made at the
time of the origination of such Refinance Loan.

     Available Funds: As to any Distribution, the sum of (a) the aggregate
amount held in the Certificate Account at the close of business on the related
Determination Date, including any Subsequent Recoveries, net of the Amount Held
for Future Distribution, net of Prepayment Charges, the $100 held in trust for
the Class P Certificates and Late Payment Fees and net of amounts permitted to
be withdrawn

                                       6
<PAGE>

from the Certificate Account pursuant to clauses (i) - (viii), inclusive, of
Section 3.09(a) and amounts permitted to be withdrawn from the Distribution
Account pursuant to clauses (i) - (ii), inclusive, of Section 3.09(b), (b) the
amount of the related Advance, (c) in connection with Defective Mortgage Loans,
the aggregate of the Purchase Prices and Substitution Adjustment Amounts
deposited on the related Distribution Account Deposit Date, and (d) any amount
deposited on the related Distribution Account Deposit Date pursuant to Section
3.10. The Holders of the Class P Certificates will be entitled to all Prepayment
Charges received on the Mortgage Loans and the Holders of the Class L
Certificates will be entitled to all Late Payment Fees received on the Mortgage
Loans and such amounts will not be available for distribution to the Holders of
any other Class of Certificates.

     Bankruptcy Code: The United States Bankruptcy Reform Act of 1978, as
amended.

     Bankruptcy Coverage Termination Date: The point in time at which the
Bankruptcy Loss Coverage Amount is reduced to zero.

     Bankruptcy Loss: With respect to any Mortgage Loan, a Deficient Valuation
or Debt Service Reduction; provided, however, that a Bankruptcy Loss shall not
be deemed a Bankruptcy Loss under this Agreement so long as the Servicer has
notified the Trustee in writing that the Servicer is diligently pursuing any
remedies that may exist in connection with the related Mortgage Loan and either
(A) the related Mortgage Loan is not in default with regard to payments due
under the Mortgage Loan or (B) delinquent payments of principal and interest
under the related Mortgage Loan and any related escrow payments in respect of
such Mortgage Loan are being advanced on a current basis by the Servicer, in
either case without giving effect to any Debt Service Reduction or Deficient
Valuation.

     Bankruptcy Loss Coverage Amount: As of any date of determination, the
Bankruptcy Loss Coverage Amount shall equal the Initial Bankruptcy Loss Coverage
Amount as reduced by (i) the aggregate amount of Bankruptcy Losses allocated to
the Certificates since the Cut-off Date and (ii) any permissible reductions in
the Bankruptcy Loss Coverage Amount as evidenced by a letter of each Rating
Agency to the Trustee to the effect that any such reduction will not result in a
downgrading, qualification or withdrawal of the then current ratings assigned to
the Classes of Certificates rated by it.

     Blanket Mortgage: The mortgage or mortgages encumbering a Cooperative
Property.

     Book-Entry Certificates: As specified in the Preliminary Statement.

     Business Day: Any day other than (i) a Saturday or a Sunday, or (ii) a day
on which banking institutions in the City of New York, New York, the State of
California or the city in which the Corporate Trust Office of the Trustee is
located are authorized or obligated by law or executive order to be closed.

     Cap Counterparty: Not applicable.

     Certificate: Any one of the certificates issued by the Trust Fund and
executed by the Trustee in substantially the forms attached as exhibits.

     Certificate Account: The separate Eligible Account or Accounts created and
maintained by the Servicer pursuant to Section 3.06(d) with a depository
institution in the name of the Servicer for the benefit of the Trustee on behalf
of Certificateholders and designated "IndyMac Bank, F.S.B., in trust for the
registered holders of IndyMac IMJA Mortgage Loan Trust 2007-A1, Mortgage
Pass-Through Certificates, Series 2007-A1."

                                       7
<PAGE>

     Certificate Balance: With respect to any Certificate (other than the
Notional Amount Certificates) at any date of determination, the maximum dollar
amount of principal to which the Holder thereof is then entitled under this
Agreement, such amount being equal to the Denomination thereof (A) plus any
increase in the Certificate Balance of such Certificate pursuant to Section 4.02
due to the receipt of Subsequent Recoveries, (B) minus the sum of (i) all
distributions of principal previously made with respect thereto and (ii) all
Realized Losses allocated to that Certificate and, in the case of any
Subordinated Certificates, all other reductions in Certificate Balance
previously allocated to that Certificate pursuant to Section 4.05 and (C) in the
case of any Class of Accrual Certificates, plus the Accrual Amount added to the
Class Certificate Balance of such Class prior to such date. The Notional Amount
Certificates and the Class L Certificates do not have Certificate Balances.

     Certificate Group: Not applicable.

     Certificate Owner: With respect to a Book-Entry Certificate, the Person who
is the beneficial owner of the Book-Entry Certificate. For the purposes of this
Agreement, in order for a Certificate Owner to enforce any of its rights under
this Agreement, it shall first have to provide evidence of its beneficial
ownership interest in a Certificate that is reasonably satisfactory to the
Trustee, the Depositor and/or the Servicer, as applicable.

     Certificate Register: The register maintained pursuant to Section 5.02.

     Certificate Registrar: Deutsche Bank National Trust Company and its
successors and, if a successor certificate registrar is appointed under this
Agreement, the successor.

     Certificateholder or Holder: The person in whose name a Certificate is
registered in the Certificate Register, except that, solely for the purpose of
giving any consent pursuant to this Agreement, any Certificate registered in the
name of the Depositor or any affiliate of the Depositor is not Outstanding and
the Percentage Interest evidenced thereby shall not be taken into account in
determining whether the requisite amount of Percentage Interests necessary to
effect a consent has been obtained, except that if the Depositor or its
affiliates own 100% of the Percentage Interests evidenced by a Class of
Certificates, the Certificates shall be Outstanding for purposes of any
provision of this Agreement requiring the consent of the Holders of Certificates
of a particular Class as a condition to the taking of any action. The Trustee is
entitled to rely conclusively on a certification of the Depositor or any
affiliate of the Depositor in determining which Certificates are registered in
the name of an affiliate of the Depositor.

     Certification Party: As defined in Section 11.05.

     Certifying Person: As defined in Section 11.05.

     Class: All Certificates bearing the same class designation as set forth in
the Preliminary Statement.

     Class A-5 Accretion Direction Rule: With respect to any Distribution Date
up to and including the Accrual Termination Date for the Class A-5 Certificates,
the Class A-5 Accrual Amount shall be distributed as principal to the Class A-3
and Class A-4 Certificates, in the amounts and priorities specified in rules 4
and 5 of Section 4.02(a)(1)(iii)(B).

     Class A-5 Accrual Amount: With respect to any Distribution Date up to and
including the Accrual Termination Date for the Class A-5 Certificates, the
amount allocable to interest on the Class A-5 Certificates with respect to such
Distribution Date pursuant to Section 4.02(a)(1)(ii).

                                       8
<PAGE>

     Class A-6 Accretion Direction Rule: With respect to any Distribution Date
up to and including the Accrual Termination Date for the Class A-6 Certificates,
the Class A-6 Accrual Amount shall be distributed as principal to the Class A-1,
Class A-2, Class A-3, Class A-4 and Class A-5 Certificates, in the amounts and
priorities specified in rules 3 through 8 of Section 4.02(a)(1)(iii)(B).

     Class A-6 Accrual Amount: With respect to any Distribution Date up to and
including the Accrual Termination Date for the Class A-6 Certificates, the
amount allocable to interest on the Class A-6 Certificates with respect to such
Distribution Date pursuant to Section 4.02(a)(1)(ii).

     Class Certificate Balance: For any Class as of any date of determination,
the aggregate of the Certificate Balances of all Certificates of the Class as of
that date.

     Class Interest Shortfall: As to any Distribution Date and Class, the amount
by which the amount described in clause (i) of the definition of Class Optimal
Interest Distribution Amount for such Class exceeds the amount of interest
actually distributed on such Class on such Distribution Date pursuant to such
clause (i).

     Class Optimal Interest Distribution Amount: With respect to any
Distribution Date and interest-bearing Class, the sum of (i) one month's
interest accrued during the related Interest Accrual Period at the Pass-Through
Rate for such Class, on the related Class Certificate Balance or Notional
Amount, as applicable, immediately prior to such Distribution Date, subject to
reduction pursuant to Section 4.02(d), and (ii) any Class Unpaid Interest
Amounts for such Class. All Classes of Certificates will accrue interest on the
basis of a 360-day year consisting of twelve 30-day months.

     Class PO Deferred Amount: As to any Distribution Date, the aggregate of the
applicable PO Percentage of each Realized Loss, other than any Excess Loss, on a
Discount Mortgage Loan to be allocated to the Class PO Certificates on such
Distribution Date on or prior to the Senior Credit Support Depletion Date or
previously allocated to that Class PO Certificates and not yet paid to the
Holders of the Class PO Certificates.

     Class Subordination Percentage: With respect to any Distribution Date and
each Class of Subordinated Certificates, the fraction (expressed as a
percentage) the numerator of which is the Class Certificate Balance of such
Class of Subordinated Certificates immediately prior to such Distribution Date
and the denominator of which is the aggregate Class Certificate Balance of all
Classes of Certificates immediately prior to such Distribution Date.

     Class Unpaid Interest Amounts: As to any Distribution Date and Class of
interest-bearing Certificates, the amount by which the aggregate Class Interest
Shortfalls for such Class on prior Distribution Dates exceeds the amount
distributed on such Class on prior Distribution Dates pursuant to clause (ii) of
the definition of Class Optimal Interest Distribution Amount.

     Closing Date: June 28, 2007.

     Code: The Internal Revenue Code of 1986, including any successor or
amendatory provisions.

     COFI: Not applicable.

     COFI Certificates: Not applicable.

     Commission: The United States Securities and Exchange Commission.

                                       9
<PAGE>

     Compensating Interest: For any Distribution Date, 0.125% multiplied by
one-twelfth multiplied by the aggregate Stated Principal Balance of the Mortgage
Loans as of the first day of the prior month.

     Component Balance: Not applicable.

     Component Certificates: As specified in the Preliminary Statement.

     Component Notional Amount: Not applicable.

     Components: As specified in the Preliminary Statement.

     Co-op Shares: Shares issued by a Cooperative Corporation.

     Cooperative Corporation: The entity that holds title (fee or an acceptable
leasehold estate) to the real property and improvements constituting the
Cooperative Property and that governs the Cooperative Property, which
Cooperative Corporation must qualify as a Cooperative Housing Corporation under
section 216 of the Code.

     Cooperative Loan: Any Mortgage Loan secured by Co-op Shares and a
Proprietary Lease.

     Cooperative Property: The real property and improvements owned by the
Cooperative Corporation, including the allocation of individual dwelling units
to the holders of the Co-op Shares of the Cooperative Corporation.

     Cooperative Unit: A single family dwelling located in a Cooperative
Property.

     Corporate Trust Office: The designated office of the Trustee in the State
of California at which at any particular time its corporate trust business with
respect to this Agreement is administered, which office at the date of the
execution of this Agreement is located at 1761 East St. Andrew Place, Santa Ana,
California 92705, Attn: Mortgage Administration-IN07J1 (IndyMac MBS, Inc.,
IndyMac IMJA Mortgage Loan Trust 2007-A1, Mortgage Pass-Through Certificates,
Series 2007-A1), and which is the address to which notices to and correspondence
with the Trustee should be directed. With respect to the Certificate Registrar,
the designated office for presentment and surrender of Certificates for
registration of transfer, exchange or final payment thereof is located at DB
Services Tennessee, 648 Grassmere Park Road, Nashville, Tennessee 37211-3658,
Attention: Transfer Unit.

     Corridor Contract: Not applicable.

     Corridor Contract Termination Date: Not applicable.

     Cross-over Situation: Not applicable.

     Cut-off Date: June 1, 2007.

     Cut-off Date Pool Principal Balance: $262,509,067.68.

     Cut-off Date Principal Balance: As to any Mortgage Loan, its Stated
Principal Balance as of the close of business on the Cut-off Date.

     Debt Service Reduction: For any Mortgage Loan, a reduction by a court of
competent jurisdiction in a proceeding under the Bankruptcy Code in the
Scheduled Payment for the Mortgage Loan

                                       10
<PAGE>

that became final and non-appealable, except a reduction resulting from a
Deficient Valuation or a reduction that results in a permanent forgiveness of
principal.

     Defective Mortgage Loan: Any Mortgage Loan that is required to be
repurchased pursuant to Section 2.02 or 2.03.

     Deficient Valuation: For any Mortgage Loan, a valuation by a court of
competent jurisdiction of the Mortgaged Property in an amount less than the then
outstanding indebtedness under the Mortgage Loan, or any reduction in the amount
of principal to be paid in connection with any Scheduled Payment that results in
a permanent forgiveness of principal, which valuation or reduction results from
an order of the court that is final and non-appealable in a proceeding under the
Bankruptcy Code.

     Definitive Certificates: Any Certificate evidenced by a Physical
Certificate and any Certificate issued in lieu of a Book-Entry Certificate
pursuant to Section 5.02(e).

     Delay Certificates: As specified in the Preliminary Statement.

     Delay Delivery Certification: A certification substantially in the form of
Exhibit G-2.

     Delay Delivery Mortgage Loans: The Mortgage Loans identified on the
Mortgage Loan Schedule for which none of a related Mortgage File or neither the
Mortgage Note nor a lost note affidavit for a lost Mortgage Note has been
delivered to the Trustee by the Closing Date. The Depositor shall deliver the
Mortgage Files to the Trustee:

     (A) for at least 70% of the Mortgage Loans, not later than the Closing
Date, and

     (B) for the remaining 30% of the Mortgage Loans, not later than five
Business Days following the Closing Date.

     To the extent that the Seller is in possession of any Mortgage File for any
Delay Delivery Mortgage Loan, until delivery of the Mortgage File to the Trustee
as provided in Section 2.01, the Seller shall hold the files as Servicer, as
agent and in trust for the Trustee.

     Deleted Mortgage Loan: As defined in Section 2.03(c).

     Delinquent: A Mortgage Loan is "Delinquent" if any monthly payment due on a
Due Date is not made by the close of business on the day immediately preceding
the next scheduled Due Date for such Mortgage Loan. A Mortgage Loan is "30 days
Delinquent" if such monthly payment has not been received by the close of
business on the last day of the month in which such monthly payment was due. The
determination of whether a Mortgage Loan is "60 days Delinquent", "90 days
Delinquent", etc. shall be made in a like manner.

     Denomination: For each Certificate, the amount on the face of the
Certificate as the "Initial Certificate Balance of this Certificate" or the
"Initial Notional Amount of this Certificate" or, if neither of the foregoing,
the Percentage Interest appearing on the face of the Certificate.

     Depositor: IndyMac MBS, Inc., a Delaware corporation, or its successor in
interest.

     Depository: The initial Depository shall be The Depository Trust Company,
the nominee of which is CEDE & Co., as the registered Holder of the Book-Entry
Certificates. The Depository shall at all times be a "clearing corporation" as
defined in Section 8-102(a)(5) of the UCC.

                                       11
<PAGE>

     Depository Participant: A broker, dealer, bank, or other financial
institution or other Person for whom from time to time a Depository effects
book-entry transfers and pledges of securities deposited with the Depository.

     Derivative Notional Balance: Not applicable.

     Determination Date: As to any Distribution Date, the 15th day of each month
or if that day is not a Business Day the next Business Day.

     Discount Mortgage Loan: Any Mortgage Loan with an Adjusted Net Mortgage
Rate that is less than the Required Coupon.

     Distribution Account: The separate Eligible Account created and maintained
by the Trustee pursuant to Section 3.06(e) in the name of the Trustee for the
benefit of the Certificateholders and designated "Deutsche Bank National Trust
Company in trust for registered holders of IndyMac IMJA Mortgage Loan Trust
2007-A1, Mortgage Pass-Through Certificates, Series 2007-A1." Funds in the
Distribution Account shall be held in trust for the Certificateholders for the
uses and purposes set forth in this Agreement.

     Distribution Account Deposit Date: As to any Distribution Date, 12:30 P.M.
Pacific time on the Business Day preceding the Distribution Date.

     Distribution Date: The 25th day of each calendar month after the initial
issuance of the Certificates, or if that day is not a Business Day, the next
Business Day, commencing in July 2007.

     Due Date: For any Mortgage Loan and Distribution Date, the first day of the
month in which such Distribution Date occurs.

     Due Period: For any Distribution Date, the period commencing on the second
day of the month preceding the month in which the Distribution Date occurs and
ending on the first day of the month in which the Distribution Date occurs.

     EDGAR: The Commission's Electronic Data Gathering, Analysis and Retrieval
system.

     Eligible Account: Any of

     (i) an account or accounts maintained with a federal or state chartered
depository institution or trust company the short-term unsecured debt
obligations of which (or, in the case of a depository institution or trust
company that is the principal subsidiary of a holding company, the debt
obligations of either such holding company or the depository institution or
trust company, whichever are rated higher) have (x) if Moody's is a Rating
Agency at the time amounts are held on deposit therein, the highest short-term
ratings of Moody's (which shall be Prime-1), (y) if Fitch is a Rating Agency at
the time any amounts are held on deposit therein, the highest short-term rating
of Fitch (which shall be F1 for funds held for less than 30 days, and F1+ for
funds held for longer than 30 days and less than 365 days) and (z) if S&P is a
Rating Agency at the time any amounts are held on deposit therein, a short-term
rating of at least A-2, for funds held no longer than 30 days, and, if funds
will be held longer than 30 days and less than 365 days, a short-term rating of
at least A-1+, or

     (ii) if either of Moody's or Fitch is a Rating Agency, an account or
accounts in a depository institution or trust company in which such accounts are
insured by the FDIC (to the limits established by the FDIC) and the uninsured
deposits in which accounts are otherwise secured such that, as evidenced by

                                       12
<PAGE>

an Opinion of Counsel delivered to the Trustee and to each Rating Agency, the
Certificateholders have a claim with respect to the funds in such account or a
perfected first priority security interest against any collateral (which shall
be limited to Permitted Investments) securing such funds that is superior to
claims of any other depositors or creditors of the depository institution or
trust company in which such account is maintained (it being understood that any
account permitted by this clause (ii) shall not be an Eligible Account in
connection with a rating provided by S&P of any Class of Certificates), or

     (iii) a trust account or accounts maintained with (a) the trust department
of a federal or state chartered depository institution or (b) a trust company,
acting in its fiduciary capacity or

     (iv) any other account acceptable to each Rating Agency.

Eligible Accounts may bear interest, and may include, if otherwise qualified
under this definition, accounts maintained with the Trustee.

     ERISA: The Employee Retirement Income Security Act of 1974, as amended.

     ERISA-Qualifying Underwriting: A best efforts or firm commitment
underwriting or private placement that meets the requirements of the
Underwriter's Exemption.

     ERISA-Restricted Certificate: As specified in the Preliminary Statement.

     Escrow Account: The Eligible Account or Accounts established and maintained
pursuant to Section 3.07(a).

     Event of Default: As defined in Section 7.01.

     Excess Loss: The amount of any (i) Fraud Loss on the Mortgage Loans
realized after the Fraud Loss Coverage Termination Date, (ii) Special Hazard
Loss on the Mortgage Loans realized after the Special Hazard Coverage
Termination Date or (iii) Bankruptcy Loss on the Mortgage Loans realized after
the Bankruptcy Coverage Termination Date.

     Excess Proceeds: For any Liquidated Mortgage Loan, the excess of

     (a) all Liquidation Proceeds from the Mortgage Loan received in the
calendar month in which the Mortgage Loan became a Liquidated Mortgage Loan, net
of any amounts previously reimbursed to the Servicer as Nonrecoverable Advances
with respect to the Mortgage Loan pursuant to Section 3.09(a)(iii), over

     (b) the sum of (i) the unpaid principal balance of the Liquidated Mortgage
Loan as of the Due Date in the month in which the Mortgage Loan became a
Liquidated Mortgage Loan plus (ii) accrued interest at the Mortgage Rate from
the Due Date for which interest was last paid or advanced (and not reimbursed)
to Certificateholders up to the Due Date applicable to the Distribution Date
following the calendar month during which the liquidation occurred.

     Exchange Act: The Securities Exchange Act of 1934, as amended, and the
rules and regulations promulgated thereunder.

     Exchange Act Reports: Any reports on Form 10-D, Form 8-K and Form 10-K
required to be filed by the Depositor with respect to the Trust Fund under the
Exchange Act.

                                       13
<PAGE>

     Expense Fee Rate: As to each Mortgage Loan, the sum of (a) the related
Servicing Fee Rate and (b) the Trustee Fee Rate.

     FDIC: The Federal Deposit Insurance Corporation, or any successor thereto.

     FHLMC: The Federal Home Loan Mortgage Corporation, a corporate
instrumentality of the United States created and existing under Title III of the
Emergency Home Finance Act of 1970, as amended, or any successor thereto.

     Fitch: Fitch, Inc., or any successor thereto. If Fitch is designated as a
Rating Agency in the Preliminary Statement, for purposes of Section 10.05(b) the
address for notices to Fitch shall be Fitch, Inc., One State Street Plaza, New
York, NY 10004, Attention: MBS Monitoring - IndyMac 2007-A1, or any other
address Fitch furnishes to the Depositor and the Servicer.

     FNMA: The Federal National Mortgage Association, a federally chartered and
privately owned corporation organized and existing under the Federal National
Mortgage Association Charter Act, or any successor thereto.

     Form 10-D Disclosure Item: With respect to any Person, any material
litigation or governmental proceedings pending against such Person, or against
any of the Trust Fund, the Depositor, the Trustee or the Servicer, if such
Person has actual knowledge thereof.

     Form 10-K Disclosure Item: With respect to any Person, (a) Form 10-D
Disclosure Item, and (b) any affiliations or relationships between such Person
and any Item 1119 Party.

     Fraud Loan: A Liquidated Mortgage Loan as to which a Fraud Loss has
occurred.

     Fraud Loss Coverage Amount: As of the Closing Date, $2,625,091, subject to
reduction from time to time, by the amount of Fraud Losses allocated to the
Certificates. In addition, on each anniversary of the Cut-off Date, the Fraud
Loss Coverage Amount will be reduced as follows: (a) on the first, second, third
and fourth anniversaries of the Cut-off Date, to an amount equal to the lesser
of (i) 1% of the then current Stated Principal Balance of the Mortgage Loans in
the case of the first anniversary and 0.50% of the then current Stated Principal
Balance of the Mortgage Loans in the case of the second, third and fourth such
anniversaries and (ii) the excess of the Fraud Loss Coverage Amount as of the
preceding anniversary of the Cut-off Date over the cumulative amount of Fraud
Losses allocated to the Certificates since such preceding anniversary; and (b)
on the fifth anniversary of the Cut-off Date, to zero.

     Fraud Loss Coverage Termination Date: The point in time at which the Fraud
Loss Coverage Amount is reduced to zero.

     Fraud Losses: Realized Losses on Mortgage Loans as to which a loss is
sustained by reason of a default arising from fraud, dishonesty or
misrepresentation in connection with the related Mortgage Loan, including a loss
by reason of the denial of coverage under any related Primary Insurance Policy
because of such fraud, dishonesty or misrepresentation.

     Grantor Trust: As specified in the Preliminary Statement.

     Indirect Participant: A broker, dealer, bank, or other financial
institution or other Person that clears through or maintains a custodial
relationship with a Depository Participant.

     Initial Bankruptcy Loss Coverage Amount: $100,000.

                                       14
<PAGE>

     Initial Component Balance: As specified in the Preliminary Statement.

     Initial LIBOR Rate: Not applicable.

     Insurance Policy: For any Mortgage Loan included in the Trust Fund, any
insurance policy, including all riders and endorsements thereto in effect,
including any replacement policy or policies for any Insurance Policies.

     Insurance Proceeds: Proceeds paid by an insurer pursuant to any Insurance
Policy, in each case other than any amount included in such Insurance Proceeds
in respect of Insured Expenses.

     Insured Expenses: Expenses covered by an Insurance Policy or any other
insurance policy with respect to the Mortgage Loans.

     Interest Accrual Period: With respect to each Class of Delay Certificates
and any Distribution Date, the calendar month prior to the month of such
Distribution Date. With respect to each Class of Non-Delay Certificates and any
Distribution Date, the one-month period commencing on the 25th day of the month
preceding the month in which such Distribution Date occurs and ending on the
24th day of the month in which such Distribution Date occurs. All Classes of
Certificates will accrue interest on the basis of a 360-day year consisting of
twelve 30-day months.

     Interest Determination Date: With respect to (a) any Interest Accrual
Period for any LIBOR Certificates and (b) any Interest Accrual Period for the
COFI Certificates for which the applicable Index is LIBOR, the second Business
Day prior to the first day of such Interest Accrual Period.

     Interest Settlement Rate: As defined in Section 4.09.

     Item 1119 Party: The Depositor, the Seller, the Servicer, the Trustee, the
Cap Counterparty and any other material transaction party, as identified in
Exhibit T, as updated pursuant to Section 11.04.

     Late Payment Fee: As to a Mortgage Loan, any fees assessable by the related
mortgagee in connection with the late payment of a Scheduled Payment due after
the Cut-off Date.

     Latest Possible Maturity Date: The Distribution Date, calculated on the
Closing Date, following the third anniversary of the later of (i) the scheduled
maturity date of the Mortgage Loan having the latest scheduled maturity date as
of the Cut-off Date, and (ii) the latest possible maturity of any Substitute
Mortgage Loan that may be substituted for any Mortgage Loan pursuant to this
Agreement.

     Lender PMI Loans: Mortgage Loans with respect to which the lender rather
than the borrower acquired the primary mortgage guaranty insurance and charged
the related borrower an interest premium.

     LIBOR: The London interbank offered rate for one month United States dollar
deposits calculated in the manner described in Section 4.09.

     LIBOR Determination Date: For any Interest Accrual Period, the second
London Business Day prior to the commencement of such Interest Accrual Period.

     Limited Exchange Act Reporting Obligations: The obligations of the Servicer
under Section 3.17(b), Section 6.02 and Section 6.04 with respect to notice and
information to be provided to the Depositor and Article 11 (except Section
11.07(a)(i) and (ii)).

                                       15
<PAGE>

     Liquidated Mortgage Loan: For any Distribution Date, a defaulted Mortgage
Loan (including any REO Property) that was liquidated in the calendar month
preceding the month of the Distribution Date and as to which the Servicer has
certified (in accordance with this Agreement) that it has received all amounts
it expects to receive in connection with the liquidation of the Mortgage Loan,
including the final disposition of an REO Property.

     Liquidation Proceeds: Amounts, including Insurance Proceeds regardless of
when received, received in connection with the partial or complete liquidation
of defaulted Mortgage Loans, whether through trustee's sale, foreclosure sale,
or otherwise or amounts received in connection with any condemnation or partial
release of a Mortgaged Property, and any other proceeds received in connection
with an REO Property, less the sum of related unreimbursed Servicing Fees,
Servicing Advances, and Advances.

     Loan Group: Not applicable.

     Loan-to-Value Ratio: For any Mortgage Loan and as of any date of
determination, is the fraction whose numerator is the original principal balance
of the related Mortgage Loan at that date of determination and whose denominator
is the Appraised Value of the related Mortgaged Property.

     London Business Day: Any day on which dealings in deposits of United States
dollars are transacted in the London interbank market.

     Lost Mortgage Note: Any Mortgage Note the original of which was permanently
lost or destroyed and has not been replaced.

     Maintenance: For any Cooperative Unit, the rent paid by the Mortgagor to
the Cooperative Corporation pursuant to the Proprietary Lease.

     MERS: Mortgage Electronic Registration Systems, Inc., a corporation
organized and existing under the laws of the State of Delaware, or any successor
thereto.

     MERS Mortgage Loan: Any Mortgage Loan registered with MERS on the MERS(R)
System.

     MERS(R) System: The system of recording transfers of mortgages
electronically maintained by MERS.

     MIN: The mortgage identification number for any MERS Mortgage Loan.

     MOM Loan: Any Mortgage Loan as to which MERS is acting as mortgagee, solely
as nominee for the originator of such Mortgage Loan and its successors and
assigns.

     Monthly Statement: The statement delivered to the Certificateholders
pursuant to Section 4.06.

     Moody's: Moody's Investors Service, Inc., or any successor thereto. If
Moody's is designated as a Rating Agency in the Preliminary Statement, for
purposes of Section 10.05(b) the address for notices to Moody's shall be Moody's
Investors Service, Inc., 99 Church Street, New York, New York 10007, Attention:
Residential Loan Monitoring Group, or any other address that Moody's furnishes
to the Depositor and the Servicer.

     Mortgage: The mortgage, deed of trust, or other instrument creating a first
lien on an estate in fee simple or leasehold interest in real property securing
a Mortgage Note.

                                       16
<PAGE>

     Mortgage File: The mortgage documents listed in Section 2.01 pertaining to
a particular Mortgage Loan and any additional documents delivered to the Trustee
to be added to the Mortgage File pursuant to this Agreement.

     Mortgage Loans: Such of the mortgage loans transferred and assigned to the
Trustee pursuant to this Agreement, as from time to time are held as a part of
the Trust Fund (including any REO Property), the Mortgage Loans so held being
identified on the Mortgage Loan Schedule, notwithstanding foreclosure or other
acquisition of title of the related Mortgaged Property.

     Mortgage Loan Schedule: As of any date, the list set forth in Schedule I of
Mortgage Loans included in the Trust Fund on that date. The Mortgage Loan
Schedule shall be prepared by the Seller and shall set forth the following
information with respect to each Mortgage Loan:

         (i)    the loan number;

         (ii)   the street address of the Mortgaged Property, including the zip
                code;

         (iii)  the maturity date;

         (iv)   the original principal balance;

         (v)    the Cut-off Date Principal Balance;

         (vi)   the first payment date of the Mortgage Loan;

         (vii)  the Scheduled Payment in effect as of the Cut-off Date;

         (viii) the Loan-to-Value Ratio at origination;

         (ix)   a code indicating whether the residential dwelling at the time
                of origination was represented to be owner-occupied;

         (x)    a code indicating whether the residential dwelling is either (a)
                a detached single family dwelling, (b) a dwelling in a PUD, (c)
                a condominium unit, (d) a two- to four-unit residential
                property, or (e) a Cooperative Unit;

         (xi)   the Mortgage Rate;

         (xii)  the purpose for the Mortgage Loan;

         (xiii) the type of documentation program pursuant to which the Mortgage
                Loan was originated;

         (xiv)  a code indicating whether the Mortgage Loan is a borrower-paid
                mortgage insurance loan;

         (xv)   the Servicing Fee Rate;

         (xvi)  a code indicating whether the Mortgage Loan is a Lender PMI
                Loan;

         (xvii) the coverage amount of any mortgage insurance;

                                       17
<PAGE>

         (xviii) with respect to the Lender PMI Loans, the interest premium
                charged by the lender;

         (xix)  a code indicating whether the Mortgage Loan is a Delay Delivery
                Mortgage Loan;

         (xx)   a code indicating whether the Mortgage Loan is a MERS Mortgage
                Loan; and

         (xxi)  a code indicating the nature and type of Prepayment Charge and
                Prepayment Charge Period.

The schedule shall also set forth the total of the amounts described under (v)
above for all of the Mortgage Loans.

     Mortgage Note: The original executed note or other evidence of the
indebtedness of a Mortgagor under a Mortgage Loan.

     Mortgage Rate: The annual rate of interest borne by a Mortgage Note from
time to time (net of the interest premium for any Lender PMI Loan).

     Mortgaged Property: The underlying property securing a Mortgage Loan,
which, with respect to a Cooperative Loan, is the related Co-op Shares and
Proprietary Lease.

     Mortgagor: The obligors on a Mortgage Note.

     National Cost of Funds Index: The National Monthly Median Cost of Funds
Ratio to SAIF-Insured Institutions published by the OTS.

     Net Prepayment Interest Shortfall: As to any Distribution Date, the amount
by which the aggregate of Prepayment Interest Shortfalls for such Distribution
Date exceeds the Compensating Interest for such Distribution Date.

     Non-Delay Certificates: As specified in the Preliminary Statement.

     Non-Discount Mortgage Loan: Any Mortgage Loan with an Adjusted Net Mortgage
Rate that is greater than or equal to the Required Coupon.

     Non-PO Formula Principal Amount: As to any Distribution Date, the sum of
(i) the applicable Non-PO Percentage of (a) all monthly payments of principal
due on each Mortgage Loan on the related Due Date, (b) the principal portion of
the purchase price of each Mortgage Loan that was repurchased by the Seller
pursuant to this Agreement as of such Distribution Date, excluding any Mortgage
Loan that was repurchased pursuant to Section 3.12, (c) the Substitution
Adjustment Amount in connection with any Deleted Mortgage Loan received with
respect to such Distribution Date, (d) any Insurance Proceeds or Liquidation
Proceeds allocable to recoveries of principal of Mortgage Loans that are not yet
Liquidated Mortgage Loans received during the calendar month preceding the month
of such Distribution Date, (e) with respect to each Mortgage Loan that became a
Liquidated Mortgage Loan during the calendar month preceding the month of such
Distribution Date, the amount of Liquidation Proceeds allocable to principal
received with respect to such Mortgage Loan, and (f) all partial and full
Principal Prepayments received during the related Prepayment Period and (ii) (A)
any Subsequent Recoveries received during the calendar month preceding the month
of such Distribution Date, or (B) with respect to Subsequent Recoveries
attributable to a Discount Mortgage Loan that incurred (1) an Excess Loss or (2)
a Realized

                                       18
<PAGE>

Loss after the Senior Credit Support Depletion Date, the Non-PO Percentage of
any Subsequent Recoveries received during the calendar month preceding the month
of such Distribution Date.

     Non-PO Percentage: As to any Discount Mortgage Loan, a fraction (expressed
as a percentage) the numerator of which is the Adjusted Net Mortgage Rate of
such Discount Mortgage Loan and the denominator of which is the Required Coupon.
As to any Non-Discount Mortgage Loan, 100%.

     Nonrecoverable Advance: Any portion of an Advance previously made or
proposed to be made by the Servicer, that, in the good faith judgment of the
Servicer, will not be ultimately recoverable by the Servicer from the related
Mortgagor, related Liquidation Proceeds or otherwise.

     Notice of Final Distribution: The notice to be provided pursuant to Section
9.02 to the effect that final distribution on any of the Certificates shall be
made only upon presentation and surrender thereof.

     Notional Amount: With respect to the Class A-X Certificates and any
Distribution Date, the aggregate Stated Principal Balance of the Non-Discount
Mortgage Loans as of the first day of the related Due Period (after giving
effect to Principal Prepayments received in the Prepayment Period ending during
that Due Period).

     Notional Amount Certificates: As specified in the Preliminary Statement.

     Offered Certificates: As specified in the Preliminary Statement.

     Officer's Certificate: A certificate (i) signed by the Chairman of the
Board, the Vice Chairman of the Board, the President, a Managing Director, a
Vice President (however denominated), an Assistant Vice President, the
Treasurer, the Secretary, or one of the Assistant Treasurers or Assistant
Secretaries of the Depositor or the Servicer, (ii) if provided for in this
Agreement, signed by a Servicing Officer, as the case may be, and delivered to
the Depositor and the Trustee as required by this Agreement or (iii) in the case
of any other Person, signed by an authorized officer of such Person.

     Opinion of Counsel: For the interpretation or application of the REMIC
Provisions, a written opinion of counsel who (i) is in fact independent of the
Depositor and the Servicer, (ii) does not have any direct financial interest in
the Depositor or the Servicer or in any affiliate of either, and (iii) is not
connected with the Depositor or the Servicer as an officer, employee, promoter,
underwriter, trustee, partner, director, or person performing similar functions.
Otherwise, a written opinion of counsel who may be counsel for the Depositor or
the Servicer, including in-house counsel, reasonably acceptable to the Trustee.

     Original Applicable Credit Support Percentage: With respect to each of the
following Classes of Subordinated Certificates, the corresponding percentage
described below:

               Class B-1................................   3.25%
               Class B-2................................   1.80%
               Class B-3................................   1.20%
               Class B-4................................   0.80%
               Class B-5................................   0.45%
               Class B-6................................   0.20%

                                       19
<PAGE>

     Original Mortgage Loan: The Mortgage Loan refinanced in connection with the
origination of a Refinance Loan.

     Original Subordinated Principal Balance: The aggregate Class Certificate
Balance of the Subordinated Certificates as of the Closing Date

     OTS: The Office of Thrift Supervision.

     Outside Reference Date: Not applicable.

     Outstanding: For the Certificates as of any date of determination, all
Certificates theretofore executed and authenticated under this Agreement except:

          (i)  Certificates theretofore canceled by the Trustee or delivered to
               the Trustee for cancellation; and

          (ii) Certificates in exchange for which or in lieu of which other
               Certificates have been executed and delivered by the Trustee
               pursuant to this Agreement.

     Outstanding Mortgage Loan: As of any Due Date, a Mortgage Loan with a
Stated Principal Balance greater than zero that was not the subject of a
Principal Prepayment in Full before the Due Date or during the related
Prepayment Period and that did not become a Liquidated Mortgage Loan before the
Due Date.

     Overcollateralized Group: Not applicable.

     Ownership Interest: As to any Residual Certificate, any ownership interest
in the Certificate including any interest in the Certificate as its Holder and
any other interest therein, whether direct or indirect, legal or beneficial.

     Pass-Through Rate: For each Class of Certificates, the per annum rate set
forth or calculated in the manner described in the Preliminary Statement.

     Percentage Interest: As to any Certificate, the percentage interest
evidenced thereby in distributions required to be made on the related Class, the
percentage interest being set forth on its face or equal to the percentage
obtained by dividing the Denomination of the Certificate by the aggregate of the
Denominations of all Certificates of the same Class.

     Performance Certification: As defined in Section 11.05.

     Permitted Investments: At any time, any of the following:

     (i) obligations of the United States or any agency thereof backed by the
full faith and credit of the United States;

     (ii) general obligations of or obligations guaranteed by any state of the
United States or the District of Columbia receiving the highest long-term debt
rating of each Rating Agency, or any lower rating that will not result in the
downgrading, qualification or withdrawal of the ratings then assigned to the
Certificates by the Rating Agencies, as evidenced by a signed writing delivered
by each Rating Agency;

                                       20
<PAGE>

     (iii) commercial or finance company paper that is then receiving the
highest commercial or finance company paper rating of each Rating Agency, or any
lower rating that will not result in the downgrading, qualification or
withdrawal of the ratings then assigned to the Certificates by the Rating
Agencies , as evidenced by a signed writing delivered by each Rating Agency;

     (iv) certificates of deposit, demand or time deposits, or bankers'
acceptances issued by any depository institution or trust company incorporated
under the laws of the United States or of any state thereof and subject to
supervision and examination by federal or state banking authorities, provided
that the commercial paper or long-term unsecured debt obligations of the
depository institution or trust company (or in the case of the principal
depository institution in a holding company system, the commercial paper or
long-term unsecured debt obligations of the holding company, but only if Moody's
is not a Rating Agency) are then rated one of the two highest long-term and the
highest short-term ratings of each Rating Agency for the securities, or any
lower rating that will not result in the downgrading, qualification or
withdrawal of the ratings then assigned to the Certificates by the Rating
Agencies, as evidenced by a signed writing delivered by each Rating Agency;

     (v) demand or time deposits or certificates of deposit issued by any bank
or trust company or savings institution to the extent that the deposits are
fully insured by the FDIC;

     (vi) guaranteed reinvestment agreements issued by any bank, insurance
company, or other corporation acceptable to the Rating Agencies at the time of
the issuance of the agreements, as evidenced by a signed writing delivered by
each Rating Agency;

     (vii) repurchase obligations with respect to any security described in
clauses (i) and (ii) above, in either case entered into with a depository
institution or trust company (acting as principal) described in clause (iv)
above; provided that such repurchase obligation would be accounted for as a
financing arrangement under generally accepted accounting principles;

     (viii) securities (other than stripped bonds, stripped coupons, or
instruments sold at a purchase price in excess of 115% of their face amount)
bearing interest or sold at a discount issued by any corporation incorporated
under the laws of the United States or any state thereof that, at the time of
the investment, have one of the two highest ratings of each Rating Agency
(except if the Rating Agency is Moody's the rating shall be the highest
commercial paper rating of Moody's for the securities), or any lower rating that
will not result in the downgrading, qualification or withdrawal of the ratings
then assigned to the Certificates by the Rating Agencies, as evidenced by a
signed writing delivered by each Rating Agency and that have a maturity date
occurring no more than 365 days from their date of issuance;

     (ix) units of a taxable money-market portfolio having the highest rating
assigned by each Rating Agency (except (i) if Fitch is a Rating Agency and has
not rated the portfolio, the highest rating assigned by Moody's and (ii) if S&P
is a Rating Agency, "AAAm" or "AAAM-G" by S&P) and restricted to obligations
issued or guaranteed by the United States of America or entities whose
obligations are backed by the full faith and credit of the United States of
America and repurchase agreements collateralized by such obligations; and

     (x) any other investments bearing interest or sold at a discount acceptable
to each Rating Agency that will not result in the downgrading, qualification or
withdrawal of the ratings then assigned to the Certificates by the Rating
Agencies, as evidenced by a signed writing delivered by each Rating Agency.

     No Permitted Investment may (i) evidence the right to receive interest only
payments with respect to the obligations underlying the instrument, (ii) be sold
or disposed of before its maturity or (iii) be any

                                       21
<PAGE>

obligation of the Seller or any of its Affiliates. Any Permitted Investment
shall be relatively risk free and no options or voting rights shall be exercised
with respect to any Permitted Investment. Any Permitted Investment shall be sold
or disposed of in accordance with Financial Accounting Standard 140, paragraph
35c(6) in effect as of the Closing Date.

     Permitted Transferee: Any person other than

     (i) the United States, any State or political subdivision thereof, or any
agency or instrumentality of any of the foregoing,

     (ii) a foreign government, International Organization, or any agency or
instrumentality of either of the foregoing,

     (iii) an organization (except certain farmers' cooperatives described in
section 521 of the Code) that is exempt from tax imposed by Chapter 1 of the
Code (including the tax imposed by section 511 of the Code on unrelated business
taxable income) on any excess inclusions (as defined in section 860E(c)(1) of
the Code) with respect to any Residual Certificate,

     (iv) a rural electric and telephone cooperatives described in section
1381(a)(2)(C) of the Code,

     (v) an "electing large partnership" as defined in section 775 of the Code,

     (vi) a Person that is not a U.S. Person, and

     (vii) any other Person so designated by the Depositor based on an Opinion
of Counsel that the Transfer of an Ownership Interest in a Residual Certificate
to the Person may cause any REMIC created hereunder to fail to qualify as a
REMIC at any time that the Certificates are outstanding.

     Person: Any individual, corporation, partnership, joint venture,
association, limited liability company, joint-stock company, trust,
unincorporated organization, or government, or any agency or political
subdivision thereof.

     Physical Certificates: As specified in the Preliminary Statement.

     Planned Balance: With respect to any Planned Principal Classes and any
Distribution Date appearing in the Principal Balance Schedule, the applicable
amount appearing opposite such Distribution Date for such Planned Principal
Classes.

     Planned Principal Classes: As specified in the Preliminary Statement.

     PO Formula Principal Amount: As to any Distribution Date and the Class PO
Certificates, the sum of (i) the sum of the applicable PO Percentage of (a) the
principal portion of each Scheduled Payment (without giving effect, prior to the
Bankruptcy Coverage Termination Date, to any reductions thereof caused by any
Debt Service Reductions or Deficient Valuations) due on each Mortgage Loan on
the related Due Date, (b) the Stated Principal Balance of each Mortgage Loan
that was repurchased by the Seller or the Servicer pursuant to this Agreement as
of such Distribution Date, excluding any Mortgage Loan that was repurchased
pursuant to Section 3.12, (c) the Substitution Adjustment Amount in connection
with any Deleted Mortgage Loan received with respect to such Distribution Date,
(d) any Insurance Proceeds or Liquidation Proceeds allocable to recoveries of
principal of Mortgage Loans that are not yet Liquidated Mortgage Loans received
during the calendar month preceding the month of such

                                       22
<PAGE>

Distribution Date, (e) with respect to each Mortgage Loan that became a
Liquidated Mortgage Loan during the calendar month preceding the month of such
Distribution Date, the amount of Liquidation Proceeds allocable to principal
received with respect to such Mortgage Loan during the calendar month preceding
the month of such Distribution Date, and (f) all Principal Prepayments with
respect to the Mortgage Loans received during the related Prepayment Period, and
(ii) with respect to Subsequent Recoveries attributable to a Discount Mortgage
Loan that incurred (1) an Excess Loss or (2) a Realized Loss after the Senior
Credit Support Depletion Date, the PO Percentage of any Subsequent Recoveries
received during the calendar month preceding the month of such Distribution
Date.

     PO Percentage: With respect to any Discount Mortgage Loan, a fraction
(expressed as a percentage) the numerator of which is the excess of the Required
Coupon over the Adjusted Net Mortgage Rate of such Discount Mortgage Loan and
the denominator of which is such Required Coupon. As to any Non-Discount
Mortgage Loan, 0%.

     Pool Stated Principal Balance: The aggregate Stated Principal Balance of
the Mortgage Loans.

     Prepayment Assumption: The prepayment model used in the Prospectus
Supplement.

     Prepayment Charge: As to a Mortgage Loan, any charge payable by a Mortgagor
in connection with certain partial prepayments and all prepayments in full made
within the related Prepayment Charge Period, the Prepayment Charges with respect
to each applicable Mortgage Loan so held by the Trust Fund being identified in
the Mortgage Loan Schedule.

     Prepayment Charge Period: As to any Mortgage Loan, the period of time
during which a Prepayment Charge may be imposed.

     Prepayment Interest Excess: As to any Principal Prepayment received by the
Servicer on a Mortgage Loan from the first day through the fifteenth day of any
calendar month other than the month of the Cut-off Date, all amounts paid by the
related Mortgagor in respect of interest on such Principal Prepayment. All
Prepayment Interest Excess shall be retained by the Servicer as additional
servicing compensation.

     Prepayment Interest Shortfall: As to any Distribution Date, Mortgage Loan
and Principal Prepayment received on or after the sixteenth day of the month
preceding the month of such Distribution Date (or, in the case of the first
Distribution Date, on or after the Cut-off Date) and on or before the last day
of the month preceding the month of such Distribution Date, the amount, if any,
by which one month's interest at the related Mortgage Rate, net of the Servicing
Fee Rate, on such Principal Prepayment exceeds the amount of interest paid in
connection with such Principal Prepayment.

     Prepayment Period: As to any Distribution Date and related Due Date, the
period from and including the 16th day of the month immediately prior to the
month of such Distribution Date (or, in the case of the first Distribution Date,
from the Cut-off Date) and to and including the 15th day of the month of such
Distribution Date.

     Prepayment Shift Percentage: For any Distribution Date occurring during the
five years beginning on the first Distribution Date, 0%. For any Distribution
Date occurring on or after the fifth anniversary of the first Distribution Date
as follows: for any Distribution Date in the first year thereafter, 30%; for any
Distribution Date in the second year thereafter, 40%; for any Distribution Date
in the third year thereafter, 60%; for any Distribution Date in the fourth year
thereafter, 80%; and for any Distribution Date thereafter, 100%.

                                       23
<PAGE>

     Primary Insurance Policy: Each policy of primary mortgage guaranty
insurance or any replacement policy therefor with respect to any Mortgage Loan.

     Principal Balance Schedule: The principal balance schedule attached to this
Agreement as Schedule IV.

     Principal Only Certificates: As specified in the Preliminary Statement.

     Principal Prepayment: Any payment of principal by a Mortgagor on a Mortgage
Loan (including the principal portion of the Purchase Price of any Mortgage Loan
purchased pursuant to Section 3.12) that is received in advance of its scheduled
Due Date and is not accompanied by an amount representing scheduled interest due
on any date in any month after the month of prepayment. The Servicer shall apply
partial Principal Prepayments in accordance with the related Mortgage Note.

     Principal Prepayment in Full: Any Principal Prepayment made by a Mortgagor
of the entire principal balance of a Mortgage Loan.

     Priority Amount: For any Distribution Date, the sum of (i) the product of
(A) the Scheduled Principal Distribution Amount, (B) the Priority Percentage and
(C) the Shift Percentage and (ii) the product of (A) the Unscheduled Principal
Distribution Amount, (B) the Priority Percentage and (C) the Prepayment Shift
Percentage.

     Priority Percentage: For any Distribution Date, the percentage equivalent
of a fraction, the numerator of which is the aggregate Class Certificate Balance
of the Class A-7 and Class A-8 Certificates immediately prior to that
Distribution Date, and the denominator of which is the aggregate Class
Certificate Balance of the Senior Certificates (other than the Class PO and
Class A-R Certificates) immediately prior to that Distribution Date.

     Private Certificates: As specified in the Preliminary Statement.

     Pro Rata Share: As to any Distribution Date and any Class of Subordinated
Certificates, the portion of the Subordinated Principal Distribution Amount
allocable to such Class, equal to the product of the Subordinated Principal
Distribution Amount on such Distribution Date and a fraction, the numerator of
which is the related Class Certificate Balance thereof and the denominator of
which is the aggregate Class Certificate Balance of the Subordinated
Certificates, in each case immediately prior to such Distribution Date.

     Proprietary Lease: For any Cooperative Unit, a lease or occupancy agreement
between a Cooperative Corporation and a holder of related Co-op Shares.

     Prospectus Supplement: The Prospectus Supplement dated June 28, 2007,
relating to the Offered Certificates, and any supplement thereto.

     PUD: Planned Unit Development.

     Purchase Price: For any Mortgage Loan required to be purchased by the
Seller pursuant to Section 2.02 or 2.03 or purchased by the Servicer pursuant to
Section 3.12, the sum of

     (i) 100% of the unpaid principal balance of the Mortgage Loan on the date
of the purchase,

                                       24
<PAGE>

     (ii) accrued and unpaid interest on the Mortgage Loan at the applicable
Mortgage Rate (or at the applicable Adjusted Mortgage Rate if (x) the purchaser
is the Servicer or (y) if the purchaser is the Seller and the Seller is the
Servicer) from the date through which interest was last paid by the Mortgagor to
the Due Date in the month in which the Purchase Price is to be distributed to
Certificateholders, net of any unreimbursed Advances made by the Servicer on the
Mortgage Loan, and

     (iii) any costs and damages incurred by the Trust Fund in connection with
any violation by the Mortgage Loan of any predatory or abusive lending law.

     If the Mortgage Loan is purchased pursuant to Section 3.12, the interest
component of the Purchase Price shall be computed (i) on the basis of the
applicable Adjusted Mortgage Rate before giving effect to the related
modification and (ii) from the date to which interest was last paid to the date
on which the Mortgage Loan is assigned to the Servicer pursuant to Section 3.12.

     Qualified Insurer: A mortgage guaranty insurance company duly qualified as
such under the laws of the state of its principal place of business and each
state having jurisdiction over the insurer in connection with the insurance
policy issued by the insurer, duly authorized and licensed in such states to
transact a mortgage guaranty insurance business in such states and to write the
insurance provided by the insurance policy issued by it, approved as a FNMA- or
FHLMC-approved mortgage insurer or having a claims paying ability rating of at
least "AA" or equivalent rating by a nationally recognized statistical rating
organization. Any replacement insurer with respect to a Mortgage Loan must have
at least as high a claims paying ability rating as the insurer it replaces had
on the Closing Date.

     Rating Agency: Each of the Rating Agencies specified in the Preliminary
Statement. If any of them or a successor is no longer in existence, "Rating
Agency" shall be the nationally recognized statistical rating organization, or
other comparable Person, identified as a "Rating Agency" under the Underwriter's
Exemption, and designated by the Depositor, notice of which designation shall be
given to the Trustee. References to a given rating or rating category of a
Rating Agency means the rating category without giving effect to any modifiers.

     Realized Loss: With respect to each Liquidated Mortgage Loan, an amount
(not less than zero or more than the Stated Principal Balance of the Mortgage
Loan) as of the date of such liquidation, equal to (i) the Stated Principal
Balance of the Liquidated Mortgage Loan as of the date of such liquidation, plus
(ii) interest at the Adjusted Net Mortgage Rate from the Due Date as to which
interest was last paid or advanced (and not reimbursed) to Certificateholders up
to the Due Date in the month in which Liquidation Proceeds are required to be
distributed on the Stated Principal Balance of such Liquidated Mortgage Loan
from time to time, minus (iii) the Liquidation Proceeds, if any, received during
the month in which such liquidation occurred, to the extent applied as
recoveries of interest at the Adjusted Net Mortgage Rate and to principal of the
Liquidated Mortgage Loan. With respect to each Mortgage Loan that has become the
subject of a Deficient Valuation, if the principal amount due under the related
Mortgage Note has been reduced, the difference between the principal balance of
the Mortgage Loan outstanding immediately prior to such Deficient Valuation and
the principal balance of the Mortgage Loan as reduced by the Deficient
Valuation. With respect to each Mortgage Loan that has become the subject of a
Debt Service Reduction and any Distribution Date, the amount, if any, by which
the principal portion of the related Scheduled Payment has been reduced.

     To the extent the Servicer receives Subsequent Recoveries with respect to
any Mortgage Loan, the amount of the Realized Loss with respect to that Mortgage
Loan will be reduced by such Subsequent Recoveries.

                                       25
<PAGE>

     Recognition Agreement: For any Cooperative Loan, an agreement between the
Cooperative Corporation and the originator of the Mortgage Loan that establishes
the rights of the originator in the Cooperative Property.

     Record Date: With respect to any Distribution Date and any Definitive
Certificate and the Delay Certificates, the close of business on the last
Business Day of the month preceding the month of that Distribution Date. With
respect to any Distribution Date and the Non-Delay Certificates as long as they
are Book-Entry Certificates, the Business Day immediately prior to such
Distribution Date.

     Reference Bank: As defined in Section 4.09.

     Refinance Loan: Any Mortgage Loan the proceeds of which are used to
refinance an Original Mortgage Loan.

     Regular Certificates: As specified in the Preliminary Statement.

     Regulation AB: Subpart 229.1100 - Asset Backed Securities (Regulation AB),
17 C.F.R. ss.ss.229.1100-229.1123, as such may be amended from time to time, and
subject to such clarification and interpretation as have been provided by the
Commission in the adopting release (Asset-Backed Securities, Securities Act
Release No. 33-8518, 70 Fed. Reg. 1,506, 1,531 (Jan. 7, 2005)) or by the staff
of the Commission, or as may be provided by the Commission or its staff from
time to time.

     Relief Act: The Servicemembers Civil Relief Act.

     Relief Act Reductions: With respect to any Distribution Date and any
Mortgage Loan as to which there has been a reduction in the amount of interest
collectible thereon for the most recently ended calendar month as a result of
the application of the Relief Act or any similar state or local laws, the
amount, if any, by which (i) interest collectible on such Mortgage Loan for the
most recently ended calendar month is less than (ii) interest accrued thereon
for such month pursuant to the Mortgage Note.

     REMIC: A "real estate mortgage investment conduit" within the meaning of
section 860D of the Code.

     REMIC Provisions: Provisions of the federal income tax law relating to real
estate mortgage investment conduits, which appear at sections 860A through 860G
of Subchapter M of Chapter 1 of the Code, and related provisions, and
regulations promulgated thereunder, as the foregoing may be in effect from time
to time as well as provisions of applicable state laws.

     REO Property: A Mortgaged Property acquired by the Trust Fund through
foreclosure or deed-in-lieu of foreclosure in connection with a defaulted
Mortgage Loan.

     Reportable Event: Any event required to be reported on Form 8-K, and in any
event, the following:

     (a) entry into a definitive agreement related to the Trust Fund, the
Certificates or the Mortgage Loans, or an amendment to a Transaction Document,
even if the Depositor is not a party to such agreement (e.g., a servicing
agreement with a servicer contemplated by Item 1108(a)(3) of Regulation AB);

     (b) termination of a Transaction Document (other than by expiration of the
agreement on its stated termination date or as a result of all parties
completing their obligations under such agreement),

                                       26
<PAGE>

even if the Depositor is not a party to such agreement (e.g., a servicing
agreement with a servicer contemplated by Item 1108(a)(3) of Regulation AB);

     (c) with respect to the Servicer only, if the Servicer becomes aware of any
bankruptcy or receivership with respect to the Seller, the Depositor, the
Servicer, the Trustee, the Cap Counterparty, any enhancement or support provider
contemplated by Items 1114(b) or 1115 of Regulation AB, or any other material
party contemplated by Item 1101(d)(1) of Regulation AB;

     (d) with respect to the Trustee, the Servicer and the Depositor only, the
occurrence of an early amortization, performance trigger or other event,
including an Event of Default under this Agreement;

     (e) any amendment to this Agreement;

     (f) the resignation, removal, replacement, substitution of the Servicer or
the Trustee;

     (g) with respect to the Servicer only, if the Servicer becomes aware that
(i) any material enhancement or support specified in Item 1114(a)(1) through (3)
of Regulation AB or Item 1115 of Regulation AB that was previously applicable
regarding one or more Classes of the Certificates has terminated other than by
expiration of the contract on its stated termination date or as a result of all
parties completing their obligations under such agreement; (ii) any material
enhancement specified in Item 1114(a)(1) through (3) of Regulation AB or Item
1115 of Regulation AB has been added with respect to one or more Classes of the
Certificates; or (iii) any existing material enhancement or support specified in
Item 1114(a)(1) through (3) of Regulation AB or Item 1115 of Regulation AB with
respect to one or more Classes of the Certificates has been materially amended
or modified; and

     (h) with respect to the Trustee, the Servicer and the Depositor only, a
required distribution to Holders of the Certificates is not made as of the
required Distribution Date under this Agreement.

     Reporting Date: As to any Distribution Date, the 18th day of each month or
if that day is not a Business Day, the Business Day preceding the 18th day of
the month.

     Reporting Subcontractor: With respect to the Servicer or the Trustee, any
Subcontractor determined by such Person pursuant to Section 11.08(b) to be
"participating in the servicing function" within the meaning of Item 1122 of
Regulation AB. References to a Reporting Subcontractor shall refer only to the
Subcontractor of such Person and shall not refer to Subcontractors generally.

     Request for Release: The Request for Release submitted by the Servicer to
the Trustee, substantially in the form of Exhibits M and N, as appropriate.

     Required Coupon: 6.00% per annum.

     Required Insurance Policy: For any Mortgage Loan, any insurance policy that
is required to be maintained from time to time under this Agreement.

     Residual Certificates: As specified in the Preliminary Statement.

     Responsible Officer: When used with respect to the Trustee, any Managing
Director, any Director, Vice President, any Assistant Vice President, any
Associate, any Assistant Secretary, any Trust Officer, or any other officer of
the Trustee customarily performing functions similar to those performed by any
of the above designated officers who at such time shall be officers to whom,
with respect to a

                                       27
<PAGE>

particular matter, the matter is referred because of the officer's knowledge of
and familiarity with the particular subject and who has direct responsibility
for the administration of this Agreement.

     Restricted Classes: As defined in Section 4.02(e).

     Reuters Page LIBOR01: The display page currently so designated as the
"LIBOR01" page on Reuters (or any page replacing that page on that service for
the purpose of displaying comparable rates or prices).

     SAIF: The Savings Association Insurance Fund, or any successor thereto.

     Sarbanes-Oxley Certification: As defined in Section 11.05.

     S&P: Standard & Poor's, a division of The McGraw-Hill Companies, Inc. If
S&P is designated as a Rating Agency in the Preliminary Statement, for purposes
of Section 10.05(b) the address for notices to S&P shall be Standard & Poor's, a
division of The McGraw-Hill Companies, Inc., 55 Water Street, New York, New York
10041, Attention: Mortgage Surveillance Monitoring, or any other address that
S&P furnishes to the Depositor and the Servicer.

     Scheduled Balance: Not applicable.

     Scheduled Classes: As specified in the Preliminary Statement.

     Scheduled Payment: The scheduled monthly payment on a Mortgage Loan due on
any Due Date allocable to principal and/or interest on such Mortgage Loan which,
unless otherwise specified herein, shall give effect to any related Debt Service
Reduction and any Deficient Valuation that affects the amount of the monthly
payment due on such Mortgage Loan.

     Scheduled Principal Distribution Amount: For any Distribution Date, an
amount equal to the Senior Percentage of the Non-PO Percentage of all amounts
described in subclauses (a) through (d) of clause (i) of the definition of
Non-PO Formula Principal Amount for such Distribution Date; provided, however,
that if a Bankruptcy Loss that is an Excess Loss is sustained with respect to a
Mortgage Loan that is not a Liquidated Mortgage Loan, the Scheduled Principal
Distribution Amount will be reduced on the related Distribution Date by the
Non-PO Percentage of the principal portion of such Bankruptcy Loss.

     Securities Act: The Securities Act of 1933, as amended.

     Security Agreement: For any Cooperative Loan, the agreement between the
owner of the related Co-op Shares and the originator of the related Mortgage
Note that defines the security interest in the Co-op Shares and the related
Proprietary Lease.

     Seller: IndyMac Bank, F.S.B., a federal savings bank, and its successors
and assigns, in its capacity as seller of the Mortgage Loans to the Depositor.

     Senior Certificate Group: Not applicable.

     Senior Certificates: As specified in the Preliminary Statement.

     Senior Credit Support Depletion Date: The date on which the Class
Certificate Balance of each Class of Subordinated Certificates has been reduced
to zero.

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<PAGE>

     Senior Liquidation Amount: For any Distribution Date and for each Mortgage
Loan that became a Liquidated Mortgage Loan during the calendar month preceding
the month of the Distribution Date, the lesser of (a) the Senior Percentage of
the applicable Non-PO Percentage of the Stated Principal Balance of the Mortgage
Loan and (b) either (x) if an Excess Loss was not sustained on the Liquidated
Mortgage Loan during the preceding calendar month, the Senior Prepayment
Percentage of the Non-PO Percentage of the amount of the Liquidation Proceeds
allocable to principal received on the Mortgage Loan or (y) if an Excess Loss
was sustained on the Liquidated Mortgage Loan during the preceding calendar
month, the Senior Percentage of the applicable Non-PO Percentage of the amount
of the Liquidation Proceeds allocable to principal received on the Mortgage
Loan.

     Senior Percentage: As to any Distribution Date, the percentage equivalent
(not greater than 100%) of a fraction the numerator of which is the aggregate
Class Certificate Balance of the Senior Certificates (other than the Class PO
Certificates and the Notional Amount Certificates) immediately before the
Distribution Date and the denominator of which is the aggregate Class
Certificate Balance of the Certificates (other than the Class PO Certificates
and the Notional Amount Certificates) immediately before the Distribution Date.

     Senior Prepayment Percentage: As to any Distribution Date during the five
years beginning on the first Distribution Date, 100%. The Senior Prepayment
Percentage for any Distribution Date occurring on or after the fifth anniversary
of the first Distribution Date will, except as provided in this Agreement, be as
follows: for any Distribution Date in the first year thereafter, the Senior
Percentage plus 70% of the Subordinated Percentage for such Distribution Date;
for any Distribution Date in the second year thereafter, the Senior Percentage
plus 60% of the Subordinated Percentage for such Distribution Date; for any
Distribution Date in the third year thereafter, the Senior Percentage plus 40%
of the Subordinated Percentage for such Distribution Date; for any Distribution
Date in the fourth year thereafter, the Senior Percentage plus 20% of the
Subordinated Percentage for such Distribution Date; and for any Distribution
Date thereafter, the Senior Percentage for such Distribution Date (unless on any
Distribution Date the Senior Percentage exceeds the initial Senior Percentage,
in which case the Senior Prepayment Percentage for such Distribution Date will
once again equal 100%). Notwithstanding the foregoing, no decrease in the Senior
Prepayment Percentage will occur unless both Senior Step Down Conditions are
satisfied.

     Senior Principal Distribution Amount: As to any Distribution Date, the sum
of (i) the Senior Percentage of the Non-PO Percentage of all amounts described
in subclauses (a) through (d) of clause (i) of the definition of Non-PO Formula
Principal Amount for such Distribution Date, (ii) the Senior Liquidation Amount
for that Distribution Date, and (iii) the Senior Prepayment Percentage of the
applicable Non-PO Percentage of the amounts described in subclause (f) of clause
(i) of the definition of Non-PO Formula Principal Amount for such Distribution
Date, and (iv) the Senior Prepayment Percentage of any Subsequent Recoveries
described in clause (ii) of the definition of Non-PO Formula Principal Amount
for such Distribution Date; provided, however, that if a Bankruptcy Loss that is
an Excess Loss is sustained with respect to a Mortgage Loan that is not a
Liquidated Mortgage Loan, the Senior Principal Distribution Amount will be
reduced on the related Distribution Date by the Senior Percentage of the
applicable Non-PO Percentage of the principal portion of such Bankruptcy Loss.

     Senior Step Down Conditions: As to any Distribution Date: (i) the aggregate
Stated Principal Balance of all Mortgage Loans delinquent 60 days or more
(averaged over the preceding six month period) (including any Mortgage Loans in
foreclosure proceedings, REO Property and Mortgage Loans the Mortgagors of which
are in bankruptcy), as a percentage of the aggregate Class Certificate Balance
of the Subordinated Certificates, does not equal or exceed 50%, and (ii)
cumulative Realized Losses do not exceed: (a) commencing with the Distribution
Date on the fifth anniversary of the first Distribution Date, 30% of the
Original Subordinated Principal Balance, (b) commencing with the Distribution
Date on the sixth anniversary of the first Distribution Date, 35% of the
Original Subordinated Principal Balance,

                                       29
<PAGE>

(c) commencing with the Distribution Date on the seventh anniversary of the
first Distribution Date, 40% of the Original Subordinated Principal Balance, (d)
commencing with the Distribution Date on the eighth anniversary of the first
Distribution Date, 45% of the Original Subordinated Principal Balance, and (e)
commencing with the Distribution Date on the ninth anniversary of the first
Distribution Date, 50% of the Original Subordinated Principal Balance

     Senior Termination Date: Not applicable.

     Servicer: IndyMac Bank, F.S.B., a federal savings bank, and its successors
and assigns, in its capacity as servicer under this Agreement.

     Servicer Advance Date: As to any Distribution Date, 12:30 P.M. Pacific time
on the Business Day preceding that Distribution Date.

     Servicing Advances: All customary, reasonable, and necessary "out of
pocket" costs and expenses incurred in the performance by the Servicer of its
servicing obligations, including the cost of

          (a) the preservation, restoration, and protection of a Mortgaged
     Property,

          (b) expenses reimbursable to the Servicer pursuant to Section 3.12 and
     any enforcement or judicial proceedings, including foreclosures,

          (c) the maintenance and liquidation of any REO Property,

          (d) compliance with the obligations under Section 3.10; and

          (e) reasonable compensation to the Servicer or its affiliates for
     acting as broker in connection with the sale of foreclosed Mortgaged
     Properties and for performing certain default management and other similar
     services (including appraisal services) in connection with the servicing of
     defaulted Mortgage Loans. For purposes of this clause (e), only costs and
     expenses incurred in connection with the performance of activities
     generally considered to be outside the scope of customary servicing duties
     shall be treated as Servicing Advances.

     Servicing Criteria: The "servicing criteria" set forth in Item 1122(d) of
Regulation AB.

     Servicing Fee: As to each Mortgage Loan and any Distribution Date, one
month's interest at the applicable Servicing Fee Rate on the Stated Principal
Balance of the Mortgage Loan as of the Due Date in the month preceding the month
of such Distribution Date or, whenever a payment of interest accompanies a
Principal Prepayment in Full made by the Mortgagor, interest at the Servicing
Fee Rate on the Stated Principal Balance of the Mortgage Loan for the period
covered by the payment of interest, subject to reduction as provided in Section
3.15.

     Servicing Fee Rate: For each Mortgage Loan, the per annum rate specified on
the Mortgage Loan Schedule.

     Servicing Officer: Any officer of the Servicer involved in, or responsible
for, the administration and servicing of the Mortgage Loans whose name and
facsimile signature appear on a list of servicing officers furnished to the
Trustee by the Servicer on the Closing Date pursuant to this Agreement, as the
list may from time to time be amended.

                                       30
<PAGE>

     Servicing Standard: That degree of skill and care exercised by the Servicer
with respect to mortgage loans comparable to the Mortgage Loans serviced by the
Servicer for itself or others.

     Shift Percentage: For any Distribution Date occurring during the five years
beginning on the first Distribution Date, 0%. For any Distribution Date
thereafter, 100%.

     Special Hazard Coverage Termination Date: The point in time at which the
Special Hazard Loss Coverage Amount is reduced to zero.

     Special Hazard Loss: Any Realized Loss suffered by a Mortgaged Property on
account of direct physical loss, but not including (i) any loss of a type
covered by a hazard insurance policy or a flood insurance policy required to be
maintained with respect to such Mortgaged Property pursuant to Section 3.10 to
the extent of the amount of such loss covered thereby, or (ii) any loss caused
by or resulting from:

          (a) normal wear and tear;

          (b) fraud, conversion or other dishonest act on the part of the
     Trustee, the Servicer or any of their agents or employees (without regard
     to any portion of the loss not covered by any errors and omissions policy);

          (c) errors in design, faulty workmanship or faulty materials, unless
     the collapse of the property or a part thereof ensues and then only for the
     ensuing loss;

          (d) nuclear or chemical reaction or nuclear radiation or radioactive
     or chemical contamination, all whether controlled or uncontrolled, and
     whether such loss be direct or indirect, proximate or remote or be in whole
     or in part caused by, contributed to or aggravated by a peril covered by
     the definition of the term "Special Hazard Loss";

          (e) hostile or warlike action in time of peace and war, including
     action in hindering, combating or defending against an actual, impending or
     expected attack:

               1. by any government or sovereign power, de jure or de facto, or
          by any authority maintaining or using military, naval or air forces;
          or

               2. by military, naval or air forces; or

               3. by an agent of any such government, power, authority or
          forces;

          (f) any weapon of war employing nuclear fission, fusion or other
     radioactive force, whether in time of peace or war; or

          (g) insurrection, rebellion, revolution, civil war, usurped power or
     action taken by governmental authority in hindering, combating or defending
     against such an occurrence, seizure or destruction under quarantine or
     customs regulations, confiscation by order of any government or public
     authority, or risks of contraband or illegal transportation or trade.

     Special Hazard Loss Coverage Amount: With respect to the first Distribution
Date, $4,900,000. With respect to any Distribution Date after the first
Distribution Date, the lesser of (a) the greatest of (i) 1% of the aggregate of
the principal balances of the Mortgage Loans, (ii) twice the principal balance
of the largest Mortgage Loan and (iii) the aggregate of the principal balances
of all Mortgage Loans secured by Mortgaged Properties located in the single
California postal zip code area having the highest aggregate

                                       31
<PAGE>

principal balance of any such zip code area and (b) the Special Hazard Loss
Coverage Amount as of the Closing Date less the amount, if any, of Special
Hazard Losses allocated to the Certificates since the Closing Date. All
principal balances for the purpose of this definition will be calculated as of
the first day of the calendar month preceding the month of such Distribution
Date after giving effect to Scheduled Payments on the Mortgage Loans then due,
whether or not paid.

     Special Hazard Mortgage Loan: A Liquidated Mortgage Loan as to which a
Special Hazard Loss has occurred.

     Startup Day: The Closing Date.

     Stated Principal Balance: As to any Mortgage Loan and Due Date, the unpaid
principal balance of such Mortgage Loan as of such Due Date, as specified in the
amortization schedule at the time relating thereto (before any adjustment to
such amortization schedule by reason of any moratorium or similar waiver or
grace period) after giving effect to the sum of: (i) the payment of principal
due on such Due Date and irrespective of any delinquency in payment by the
related Mortgagor and (ii) any Liquidation Proceeds allocable to principal
received in the prior calendar month and Principal Prepayments received through
the last day of the Prepayment Period in which the Due Date occurs, in each case
with respect to such Mortgage Loan.

     Subcontractor: Any vendor, subcontractor or other Person that is not
responsible for the overall servicing (as "servicing" is commonly understood by
participants in the mortgage-backed securities market) of Mortgage Loans but
performs one or more discrete functions identified in Item 1122(d) of Regulation
AB with respect to the Mortgage Loans under the direction or authority of the
Servicer or the Trustee, as the case may be.

     Subordinated Certificates: As specified in the Preliminary Statement.

     Subordinated Percentage: As to any Distribution Date, 100% minus the Senior
Percentage for such Distribution Date.

     Subordinated Prepayment Percentage: As to any Distribution Date, 100% minus
the Senior Prepayment Percentage for such Distribution Date.

     Subordinated Principal Distribution Amount: As to any Distribution Date,
the sum of the following: (i) the Subordinated Percentage of the applicable
Non-PO Percentage of all amounts described in subclauses (a) through (d) of
clause (i) of the definition of Non-PO Formula Principal Amount with respect to
such Distribution Date, (ii) for each Mortgage Loan that became a Liquidated
Mortgage Loan during the calendar month preceding the month of the Distribution
Date, the applicable Non-PO Percentage of the portion of the Liquidation
Proceeds allocable to principal received on the Mortgage Loan, after application
of the amounts pursuant to clause (ii) of the definition of Senior Principal
Distribution Amount, up to the Subordinated Percentage of the applicable Non-PO
Percentage of the Stated Principal Balance of the Mortgage Loan, and (iii) the
Subordinated Prepayment Percentage of the applicable Non-PO Percentage of the
amounts described in subclause (f) of clause (i) and in clause (ii) of the
definition of Non-PO Formula Principal Amount with respect to such Distribution
Date, reduced by the amount of any payments in respect of Class PO Deferred
Amounts for such Distribution Date.

     Subsequent Recoveries: As to any Distribution Date, with respect to a
Liquidated Mortgage Loan that resulted in a Realized Loss in a prior calendar
month, unexpected amounts received by the Servicer (net of any related expenses
permitted to be reimbursed pursuant to Section 3.09) specifically related to
such Liquidated Mortgage Loan.

                                       32
<PAGE>

     Substitute Mortgage Loan: A Mortgage Loan substituted by the Seller for a
Deleted Mortgage Loan that must, on the date of substitution, as confirmed in a
Request for Release, substantially in the form of Exhibit M,

     (i) have a Stated Principal Balance, after deduction of the principal
portion of the Scheduled Payment due in the month of substitution, not in excess
of, and not more than 10% less than, the Stated Principal Balance of the Deleted
Mortgage Loan (unless the amount of any shortfall is deposited by the Seller in
the Certificate Account and held for distribution to the Certificateholders on
the related Distribution Date);

     (ii) have a Mortgage Rate no lower than and not more than 1% per annum
higher than the Deleted Mortgage Loan;

     (iii) have a Loan-to-Value Ratio no higher than that of the Deleted
Mortgage Loan;

     (iv) have a remaining term to maturity not more than one year greater than
(and not more than one year less than) that of the Deleted Mortgage Loan,
provided that Substitute Mortgage Loan with a remaining term to maturity greater
than that of the Deleted Mortgage Loan may not exceed 5% of the Cut-off Date
Pool Principal Balance;

     (v) not be a Cooperative Loan unless the Deleted Mortgage Loan was a
Cooperative Loan; and

     (vi) comply with each representation and warranty in Section 2.03.

     Substitution Adjustment Amount: As defined in Section 2.03.

     Supplemental Interest Reserve Fund: Not applicable.

     Supplemental Interest Trust: Not applicable.

     Supplemental Interest Trustee: Not applicable.

     Suspension Notification: Notification to the Commission of the suspension
of the Trust Fund's obligation to file reports pursuant to Section 15(d) of the
Exchange Act.

     Targeted Balance: With respect to the Class A-3 Certificates and any
Distribution Date appearing in the Principal Balance Schedule, the applicable
amount appearing opposite such Distribution Date for the Class A-3 Certificates.

     Targeted Principal Classes: As specified in the Preliminary Statement.

     Transaction Documents: This Agreement and any other document or agreement
entered into in connection with the Trust Fund, the Certificates or the Mortgage
Loans.

     Transfer: Any direct or indirect transfer or sale of any Ownership Interest
in a Residual Certificate.

     Transfer Payment Made: Not applicable.

     Transfer Payment Received: Not applicable.

                                       33
<PAGE>

     Trust Fund: The corpus of the trust created under this Agreement consisting
of

     (i) the Mortgage Loans and all interest and principal received on them
after the Cut-off Date, other than amounts due on the Mortgage Loans by the
Cut-off Date;

     (ii) the Certificate Account, the Distribution Account and all amounts
deposited therein pursuant to this Agreement (including amounts received from
the Depositor on the Closing Date that will be deposited by the Depositor in the
Certificate Account pursuant to Section 2.01);

     (iii) property that secured a Mortgage Loan and has been acquired by
foreclosure, deed-in-lieu of foreclosure, or otherwise;

     (iv) the right to collect any amounts under any mortgage insurance policies
covering any Mortgage Loan and any collections received under any mortgage
insurance policies covering any Mortgage Loan;

     (v) [reserved]; and

     (vi) all proceeds of the conversion, voluntary or involuntary, of any of
the foregoing.

     Trustee: Deutsche Bank National Trust Company and its successors and, if a
successor trustee is appointed under this Agreement, the successor.

     Trustee Fee: The fee payable to the Trustee on each Distribution Date for
its services as Trustee hereunder, in an amount equal to one-twelfth of the
Trustee Fee Rate multiplied by the aggregate Stated Principal Balance of the
Mortgage Loans as of the Due Date in the month preceding the month of such
Distribution Date (after giving effect to Principal Prepayments in the
Prepayment Period related to that prior Due Date).

     Trustee Fee Rate: 0.010% per annum.

     The terms "United States," "State," and "International Organization" have
the meanings in section 7701 of the Code or successor provisions. A corporation
will not be treated as an instrumentality of the United States or of any State
or political subdivision thereof for these purposes if all of its activities are
subject to tax and, with the exception of the Federal Home Loan Mortgage
Corporation, a majority of its board of directors is not selected by such
government unit.

     UCC: The Uniform Commercial Code for the State of New York.

     Undercollateralized Group: Not applicable.

     Underwriter's Exemption: Prohibited Transaction Exemption 2002-41, 67 Fed.
Reg. 54487 (2002) (or any successor thereto), or any substantially similar
administrative exemption granted by the U.S. Department of Labor.

     United States Person or U.S. Person:

     (i) A citizen or resident of the United States;

     (ii) a corporation (or entity treated as a corporation for tax purposes)
created or organized in the United States or under the laws of the United States
or of any state thereof, including, for this purpose, the District of Columbia;

                                       34
<PAGE>

     (iii) a partnership (or entity treated as a partnership for tax purposes)
organized in the United States or under the laws of the United States or of any
state thereof, including, for this purpose, the District of Columbia (unless
provided otherwise by future Treasury regulations);

     (iv) an estate whose income is includible in gross income for United States
income tax purposes regardless of its source; or

     (v) a trust, if a court within the United States is able to exercise
primary supervision over the administration of the trust and one or more U.S.
Persons have authority to control all substantial decisions of the trust.
Notwithstanding the last clause of the preceding sentence, to the extent
provided in Treasury regulations, certain trusts in existence on August 20,
1996, and treated as U.S. Persons before that date, may elect to continue to be
U.S. Persons.

     Unscheduled Principal Distribution Amount: For any Distribution Date, the
sum of (i) the sum of (A) the Senior Liquidation Amount and (B) the amount set
forth under clause (ii) of the definition of Subordinated Principal Distribution
Amount, (ii) the Senior Percentage of the Non-PO Percentage of the sum of the
amounts set forth under subclause (f) of clause (i) of the definition of Non-PO
Formula Principal Amount for such Distribution Date and (iii) any Subsequent
Recoveries described in clause (ii) of the definition of Non-PO Formula
Principal Amount for that Distribution Date.

     U.S.A. Patriot Act: The Uniting and Strengthening America by Providing
Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001.

     Voting Rights: The portion of the voting rights of all of the Certificates
that is allocated to any Certificate. As of any date of determination, (a) 1% of
all Voting Rights shall be allocated to each Class of Notional Amount
Certificates (the Voting Rights to be allocated among the holders of
Certificates of each Class in accordance with their respective Percentage
Interests), (b) 1% of all Voting Rights shall be allocated to the Holder of the
Class A-R Certificates and (c) the remaining Voting Rights shall be allocated
among Holders of the remaining Classes of Senior and Subordinated Certificates
in proportion to the Certificate Balances of the respective Certificates on the
date.

     Yield Supplement Amount: Not applicable.

     Section 1.02 Rules of Construction.

     Except as otherwise expressly provided in this Agreement or unless the
context clearly requires otherwise

     (a) References to designated articles, sections, subsections, exhibits, and
other subdivisions of this Agreement, such as "Section 6.12 (a)," refer to the
designated article, section, subsection, exhibit, or other subdivision of this
Agreement as a whole and to all subdivisions of the designated article, section,
subsection, exhibit, or other subdivision. The words "herein," "hereof,"
"hereto," "hereunder," and other words of similar import refer to this Agreement
as a whole and not to any particular article, section, exhibit, or other
subdivision of this Agreement.

     (b) Any term that relates to a document or a statute, rule, or regulation
includes any amendments, modifications, supplements, or any other changes that
may have occurred since the document, statute, rule, or regulation came into
being, including changes that occur after the date of this Agreement.

     (c) Any party may execute any of the requirements under this Agreement
either directly or through others, and the right to cause something to be done
rather than doing it directly shall be implicit

                                       35
<PAGE>

in every requirement under this Agreement. Unless a provision is restricted as
to time or limited as to frequency, all provisions under this Agreement are
implicitly available and things may happen from time to time.

     (d) The term "including" and all its variations mean "including but not
limited to." Except when used in conjunction with the word "either," the word
"or" is always used inclusively (for example, the phrase "A or B" means "A or B
or both," not "either A or B but not both").

     (e) A reference to "a [thing]" or "any [of a thing]" does not imply the
existence or occurrence of the thing referred to even though not followed by "if
any," and "any [of a thing]" is any of it. A reference to the plural of anything
as to which there could be either one or more than one does not imply the
existence of more than one (for instance, the phrase "the obligors on a note"
means "the obligor or obligors on a note"). "Until [something occurs]" does not
imply that it must occur, and will not be modified by the word "unless." The
word "due" and the word "payable" are each used in the sense that the stated
time for payment has passed. The word "accrued" is used in its accounting sense,
i.e., an amount paid is no longer accrued. In the calculation of amounts of
things, differences and sums may generally result in negative numbers, but when
the calculation of the excess of one thing over another results in zero or a
negative number, the calculation is disregarded and an "excess" does not exist.
Portions of things may be expressed as fractions or percentages interchangeably.

     (f) All accounting terms used in an accounting context and not otherwise
defined, and accounting terms partly defined in this Agreement, to the extent
not completely defined, shall be construed in accordance with generally accepted
accounting principles. To the extent that the definitions of accounting terms in
this Agreement are inconsistent with their meanings under generally accepted
accounting principles, the definitions contained in this Agreement shall
control. Capitalized terms used in this Agreement without definition that are
defined in the Uniform Commercial Code are used in this Agreement as defined in
the Uniform Commercial Code.

     (g) In the computation of a period of time from a specified date to a later
specified date or an open-ended period, the words "from" and "beginning" mean
"from and including," the word "after" means "from but excluding," the words
"to" and "until" mean "to but excluding," and the word "through" means "to and
including." Likewise, in setting deadlines or other periods, "by" means "by."
The words "preceding," "following," and words of similar import, mean
immediately preceding or following. References to a month or a year refer to
calendar months and calendar years.

     (h) Any reference to the enforceability of any agreement against a party
means that it is enforceable, subject as to enforcement against the party, to
applicable bankruptcy, insolvency, reorganization, and other similar laws of
general applicability relating to or affecting creditors' rights and to general
equity principles.

                                       36
<PAGE>

                                   ARTICLE TWO

          CONVEYANCE OF MORTGAGE LOANS; REPRESENTATIONS AND WARRANTIES

     Section 2.01 Conveyance of Mortgage Loans.

     (a) The Seller, concurrently with the execution and delivery of this
Agreement, hereby transfers to the Depositor, without recourse, all the interest
of the Seller in each Mortgage Loan, including all interest and principal
received or receivable by the Seller on each Mortgage Loan after the Cut-off
Date and all interest and principal payments on each Mortgage Loan received
before the Cut-off Date for installments of interest and principal due after the
Cut-off Date but not including payments of principal and interest due by the
Cut-off Date. By the Closing Date, the Seller shall deliver to the Depositor or,
at the Depositor's direction, to the Trustee or other designee of the Depositor,
the Mortgage File for each Mortgage Loan listed in the Mortgage Loan Schedule
(except that, in the case of Mortgage Loans that are Delay Delivery Mortgage
Loans, such delivery may take place within five Business Days of the Closing
Date) as of the Closing Date. The delivery of the Mortgage Files shall be made
against payment by the Depositor of the purchase price, previously agreed to by
the Seller and Depositor, for the Mortgage Loans. With respect to any Mortgage
Loan that does not have a first payment date on or before the Due Date in the
month of the first Distribution Date, the Seller shall deposit into the
Distribution Account on the first Distribution Account Deposit Date an amount
equal to one month's interest at the related Adjusted Mortgage Rate on the
Cut-off Date Principal Balance of such Mortgage Loan. On the Closing Date the
Depositor shall deposit $100 into the Certificate Account for the benefit of the
Class P Certificates.

     (b) The Depositor, concurrently with the execution and delivery of this
Agreement, hereby transfers to the Trustee for the benefit of the
Certificateholders, without recourse, all the interest of the Depositor in the
Trust Fund, together with the Depositor's right to require the Seller to cure
any breach of a representation or warranty made in this Agreement by the Seller
or to repurchase or substitute for any affected Mortgage Loan in accordance with
this Agreement.

     (c) In connection with the transfer and assignment of each Mortgage Loan,
the Depositor has delivered (or, in the case of the Delay Delivery Mortgage
Loans, will deliver to the Trustee within the time periods specified in the
definition of Delay Delivery Mortgage Loans), for the benefit of the
Certificateholders the following documents or instruments with respect to each
Mortgage Loan so assigned:

          (i) The original Mortgage Note, endorsed by manual or facsimile
     signature in blank in the following form: "Pay to the order of
     _______________ ______________without recourse," with all intervening
     endorsements showing a complete chain of endorsement from the originator to
     the Person endorsing the Mortgage Note (each endorsement being sufficient
     to transfer all interest of the party so endorsing, as noteholder or
     assignee thereof, in that Mortgage Note) or a lost note affidavit for any
     Lost Mortgage Note from the Seller stating that the original Mortgage Note
     was lost or destroyed, together with a copy of the Mortgage Note;

          (ii) Except as provided below and for each Mortgage Loan that is not a
     MERS Mortgage Loan, the original recorded Mortgage or a copy of such
     Mortgage certified by the Seller as being a true and complete copy of the
     Mortgage (or, in the case of a Mortgage for which the related Mortgaged
     Property is located in the Commonwealth of Puerto Rico, a true copy of the
     Mortgage certified as such by the applicable notary) and in the case of
     each MERS Mortgage Loan, the original Mortgage, noting the presence of the
     MIN of the Mortgage Loan and either language indicating that the Mortgage
     Loan is a MOM Loan if the Mortgage Loan is a MOM

                                       37
<PAGE>

     Loan or if the Mortgage Loan was not a MOM Loan at origination, the
     original Mortgage and the assignment thereof to MERS, with evidence of
     recording indicated thereon, or a copy of the Mortgage certified by the
     public recording office in which such Mortgage has been recorded;

          (iii) In the case of a Mortgage Loan that is not a MERS Mortgage Loan,
     a duly executed assignment of the Mortgage (which may be included in a
     blanket assignment or assignments), together with, except as provided
     below, all interim recorded assignments of the mortgage (each assignment,
     when duly and validly completed, to be in recordable form and sufficient to
     effect the assignment of and transfer to its assignee of the Mortgage to
     which the assignment relates). If the related Mortgage has not been
     returned from the applicable public recording office, the assignment of the
     Mortgage may exclude the information to be provided by the recording
     office. The assignment of Mortgage need not be delivered in the case of a
     Mortgage for which the related Mortgage Property is located in the
     Commonwealth of Puerto Rico;

          (iv) The original or copies of each assumption, modification, written
     assurance, or substitution agreement;

          (v) Except as provided below, the original or duplicate original
     lender's title policy and all its riders;

          (vi) The originals of the following documents for each Cooperative
     Loan:

               (A)  the Co-op Shares, together with a stock power in blank;

               (B)  the executed Security Agreement;

               (C)  the executed Proprietary Lease;

               (D)  the executed Recognition Agreement;

               (E)  the executed UCC-1 financing statement that has been filed
                    in all places required to perfect the Seller's interest in
                    the Co-op Shares and the Proprietary Lease with evidence of
                    recording on it; and

               (F)  executed UCC-3 financing statements or other appropriate UCC
                    financing statements required by state law, evidencing a
                    complete and unbroken line from the mortgagee to the Trustee
                    with evidence of recording thereon (or in a form suitable
                    for recordation).

        In addition, in connection with the assignment of any MERS Mortgage
Loan, the Seller agrees that it will cause, at the Seller's expense, the MERS(R)
System to indicate that the Mortgage Loans sold by the Seller to the Depositor
have been assigned by the Seller to the Trustee in accordance with this
Agreement for the benefit of the Certificateholders by including (or deleting,
in the case of Mortgage Loans that are repurchased in accordance with this
Agreement) in such computer files the information required by the MERS(R) System
to identify the series of the Certificates issued in connection with such
Mortgage Loans. The Seller further agrees that it will not, and will not permit
the Servicer to, and the Servicer agrees that it will not, alter the information
referenced in this paragraph with respect to any Mortgage Loan sold by the
Seller to the Depositor during the term of this Agreement unless and until such
Mortgage Loan is repurchased in accordance with the terms of this Agreement.

                                       38
<PAGE>

     In the event that in connection with any Mortgage Loan that is not a MERS
Mortgage Loan the Depositor cannot deliver (a) the original recorded Mortgage,
(b) all interim recorded assignments or (c) the lender's title policy (together
with all riders thereto) satisfying the requirements of clause (ii), (iii) or
(v) above, respectively, concurrently with the execution and delivery of this
Agreement because such document or documents have not been returned from the
applicable public recording office in the case of clause (ii) or (iii) above, or
because the title policy has not been delivered to either the Servicer or the
Depositor by the applicable title insurer in the case of clause (v) above, then
the Depositor shall promptly deliver to the Trustee, in the case of clause (ii)
or (iii) above, the original Mortgage or the interim assignment, as the case may
be, with evidence of recording indicated on when it is received from the public
recording office, or a copy of it, certified, if appropriate, by the relevant
recording office and in the case of clause (v) above, the original or a copy of
a written commitment or interim binder or preliminary report of title issued by
the title insurance or escrow company, with the original or duplicate copy
thereof to be delivered to the Trustee upon receipt thereof. The delivery of the
original Mortgage Loan and each interim assignment or a copy of them, certified,
if appropriate, by the relevant recording office, shall not be made later than
one year following the Closing Date, or, in the case of clause (v) above, later
than 120 days following the Closing Date. If the Depositor is unable to deliver
each Mortgage by that date and each interim assignment because any documents
have not been returned by the appropriate recording office, or, in the case of
each interim assignment, because the related Mortgage has not been returned by
the appropriate recording office, the Depositor shall deliver the documents to
the Trustee as promptly as possible upon their receipt and, in any event, within
720 days following the Closing Date.

     The Depositor shall forward to the Trustee (a) from time to time additional
original documents evidencing an assumption or modification of a Mortgage Loan
and (b) any other documents required to be delivered by the Depositor or the
Servicer to the Trustee. If the original Mortgage is not delivered and in
connection with the payment in full of the related Mortgage Loan the public
recording office requires the presentation of a "lost instruments affidavit and
indemnity" or any equivalent document, because only a copy of the Mortgage can
be delivered with the instrument of satisfaction or reconveyance, the Servicer
shall execute and deliver the required document to the public recording office.
If a public recording office retains the original recorded Mortgage or if a
Mortgage is lost after recordation in a public recording office, the Seller
shall deliver to the Trustee a copy of the Mortgage certified by the public
recording office to be a true and complete copy of the original recorded
Mortgage.

     As promptly as practicable after any transfer of a Mortgage Loan under this
Agreement, and in any event within thirty days after the transfer, the Trustee
shall (i) affix the Trustee's name to each assignment of Mortgage, as its
assignee, and (ii) cause to be delivered for recording in the appropriate public
office for real property records the assignments of the Mortgages to the
Trustee, except that, if the Trustee has not received the information required
to deliver any assignment of a Mortgage for recording, the Trustee shall deliver
it as soon as practicable after receipt of the needed information and in any
event within thirty days.

     If any Mortgage Loans have been prepaid in full as of the Closing Date, the
Depositor, in lieu of delivering the above documents to the Trustee, will
deposit in the Certificate Account the portion of the prepayment that is
required to be deposited in the Certificate Account pursuant to Section 3.06.

     Notwithstanding anything to the contrary in this Agreement, within five
Business Days after the Closing Date, the Seller shall either

          (x) deliver to the Trustee the Mortgage File as required pursuant to
          this Section 2.01 for each Delay Delivery Mortgage Loan or

                                       39
<PAGE>

          (y) (A) repurchase the Delay Delivery Mortgage Loan or (B) substitute
          the Substitute Mortgage Loan for a Delay Delivery Mortgage Loan, which
          repurchase or substitution shall be accomplished in the manner and
          subject to the conditions in Section 2.03 (treating each such Delay
          Delivery Mortgage Loan as a Deleted Mortgage Loan for purposes of such
          Section 2.03);

provided, however, that if the Seller fails to deliver a Mortgage File for any
Delay Delivery Mortgage Loan within the period specified herein, the Seller
shall use its best reasonable efforts to effect a substitution, rather than a
repurchase of, such Deleted Mortgage Loan and provided further that the cure
period provided for in Section 2.02 or in Section 2.03 shall not apply to the
initial delivery of the Mortgage File for such Delay Delivery Mortgage Loan, but
rather the Seller shall have five (5) Business Days to cure such failure to
deliver. At the end of such period, the Trustee shall send a Delay Delivery
Certification for the Delay Delivery Mortgage Loans delivered during such period
in accordance with the provisions of Section 2.02.

     (d) Notwithstanding the foregoing, however, the assignments of Mortgage
shall not be required to be submitted for recording (except with respect to any
Mortgage Loan secured by Mortgaged Property located in Maryland) unless such
failure to record would, as certified to the Trustee in writing by the Servicer,
result in a withdrawal or a downgrading by any Rating Agency of the rating on
any Class of Certificates; provided, however, that each assignment of Mortgage
shall be submitted for recording by the Seller (at the direction of the
Servicer) in the manner described above, at no expense to the Trust Fund or the
Trustee, upon the earliest to occur of: (i) reasonable direction by the Holders
of Certificates entitled to at least 25% of the Voting Rights, (ii) the
occurrence of a bankruptcy, insolvency or foreclosure relating to the Seller,
(iii) the occurrence of a servicing transfer as described in Section 7.02 and
(iv) if the Seller is not the Servicer and with respect to any one assignment or
Mortgage, the occurrence of a bankruptcy, insolvency or foreclosure relating to
the Mortgagor under the related Mortgage. Notwithstanding the foregoing, if the
Seller is unable to pay the cost of recording the assignments of Mortgage, such
expense shall be paid by the Trustee and shall be reimbursable out of the
Distribution Account.

     (e) The Seller agrees to treat the transfer of the Mortgage Loans to the
Depositor as a sale for all tax, accounting, and regulatory purposes.

     (f) The Trust Fund does not intend to acquire or hold any Mortgage Loan
that would violate the representations made by the Seller set forth in clause
(28) of Schedule III.

     Section 2.02 Acceptance by the Trustee of the Mortgage Loans.

     The Trustee acknowledges receipt of the documents identified in the Initial
Certification in the form of Exhibit G-1, and declares that it holds and will
hold such documents and the other documents delivered to it constituting the
Mortgage Files for the Mortgage Loans, and that it holds or will hold such other
assets as are included in the Trust Fund, in trust for the exclusive use and
benefit of all present and future Certificateholders.

     The Trustee acknowledges that it will maintain possession of the related
Mortgage Notes in the State of California, unless otherwise permitted by the
Rating Agencies. The Trustee agrees to execute and deliver on the Closing Date
to the Depositor, the Servicer and the Seller an Initial Certification in the
form of Exhibit G-1. Based on its review and examination, and only as to the
documents identified in such Initial Certification, the Trustee acknowledges
that such documents appear regular on their face and relate to such Mortgage
Loans. The Trustee shall be under no duty or obligation to inspect, review or
examine said documents, instruments, certificates or other papers to determine
that the same are genuine,

                                       40
<PAGE>

enforceable or appropriate for the represented purpose or that they have
actually been recorded in the real estate records or that they are other than
what they purport to be on their face.

     By the thirtieth day after the Closing Date (or if that day is not a
Business Day, the succeeding Business Day), the Trustee shall deliver to the
Depositor, the Servicer, and the Seller a Delay Delivery Certification with
respect to the Mortgage Loans substantially in the form of Exhibit G-2, with any
applicable exceptions noted thereon.

     By the ninetieth day after the Closing Date (or if that day is not a
Business Day, the succeeding Business Day), the Trustee shall deliver to the
Depositor, the Servicer and the Seller a Final Certification with respect to the
Mortgage Loans in the form of Exhibit H, with any applicable exceptions noted
thereon.

     If, in the course of its review, the Trustee finds any document
constituting a part of a Mortgage File that does not meet the requirements of
Section 2.01, the Trustee shall list such as an exception in the Final
Certification. The Trustee shall not make any determination as to whether (i)
any endorsement is sufficient to transfer all interest of the party so
endorsing, as noteholder or assignee thereof, in that Mortgage Note or (ii) any
assignment is in recordable form or is sufficient to effect the assignment of
and transfer to the assignee thereof under the mortgage to which the assignment
relates. The Seller shall promptly correct any defect that materially and
adversely affects the interests of the Certificateholders within 90 days from
the date it was so notified of the defect and, if the Seller does not correct
the defect within that period, the Seller shall either (a) substitute for the
related Mortgage Loan a Substitute Mortgage Loan, which substitution shall be
accomplished in the pursuant Section 2.03, or (b) purchase the Mortgage Loan at
its Purchase Price from the Trustee within 90 days from the date the Seller was
notified of the defect in writing.

     If a substitution or purchase of a Mortgage Loan pursuant to this provision
is required because of a delay in delivery of any documents by the appropriate
recording office, or there is a dispute between either the Servicer or the
Seller and the Trustee over the location or status of the recorded document,
then the substitution or purchase shall occur within 720 days from the Closing
Date. In no other case may a substitution or purchase occur more than 540 days
from the Closing Date. Any substitution shall not be effected before the
delivery to the Trustee of the Opinion of Counsel, if required by Section 2.05,
and any substitution shall not be effected before the additional delivery to the
Trustee of a Request for Release substantially in the form of Exhibit N. No
substitution is permitted to be made in any calendar month after the
Determination Date for the month.

     The Purchase Price for any Mortgage Loan shall be deposited by the Seller
in the Certificate Account by the Distribution Account Deposit Date for the
Distribution Date in the month following the month of repurchase and, upon
receipt of the deposit and certification with respect thereto in the form of
Exhibit N, the Trustee shall release the related Mortgage File to the Seller and
shall execute and deliver at the Seller's request any instruments of transfer or
assignment prepared by the Seller, in each case without recourse, necessary to
vest in the Seller, or a designee, the Trustee's interest in any Mortgage Loan
released pursuant hereto.

     If pursuant to the foregoing provisions the Seller repurchases a Mortgage
Loan that is a MERS Mortgage Loan, the Servicer shall either (i) cause MERS to
execute and deliver an assignment of the Mortgage in recordable form to transfer
the Mortgage from MERS to the Seller and shall cause such Mortgage to be removed
from registration on the MERS(R) System in accordance with MERS' rules and
regulations or (ii) cause MERS to designate on the MERS(R) System the Seller as
the beneficial holder of such Mortgage Loan.

                                       41
<PAGE>

     The Trustee shall retain possession and custody of each Mortgage File in
accordance with and subject to the terms and conditions set forth herein. The
Servicer shall promptly deliver to the Trustee, upon the execution or receipt
thereof, the originals of any other documents or instruments constituting the
Mortgage File that come into the possession of the Servicer from time to time.

     The obligation of the Seller to substitute for or to purchase any Mortgage
Loan that does not meet the requirements of Section 2.01 shall constitute the
sole remedy respecting the defect available to the Trustee, the Depositor, and
any Certificateholder against the Seller.

     Section 2.03 Representations, Warranties, and Covenants of the Seller and
the Servicer.

     (a) IndyMac, in its capacities as Seller and Servicer, makes the
representations and warranties in Schedule II, and by this reference
incorporated in this Agreement, to the Depositor and the Trustee, as of the
Closing Date.

     (b) The Seller, in its capacity as Seller, makes the representations and
warranties in Schedule III, and by this reference incorporated in this
Agreement, to the Depositor and the Trustee, as of the Closing Date, or if so
specified in Schedule III, as of the Cut-off Date.

     (c) Upon discovery by any of the parties hereto of a breach of a
representation or warranty made pursuant to Section 2.03(b) that materially and
adversely affects the interests of the Certificateholders in any Mortgage Loan,
the party discovering such breach shall give prompt notice thereof to the other
parties. Any breach of the representations or warranties made pursuant to
clauses (28) and (33) of Schedule III shall be deemed to materially and
adversely affect the interests of the Certificateholders in the related Mortgage
Loan. The Seller covenants that within 90 days of the earlier of its discovery
or its receipt of written notice from any party of a breach of any
representation or warranty made pursuant to Section 2.03(b) which materially and
adversely affects the interests of the Certificateholders in any Mortgage Loan,
it shall cure such breach in all material respects, and if such breach is not so
cured, shall, (i) if the 90-day period expires before the second anniversary of
the Closing Date, remove the Mortgage Loan (a "Deleted Mortgage Loan") from the
Trust Fund and substitute in its place a Substitute Mortgage Loan, in accordance
with this Section 2.03; or (ii) repurchase the affected Mortgage Loan or
Mortgage Loans from the Trustee at the Purchase Price in the manner set forth
below. Any substitution pursuant to (i) above shall not be effected before the
delivery to the Trustee of the Opinion of Counsel required by Section 2.05, and
a Request for Release substantially in the form of Exhibit N, and the Mortgage
File for any Substitute Mortgage Loan. The Seller shall promptly reimburse the
Servicer and the Trustee for any expenses reasonably incurred by the Servicer or
the Trustee in respect of enforcing the remedies for the breach.

     With respect to any Substitute Mortgage Loan or Loans, the Seller shall
deliver to the Trustee for the benefit of the Certificateholders the Mortgage
Note, the Mortgage, the related assignment of the Mortgage, and such other
documents and agreements as are required by Section 2.01, with the Mortgage Note
endorsed and the Mortgage assigned as required by Section 2.01. No substitution
is permitted to be made in any calendar month after the Determination Date for
such month. Scheduled Payments due with respect to Substitute Mortgage Loans in
the month of substitution shall not be part of the Trust Fund and will be
retained by the Seller on the next succeeding Distribution Date. For the month
of substitution, distributions to Certificateholders will include the monthly
payment due on any Deleted Mortgage Loan for such month and thereafter the
Seller shall be entitled to retain all amounts received in respect of such
Deleted Mortgage Loan.

     The Servicer shall amend the Mortgage Loan Schedule for the benefit of the
Certificateholders to reflect the removal of the Deleted Mortgage Loan and the
substitution of the Substitute Mortgage Loans

                                       42
<PAGE>

and the Servicer shall deliver the amended Mortgage Loan Schedule to the
Trustee. Upon the substitution, the Substitute Mortgage Loans shall be subject
to this Agreement in all respects, and the Seller shall be deemed to have made
with respect to the Substitute Mortgage Loans, as of the date of substitution,
the representations and warranties made pursuant to Section 2.03(b) with respect
to the Mortgage Loan. Upon any substitution and the deposit to the Certificate
Account of the amount required to be deposited therein in connection with the
substitution as described in the following paragraph, the Trustee shall release
the Mortgage File held for the benefit of the Certificateholders relating to the
Deleted Mortgage Loan to the Seller and shall execute and deliver at the
Seller's direction such instruments of transfer or assignment prepared by the
Seller, in each case without recourse, as shall be necessary to vest title in
the Seller, or its designee, the Trustee's interest in any Deleted Mortgage Loan
substituted for pursuant to this Section 2.03.

     For any month in which the Seller substitutes one or more Substitute
Mortgage Loans for one or more Deleted Mortgage Loans, the Servicer will
determine the amount (if any) by which the aggregate principal balance of all
such Substitute Mortgage Loans as of the date of substitution is less than the
aggregate Stated Principal Balance of all such Deleted Mortgage Loans (after
application of the scheduled principal portion of the monthly payments due in
the month of substitution). The amount of such shortage (the "Substitution
Adjustment Amount") plus, if the Seller is not the Servicer, an amount equal to
the aggregate of any unreimbursed Advances and Servicer Advances with respect to
such Deleted Mortgage Loans shall be deposited into the Certificate Account by
the Seller by the Distribution Account Deposit Date for the Distribution Date in
the month succeeding the calendar month during which the related Mortgage Loan
became required to be purchased or replaced hereunder. If the Seller repurchases
a Mortgage Loan, the Purchase Price therefor shall be deposited in the
Certificate Account pursuant to Section 3.06 by the Distribution Account Deposit
Date for the Distribution Date in the month following the month during which the
Seller became obligated hereunder to repurchase or replace the Mortgage Loan and
upon such deposit of the Purchase Price and receipt of a Request for Release in
the form of Exhibit N, the Trustee shall release the related Mortgage File held
for the benefit of the Certificateholders to such Person, and the Trustee shall
execute and deliver at such Person's direction such instruments of transfer or
assignment prepared by such Person, in each case without recourse, as shall be
necessary to transfer title from the Trustee. The obligation under this
Agreement of any Person to cure, repurchase, or replace any Mortgage Loan as to
which a breach has occurred and is continuing shall constitute the sole remedy
against the Person respecting the breach available to Certificateholders, the
Depositor, or the Trustee on their behalf.

     The representations and warranties made pursuant to this Section 2.03 shall
survive delivery of the respective Mortgage Files to the Trustee for the benefit
of the Certificateholders and shall not be waived by the Depositor.

     The Seller assigns to the Depositor and the Depositor assigns to the
Trustee all rights the Seller might have under contracts with third parties
relating to early payment defaults on the Mortgage Loans ("EPD Rights") and the
Servicer assumes any related duties as part of its servicing obligations.
Consistent with the Servicing Standard, the Servicer shall attempt to enforce
the EPD Rights. If the Servicer's enforcement of the EPD Rights obligates the
Servicer to sell a Mortgage Loan to a third party, the Servicer shall repurchase
the Mortgage Loan at the Purchase Price and sell the Mortgage Loan to the third
party, provided however, in no case shall the Servicer be obligated to
repurchase a Mortgage Loan on account of EPD Rights unless and until the
Servicer shall have previously received repurchase payment from a third party.
The Servicer shall deposit into the Certificate Account all amounts received in
connection with the enforcement of EPD Rights, not exceeding the Purchase Price,
with respect to any Mortgage Loan. Any amounts received by the Servicer with
respect a Mortgage Loan in excess of the Purchase Price shall be retained by the
Servicer as additional servicing compensation. The Trustee, upon receipt of
certification from the Servicer of the deposit of the Purchase Price in
connection with a

                                       43
<PAGE>

repurchase of a Mortgage Loan and a Request for Release from the Servicer, shall
release or cause to be released to the purchaser of such Mortgage Loan the
related Mortgage File and shall execute and deliver such instruments of transfer
or assignment prepared by the purchaser of such Mortgage Loan, in each case
without recourse, as shall be necessary to vest in the purchaser of such
Mortgage Loan any Mortgage Loan released pursuant hereto and the purchaser of
such Mortgage Loan shall succeed to all the Trustee's right, title and interest
in and to such Mortgage Loan and all security and documents related thereto.
Such assignment shall be an assignment outright and not for security. The
purchaser of such Mortgage Loan shall thereupon own such Mortgage Loan, and all
security and documents, free of any further obligation to the Trustee or the
Certificateholders with respect thereto.

     Section 2.04 Representations and Warranties of the Depositor as to the
Mortgage Loans.

     (a) The Depositor represents and warrants to the Trustee with respect to
each Mortgage Loan as of the date of this Agreement or such other date set forth
in this Agreement that as of the Closing Date, and following the transfer of the
Mortgage Loans to it by the Seller, the Depositor had good title to the Mortgage
Loans and the Mortgage Notes were subject to no offsets, defenses, or
counterclaims.

     (b) The representations and warranties in this Section 2.04 shall survive
delivery of the Mortgage Files to the Trustee. Upon discovery by the Depositor
or the Trustee of any breach of any of the representations and warranties in
this Section that materially and adversely affects the interest of the
Certificateholders, the party discovering the breach shall give prompt written
notice to the others and to each Rating Agency.

     Section 2.05 Delivery of Opinion of Counsel in Connection with
Substitutions.

     Notwithstanding any contrary provision of this Agreement, no substitution
pursuant to Section 2.02 or 2.03 shall be made more than 90 days after the
Closing Date unless the Seller delivers to the Trustee an Opinion of Counsel,
which Opinion of Counsel shall not be at the expense of either the Trustee or
the Trust Fund, addressed to the Trustee, to the effect that such substitution
will not (i) result in the imposition of the tax on "prohibited transactions" on
the Trust Fund or contributions after the Startup Date, as defined in sections
860F(a)(2) and 860G(d) of the Code, respectively or (ii) cause any REMIC created
under this Agreement to fail to qualify as a REMIC at any time that any
Certificates are outstanding.

     Upon discovery by the Depositor, the Seller, the Servicer or the Trustee
that any Mortgage Loan does not constitute a "qualified mortgage" within the
meaning of section 860G(a)(3) of the Code, the party discovering such fact shall
promptly (and in any event within five Business Days of discovery) give written
notice thereof to the other parties. In connection therewith, the Trustee shall
require the Seller, at the Seller's option, to either (i) substitute, if the
conditions in Section 2.03(c) with respect to substitutions are satisfied, a
Substitute Mortgage Loan for the affected Mortgage Loan, or (ii) repurchase the
affected Mortgage Loan within 90 days of such discovery in the same manner as it
would a Mortgage Loan for a breach of representation or warranty made pursuant
to Section 2.03. The Trustee shall reconvey to the Seller the Mortgage Loan to
be released pursuant hereto in the same manner, and on the same terms and
conditions, as it would a Mortgage Loan repurchased for breach of a
representation or warranty contained in Section 2.03.

     Section 2.06 Execution and Delivery of Certificates.

     The Trustee acknowledges the transfer and assignment to it of the Trust
Fund and, concurrently with such transfer and assignment, has executed and
delivered to or upon the order of the Depositor, the Certificates in authorized
denominations evidencing directly or indirectly the entire ownership of the

                                       44
<PAGE>

Trust Fund. The Trustee agrees to hold the Trust Fund and exercise the rights
referred to above for the benefit of all present and future Holders of the
Certificates.

     Section 2.07 REMIC Matters.

     The Preliminary Statement sets forth the designations and "latest possible
maturity date" for federal income tax purposes of all interests created under
this Agreement. The "Startup Day" for purposes of the REMIC Provisions shall be
the Closing Date. Each REMIC's fiscal year shall be the calendar year.

                                       45
<PAGE>

                                  ARTICLE THREE

                 ADMINISTRATION AND SERVICING OF MORTGAGE LOANS

     Section 3.01 Servicer to Service Mortgage Loans.

     For and on behalf of the Certificateholders, the Servicer shall service and
administer the Mortgage Loans in accordance with this Agreement and the
Servicing Standard.

     The Servicer shall not make or permit any modification, waiver, or
amendment of any term of any Mortgage Loan that would cause any REMIC created
under this Agreement to fail to qualify as a REMIC or result in the imposition
of any tax under section 860F(a) or section 860G(d) of the Code.

     Without limiting the generality of the foregoing, the Servicer, in its own
name or in the name of the Depositor and the Trustee, is hereby authorized and
empowered by the Depositor and the Trustee, when the Servicer believes it
appropriate in its reasonable judgment, to execute and deliver, on behalf of the
Trustee, the Depositor, the Certificateholders, or any of them, any instruments
of satisfaction or cancellation, or of partial or full release or discharge, and
all other comparable instruments, with respect to the Mortgage Loans, and with
respect to the Mortgaged Properties held for the benefit of the
Certificateholders. The Servicer shall prepare and deliver to the Depositor or
the Trustee any documents requiring execution and delivery by either or both of
them appropriate to enable the Servicer to service and administer the Mortgage
Loans to the extent that the Servicer is not permitted to execute and deliver
such documents pursuant to the preceding sentence. Upon receipt of the
documents, the Depositor or the Trustee shall execute the documents and deliver
them to the Servicer.

     The Servicer further is authorized and empowered by the Trustee, on behalf
of the Certificateholders and the Trustee, in its own name, when the Servicer
believes it appropriate in its best judgment to register any Mortgage Loan on
the MERS(R) System, or cause the removal from the registration of any Mortgage
Loan on the MERS(R) System, to execute and deliver, on behalf of the Trustee and
the Certificateholders or any of them, any and all instruments of assignment and
other comparable instruments with respect to such assignment or re-recording of
a Mortgage in the name of MERS, solely as nominee for the Trustee and its
successors and assigns.

     In accordance with and to the extent of the Servicing Standard, the
Servicer shall advance funds necessary to effect the payment of taxes and
assessments on the Mortgaged Properties, which advances shall be reimbursable in
the first instance from related collections from the Mortgagors pursuant to
Section 3.07, and further as provided in Section 3.09. The costs incurred by the
Servicer in effecting the timely payments of taxes and assessments on the
Mortgaged Properties and related insurance premiums shall not, for the purpose
of calculating monthly distributions to the Certificateholders, be added to the
Stated Principal Balances of the related Mortgage Loans, notwithstanding that
the Mortgage Loans so permit.

     Nothing in this Agreement to the contrary shall limit the Servicer from
undertaking any legal action that it may deem appropriate with respect to the
Mortgage Loans including, without limitation, any rights or causes of action
arising out of the origination of the Mortgage Loans.

                                       46
<PAGE>

     Section 3.02 [Reserved].

     Section 3.03 Rights of the Depositor and the Trustee in Respect of the
Servicer.

     The Depositor may, but is not obligated to, enforce the obligations of the
Servicer under this Agreement and may, but is not obligated to, perform, or
cause a designee to perform, any defaulted obligation of the Servicer under this
Agreement and in connection with any such defaulted obligation to exercise the
related rights of the Servicer under this Agreement; provided that the Servicer
shall not be relieved of any of its obligations under this Agreement by virtue
of such performance by the Depositor or its designee. Neither the Trustee nor
the Depositor shall have any responsibility or liability for any action or
failure to act by the Servicer nor shall the Trustee or the Depositor be
obligated to supervise the performance of the Servicer under this Agreement or
otherwise.

     Section 3.04 [Reserved].

     Section 3.05 Trustee to Act as Servicer.

     If the Servicer for any reason is no longer the Servicer under this
Agreement (including because of the occurrence or existence of an Event of
Default or termination by the Depositor), the Trustee or its successor shall
assume all of the rights and obligations of the Servicer under this Agreement
arising thereafter (except that the Trustee shall not be

          (i) liable for losses of the Servicer pursuant to Section 3.10 or any
     acts or omissions of the predecessor Servicer hereunder,

          (ii) obligated to make Advances if it is prohibited from doing so by
     applicable law,

          (iii) obligated to effectuate repurchases or substitutions of Mortgage
     Loans hereunder, including repurchases or substitutions pursuant to Section
     2.02 or 2.03,

          (iv) responsible for expenses of the Servicer pursuant to Section
     2.03, or

          (v) deemed to have made any representations and warranties of the
     Servicer hereunder). Any assumption shall be subject to Section 7.02.

     Notwithstanding anything else in this Agreement to the contrary, in no
event shall the Trustee be liable for any servicing fee or for any differential
in the amount of the Servicing Fee paid under this Agreement and the amount
necessary to induce any successor Servicer to act as successor Servicer under
this Agreement and the transactions provided for in this Agreement.

     Section 3.06 Collection of Mortgage Loan Payments; Certificate Account;
Distribution Account.

     (a) In accordance with and to the extent of the Servicing Standard, the
Servicer shall make reasonable efforts in accordance with the customary and
usual standards of practice of prudent mortgage servicers to collect all
payments called for under the Mortgage Loans to the extent the procedures are
consistent with this Agreement and any related Required Insurance Policy.
Consistent with the foregoing, the Servicer may in its discretion (i) subject to
Section 3.21, waive any Late Payment Fee or, to the extent provided in Section
3.20, waive any Prepayment Charge in connection with the prepayment of a
Mortgage Loan and (ii) extend the due dates for payments due on a Delinquent
Mortgage Loan for a period not greater than 125 days. In connection with a
seriously delinquent or defaulted Mortgage Loan,

                                       47
<PAGE>

the Servicer may, consistent with the Servicing Standard, waive, modify or vary
any term of that Mortgage Loan (including modifications that change the Mortgage
Rate, forgive the payment of principal or interest or extend the final maturity
date of that Mortgage Loan ), accept payment from the related Mortgagor of an
amount less than the Stated Principal Balance in final satisfaction of that
Mortgage Loan, or consent to the postponement of strict compliance with any such
term or otherwise grant indulgence to any Mortgagor if in the Servicer's
determination such waiver, modification, postponement or indulgence is not
materially adverse to the interests of the Certificateholders (taking into
account any estimated loss that might result absent such action) and is expected
to minimize the loss on such Mortgage Loan; provided, however, the Servicer
shall not initiate new lending to such Mortgagor through the Trust and cannot,
except as provided in the immediately succeeding sentence, extend the maturity
of any Mortgage Loan past the date on which the final payment is due on the
latest maturing Mortgage Loan as of the Cut-off Date. With respect to no more
than 5% of the Mortgage Loans (measured by aggregate Cut-off Date Principal
Balance of the Mortgage Loans), the Servicer may extend the maturity of a
Mortgage Loan past the date on which the final payment is due on the latest
maturing Mortgage Loan as of the Cut-off Date, but in no event more than one
year past such date. In the event of any such arrangement, the Servicer shall
make Advances on the related Mortgage Loan in accordance with Section 4.01
during the scheduled period in accordance with the amortization schedule of the
Mortgage Loan without modification thereof because of the arrangements. The
Servicer shall not be required to institute or join in litigation with respect
to collection of any payment (whether under a Mortgage, Mortgage Note, or
otherwise or against any public or governmental authority with respect to a
taking or condemnation) if it reasonably believes that enforcing the provision
of the Mortgage or other instrument pursuant to which the payment is required is
prohibited by applicable law. The Servicer shall not have the discretion to sell
any Delinquent or defaulted Mortgage Loan.

     (b) [Reserved].

     (c) [Reserved].

     (d) The Servicer shall establish and maintain a Certificate Account into
which the Servicer shall deposit within two Business Days of receipt or as
otherwise specified in this Agreement, the following payments and collections
received by it in respect of Mortgage Loans after the Cut-off Date (other than
in respect of principal and interest due on the Mortgage Loans by the Cut-off
Date) and the following amounts required to be deposited hereunder:

          (i) all payments on account of principal on the Mortgage Loans,
     including Principal Prepayments;

          (ii) all payments on account of interest on the Mortgage Loans, net of
     the Prepayment Interest Excess and the Servicing Fee;

          (iii) all Insurance Proceeds, Subsequent Recoveries and Liquidation
     Proceeds, other than proceeds to be applied to the restoration or repair of
     the Mortgaged Property or released to the Mortgagor in accordance with the
     Servicer's normal servicing procedures;

          (iv) any amount required to be deposited by the Servicer pursuant to
     Section 3.06(f) in connection with any losses on Permitted Investments;

          (v) any amounts required to be deposited by the Servicer pursuant to
     Sections 3.10 and 3.12;

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<PAGE>

          (vi) all Purchase Prices from the Servicer or Seller and all
     Substitution Adjustment Amounts;

          (vii) all Advances made by the Servicer pursuant to Section 4.01;

          (viii) any other amounts required to be deposited under this
     Agreement; and

          (ix) all Prepayment Charges collected and amounts payable by the
     Servicer for the waiver of such amounts.

     In addition, with respect to any Mortgage Loan that is subject to a buydown
agreement, on each Due Date for the Mortgage Loan, in addition to the monthly
payment remitted by the Mortgagor, the Servicer shall cause funds to be
deposited into the Certificate Account in an amount required to cause an amount
of interest to be paid with respect to the Mortgage Loan equal to the amount of
interest that has accrued on the Mortgage Loan from the preceding Due Date at
the Mortgage Rate net of the Servicing Fee Rate on that date.

     The foregoing requirements for remittance by the Servicer to the
Certificate Account shall be exclusive, it being understood and agreed that,
without limiting the generality of the foregoing, payments in the nature of
assumption fees, if collected, need not be remitted by the Servicer. If the
Servicer remits any amount not required to be remitted, it may at any time
withdraw that amount from the Certificate Account, any provision in this
Agreement to the contrary notwithstanding. The withdrawal or direction may be
accomplished by delivering written notice of it to the Trustee or any other
institution maintaining the Certificate Account that describes the amounts
deposited in error in the Certificate Account. The Servicer shall maintain
adequate records with respect to all withdrawals made pursuant to this Section
3.06. All funds deposited in the Certificate Account shall be held in trust for
the Certificateholders until withdrawn in accordance with Section 3.09.

     (e) The Trustee shall establish and maintain the Distribution Account on
behalf of the Certificateholders. The Trustee shall, promptly upon receipt,
deposit in the Distribution Account and retain in the Distribution Account the
following:

          (i) the aggregate amount remitted by the Servicer to the Trustee
     pursuant to Section 3.09(a);

          (ii) any amount deposited by the Servicer pursuant to Section 3.06(f)
     in connection with any losses on Permitted Investments; and

          (iii) any other amounts deposited under this Agreement that are
     required to be deposited in the Distribution Account.

     If the Servicer remits any amount not required to be remitted, it may at
any time direct the Trustee in writing to withdraw that amount from the
Distribution Account, any provision in this Agreement to the contrary
notwithstanding. The direction may be accomplished by delivering an Officer's
Certificate to the Trustee that describes the amounts deposited in error in the
Distribution Account. All funds deposited in the Distribution Account shall be
held by the Trustee in trust for the Certificateholders until disbursed in
accordance with this Agreement or withdrawn in accordance with Section 3.09. In
no event shall the Trustee incur liability for withdrawals from the Distribution
Account at the direction of the Servicer.

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<PAGE>

     (f) Each institution at which the Certificate Account is maintained shall
invest the funds in such account as directed in writing by the Servicer in
Permitted Investments, which shall mature not later than the second Business Day
preceding the related Distribution Account Deposit Date (except that if the
Permitted Investment is an obligation of the institution that maintains the
account, then the Permitted Investment shall mature not later than the Business
Day preceding the Distribution Account Deposit Date) and which shall not be sold
or disposed of before its maturity. The funds in the Distribution Account shall
remain uninvested. All such Permitted Investments shall be made in the name of
the Trustee, for the benefit of the Certificateholders. All income realized from
any such investment of funds on deposit in the Certificate Account shall be for
the benefit of the Servicer as servicing compensation and shall be remitted to
it monthly as provided in this Agreement. The amount of any realized losses on
Permitted Investments in the Certificate Account shall promptly be deposited by
the Servicer in the Certificate Account. The Trustee shall not be liable for the
amount of any loss incurred in respect of any investment or lack of investment
of funds held in the Certificate Account and made in accordance with this
Section 3.06.

     (g) [reserved].

     (h) [reserved].

     (i) The Servicer shall give notice to the Trustee, the Seller, each Rating
Agency and the Depositor of any proposed change of the location of the
Certificate Account not later than 30 days and not more than 45 days prior to
any change of this Agreement. The Trustee shall give notice to the Servicer, the
Seller, each Rating Agency and the Depositor of any proposed change of the
location of the Distribution Account not later than 30 days and not more than 45
days prior to any change of this Agreement.

     (j) Upon a downgrade in the rating of an institution at which an Eligible
Account is held below the required ratings set forth in the definition of
Eligible Account, within 30 days of such downgrade, such account will be
transferred to an account meeting the requirements of the definition of Eligible
Account; provided, however, that this transfer requirement may be waived by the
applicable Rating Agency.

     Section 3.07 Collection of Taxes, Assessments and Similar Items; Escrow
Accounts.

     (a) To the extent required by the related Mortgage Note and not violative
of current law, the Servicer shall establish and maintain one or more accounts
(each, an "Escrow Account") and deposit and retain therein all collections from
the Mortgagors (or advances) for the payment of taxes, assessments, hazard
insurance premiums or comparable items for the account of the Mortgagors.
Nothing herein shall require the Servicer to compel a Mortgagor to establish an
Escrow Account in violation of applicable law.

     (b) Withdrawals of amounts so collected from the Escrow Accounts may be
made only to effect timely payment of taxes, assessments, hazard insurance
premiums, condominium or PUD association dues, or comparable items, to reimburse
(without duplication) the Servicer out of related collections for any payments
made pursuant to Section 3.01 (with respect to taxes and assessments and
insurance premiums) and Section 3.10 (with respect to hazard insurance), to
refund to any Mortgagors any sums determined to be overages, to pay interest, if
required by law or the related Mortgage or Mortgage Note, to Mortgagors on
balances in the Escrow Account or to clear and terminate the Escrow Account at
the termination of this Agreement in accordance with Section 9.01. The Escrow
Accounts shall not be a part of the Trust Fund.

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<PAGE>

     (c) The Servicer shall advance any payments referred to in Section 3.07(a)
that are not timely paid by the Mortgagors or advanced by the Servicer on the
date when the tax, premium or other cost for which such payment is intended is
due, but the Servicer shall be required so to advance only to the extent that
such advances, in the good faith judgment of the Servicer, will be recoverable
by the Servicer out of Insurance Proceeds, Liquidation Proceeds or otherwise.

     Section 3.08 Access to Certain Documentation and Information Regarding the
Mortgage Loans.

     The Servicer shall afford the Depositor and the Trustee reasonable access
to all records and documentation regarding the Mortgage Loans and all accounts,
insurance information and other matters relating to this Agreement, such access
being afforded without charge, but only upon reasonable request and during
normal business hours at the office designated by the Servicer.

     Upon reasonable advance notice in writing, the Servicer will provide to
each Certificateholder or Certificate Owner that is a savings and loan
association, bank, or insurance company certain reports and reasonable access to
information and documentation regarding the Mortgage Loans sufficient to permit
the Certificateholder or Certificate Owner to comply with applicable regulations
of the OTS or other regulatory authorities with respect to investment in the
Certificates. The Servicer shall be entitled to be reimbursed by each such
Certificateholder or Certificate Owner for actual expenses incurred by the
Servicer in providing the reports and access.

     Section 3.09 Permitted Withdrawals from the Certificate Account and the
Distribution Account.

     (a) The Servicer may (and, in the case of clause (ix) below, shall) from
time to time make withdrawals from the Certificate Account for the following
purposes:

          (i) to pay to the Servicer (to the extent not previously retained) the
     servicing compensation to which it is entitled pursuant to Section 3.15,
     and to pay to the Servicer, as additional servicing compensation, earnings
     on or investment income with respect to funds in or credited to the
     Certificate Account;

          (ii) to reimburse the Servicer or successor Servicer for the
     unreimbursed Advances made by it, such right of reimbursement pursuant to
     this subclause (ii) being limited to amounts received on the Mortgage Loans
     in respect of which the Advance was made;

          (iii) to reimburse the Servicer or successor Servicer for any
     Nonrecoverable Advance previously made by it;

          (iv) to reimburse the Servicer for Insured Expenses from the related
     Insurance Proceeds;

          (v) to reimburse the Servicer for (a) unreimbursed Servicing Advances,
     the Servicer's right to reimbursement pursuant to this clause (a) with
     respect to any Mortgage Loan being limited to amounts received on the
     Mortgage Loans that represent late recoveries of the payments for which the
     advances were made pursuant to Section 3.01 or Section 3.07, (b)
     unreimbursed Servicing Advances made in respect of a Mortgage Loan for
     which such Servicing Advances are not recoverable from the Mortgagor and
     (c) for unpaid Servicing Fees as provided in Section 3.12;

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<PAGE>

          (vi) to pay to the purchaser, with respect to each Mortgage Loan or
     property acquired in respect of such Mortgage Loan that has been purchased
     pursuant to Section 2.02, 2.03, or 3.12, all amounts received thereon after
     the date of such purchase;

          (vii) to reimburse the Seller, the Servicer, or the Depositor for
     expenses incurred by any of them and reimbursable pursuant to Section 6.03;

          (viii) to withdraw any amount deposited in the Certificate Account and
     not required to be deposited in the Certificate Account;

          (ix) by the Distribution Account Deposit Date, to withdraw (1) the
     Available Funds and Trustee Fee for the Distribution Date, to the extent on
     deposit, (2) the Prepayment Charges on deposit and (3) the $100 held in
     trust for the Class P Certificates, and remit such amount to the Trustee
     for deposit in the Distribution Account; and

          (x) to clear and terminate the Certificate Account upon termination of
     this Agreement pursuant to Section 9.01.

     The Servicer shall keep and maintain separate accounting, on a Mortgage
Loan by Mortgage Loan basis, to justify any withdrawal from the Certificate
Account pursuant to subclauses (i), (ii), (iv), (v), and (vi). Before making any
withdrawal from the Certificate Account pursuant to subclause (iii), the
Servicer shall deliver to the Trustee an Officer's Certificate of a Servicing
Officer indicating the amount of any previous Advance determined by the Servicer
to be a Nonrecoverable Advance and identifying the related Mortgage Loans and
their respective portions of the Nonrecoverable Advance.

     In addition to the amounts remitted to the Trustee by the Servicer from the
Certificate Account, by the Distribution Account Deposit Date, the Servicer
shall remit all Late Payment Fees assessable and not waived pursuant to Section
3.21(a) to the Trustee for deposit into the Distribution Account.

     (b) The Trustee shall withdraw funds from the Distribution Account for
distributions to Certificateholders in the manner specified in this Agreement
(and to withhold from the amounts so withdrawn the amount of any taxes that it
is authorized to withhold pursuant to the third paragraph of Section 8.11). In
addition, the Trustee may from time to time make withdrawals from the
Distribution Account for the following purposes:

          (i) to pay to itself the Trustee Fee for the related Distribution
     Date;

          (ii) to withdraw and return to the Servicer any amount deposited in
     the Distribution Account and not required to be deposited therein; and

          (iii) to clear and terminate the Distribution Account upon termination
     of the Agreement pursuant to Section 9.01.

     Section 3.10 Maintenance of Hazard Insurance; Maintenance of Primary
Insurance Policies.

     (a) The Servicer shall maintain, for each Mortgage Loan, hazard insurance
with extended coverage in an amount that is at least equal to the lesser of

     (i) the maximum insurable value of the improvements securing the Mortgage
Loan and

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<PAGE>

     (ii) the greater of (y) the outstanding principal balance of the Mortgage
Loan and (z) an amount such that the proceeds of the policy are sufficient to
prevent the Mortgagor or the mortgagee from becoming a co-insurer.

     Each policy of standard hazard insurance shall contain, or have an
accompanying endorsement that contains, a standard mortgagee clause. Any amounts
collected under the policies (other than the amounts to be applied to the
restoration or repair of the related Mortgaged Property or amounts released to
the Mortgagor in accordance with the Servicer's normal servicing procedures)
shall be deposited in the Certificate Account. Any cost incurred in maintaining
any insurance shall not, for the purpose of calculating monthly distributions to
the Certificateholders or remittances to the Trustee for their benefit, be added
to the principal balance of the Mortgage Loan, notwithstanding that the Mortgage
Loan so permits. Such costs shall be recoverable by the Servicer out of late
payments (other than Late Payment Fees) by the related Mortgagor or out of
Liquidation Proceeds to the extent permitted by Section 3.09. No earthquake or
other additional insurance is to be required of any Mortgagor or maintained on
property acquired in respect of a Mortgage other than pursuant to any applicable
laws and regulations in force that require additional insurance. If the
Mortgaged Property is located at the time of origination of the Mortgage Loan in
a federally designated special flood hazard area and the area is participating
in the national flood insurance program, the Servicer shall maintain flood
insurance for the Mortgage Loan. The flood insurance shall be in an amount equal
to the least of (i) the original principal balance of the related Mortgage Loan,
(ii) the replacement value of the improvements that are part of the Mortgaged
Property, and (iii) the maximum amount of flood insurance available for the
related Mortgaged Property under the national flood insurance program.

     If the Servicer obtains and maintains a blanket policy insuring against
hazard losses on all of the Mortgage Loans, it shall have satisfied its
obligations in the first sentence of this Section 3.10. The policy may contain a
deductible clause on terms substantially equivalent to those commercially
available and maintained by comparable servicers. If the policy contains a
deductible clause and a policy complying with the first sentence of this Section
3.10 has not been maintained on the related Mortgaged Property, and if a loss
that would have been covered by the required policy occurs, the Servicer shall
deposit in the Certificate Account, without any right of reimbursement, the
amount not otherwise payable under the blanket policy because of the deductible
clause. In connection with its activities as Servicer of the Mortgage Loans, the
Servicer agrees to present, on behalf of itself, the Depositor, and the Trustee
for the benefit of the Certificateholders, claims under any blanket policy.

     (b) The Servicer shall not take any action that would result in
non-coverage under any applicable Primary Insurance Policy of any loss that, but
for the actions of the Servicer, would have been covered thereunder. The
Servicer shall not cancel or refuse to renew any Primary Insurance Policy that
is in effect at the date of the initial issuance of the Certificates and is
required to be kept in force hereunder unless the replacement Primary Insurance
Policy for the canceled or non-renewed policy is maintained with a Qualified
Insurer. The Servicer need not maintain any Primary Insurance Policy if
maintaining the Primary Insurance Policy is prohibited by applicable law. The
Servicer agrees, to the extent permitted by applicable law, to effect the timely
payment of the premiums on each Primary Insurance Policy, and any costs not
otherwise recoverable shall be recoverable by the Servicer from the related
liquidation proceeds.

     In connection with its activities as Servicer of the Mortgage Loans, the
Servicer agrees to present, on behalf of itself, the Trustee and the
Certificateholders, claims to the insurer under any Primary Insurance Policies
and, in this regard, to take any reasonable action in accordance with the
Servicing Standard necessary to permit recovery under any Primary Insurance
Policies respecting defaulted Mortgage Loans. Any amounts collected by the
Servicer under any Primary Insurance Policies shall be deposited in the
Certificate Account.

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<PAGE>

     Section 3.11 Enforcement of Due-On-Sale Clauses; Assumption Agreements.

     (a) Except as otherwise provided in this Section 3.11, when any property
subject to a Mortgage has been conveyed by the Mortgagor, the Servicer shall to
the extent that it has knowledge of the conveyance and in accordance with the
Servicing Standard, enforce any due-on-sale clause contained in any Mortgage
Note or Mortgage, to the extent permitted under applicable law and governmental
regulations, but only to the extent that enforcement will not adversely affect
or jeopardize coverage under any Required Insurance Policy. Notwithstanding the
foregoing, the Servicer is not required to exercise these rights with respect to
a Mortgage Loan if the Person to whom the related Mortgaged Property has been
conveyed or is proposed to be conveyed satisfies the conditions contained in the
Mortgage Note and Mortgage related thereto and the consent of the mortgagee
under the Mortgage Note or Mortgage is not otherwise so required under the
Mortgage Note or Mortgage as a condition to the transfer.

     If (i) the Servicer is prohibited by law from enforcing any due-on-sale
clause, (ii) coverage under any Required Insurance Policy would be adversely
affected, (iii) the Mortgage Note does not include a due-on-sale clause, or (iv)
nonenforcement is otherwise permitted hereunder, the Servicer is authorized,
subject to Section 3.11(b), to take or enter into an assumption and modification
agreement from or with the person to whom the property has been or is about to
be conveyed, pursuant to which the person becomes liable under the Mortgage Note
and, unless prohibited by applicable state law, the Mortgagor remains liable
thereon. The Mortgage Loan must continue to be covered (if so covered before the
Servicer enters into the agreement) by the applicable Required Insurance
Policies.

     The Servicer, subject to Section 3.11(b), is also authorized with the prior
approval of the insurers under any Required Insurance Policies to enter into a
substitution of liability agreement with the Person, pursuant to which the
original Mortgagor is released from liability and the Person is substituted as
Mortgagor and becomes liable under the Mortgage Note. Notwithstanding the
foregoing, the Servicer shall not be deemed to be in default under this Section
3.11 because of any transfer or assumption that the Servicer reasonably believes
it is restricted by law from preventing, for any reason whatsoever.

     (b) Subject to the Servicer's duty to enforce any due-on-sale clause to the
extent set forth in Section 3.11(a), in any case in which a Mortgaged Property
has been conveyed to a Person by a Mortgagor, and the Person is to enter into an
assumption agreement or modification agreement or supplement to the Mortgage
Note or Mortgage that requires the signature of the Trustee, or if an instrument
of release signed by the Trustee is required releasing the Mortgagor from
liability on the Mortgage Loan, the Servicer shall prepare and deliver to the
Trustee for signature and shall direct the Trustee, in writing, to execute the
assumption agreement with the Person to whom the Mortgaged Property is to be
conveyed, and the modification agreement or supplement to the Mortgage Note or
Mortgage or other instruments appropriate to carry out the terms of the Mortgage
Note or Mortgage or otherwise to comply with any applicable laws regarding
assumptions or the transfer of the Mortgaged Property to the Person. In
connection with any such assumption, no material term of the Mortgage Note may
be changed.

     In addition, the substitute Mortgagor and the Mortgaged Property must be
acceptable to the Servicer in accordance with its underwriting standards as then
in effect. Together with each substitution, assumption, or other agreement or
instrument delivered to the Trustee for execution by it, the Servicer shall
deliver an Officer's Certificate signed by a Servicing Officer stating that the
requirements of this subsection have been met in connection with such Officer's
Certificate. The Servicer shall notify the Trustee that any substitution or
assumption agreement has been completed by forwarding to the Trustee the
original of the substitution or assumption agreement, which in the case of the
original shall be added to the related Mortgage File and shall, for all
purposes, be considered a part of the Mortgage File to the same extent as all
other documents and instruments constituting a part of the Mortgage File. The
Servicer

                                       54
<PAGE>

will retain any fee collected by it for entering into an assumption or
substitution of liability agreement as additional servicing compensation.

     Section 3.12 Realization Upon Defaulted Mortgage Loans.

     The Servicer shall use reasonable efforts in accordance with the Servicing
Standard to foreclose on or otherwise comparably convert the ownership of assets
securing such of the Mortgage Loans as come into and continue in default and as
to which no satisfactory arrangements can be made for collection of delinquent
payments. In connection with the foreclosure or other conversion, the Servicer
shall follow the Servicing Standard and shall follow the requirements of the
insurer under any Required Insurance Policy. The Servicer shall not be required
to expend its own funds in connection with any foreclosure or towards the
restoration of any property unless it determines (i) that the restoration or
foreclosure will increase the proceeds of liquidation of the Mortgage Loan after
reimbursement to itself of restoration expenses and (ii) that restoration
expenses will be recoverable to it through Liquidation Proceeds (respecting
which it shall have priority for purposes of withdrawals from the Certificate
Account). The Servicer shall be responsible for all other costs and expenses
incurred by it in any foreclosure proceedings. The Servicer is entitled to
reimbursement of such costs and expenses from the liquidation proceeds with
respect to the related Mortgaged Property, as provided in the definition of
Liquidation Proceeds. If the Servicer has knowledge that a Mortgaged Property
that the Servicer is contemplating acquiring in foreclosure or by deed in lieu
of foreclosure is located within a one mile radius of any site listed in the
Expenditure Plan for the Hazardous Substance Clean Up Bond Act of 1984 or other
site with environmental or hazardous waste risks known to the Servicer, the
Servicer will, before acquiring the Mortgaged Property, consider the risks and
only take action in accordance with its established environmental review
procedures.

     With respect to any REO Property, the deed or certificate of sale shall be
taken in the name of the Trustee for the benefit of the Certificateholders, or
its nominee, on behalf of the Certificateholders. The Trustee's name shall be
placed on the title to the REO Property solely as the Trustee hereunder and not
in its individual capacity. The Servicer shall ensure that the title to the REO
Property references the Pooling and Servicing Agreement and the Trustee's
capacity hereunder. Pursuant to its efforts to sell the REO Property, the
Servicer shall either itself or through an agent selected by the Servicer
protect and conserve the REO Property in accordance with the Servicing Standard.

     The Servicer shall perform the tax reporting and withholding required by
sections 1445 and 6050J of the Code with respect to foreclosures and
abandonments, the tax reporting required by section 6050H of the Code with
respect to the receipt of mortgage interest from individuals and, if required by
section 6050P of the Code with respect to the cancellation of indebtedness by
certain financial entities, by preparing any required tax and information
returns, in the form required.

     If the Trust Fund acquires any Mortgaged Property as aforesaid or otherwise
in connection with a default or imminent default on a Mortgage Loan, the REO
Property shall only be held temporarily, shall be actively marketed for sale,
and the Servicer shall dispose of the Mortgaged Property as soon as practicable,
and in any case before the end of the third calendar year following the calendar
year in which the Trust Fund acquires the property. Notwithstanding any other
provision of this Agreement, no Mortgaged Property acquired by the Trust Fund
shall be rented (or allowed to continue to be rented) or otherwise used for the
production of income by or on behalf of the Trust Fund.

     The decision of the Servicer to foreclose on a defaulted Mortgage Loan
shall be subject to a determination by the Servicer that the proceeds of the
foreclosure would exceed the costs and expenses of bringing a foreclosure
proceeding. The proceeds received from the maintenance of any REO Properties,
net of reimbursement to the Servicer for costs incurred (including any property
or other taxes) in

                                       55
<PAGE>

connection with maintenance of the REO Properties and net of unreimbursed
Servicing Fees, Advances, and Servicing Advances, shall be applied to the
payment of principal of and interest on the related defaulted Mortgage Loans
(with interest accruing as though the Mortgage Loans were still current and
adjustments, if applicable, to the Mortgage Rate were being made in accordance
with the Mortgage Note) and all such proceeds shall be deemed, for all purposes
in this Agreement, to be payments on account of principal and interest on the
related Mortgage Notes and shall be deposited into the Certificate Account. To
the extent the net proceeds received during any calendar month exceeds the
amount attributable to amortizing principal and accrued interest at the related
Mortgage Rate on the related Mortgage Loan for the calendar month, the excess
shall be considered to be a partial prepayment of principal of the related
Mortgage Loan.

     The proceeds from any liquidation of a Mortgage Loan, as well as any
proceeds from an REO Property, will be applied in the following order of
priority: first, to reimburse the Servicer for any related unreimbursed
Servicing Advances or Servicing Fees or for any related unreimbursed Advances,
as applicable; second, to reimburse the Servicer, as applicable, and to
reimburse the Certificate Account for any Nonrecoverable Advances (or portions
thereof) that were previously withdrawn by the Servicer pursuant to Section
3.09(a)(iii) that related to the Mortgage Loan; third, to accrued and unpaid
interest (to the extent no Advance has been made for such amount or any such
Advance has been reimbursed) on the Mortgage Loan or related REO Property, at
the Adjusted Net Mortgage Rate to the Due Date occurring in the month in which
such amounts are required to be distributed; and fourth, as a recovery of
principal of the Mortgage Loan. The Servicer will retain any Excess Proceeds
from the liquidation of a Liquidated Mortgage Loan as additional servicing
compensation pursuant to Section 3.15.

     The Servicer may agree to a modification of any Mortgage Loan at the
request of the related Mortgagor if (i) the modification is in lieu of a
refinancing and (ii) the Servicer purchases that Mortgage Loan from the Trust
Fund as described below. Upon the agreement of the Servicer to modify a Mortgage
Loan in accordance with the preceding sentence, the Servicer shall purchase that
Mortgage Loan and all interest of the Trustee in that Mortgage Loan shall
automatically be deemed transferred and assigned to the Servicer and all
benefits and burdens of ownership thereof, including the right to accrued
interest thereon from the date of purchase and the risk of default thereon,
shall pass to the Servicer. The Servicer shall promptly deliver to the Trustee a
certification of a Servicing Officer to the effect that all requirements of this
paragraph have been satisfied with respect to a Mortgage Loan to be repurchased
pursuant to this paragraph.

     The Servicer shall deposit the Purchase Price for any Mortgage Loan
repurchased pursuant to Section 3.12 in the Certificate Account pursuant to
Section 3.06 within one Business Day after the purchase of the Mortgage Loan.
Upon receipt by the Trustee of written notification of any such deposit signed
by a Servicing Officer, the Trustee shall release to the Servicer the related
Mortgage File and shall execute and deliver such instruments of transfer or
assignment, in each case without recourse, as shall be necessary to vest in the
Servicer any Mortgage Loan previously transferred and assigned pursuant hereto.
The Servicer covenants and agrees to indemnify the Trust Fund against any
liability for any "prohibited transaction" taxes and any related interest,
additions, and penalties imposed on the Trust Fund established hereunder as a
result of any modification of a Mortgage Loan effected pursuant to this Section,
or any purchase of a Mortgage Loan by the Servicer in connection with a
modification (but such obligation shall not prevent the Servicer or any other
appropriate Person from contesting any such tax in appropriate proceedings and
shall not prevent the Servicer from withholding payment of such tax, if
permitted by law, pending the outcome of such proceedings). The Servicer shall
have no right of reimbursement for any amount paid pursuant to the foregoing
indemnification, except to the extent that the amount of any tax, interest, and
penalties, together with interest thereon, is refunded to the Trust Fund.

                                       56
<PAGE>

     Section 3.13 Trustee to Cooperate; Release of Mortgage Files.

     Upon the payment in full of any Mortgage Loan, or the receipt by the
Servicer of a notification that payment in full will be escrowed in a manner
customary for such purposes, the Servicer will immediately notify the Trustee by
delivering a Request for Release substantially in the form of Exhibit N. Upon
receipt of the request, the Trustee shall promptly release the related Mortgage
File to the Servicer, and the Trustee shall at the Servicer's direction execute
and deliver to the Servicer the request for reconveyance, deed of reconveyance,
or release or satisfaction of mortgage or such instrument releasing the lien of
the Mortgage in each case provided by the Servicer, together with the Mortgage
Note with written evidence of cancellation thereon. The Servicer is authorized
to cause the removal from the registration on the MERS System of such Mortgage
and to execute and deliver, on behalf of the Trustee and the Certificateholders
or any of them, any and all instruments of satisfaction or cancellation or of
partial or full release. Expenses incurred in connection with any instrument of
satisfaction or deed of reconveyance shall be chargeable to the related
Mortgagor.

     From time to time and as shall be appropriate for the servicing or
foreclosure of any Mortgage Loan, including for such purpose collection under
any policy of flood insurance, any fidelity bond or errors or omissions policy,
or for the purposes of effecting a partial release of any Mortgaged Property
from the lien of the Mortgage or the making of any corrections to the Mortgage
Note or the Mortgage or any of the other documents included in the Mortgage
File, the Trustee shall, upon delivery to the Trustee of a Request for Release
in the form of Exhibit M signed by a Servicing Officer, release the Mortgage
File to the Servicer or its designee. Subject to the further limitations set
forth below, the Servicer shall cause the Mortgage File or documents so released
to be returned to the Trustee when the need therefor by the Servicer no longer
exists, unless the Mortgage Loan is liquidated and the proceeds thereof are
deposited in the Certificate Account, in which case the Servicer shall deliver
to the Trustee a Request for Release in the form of Exhibit N, signed by a
Servicing Officer.

     If the Servicer at any time seeks to initiate a foreclosure proceeding in
respect of any Mortgaged Property as authorized by this Agreement, the Servicer
shall deliver to the Trustee, for signature, as appropriate, any court
pleadings, requests for trustee's sale, or other documents necessary to
effectuate such foreclosure or any legal action brought to obtain judgment
against the Mortgagor on the Mortgage Note or the Mortgage or to obtain a
deficiency judgment or to enforce any other remedies or rights provided by the
Mortgage Note or the Mortgage or otherwise available at law or in equity.

     Section 3.14 Documents, Records and Funds in Possession of the Servicer to
be Held for the Trustee.

     The Servicer shall account fully to the Trustee for any funds it receives
or otherwise collects as Liquidation Proceeds or Insurance Proceeds in respect
of any Mortgage Loan. All Mortgage Files and funds collected or held by, or
under the control of, the Servicer in respect of any Mortgage Loans, whether
from the collection of principal and interest payments or from Liquidation
Proceeds, including any funds on deposit in the Certificate Account, shall be
held by the Servicer for and on behalf of the Trustee and shall be and remain
the sole and exclusive property of the Trustee, subject to the applicable
provisions of this Agreement. The Servicer also agrees that it shall not create,
incur or subject any Mortgage File or any funds that are deposited in the
Certificate Account, Distribution Account, or any Escrow Account, or any funds
that otherwise are or may become due or payable to the Trustee for the benefit
of the Certificateholders, to any claim, lien, security interest, judgment,
levy, writ of attachment, or other encumbrance, or assert by legal action or
otherwise any claim or right of setoff against any Mortgage File or any funds
collected on, or in connection with, a Mortgage Loan, except, however, that the
Servicer shall be entitled to set off against and deduct from any such funds any
amounts that are properly due and payable to the Servicer under this Agreement.

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     Section 3.15 Servicing Compensation.

     The Servicer may retain or withdraw from the Certificate Account the
Servicing Fee for each Mortgage Loan for the related Distribution Date. If the
Servicer directly services a Mortgage Loan, the Servicer may retain the
Servicing Fee for its own account as compensation for performing services.
Notwithstanding the foregoing, the Servicing Fee payable to the Servicer shall
be reduced by the lesser of the aggregate of the Prepayment Interest Shortfalls
with respect to the Distribution Date and the aggregate Compensating Interest
for the Distribution Date.

     Additional servicing compensation in the form of Excess Proceeds,
Prepayment Interest Excess, assumption fees and all income net of any losses
realized from Permitted Investments shall be retained by the Servicer to the
extent not required to be deposited in the Certificate Account pursuant to
Section 3.06. The Servicer shall be required to pay all expenses incurred by it
in connection with its servicing activities hereunder (including the payment of
any premiums for hazard insurance, and any Primary Insurance Policy and
maintenance of the other forms of insurance coverage required by this Agreement)
and shall not be entitled to reimbursement therefor except as specifically
provided in this Agreement.

     Section 3.16 Access to Certain Documentation.

     The Servicer shall provide to the OTS and the FDIC and to comparable
regulatory authorities supervising Holders of Certificates and Certificate
Owners and the examiners and supervisory agents of the OTS, the FDIC, and such
other authorities, access to the documentation regarding the Mortgage Loans
required by applicable regulations of the OTS and the FDIC. Access shall be
afforded without charge, but only upon reasonable prior written request and
during normal business hours at the offices designated by the Servicer. Nothing
in this Section 3.16 shall limit the obligation of the Servicer to observe any
applicable law prohibiting disclosure of information regarding the Mortgagors
and the failure of the Servicer to provide access as provided in this Section
3.16 as a result of such obligation shall not constitute a breach of this
Section 3.16.

     Section 3.17 Annual Statement as to Compliance.

     (a) By March 15 of each year, commencing with 2008, the Servicer shall
deliver to the Trustee via electronic mail (DBSEC.Notifications@db.com) and the
Depositor an Officer's Certificate signed by two Servicing Officers stating, as
to each signer thereof, that (i) a review of the activities of the Servicer
during the preceding calendar year (or applicable portion thereof) and of the
performance of the Servicer under this Agreement has been made under such
officer's supervision, and (ii) to the best of such officer's knowledge, based
on the review, the Servicer has fulfilled all its obligations under this
Agreement, in all material respects throughout the year (or applicable portion
thereof), or, if there has been a failure to fulfill any obligation in any
material respect, specifying each failure known to the officer and the nature
and status thereof.

     (b) [Reserved].

     (c) Copies of such statement shall be provided by the Trustee to any
Certificateholder or Certificate Owner upon request at the Servicer's expense,
provided such statement is delivered by the Servicer to the Trustee.

     Section 3.18 Errors and Omissions Insurance; Fidelity Bonds.

     The Servicer shall obtain and maintain in force (a) policies of insurance
covering errors and omissions in the performance of its obligations as Servicer
hereunder and (b) a fidelity bond covering its

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officers, employees, and agents. Each policy and bond shall, together, comply
with the requirements from time to time of FNMA or FHLMC for persons performing
servicing for mortgage loans purchased by FNMA or FHLMC. If any policy or bond
ceases to be in effect, the Servicer shall obtain a comparable replacement
policy or bond from an insurer or issuer meeting the above requirements as of
the date of the replacement.

     Section 3.19 [Reserved].

     Section 3.20 Prepayment Charges.

     (a) The Servicer will not waive any part of any Prepayment Charge unless
the waiver relates to a default or a reasonably foreseeable default, the
Prepayment Charge would cause an undue hardship to the related borrower, the
Mortgaged Property is sold by the Mortgagor, the collection of any Prepayment
Charge would violate any relevant law or regulation or the waiving of the
Prepayment Charge would otherwise benefit the Trust Fund and it is expected that
the waiver would maximize recovery of total proceeds taking into account the
value of the Prepayment Charge and related Mortgage Loan and doing so is
standard and customary in servicing similar Mortgage Loans (including any waiver
of a Prepayment Charge in connection with a refinancing of a Mortgage Loan that
is related to a default or a reasonably foreseeable default). The Servicer will
not waive a Prepayment Charge in connection with a refinancing of a Mortgage
Loan that is not related to a default or a reasonably foreseeable default.

     (b) If a Prepayment Charge is waived other than as permitted by the prior
paragraph, then the Servicer is required to pay the amount of such waived
Prepayment Charge, for the benefit of the Holders of the Class P Certificates,
by depositing such amount into the Distribution Account from its own funds,
without any right of reimbursement therefor, together with and at the time that
the amount prepaid on the related Mortgage Loan is required to be deposited into
the Distribution Account.

     (a) (c) The Seller represents and warrants to the Depositor and the
Trustee, as of the Closing Date, that the information in the Prepayment Charge
Schedule (including the attached prepayment charge summary) is complete and
accurate in all material respects at the dates as of which the information is
furnished and each Prepayment Charge is permissible and enforceable in
accordance with its terms under applicable state law, except as the
enforceability thereof is limited due to acceleration in connection with a
foreclosure or other involuntary payment.

     (b) (d) Upon discovery by the Servicer or a Responsible Officer of the
Trustee (provided, however, that the Trustee shall have no obligation to conduct
an independent investigation or inquiry in relation thereto) of a breach of the
foregoing clause (c) that materially and adversely affects the right of the
Holders of the Class P Certificates to any Prepayment Charge, the party
discovering the breach shall give prompt written notice to the other parties.
Within 60 days of the earlier of discovery by the Servicer or receipt of notice
by the Servicer of breach, the Servicer shall cure the breach in all material
respects or shall pay into the Certificate Account the amount of the Prepayment
Charge that would otherwise be due from the Mortgagor, less any amount
representing such Prepayment Charge previously collected and paid by the
Servicer into the Certificate Account.

     Section 3.21 Late Payment Fees.

     (a) The Servicer shall not waive any part of any Late Payment Fee unless
(i) the collection of any Late Payment Fee would violate any relevant law or
regulation or (ii) the waiving of the Late Payment Fee would otherwise benefit
the Trust Fund and it is expected that the waiver would maximize recovery of
total proceeds, taking into account the value of the Late Payment Fee and
related Mortgage Loan and doing so is standard and customary in servicing
similar Mortgage Loans (including the waiver of a Late

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Payment Fee in connection with a refinancing of a Mortgage Loan that is related
to a default or reasonably foreseeable default).

     (b) If the covenant made by the Servicer in clause (a) above is breached,
the Servicer must pay into the Certificate Account prior to the Distribution
Account Deposit Date following the end of the related Prepayment Period the
amount of the waived Late Payment Fee.

     (c) The Servicer shall remit Late Payment Fees assessable and not waived
pursuant to clause (a) above in accordance with Section 3.09.

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                                  ARTICLE FOUR

                   DISTRIBUTIONS AND ADVANCES BY THE SERVICER

     Section 4.01 Advances.

     (a) The Servicer shall determine on or before each Servicer Advance Date
whether it is required to make an Advance pursuant to the definition thereof. If
the Servicer determines it is required to make an Advance, it shall, on or
before the Servicer Advance Date, either (i) deposit into the Certificate
Account an amount equal to the Advance or (ii) make an appropriate entry in its
records relating to the Certificate Account that any Amount Held for Future
Distribution has been used by the Servicer in discharge of its obligation to
make any such Advance. Any funds so applied shall be replaced by the Servicer by
deposit in the Certificate Account no later than the close of business on the
next Servicer Advance Date. The Servicer shall be entitled to be reimbursed from
the Certificate Account for all Advances of its own funds made pursuant to this
Section 4.01 as provided in Section 3.09. The obligation to make Advances with
respect to any Mortgage Loan shall continue if such Mortgage Loan has been
foreclosed or otherwise terminated and the Mortgaged Property has not been
liquidated. The Servicer shall inform the Trustee of the amount of the Advance
to be made on each Servicer Advance Date no later than the second Business Day
before the related Distribution Date.

     (b) If the Servicer determines that it will be unable to comply with its
obligation to make the Advances as and when described in the second sentence of
Section 4.01(a), it shall use its best efforts to give written notice thereof to
the Trustee (each such notice an "Advance Notice"; and such notice may be given
by telecopy), not later than 3:00 P.M., New York time, on the Business Day
immediately preceding the related Servicer Advance Date, specifying the amount
that it will be unable to deposit (each such amount an "Advance Deficiency") and
certifying that such Advance Deficiency constitutes an Advance hereunder and is
not a Nonrecoverable Advance. If the Trustee receives a Trustee Advance Notice
on or before 3:00 P.M., New York time on a Servicer Advance Date, the Trustee is
entitled to immediately terminate the Servicer under Section 7.01, and shall,
not later than 3:00 P.M., New York time, on the related Distribution Date,
deposit in the Distribution Account an amount equal to the Advance Deficiency
identified in such Trustee Advance Notice unless it is prohibited from so doing
by applicable law. Notwithstanding the foregoing, the Trustee shall not be
required to make such deposit if the Trustee shall have received written
notification from the Servicer that the Servicer has deposited or caused to be
deposited in the Certificate Account an amount equal to such Advance Deficiency
by 3:00 P.M. New York time on the related Distribution Date. If the Trustee has
not terminated the Servicer, the Servicer shall reimburse the Trustee for the
amount of any Advance (including interest at the Prime Rate on the day of such
reimbursement published in The Wall Street Journal) on such amount, made by the
Trustee pursuant to this Section 4.01(b) not later than the second day following
the related Servicer Advance Date. In the event that the Servicer does not
reimburse the Trustee in accordance with the requirements of the preceding
sentence, the Trustee shall immediately (a) terminate all of the rights and
obligations of the Servicer under this Agreement in accordance with Section 7.01
and (b) subject to the limitations set forth in Section 3.05, assume all of the
rights and obligations of the Servicer hereunder.

     (c) The Servicer shall, not later than the close of business on the
Business Day immediately preceding each Servicer Advance Date, deliver to the
Trustee a report (in form and substance reasonably satisfactory to the Trustee)
that indicates (i) the Mortgage Loans with respect to which the Servicer has
determined that the related Scheduled Payments should be advanced and (ii) the
amount of the related Scheduled Payments. The Servicer shall deliver to the
Trustee on the related Servicer Advance Date an Officer's Certificate of a
Servicing Officer indicating the amount of any proposed Advance determined by
the Servicer to be a Nonrecoverable Advance.

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     Section 4.02 Priorities of Distribution.

     (a) (1) On each Distribution Date, the Trustee shall withdraw any Available
Funds from the Distribution Account and apply such funds to distributions on the
Senior Certificates in the following priority, in each case, to the extent of
Available Funds remaining:

          (i) concurrently, to each interest-bearing Class of Senior
     Certificates, an amount allocable to interest equal to the related Class
     Optimal Interest Distribution Amount, any shortfall being allocated among
     such Classes in proportion to the amount of the Class Optimal Interest
     Distribution Amount that would have been distributed in the absence of such
     shortfall; provided that prior to the applicable Accrual Termination Date,
     each Accrual Amount shall be distributed as provided in Section
     4.02(a)(1)(ii);

          (ii) the Accrual Amount for each Class of Accrual Certificates shall
     be distributed in accordance with the related Accretion Direction Rule;

          (iii) concurrently, to the Classes of Senior Certificates as follows:

               (A)  to the Class PO Certificates the PO Formula Principal Amount
                    until its Class Certificate Balance is reduced to zero; and

               (B)  the Non-PO Formula Principal Amount up to the amount of the
                    Senior Principal Distribution Amount for such Distribution
                    Date in the following priority:

                         1. to the Class A-R Certificates, until its Class
                    Certificate Balance is reduced to zero; and

                         2. concurrently, to the Class A-7 and Class A-8
                    Certificates, the Priority Amount, pro rata, until their
                    respective Class Certificate Balances are reduced to zero;

                         3. sequentially, to the Class A-1 and Class A-2
                    Certificates, in that order, in an amount up to the amount
                    necessary to reduce the aggregate Class Certificate Balance
                    of the Class A-1 and Class A-2 Certificates to their
                    Aggregate Planned Balance for that Distribution Date;

                         4. an amount up to the amount necessary to reduce the
                    aggregate Class Certificate Balance of the Class A-3 and
                    Class A-4 Certificates to the Aggregate Targeted Balance for
                    that Distribution Date in the following priority:

                              (i) to the Class A-3 Certificates, in an amount up
                         to the amount necessary to reduce to its Class
                         Certificate Balance to its Targeted Balance for that
                         Distribution Date;

                              (ii) to the Class A-4 Certificates, until its
                         Class Certificate Balance is reduced to zero; and

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<PAGE>

                              (iii) to the Class A-3 Certificates, without
                         regard to its Targeted Balance, until its Class
                         Certificate Balance is reduced to zero;

                         5. to the Class A-5 Certificates, until its Class
                    Certificate Balance is reduced to zero;

                         6. to the Class A-3 and Class A-4 Certificates, without
                    regard to the Aggregate Targeted Balance, in the following
                    priority:

                              (i) to the Class A-3 Certificates, in an amount up
                         to the amount necessary to reduce its Class Certificate
                         Balance to its Targeted Balance for that Distribution
                         Date;

                              (ii) to the  Class  A-4  Certificates,  until  its
                         Class Certificate Balance is reduced to zero; and

                              (iii)  to  the  Class  A-3  Certificates,  without
                         regard  to  its  Targeted  Balance,   until  its  Class
                         Certificate Balance is reduced to zero;

                         7. sequentially, to the Class A-1 and Class A-2
                    Certificates, in that order, without regard to the Aggregate
                    Planned Balance, until their respective Class Certificate
                    Balances are reduced to zero;

                         8. to the Class A-6 Certificates, until its Class
                    Certificate Balance is reduced to zero; and

                         9. concurrently, to the Class A-7 and Class A-8
                    Certificates, pro rata, without regard to the Priority
                    Amount, until their respective Class Certificate Balances
                    are reduced to zero.

          (iv) to the Class PO Certificates, any Class PO Deferred Amount, up to
     an amount not to exceed the amount calculated pursuant to the definition of
     Subordinated Principal Distribution Amount actually received or advanced
     for such Distribution Date (with such amount to be allocated first from
     amounts calculated pursuant to (i) and (ii) and then (iii) of the
     definition of Subordinated Principal Distribution Amount;

     (2) On each Distribution Date, Available Funds remaining after making the
distributions described in Section 4.02(a)(1) will be distributed to the
Subordinated Certificates and the Class A-R Certificates, subject to paragraph
4.02(e) below, in the following order of priority:

               (A)  to the Class B-1 Certificates, an amount allocable to
                    interest equal to the Class Optimal Interest Distribution
                    Amount for such Class for such Distribution Date;

               (B)  to the Class B-1 Certificates, an amount allocable to
                    principal equal to its Pro Rata Share for such Distribution
                    Date until the Class Certificate Balance thereof is reduced
                    to zero;

               (C)  to the Class B-2 Certificates, an amount allocable to
                    interest equal to the Class Optimal Interest Distribution
                    Amount for such Class for such Distribution Date;

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<PAGE>

               (D)  to the Class B-2 Certificates, an amount allocable to
                    principal equal to its Pro Rata Share for such Distribution
                    Date until the Class Certificate Balance thereof is reduced
                    to zero;

               (E)  to the Class B-3 Certificates, an amount allocable to
                    interest equal to the Class Optimal Interest Distribution
                    Amount for such Class for such Distribution Date;

               (F)  to the Class B-3 Certificates, an amount allocable to
                    principal equal to its Pro Rata Share for such Distribution
                    Date until the Class Certificate Balance thereof is reduced
                    to zero;

               (G)  to the Class B-4 Certificates, an amount allocable to
                    interest equal to the Class Optimal Interest Distribution
                    Amount for such Class for such Distribution Date;

               (H)  to the Class B-4 Certificates, an amount allocable to
                    principal equal to its Pro Rata Share for such Distribution
                    Date until the Class Certificate Balance thereof is reduced
                    to zero;

               (I)  to the Class B-5 Certificates, an amount allocable to
                    interest equal to the Class Optimal Interest Distribution
                    Amount for such Class for such Distribution Date;

               (J)  to the Class B-5 Certificates, an amount allocable to
                    principal equal to its Pro Rata Share for such Distribution
                    Date until the Class Certificate Balance thereof is reduced
                    to zero;

               (K)  to the Class B-6 Certificates, an amount allocable to
                    interest equal to the Class Optimal Interest Distribution
                    Amount for such Class for such Distribution Date; and

               (L)  to the Class B-6 Certificates, an amount allocable to
                    principal equal to its Pro Rata Share for such Distribution
                    Date until the Class Certificate Balance thereof is reduced
                    to zero;

     (3) to the Class A-R Certificates, any remaining funds.

     On each Distribution Date, all amounts representing Prepayment Charges
received during the related Prepayment Period (and amounts paid by the Servicer
for waiving them) will be distributed to the holders of the Class P
Certificates. On the Distribution Date immediately following the expiration of
the latest Prepayment Charge Period of the Mortgage Loans, the $100 held in
trust for the Class P Certificates shall be withdrawn from the Certificate
Account and distributed to the Class P Certificates. On each Distribution Date,
all amounts representing Late Payment Fees assessable during the related
Prepayment Period (and amounts paid by the Servicer for waiving them less any
such amounts not deposited into the Distribution Account by the preceding
Distribution Account Deposit date plus any such amounts deposited into the
Distribution Account with respect to prior Prepayment Periods) will be
distributed to the Holders of the Class L Certificates.

     On any Distribution Date, amounts distributed in respect of Class PO
Deferred Amounts will not reduce the Class Certificate Balance of the Class PO
Certificates.

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     On any Distribution Date, to the extent the Amount Available for Senior
Principal is insufficient to make the full distribution required to be made
pursuant to Section 4.02(a)(1)(iii), (A) the amount distributable on the Class
PO Certificates in respect of principal shall be equal to the product of (1) the
Amount Available for Senior Principal and (2) a fraction, the numerator of which
is the PO Formula Principal Amount and the denominator of which is the sum of
such PO Formula Principal Amount and the Senior Principal Distribution Amount
and (B) the amount distributable on the Senior Certificates other than the Class
PO Certificates, in respect of principal shall be equal to the product of (1)
such Amount Available for Senior Principal and (2) a fraction, the numerator of
which is the Senior Principal Distribution Amount and the denominator of which
is the sum of such Senior Principal Distribution Amount and the PO Formula
Principal Amount.

     (b) On each Distribution Date prior to and including the Accrual
Termination Date, the Accrual Amount for such Distribution Date shall not
(except as provided in the second to last sentence in this paragraph) be
distributed as interest with respect to the Class of Accrual Certificates, but
shall instead be added to the Class Certificate Balance of such Class on the
related Distribution Date. With respect to any Distribution Date prior to and
including the Accrual Termination Date on which principal payments on the Class
of Accrual Certificates are distributed pursuant to Section 4.02(a)(1)(ii), the
related Accrual Amount shall be deemed to have been added on such Distribution
Date to the Class Certificate Balance (and included in the amount distributable
on the related Classes of Accretion Directed Certificates pursuant to Section
4.02(a)(1)(ii) for such Distribution Date) and the related distribution thereon
shall be deemed to have been applied concurrently towards the reduction of all
or a portion of the amount so added and, to the extent of any excess, towards
the reduction of the Class Certificate Balance of such Class of Accrual
Certificates immediately prior to such Distribution Date. Notwithstanding any
such distribution, each such Class shall continue to be a Class of Accrual
Certificates on each subsequent Distribution Date until the Accrual Termination
Date.

     (c) On each Distribution Date on or after the Senior Credit Support
Depletion Date, notwithstanding the allocation and priority set forth in Section
4.02(a)(1)(iii)(B), the Non-PO Formula Principal Amount up to the amount of the
Senior Principal Distribution Amount for such Distribution Date will be
distributed concurrently, as principal of the Classes of Senior Certificates
(other than the Notional Amount Certificates and the Class PO Certificates), pro
rata, on the basis of their respective Class Certificate Balances, until the
Class Certificate Balances thereof are reduced to zero.

     (d) On each Distribution Date, the amount referred to in clause (i) of the
definition of Class Optimal Interest Distribution Amount for each Class of
Certificates for such Distribution Date shall be reduced by (i) the related
Class' pro rata share of Net Prepayment Interest Shortfalls based on the related
Class Optimal Interest Distribution Amount, without taking into account such Net
Prepayment Interest Shortfalls and (ii) the related Class' Allocable Share of
(A) after the Special Hazard Coverage Termination Date, with respect to each
Mortgage Loan (or, after the Senior Credit Support Depletion Date, any Mortgage
Loan) that became a Special Hazard Mortgage Loan during the calendar month
preceding the month of such Distribution Date, the excess of one month's
interest at the Adjusted Net Mortgage Rate on the Stated Principal Balance of
such Mortgage Loan as of the Due Date in such month over the amount of
Liquidation Proceeds applied as interest on such Mortgage Loan with respect to
such month, (B) after the Bankruptcy Coverage Termination Date, with respect to
each Mortgage Loan (or, after the Senior Credit Support Depletion Date, any
Mortgage Loan) that became subject to a Bankruptcy Loss during the calendar
month preceding the month of such Distribution Date, the interest portion of the
related Debt Service Reduction or Deficient Valuation, (C) each Relief Act
Reduction for the Mortgage Loans (or, after the Senior Credit Support Depletion
Date, any Mortgage Loan) incurred during the calendar month preceding the month
of such Distribution Date and (D) after the Fraud Loss Coverage Termination
Date, (or, after the Senior Credit Support Depletion Date, any Mortgage Loan)
that became a Fraud Loan during the calendar month preceding the month of such
Distribution Date, the excess of one

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month's interest at the Adjusted Net Mortgage Rate on the Stated Principal
Balance of such Mortgage Loan as of the Due Date in such month over the amount
of Liquidation Proceeds applied as interest on such Mortgage Loan with respect
to such month.

     (e) Notwithstanding the priority and allocation contained in Section
4.02(a), if, with respect to any Class of Subordinated Certificates, on any
Distribution Date the sum of the related Class Subordination Percentages of such
Class and of all Classes of Subordinated Certificates that have a higher
numerical Class designation than such Class (the "Applicable Credit Support
Percentage") is less than the Original Applicable Credit Support Percentage for
such Class, no distribution of Principal Prepayments on the Mortgage Loans will
be made to any such Classes (the "Restricted Classes") and the amount of such
Principal Prepayments otherwise distributable to the Restricted Classes shall be
distributed to the Classes of Subordinated Certificates having lower numerical
Class designations than such Class, pro rata, based on their respective Class
Certificate Balances immediately prior to such Distribution Date and shall be
distributed in the sequential order set forth in Section 4.02(a)(2).
Notwithstanding the foregoing, the Class of Subordinated Certificates then
outstanding with the lowest numerical class designation shall not be a
Restricted Class.

     (f) If the amount of a Realized Loss on a Mortgage Loan has been reduced by
application of Subsequent Recoveries with respect to such Mortgage Loan, the
amount of such Subsequent Recoveries will be applied sequentially, in the order
of payment priority, to increase the Class Certificate Balance of each related
Class of Certificates to which Realized Losses have been allocated, but in each
case by not more than the amount of Realized Losses previously allocated to that
Class of Certificates pursuant to Section 4.05. Holders of such Certificates
will not be entitled to any payment in respect of the Class Optimal Interest
Distribution Amount on the amount of such increases for any Interest Accrual
Period preceding the Distribution Date on which such increase occurs. Any such
increases shall be applied to the Certificate Balance of each Certificate, of
such Class in accordance with its respective Percentage Interest.

     Section 4.03 [Reserved].

     Section 4.04 [Reserved].

     Section 4.05 Allocation of Realized Losses.

     (a) On or prior to each Determination Date, the Trustee shall determine the
total amount of Realized Losses, including Excess Losses, with respect to each
related Distribution Date.

     Realized Losses with respect to any Distribution Date shall be allocated as
follows:

          (i) the applicable PO Percentage of any Realized Loss, including any
     Excess Loss, shall be allocated to the Class PO Certificates until its
     Class Certificate Balance is reduced to zero; and

          (ii) (A) the applicable Non-PO Percentage of any Realized Loss (other
     than any Excess Loss) shall be allocated first to the Subordinated
     Certificates in reverse order of their respective numerical Class
     designations (beginning with the Class of Subordinated Certificates then
     outstanding with the highest numerical Class designation) until the
     respective Class Certificate Balance of each such Class is reduced to zero,
     and second, to the Classes of Senior Certificates (other than the Notional
     Amount Certificates and Class PO Certificates), pro rata on the basis of
     their respective Class Certificate Balances, in each case immediately prior
     to the related Distribution Date, until the respective Class Certificate
     Balance of each such Class is

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<PAGE>

     reduced to zero or, with respect to a Class of Accrual Certificates, based
     on the lesser of their original Class Certificate Balance and their current
     Class Certificate Balance, until the respective Class Certificate Balance
     of each such Class is reduced to zero; except that any Realized Losses
     (other than Excess Losses) that would otherwise be allocated to the Class
     A-1 and Class A-7 Certificates will instead be allocated concurrently and
     on a pro rata basis to the Class A-8 Certificates, until its Class
     Certificate Balance is reduced to zero; and

          (B) the applicable Non-PO Percentage of any Excess Losses on the
     Mortgage Loans shall be allocated to the Classes of Senior Certificates
     (other than the Class PO Certificates and Notional Amount Certificates) and
     the Classes of Subordinated Certificates then outstanding, pro rata, on the
     basis of their respective Class Certificate Balances, in each case
     immediately prior to such Distribution Date and until the respective Class
     Certificate Balances thereof have been reduced to zero.

     (b) The Class Certificate Balance of the Class of Subordinated Certificates
then outstanding with the highest numerical Class designation shall be reduced
on each Distribution Date by the sum of (i) the amount of any payments on the
Class PO Certificates in respect of Class PO Deferred Amounts and (ii) the
amount, if any, by which the aggregate Class Certificate Balance of all
outstanding Classes of Certificates (after giving effect to the distribution of
principal and the allocation of Realized Losses and Class PO Deferred Amounts on
such Distribution Date) exceeds the aggregate Stated Principal Balance of the
Mortgage Loans for the following Distribution Date.

     (c) Any Realized Loss allocated to a Class of Certificates or any reduction
in the Class Certificate Balance of a Class of Certificates pursuant to Section
4.05(b) shall be allocated among the Certificates of such Class in proportion to
their respective Certificate Balances.

     (d) Any allocation of Realized Losses to a Certificate or any reduction in
the Certificate Balance of a Certificate pursuant to Section 4.05(b) shall be
accomplished by reducing the Certificate Balance thereof immediately following
the distributions made on the related Distribution Date in accordance with the
definition of Certificate Balance.

     (e) Realized Losses shall not be allocated to the Class P and Class L
Certificates.

     Section 4.06 Monthly Statements to Certificateholders.

     (a) Not later than each Distribution Date, the Trustee shall prepare and
make available on its website at https://www.tss.db.com/invr to each
Certificateholder, the Servicer and the Depositor a statement for the related
distribution of:

          (i) the applicable Record Dates, Interest Accrual Periods and
     Determination Dates for calculating distributions for the Distribution
     Date;

          (ii) the amount of funds received from the Servicer for the
     Distribution Date separately identifying amounts received in respect of the
     Mortgage Loans and the amount of Advances included in the distribution on
     the Distribution Date;

          (iii) the Servicing Fee and the amounts of any additional servicing
     compensation received by the Servicer attributable to penalties, fees,
     Excess Proceeds or other similar charges or fees and items with respect to
     the Distribution Date, and, with respect to Lender PMI Loans, the interest
     premium charged the related borrower for primary mortgage guaranty
     insurance;

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          (iv) the Trustee Fee for the Distribution Date;

          (v) the aggregate amount of expenses paid from amounts on deposit in
     the Distribution Account;

          (vi) the aggregate amount on deposit in the Distribution Account as of
     the beginning and end of the related Due Period;

          (vii) the amount of the distribution allocable to principal,
     separately identifying the aggregate amount of any Principal Prepayments
     and Liquidation Proceeds included therein;

          (viii) the amount of the distribution allocable to interest, any Class
     Unpaid Interest Amounts included in the distribution and any remaining
     Class Unpaid Interest Amounts after giving effect to the distribution;

          (ix) if the distribution to the Holders of any Class of Certificates
     is less than the full amount that would be distributable to them if
     sufficient funds were available, the amount of the shortfall and the
     allocation of the shortfall between principal and interest;

          (x) the aggregate amount of Realized Losses incurred and Subsequent
     Recoveries, if any, received during the preceding calendar month and
     aggregate Realized Losses through the Distribution Date;

          (xi) the Class Certificate Balance or Notional Amount of each Class of
     Certificates before and after giving effect to the distribution of
     principal on the Distribution Date;

          (xii) the Pass-Through Rate for each Class of Certificates with
     respect to the Distribution Date;

          (xiii) the LIBOR rate applicable for that Distribution Date;

          (xiv) the number of Mortgage Loans and the aggregate Stated Principal
     Balance of the Mortgage Loans as the first day of the related Due Period
     and the last day of the related Due Period;

          (xv) as of the last day of the related Due Period:

               (A)  the weighted average Mortgage Rate of the Mortgage Loans,
                    and

               (B)  the weighted average remaining term to maturity of the
                    Mortgage Loans;

          (xvi) the number and aggregate outstanding Stated Principal Balance of
     the Mortgage Loans as of the end of the preceding calendar month:

               (A)  delinquent (exclusive of Mortgage Loans in foreclosure) (1)
                    30 to 59 days, (2) 60 to 89 days and (3) 90 or more days and

               (B)  in foreclosure and delinquent (1) 30 to 59 days, (2) 60 to
                    89 days and (3) 90 or more days,

               in each case as of the close of business on the last day of the
               calendar month preceding the Distribution Date;

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          (xvii) for each of the preceding 12 calendar months, or all calendar
     months since the Cut-off Date, whichever is less, the aggregate dollar
     amount of the Scheduled Payments (A) due on all Outstanding Mortgage Loans
     on the Due Date in each such month and (B) delinquent sixty (60) days or
     more on the Due Date in each such month;

          (xviii) with respect to any Mortgage Loan that became an REO Property
     during the preceding calendar month, the loan number and Stated Principal
     Balance of the Mortgage Loan as of the close of business on the
     Determination Date preceding the Distribution Date;

          (xix) the total number and principal balance of any REO Properties
     (and market value, if available) as of the close of business on the
     Determination Date preceding the Distribution Date;

          (xx) the aggregate amount of Principal Prepayments received during the
     related Prepayment Period and the number of Mortgage Loans subject to such
     Principal Prepayments;

          (xxi) the amount of Advances included in the distribution on the
     Distribution Date and the aggregate amount of Advances outstanding as of
     the close of business on the Determination Date;

          (xxii) the aggregate amount of Advances reimbursed during the related
     Due Period, the general source of funds for such reimbursements and the
     aggregate amount of Advances outstanding as of the close of business on the
     Determination Date;

          (xxiii) the aggregate amount of Servicing Advances reimbursed during
     the related Due Period, the general source of funds for such reimbursements
     and the aggregate amount of Servicing Advances outstanding as of the close
     of business on the Determination Date;

          (xxiv) the aggregate number and outstanding Stated Principal Balance
     of Mortgage Loans repurchased during the related Due Period due to material
     breaches of representations and warranties regarding such Mortgage Loans;

          (xxv) the Senior Prepayment Percentage and Subordinated Prepayment
     Percentage for the Distribution Date;

          (xxvi) the Senior Percentage and Subordinated Percentage for the
     Distribution Date;

          (xxvii) the Special Hazard Loss Coverage Amount, the Fraud Loss
     Coverage Amount and the Bankruptcy Loss Coverage Amount, in each case as of
     the related Determination Date;

          (xxviii) with respect to the second Distribution Date, the number and
     aggregate balance of any Delayed Delivery Mortgage Loans not delivered
     within the time periods specified in the definition of Delayed Delivery
     Mortgage Loans;

          (xxix) Prepayment Charges collected or waived by the Servicer;

          (xxx) Late Payment Fees collected or waived by the Servicer;

          (xxxi) the aggregate Stated Principal Balance of the Mortgage Loans
     that became Liquidated Mortgage Loans in the prior month and since the
     Cut-off Date (in each case immediately prior to the Stated Principal
     Balance being reduced to zero);

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          (xxxii) [reserved];

          (xxxiii) the Stated Principal Balance of any Mortgage Loan that has
     been repurchased by the Servicer in accordance with Section 2.02, 2.03 or
     3.12; and

          (xxxiv) the Stated Principal Balance of any Substitute Mortgage Loan
     provided by the Seller and the Stated Principal Balance of any Mortgage
     Loan that has been replaced by a Substitute Mortgage Loan in accordance
     with Section 2.03.

          The Trustee's responsibility for disbursing the above information to
the Certificateholders is limited to the availability, timeliness and accuracy
of the information derived from the Servicer.

          By the Reporting Date, the Servicer shall provide to the Trustee in
electronic form the information needed to determine the distributions to be made
pursuant to Section 4.02 and any other information on which the Servicer and the
Trustee mutually agree.

     (b) On or before the fifth Business Day following the end of each
Prepayment Period (but in no event later than the third Business Day prior to
the related Distribution Date), the Servicer shall deliver to the Trustee (which
delivery may be by electronic data transmission) a report in substantially the
form set forth as Schedule V.

     (c) Within a reasonable period of time after the end of each calendar year,
the Trustee shall cause to be furnished to each Person who at any time during
the calendar year was a Certificateholder, a statement containing the
information set forth in clauses (a)(v) and (a)(vi) of this Section 4.06
aggregated for such calendar year or applicable portion thereof during which
such Person was a Certificateholder. Such obligation of the Trustee shall be
deemed to have been satisfied to the extent that substantially comparable
information shall be provided by the Trustee pursuant to any requirements of the
Code as from time to time in effect.

     Section 4.07 [Reserved].

     Section 4.08 [Reserved].

     Section 4.09 Determination of Pass-Through Rates for LIBOR Certificates.

     On each LIBOR Determination Date so long as the LIBOR Certificates are
outstanding, the Trustee will determine LIBOR on the basis of the British
Bankers' Association ("BBA") "Interest Settlement Rate" for one-month deposits
in U.S. dollars as found on Reuters Page LIBOR01 as of 11:00 a.m. London time on
each LIBOR Determination Date.

     (a) If LIBOR cannot be determined as provided in the first paragraph of
this Section 4.09, the Trustee shall either (i) request each Reference Bank to
inform the Trustee of the quotation offered by its principal London office for
making one-month United States dollar deposits in leading banks in the London
interbank market, as of 11:00 a.m. (London time) on such LIBOR Determination
Date or (ii) in lieu of making any such request, rely on such Reference Bank
quotations that appear at such time on the Reuters Screen LIBO Page (as defined
in the International Swap Dealers Association Inc. Code of Standard Wording,
Assumptions and Provisions for Swaps, 1986 Edition), to the extent available.

     (b) LIBOR for the next Interest Accrual Period for a Class of LIBOR
Certificates will be established by the Trustee on each LIBOR Determination Date
as follows:

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          (i) If on any LIBOR Determination Date two or more Reference Banks
     provide such offered quotations, LIBOR for the next Interest Accrual Period
     for a Class of LIBOR Certificates shall be the arithmetic mean of such
     offered quotations (rounding such arithmetic mean upwards if necessary to
     the nearest whole multiple of 1/32%).

          (ii) If on any LIBOR Determination Date only one or none of the
     Reference Banks provides such offered quotations, LIBOR for the next
     Interest Accrual Period for a Class of LIBOR Certificates shall be
     whichever is the higher of (i) LIBOR as determined on the previous LIBOR
     Determination Date or (ii) the Reserve Interest Rate. The "Reserve Interest
     Rate" shall be the rate per annum which the Trustee determines to be either
     (i) the arithmetic mean (rounded upwards if necessary to the nearest whole
     multiple of 1/32%) of the one-month United States dollar lending rates that
     New York City banks selected by the Trustee are quoting, on the relevant
     LIBOR Determination Date, to the principal London offices of at least two
     of the Reference Banks to which such quotations are, in the opinion of the
     Trustee, being so made, or (ii) in the event that the Trustee can determine
     no such arithmetic mean, the lowest one-month United States dollar lending
     rate which New York City banks selected by the Trustee are quoting on such
     LIBOR Determination Date to leading European banks.

          (iii) If on any LIBOR Determination Date the Trustee is required but
     is unable to determine the Reserve Interest Rate in the manner provided in
     paragraph (b) above, LIBOR shall be LIBOR as determined on the preceding
     LIBOR Determination Date, or, in the case of the first LIBOR Determination
     Date, the Initial LIBOR Rate.

     (c) Until all of the LIBOR Certificates are paid in full, the Trustee will
at all times retain at least four Reference Banks for the purpose of determining
LIBOR with respect to each LIBOR Determination Date. The Servicer initially
shall designate the Reference Banks. Each "Reference Bank" shall be a leading
bank engaged in transactions in Eurodollar deposits in the international
Eurocurrency market, shall not control, be controlled by, or be under common
control with, the Trustee and shall have an established place of business in
London. If any such Reference Bank should be unwilling or unable to act as such
or if the Servicer should terminate its appointment as Reference Bank, the
Trustee shall promptly appoint or cause to be appointed another Reference Bank.
The Trustee shall have no liability or responsibility to any Person for (i) the
selection of any Reference Bank for purposes of determining LIBOR or (ii) any
inability to retain at least four Reference Banks which is caused by
circumstances beyond its reasonable control.

     (d) The Pass-Through Rate for each Class of LIBOR Certificates for each
related Interest Accrual Period shall be determined by the Trustee on each LIBOR
Determination Date so long as the LIBOR Certificates are outstanding on the
basis of LIBOR and the respective formulae appearing in footnotes corresponding
to the LIBOR Certificates in the table relating to the Certificates in the
Preliminary Statement.

     (e) In determining LIBOR, any Pass-Through Rate for the LIBOR Certificates,
any Interest Settlement Rate, or any Reserve Interest Rate, the Trustee may
conclusively rely and shall be protected in relying upon the offered quotations
(whether written, oral or on the Dow Jones Markets) from the BBA designated
banks, the Reference Banks or the New York City banks as to LIBOR, the Interest
Settlement Rate or the Reserve Interest Rate, as appropriate, in effect from
time to time. The Trustee shall not have any liability or responsibility to any
Person for (i) the Trustee's selection of New York City banks for purposes of
determining any Reserve Interest Rate or (ii) its inability, following a
good-faith reasonable effort, to obtain such quotations from, the BBA designated
banks, the Reference Banks or the New York City banks or to determine such
arithmetic mean, all as provided for in this Section 4.09.

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     (f) The establishment of LIBOR and each Pass-Through Rate for the LIBOR
Certificates by the Trustee shall (in the absence of manifest error) be final,
conclusive and binding upon each Holder of a Certificate and the Trustee.

     (g) The Pass-Through Rate for the Interest Accrual Period for the first
Distribution Date for each Class of LIBOR Certificates is set forth in the
applicable footnote under the heading "Master REMIC" in the Preliminary
Statement.

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                                  ARTICLE FIVE

                                THE CERTIFICATES

     Section 5.01 The Certificates.

     The Certificates shall be substantially in the forms attached hereto as
exhibits. The Certificates shall be issuable in registered form, in the minimum
denominations, integral multiples of $1,000 in excess thereof (except that one
Certificate in each Class may be issued in a different amount which must exceed
the applicable minimum denomination) and aggregate denominations per Class set
forth in the Preliminary Statement.

     Subject to Section 9.02 respecting the final distribution on the
Certificates, on each Distribution Date the Trustee shall make distributions to
each Certificateholder of record on the preceding Record Date either (x) by wire
transfer in immediately available funds to the account of such holder at a bank
or other entity having appropriate facilities therefor, if such Holder has so
notified the Trustee at least five Business Days before the related Record Date
or (y) by check mailed by first class mail to such Certificateholder at the
address of such holder appearing in the Certificate Register.

     The Trustee shall execute the Certificates by the manual or facsimile
signature of an authorized officer. Certificates bearing the manual or facsimile
signatures of individuals who were, at the time such signatures were affixed,
authorized to sign on behalf of the Trustee shall bind the Trustee,
notwithstanding that such individuals or any of them have ceased to be so
authorized before the countersignature and delivery of any such Certificates or
did not hold such offices at the date of such Certificate. No Certificate shall
be entitled to any benefit under this Agreement, or be valid for any purpose,
unless countersigned by the Trustee by manual signature, and such
countersignature upon any Certificate shall be conclusive evidence, and the only
evidence, that such Certificate has been duly executed and delivered hereunder.
All Certificates shall be dated the date of their countersignature. On the
Closing Date, the Trustee shall countersign the Certificates to be issued at the
direction of the Depositor, or any affiliate thereof.

     The Depositor shall provide the Trustee, on a continuous basis with an
adequate inventory of Certificates to facilitate transfers.

     Section 5.02 Certificate Register; Registration of Transfer and Exchange of
Certificates.

     (a) The Trustee shall maintain, in accordance with Section 5.06, a
Certificate Register for the Trust Fund in which, subject to subsections (b) and
(c) below and to such reasonable regulations as it may prescribe, the Trustee
shall provide for the registration of Certificates and of transfers and
exchanges of Certificates as herein provided. Upon surrender for registration of
transfer of any Certificate, the Trustee shall execute and deliver, in the name
of the designated transferee or transferees, one or more new Certificates of the
same Class and aggregate Percentage Interest.

     At the option of a Certificateholder, Certificates may be exchanged for
other Certificates of the same Class in authorized denominations and evidencing
the same aggregate Percentage Interest upon surrender of the Certificates to be
exchanged at the office or agency of the Trustee. Whenever any Certificates are
so surrendered for exchange, the Trustee shall execute, authenticate, and
deliver the Certificates that the Certificateholder making the exchange is
entitled to receive. A written instrument of transfer in form satisfactory to
the Trustee duly executed by the holder of a Certificate or his attorney duly
authorized in writing shall accompany every Certificate presented or surrendered
for registration of transfer or exchange.

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     No service charge to the Certificateholders shall be made for any
registration of transfer or exchange of Certificates, but payment of a sum
sufficient to cover any tax or governmental charge that may be imposed in
connection with any transfer or exchange of Certificates may be required.

     All Certificates surrendered for registration of transfer or exchange shall
be cancelled and subsequently destroyed by the Trustee in accordance with the
Trustee's customary procedures.

     (b) No transfer of a Private Certificate shall be made unless such transfer
is made pursuant to an effective registration statement under the Securities Act
and any applicable state securities laws or is exempt from the registration
requirements under the Securities Act and such state securities laws. If a
transfer is to be made in reliance on an exemption from the Securities Act and
such state securities laws, to assure compliance with the Securities Act and
such state securities laws, the Certificateholder desiring to effect such
transfer and such Certificateholder's prospective transferee shall each certify
to the Trustee in writing the facts surrounding the transfer in substantially
the form set forth in Exhibit J (the "Transferor Certificate") and deliver to
the Trustee either (i) a letter in substantially the form of either Exhibit K
(the "Investment Letter") or Exhibit L (the "Rule 144A Letter") or (ii) at the
expense of the transferor, an Opinion of Counsel that the transfer may be made
without registration under the Securities Act. The Depositor shall provide to
any Holder of a Private Certificate and any prospective transferee designated by
that Holder, information regarding the related Certificates and the Mortgage
Loans and any other information necessary to satisfy the condition to
eligibility in Rule 144A(d)(4) for transfer of the Certificate without
registration thereof under the Securities Act pursuant to the registration
exemption provided by Rule 144A. The Trustee and the Servicer shall cooperate
with the Depositor in providing the Rule 144A information referenced in the
preceding sentence, including providing to the Depositor such information
regarding the Certificates, the Mortgage Loans, and other matters regarding the
Trust Fund as the Depositor reasonably requests to meet its obligation under the
preceding sentence. Each Holder of a Private Certificate desiring to effect a
transfer shall, and does hereby agree to, indemnify the Trustee, the Depositor,
the Seller, and the Servicer against any liability that may result if the
transfer is not so exempt or is not made in accordance with such federal and
state laws.

     No transfer of an ERISA-Restricted Certificate shall be made unless the
Trustee shall have received either (i) a representation from the transferee of
such Certificate acceptable to and in form and substance satisfactory to the
Trustee (if the Certificate is a Private Certificate, the requirement is
satisfied only by the Trustee's receipt of a representation letter from the
transferee substantially in the form of Exhibit K or Exhibit L, and if the
Certificate is a Residual Certificate, the requirement is satisfied only by the
Trustee's receipt of a representation letter from the transferee substantially
in the form of Exhibit I), to the effect that (x) the transferee is not an
employee benefit plan or arrangement subject to section 406 of ERISA or a plan
subject to section 4975 of the Code, or a person acting on behalf of any such
plan or arrangement or using the assets of any such plan or arrangement to
effect the transfer, or (y) if the ERISA-Restricted Certificate has been the
subject of an ERISA-Qualifying Underwriting, a representation that the
transferee is an insurance company that is purchasing such Certificate with
funds contained in an "insurance company general account" (as such term is
defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 ("PTCE
95-60") and that the purchase and holding of such Certificate satisfy the
requirements for exemptive relief under Sections I and III of PTCE 95-60, or
(ii) in the case of any ERISA-Restricted Certificate presented for registration
in the name of an employee benefit plan subject to ERISA, or a plan or
arrangement subject to section 4975 of the Code (or comparable provisions of any
subsequent enactments), or a trustee of any such plan or any other person acting
on behalf of any such plan or arrangement or using such plan's or arrangement's
assets, an Opinion of Counsel satisfactory to the Trustee, which Opinion of
Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund,
addressed to the Trustee and the Servicer, to the effect that the purchase and
holding of such ERISA-Restricted Certificate will not result in a non-exempt
prohibited transaction under ERISA or section 4975 of the Code and will not
subject the Trustee or the Servicer to any

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obligation in addition to those expressly undertaken in this Agreement or to any
liability. For purposes of the preceding sentence, with respect to an
ERISA-Restricted Certificate that is not a Residual Certificate, if the
appropriate representation letter or Opinion of Counsel referred to in the
preceding sentence is not furnished, the representation in clause (i) above
shall be deemed to have been made to the Trustee by the transferee's (including
an initial acquirer's) acceptance of the ERISA-Restricted Certificates. If the
representation is violated, or any attempt is made to transfer to a plan or
arrangement subject to section 406 of ERISA or a plan subject to section 4975 of
the Code, or a person acting on behalf of any such plan or arrangement or using
the assets of any such plan or arrangement, without the Opinion of Counsel
described above, the attempted transfer or acquisition shall be void.

     To the extent permitted under applicable law (including ERISA), the Trustee
shall be under no liability to any Person for any registration of transfer of
any ERISA-Restricted Certificate that is in fact not permitted by this Section
5.02(b) or for making any payments due on such Certificate to the Holder thereof
or taking any other action with respect to such Holder under this Agreement so
long as the transfer was registered by the Trustee in accordance with the
foregoing requirements.

     (c) Each Person who has or who acquires any Ownership Interest in a
Residual Certificate shall be deemed by the acceptance or acquisition of such
Ownership Interest to have agreed to be bound by the following provisions, and
the rights of each Person acquiring any Ownership Interest in a Residual
Certificate are expressly subject to the following provisions:

          (i) Each Person holding or acquiring any Ownership Interest in a
     Residual Certificate shall be a Permitted Transferee and shall promptly
     notify the Trustee of any change or impending change in its status as a
     Permitted Transferee.

          (ii) No Ownership Interest in a Residual Certificate may be registered
     on the Closing Date or thereafter transferred, and the Trustee shall not
     register the Transfer of any Residual Certificate unless, in addition to
     the certificates required to be delivered to the Trustee under subparagraph
     (b) above, the Trustee shall have been furnished with an affidavit (a
     "Transfer Affidavit") of the initial owner or the proposed transferee in
     the form of Exhibit I.

          (iii) Each Person holding or acquiring any Ownership Interest in a
     Residual Certificate shall agree (A) to obtain a Transfer Affidavit from
     any other Person to whom such Person attempts to Transfer its Ownership
     Interest in a Residual Certificate, (B) to obtain a Transfer Affidavit from
     any Person for whom such Person is acting as nominee, trustee or agent in
     connection with any Transfer of a Residual Certificate and (C) not to
     Transfer its Ownership Interest in a Residual Certificate or to cause the
     Transfer of an Ownership Interest in a Residual Certificate to any other
     Person if it has actual knowledge that such Person is not a Permitted
     Transferee.

          (iv) Any attempted or purported Transfer of any Ownership Interest in
     a Residual Certificate in violation of this Section 5.02(c) shall be
     absolutely null and void and shall vest no rights in the purported
     Transferee. If any purported transferee shall become a Holder of a Residual
     Certificate in violation of this Section 5.02(c), then the last preceding
     Permitted Transferee shall be restored to all rights as Holder thereof
     retroactive to the date of registration of Transfer of such Residual
     Certificate. The Trustee shall be under no liability to any Person for any
     registration of Transfer of a Residual Certificate that is in fact not
     permitted by Section 5.02(b) and this Section 5.02(c) or for making any
     payments due on such Certificate to the Holder thereof or taking any other
     action with respect to such Holder under this Agreement so long as the
     Transfer was registered after receipt of the related Transfer Affidavit,
     Transferor Certificate and either the Rule 144A Letter or the Investment
     Letter. The Trustee shall be entitled but not

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<PAGE>

     obligated to recover from any Holder of a Residual Certificate that was in
     fact not a Permitted Transferee at the time it became a Holder or, at such
     subsequent time as it became other than a Permitted Transferee, all
     payments made on such Residual Certificate at and after either such time.
     Any such payments so recovered by the Trustee shall be paid and delivered
     by the Trustee to the last preceding Permitted Transferee of such
     Certificate.

          (v) The Depositor shall use its best efforts to make available, upon
     receipt of written request from the Trustee, all information necessary to
     compute any tax imposed under section 860E(e) of the Code as a result of a
     Transfer of an Ownership Interest in a Residual Certificate to any Holder
     who is not a Permitted Transferee.

     The restrictions on Transfers of a Residual Certificate set forth in this
Section 5.02(c) shall cease to apply (and the applicable portions of the legend
on a Residual Certificate may be deleted) with respect to Transfers occurring
after delivery to the Trustee of an Opinion of Counsel, which Opinion of Counsel
shall not be an expense of the Trust Fund, the Trustee, the Seller or the
Servicer, to the effect that the elimination of such restrictions will not cause
any REMIC created under this Agreement to fail to qualify as a REMIC at any time
that the Certificates are outstanding or result in the imposition of any tax on
the Trust Fund, a Certificateholder or another Person. Each Person holding or
acquiring any Ownership Interest in a Residual Certificate hereby consents to
any amendment of this Agreement which, based on an Opinion of Counsel furnished
to the Trustee, is reasonably necessary (a) to ensure that the record ownership
of, or any beneficial interest in, a Residual Certificate is not transferred,
directly or indirectly, to a Person that is not a Permitted Transferee and (b)
to provide for a means to compel the Transfer of a Residual Certificate which is
held by a Person that is not a Permitted Transferee to a Holder that is a
Permitted Transferee.

     (d) The preparation and delivery of all certificates and opinions referred
to above in this Section 5.02 in connection with transfer shall be at the
expense of the parties to such transfers.

     (e) Except as provided below, the Book-Entry Certificates shall at all
times remain registered in the name of the Depository or its nominee and at all
times: (i) registration of the Certificates may not be transferred by the
Trustee except to another Depository; (ii) the Depository shall maintain
book-entry records with respect to the Certificate Owners and with respect to
ownership and transfers of such Book-Entry Certificates; (iii) ownership and
transfers of registration of the Book-Entry Certificates on the books of the
Depository shall be governed by applicable rules established by the Depository;
(iv) the Depository may collect its usual and customary fees, charges and
expenses from its Depository Participants; (v) the Trustee shall deal with the
Depository, Depository Participants and Indirect Participants as representatives
of the Certificate Owners of the Book-Entry Certificates for purposes of
exercising the rights of holders under this Agreement, and requests and
directions for and votes of such representatives shall not be deemed to be
inconsistent if they are made with respect to different Certificate Owners; and
(vi) the Trustee may rely and shall be fully protected in relying upon
information furnished by the Depository with respect to its Depository
Participants and furnished by the Depository Participants with respect to
Indirect Participants and persons shown on the books of such Indirect
Participants as direct or indirect Certificate Owners.

     All transfers by Certificate Owners of Book-Entry Certificates shall be
made in accordance with the procedures established by the Depository Participant
or brokerage firm representing the Certificate Owner. Each Depository
Participant shall only transfer Book-Entry Certificates of Certificate Owners it
represents or of brokerage firms for which it acts as agent in accordance with
the Depository's normal procedures.

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     If (x) (i) the Depository or the Depositor advises the Trustee in writing
that the Depository is no longer willing or able to properly discharge its
responsibilities as Depository, and (ii) the Trustee or the Depositor is unable
to locate a qualified successor or (y) after the occurrence of an Event of
Default, Certificate Owners representing at least 51% of the Certificate Balance
of the Book-Entry Certificates together advise the Trustee and the Depository
through the Depository Participants in writing that the continuation of a
book-entry system through the Depository is no longer in the best interests of
the Certificate Owners, the Trustee shall notify all Certificate Owners, through
the Depository, of the occurrence of any such event and of the availability of
definitive, fully-registered Certificates (the "Definitive Certificates") to
Certificate Owners requesting the same. Upon surrender to the Trustee of the
related Class of Certificates by the Depository, accompanied by the instructions
from the Depository for registration, the Trustee shall issue the Definitive
Certificates. Neither the Servicer, the Depositor nor the Trustee shall be
liable for any delay in delivery of such instruction and each may conclusively
rely on, and shall be protected in relying on, such instructions. The Servicer
shall provide the Trustee with an adequate inventory of certificates to
facilitate the issuance and transfer of Definitive Certificates. Upon the
issuance of Definitive Certificates all references herein to obligations imposed
upon or to be performed by the Depository shall be deemed to be imposed upon and
performed by the Trustee, to the extent applicable with respect to such
Definitive Certificates and the Trustee shall recognize the Holders of the
Definitive Certificates as Certificateholders hereunder; provided that the
Trustee shall not by virtue of its assumption of such obligations become liable
to any party for any act or failure to act of the Depository.

     Section 5.03 Mutilated, Destroyed, Lost or Stolen Certificates.

     If (a) any mutilated Certificate is surrendered to the Trustee, or (b) the
Trustee receives evidence to its satisfaction of the destruction, loss, or theft
of any Certificate and the Servicer and the Trustee receive the security or
indemnity required by them to hold each of them harmless, then, in the absence
of notice to the Trustee that the Certificate has been acquired by a Protected
Purchaser, and if the requirements of Section 8-406 of the UCC are met and
subject to Section 8-405 of the UCC, the Trustee shall execute, countersign, and
deliver, in exchange for or in lieu of any such mutilated, destroyed, lost, or
stolen Certificate, a new Certificate of like Class, tenor, and Percentage
Interest. In connection with the issuance of any new Certificate under this
Section 5.03, the Trustee may require the payment of a sum sufficient to cover
any tax or other governmental charge that may be imposed in relation thereto and
any other expenses (including the fees and expenses of the Trustee) connected
therewith. Any replacement Certificate issued pursuant to this Section 5.03
shall constitute complete and indefeasible evidence of ownership, as if
originally issued, whether or not the lost, stolen, or destroyed Certificate is
found at any time.

     Section 5.04 Persons Deemed Owners.

     The Servicer, the Trustee, and any agent of the Servicer or the Trustee may
treat the Person in whose name any Certificate is registered as the owner of
such Certificate for the purpose of receiving distributions as provided in this
Agreement and for all other purposes whatsoever, and neither the Servicer, the
Trustee nor any agent of the Servicer or the Trustee shall be affected by any
notice to the contrary.

     Section 5.05 Access to List of Certificateholders' Names and Addresses.

     If three or more Certificateholders and/or Certificate Owners (a) request
such information in writing from the Trustee, (b) state that such
Certificateholders and/or Certificate Owners desire to communicate with other
Certificateholders and/or Certificate Owners with respect to their rights under
this Agreement or under the Certificates, and (c) provide a copy of the
communication which such

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Certificateholders and/or Certificate Owners propose to transmit, or if the
Depositor or Servicer shall request such information in writing from the
Trustee, then the Trustee shall, within ten Business Days after the receipt of
such request, provide the Depositor, the Servicer or such Certificateholders
and/or Certificate Owners at such recipients' expense the most recent list of
the Certificateholders of such Trust Fund held by the Trustee. The Depositor and
every Certificateholder and/or Certificate Owner, by receiving and holding a
Certificate, agree that the Trustee shall not be held accountable because of the
disclosure of any such information as to the list of the Certificateholders
hereunder, regardless of the source from which such information was derived.

     Section 5.06 Maintenance of Office or Agency.

     The Certificate Registrar will maintain at its expense an office or offices
or agency or agencies in the United States located at DB Services Tennessee, 648
Grassmere Park Rd., Nashville, TN 37211-3658 Attention: Transfer Unit., where
Certificates may be surrendered for registration of transfer or exchange. The
Certificate Registrar will give prompt written notice to the Certificateholders
and the Trustee (if other than the Certificate Registrar) of any change in such
location of any such office or agency.

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                                   ARTICLE SIX

                         THE DEPOSITOR AND THE SERVICER

     Section 6.01 Respective Liabilities of the Depositor and the Servicer.

     The Depositor and the Servicer shall each be liable in accordance with this
Agreement only to the extent of the obligations specifically and respectively
imposed upon and undertaken by them in this Agreement.

     Section 6.02 Merger or Consolidation of the Depositor or the Servicer.

     The Depositor and the Servicer will each keep in full effect their
existence and their rights and franchises as a corporation and a federal savings
bank, respectively, under the laws of the United States or under the laws of one
of the states thereof and will each obtain and preserve its qualification to do
business as a foreign corporation in each jurisdiction in which such
qualification is or shall be necessary to protect the validity and
enforceability of this Agreement, or any of the Mortgage Loans and to perform
its respective duties under this Agreement.

     Any Person into which the Depositor or the Servicer may be merged or
consolidated, or any Person resulting from any merger or consolidation to which
the Depositor or the Servicer shall be a party, or any person succeeding to the
business of the Depositor or the Servicer, shall be the successor of the
Depositor or the Servicer, as the case may be, hereunder, without the execution
or filing of any paper or any further act on the part of any of the parties
hereto, anything herein to the contrary notwithstanding; provided, however, that
the successor or surviving Person to the Servicer shall be qualified to sell
mortgage loans to, and to service mortgage loans on behalf of, FNMA or FHLMC.

     As a condition to the effectiveness of any merger or consolidation, at
least 15 calendar days prior to the effective date of any merger or
consolidation of the Servicer, the Servicer shall provide (x) written notice to
the Depositor of any successor pursuant to this Section and (y) in writing and
in form and substance reasonably satisfactory to the Depositor, all information
reasonably requested by the Depositor in order to comply with its reporting
obligation under Item 6.02 of Form 8-K with respect to a replacement Servicer.

     Section 6.03 Limitation on Liability of the Depositor, the Seller, the
Servicer, and Others.

     None of the Depositor, the Seller, the Servicer or any of the directors,
officers, employees or agents of the Depositor, the Seller or the Servicer shall
be under any liability to the Certificateholders for any action taken or for
refraining from the taking of any action in good faith pursuant to this
Agreement, or for errors in judgment; provided, however, that this provision
shall not protect the Depositor, the Seller, the Servicer or any such Person
against any breach of representations or warranties made by it herein or protect
the Depositor, the Seller, the Servicer or any such Person from any liability
which would otherwise be imposed by reasons of willful misfeasance, bad faith or
gross negligence in the performance of duties or because of reckless disregard
of obligations and duties hereunder. The Depositor, the Seller, the Servicer,
and any director, officer, employee or agent of the Depositor, the Seller or the
Servicer may rely in good faith on any document of any kind prima facie properly
executed and submitted by any Person respecting any matters arising hereunder.
The Depositor, the Seller, the Servicer, and any director, officer, employee or
agent of the Depositor, the Seller or the Servicer shall be indemnified by the
Trust Fund and held harmless against any loss, liability or expense incurred in
connection with any audit, controversy or judicial proceeding relating to a
governmental taxing authority or any legal action relating to this Agreement or
the Certificates, other than any loss, liability or expense related to any
specific

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Mortgage Loan or Mortgage Loans (except as any such loss, liability or expense
shall be otherwise reimbursable pursuant to this Agreement) and any loss,
liability or expense incurred because of willful misfeasance, bad faith or gross
negligence in the performance of duties hereunder or because of reckless
disregard of obligations and duties hereunder. None of the Depositor, the Seller
or the Servicer shall be under any obligation to appear in, prosecute or defend
any legal action that is not incidental to its respective duties hereunder and
which in its opinion may involve it in any expense or liability; provided,
however, that any of the Depositor, the Seller or the Servicer may in its
discretion undertake any such action that it may deem appropriate in respect of
this Agreement and the rights and duties of the parties hereto and interests of
the Trustee and the Certificateholders hereunder. In such event, the legal
expenses and costs of such action and any liability resulting therefrom shall be
expenses, costs and liabilities of the Trust Fund, and the Depositor, the
Seller, and the Servicer shall be entitled to be reimbursed therefor out of the
Certificate Account.

     Section 6.04 Limitation on Resignation of the Servicer.

     The Servicer shall not resign from the obligations and duties hereby
imposed on it except (a) upon appointment of a successor servicer and receipt by
the Trustee of a letter from each Rating Agency that such a resignation and
appointment will not result in a downgrading, qualification or withdrawal of the
rating of any of the Certificates or (b) upon determination that its duties
under this Agreement are no longer permissible under applicable law. Any such
determination under clause (b) permitting the resignation of the Servicer shall
be evidenced by an Opinion of Counsel to such effect delivered to the Trustee.
No such resignation shall become effective until the Trustee or a successor
servicer shall have assumed the Servicer's responsibilities, duties, liabilities
and obligations under this Agreement and the Depositor shall have received the
information described in the following sentence. As a condition to the
effectiveness of any such resignation, at least 15 calendar days prior to the
effective date of such resignation, the Servicer shall provide (x) written
notice to the Depositor of any successor pursuant to this Section and (y) in
writing and in form and substance reasonably satisfactory to the Depositor, all
information reasonably requested by the Depositor in order to comply with its
reporting obligation under Item 6.02 of Form 8-K with respect to the resignation
of the Servicer.

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                                  ARTICLE SEVEN

                                     DEFAULT

     Section 7.01 Events of Default.

     "Event of Default," wherever used in this Agreement, means any one of the
following events:

     (a) any failure by the Servicer to deposit in the Certificate Account or
remit to the Trustee any payment required to be made by it under this Agreement,
which failure continues unremedied for five days after the date on which written
notice of the failure has been given to the Servicer by the Trustee or the
Depositor or to the Servicer and the Trustee by the Holders of Certificates of
any Class evidencing not less than 25% of the aggregate Percentage Interests of
the Class; or

     (b) any failure by the Servicer to observe or perform in any material
respect any other of the covenants or agreements on the part of the Servicer
contained in this Agreement (except with respect to a failure related to a
Limited Exchange Act Reporting Obligation), which failure materially affects the
rights of Certificateholders and continues unremedied for a period of 60 days
after the date on which written notice of such failure shall have been given to
the Servicer by the Trustee or the Depositor, or to the Servicer and the Trustee
by the Holders of Certificates of any Class evidencing not less than 25% of the
Percentage Interests of the Class; provided that the sixty-day cure period shall
not apply to the initial delivery of the Mortgage File for Delay Delivery
Mortgage Loans nor the failure to repurchase or substitute in lieu thereof; or

     (c) a decree or order of a court or agency or supervisory authority having
jurisdiction in the premises for the appointment of a receiver, conservator or
liquidator in any insolvency, readjustment of debt, marshalling of assets and
liabilities or similar proceedings, or for the winding-up or liquidation of its
affairs, shall have been entered against the Servicer and such decree or order
shall have remained in force undischarged or unstayed for a period of 60
consecutive days; or

     (d) the Servicer shall consent to the appointment of a receiver,
conservator or liquidator in any insolvency, readjustment of debt, marshalling
of assets and liabilities or similar proceedings of or relating to the Servicer
or all or substantially all of the property of the Servicer; or

     (e) the Servicer shall admit in writing its inability to pay its debts
generally as they become due, file a petition to take advantage of, or commence
a voluntary case under, any applicable insolvency or reorganization statute,
make an assignment for the benefit of its creditors, or voluntarily suspend
payment of its obligations; or

     (f) the Servicer shall fail (i) to make an Advance on the Servicer Advance
Date or (ii) to reimburse in full the Trustee within two days of the Servicer
Advance Date for any Advance made by the Trustee pursuant to Section 4.01(b).

     If an Event of Default described in clauses (a) through (f) of this Section
7.01 occurs, then, and in each and every such case, so long as such Event of
Default shall not have been remedied, the Trustee may, or at the direction of
the Holders of Certificates of any Class evidencing not less than 66 2/3% of the
Percentage Interests of the Class, the Trustee shall by notice in writing to the
Servicer (with a copy to each Rating Agency), terminate all of the rights and
obligations of the Servicer under this Agreement and in the Mortgage Loans and
the proceeds thereof, other than its rights as a Certificateholder hereunder. In
addition, if during the period that the Depositor is required to file Exchange
Act Reports with respect to the Trust Fund, the Servicer shall fail to observe
or perform any of the obligations that constitute a

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Limited Exchange Act Reporting Obligation or the obligations set forth in
Section 3.17(a) or Section 11.07(a)(i) and (ii), and such failure continues for
the lesser of 10 calendar days or such period in which the applicable Exchange
Act Report can be filed timely (without taking into account any extensions), so
long as such failure shall not have been remedied, the Trustee shall, but only
at the direction of the Depositor, terminate all of the rights and obligations
of the Servicer under this Agreement and in and to the Mortgage Loans and the
proceeds thereof, other than its rights as a Certificateholder hereunder. The
Depositor shall not be entitled to terminate the rights and obligations of the
Servicer if a failure of the Servicer to identify a Subcontractor "participating
in the servicing function" within the meaning of Item 1122 of Regulation AB was
attributable solely to the role or functions of such Subcontractor with respect
to mortgage loans other than the Mortgage Loans.

     On and after the receipt by the Servicer of such written notice, all
authority and power of the Servicer hereunder, whether with respect to the
Mortgage Loans or otherwise, shall pass to and be vested in the Trustee. The
Trustee shall make any Advance that the Servicer failed to make subject to
Section 3.05, whether or not the obligations of the Servicer have been
terminated pursuant to this Section. The Trustee is hereby authorized and
empowered to execute and deliver, on behalf of the Servicer, as attorney-in-fact
or otherwise, any documents and other instruments, and to do or accomplish all
other acts or things necessary or appropriate to effect the purposes of such
notice of termination, whether to complete the transfer and endorsement or
assignment of the Mortgage Loans and related documents, or otherwise. Unless
expressly provided in such written notice, no such termination shall affect any
obligation of the Servicer to pay amounts owed pursuant to Article Eight. The
Servicer agrees to cooperate with the Trustee in effecting the termination of
the Servicer's responsibilities and rights hereunder, including the transfer to
the Trustee of all cash amounts which shall at the time be credited to the
Certificate Account, or thereafter be received with respect to the Mortgage
Loans. If the Servicer fails to make any Advance required under Section 4.01 of
this Agreement, thereby triggering an Event of Default described in clause (f)
of this Section 7.01, the Trustee shall make such Advance on that Distribution
Date.

     Notwithstanding any termination of the activities of the Servicer under
this Agreement, the Servicer shall be entitled to receive, out of any late
collection of a Scheduled Payment on a Mortgage Loan which was due before the
notice terminating such Servicer's rights and obligations as Servicer hereunder
and received after such notice, that portion thereof to which such Servicer
would have been entitled pursuant to Sections 3.09(a)(i) through (viii), and any
other amounts payable to such Servicer hereunder the entitlement to which arose
before the termination of its activities hereunder.

     If the Servicer is terminated, the Trustee shall provide the Depositor in
writing and in form and substance reasonably satisfactory to the Depositor, all
information reasonably requested by the Depositor in order to comply with its
reporting obligation under Item 6.02 of Form 8-K with respect to a successor
servicer in the event the Trustee should succeed to the duties of the Servicer
as set forth herein.

     Section 7.02 Trustee to Act; Appointment of Successor.

     On and after the time the Servicer receives a notice of termination
pursuant to Section 7.01, the Trustee shall, subject to and to the extent
provided in Section 3.05, be the successor to the Servicer in its capacity as
Servicer under this Agreement and the transactions set forth or provided for
herein and shall be subject to all the responsibilities, duties and liabilities
relating thereto placed on the Servicer by the terms hereof and applicable law
including the obligation to make Advances pursuant to Section 4.01. As
compensation therefor, the Trustee shall be entitled to all funds relating to
the Mortgage Loans that the Servicer would have been entitled to charge to the
Certificate Account or Distribution Account if the Servicer had continued to act
hereunder, including, if the Servicer was receiving the Servicing Fee, the
Servicing Fee. Notwithstanding the foregoing, if the Trustee has become the
successor to the Servicer in

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accordance with Section 7.01, the Trustee may, if it shall be unwilling to so
act, or shall, if it is prohibited by applicable law from making Advances
pursuant to Section 4.01 or if it is otherwise unable to so act, appoint, or
petition a court of competent jurisdiction to appoint, any established mortgage
loan servicing institution the appointment of which does not adversely affect
the then current rating of the Certificates by each Rating Agency, as the
successor to the Servicer hereunder in the assumption of all or any part of the
responsibilities, duties or liabilities of the Servicer hereunder. Any successor
to the Servicer shall be an institution which is a FNMA and FHLMC approved
seller/servicer in good standing, which has a net worth of at least $15,000,000,
which is willing to service the Mortgage Loans and which executes and delivers
to the Depositor and the Trustee an agreement accepting such delegation and
assignment, containing an assumption by such Person of the rights, powers,
duties, responsibilities, obligations and liabilities of the Servicer (other
than liabilities of the Servicer under Section 6.03 incurred before termination
of the Servicer under Section 7.01), with like effect as if originally named as
a party to this Agreement; provided that each Rating Agency acknowledges that
its rating of the Certificates in effect immediately before such assignment and
delegation will not be qualified or reduced as a result of such assignment and
delegation. Pending appointment of a successor to the Servicer hereunder, the
Trustee shall act in such capacity as provided above, subject to section 3.03
and unless prohibited by law. In connection with such appointment and
assumption, the Trustee may make such arrangements for the compensation of such
successor out of payments on Mortgage Loans as it and such successor shall
agree; provided, however, that in no case shall the rate of such compensation
exceed the Servicing Fee Rate. The Trustee and such successor shall take such
action, consistent with this Agreement, as shall be necessary to effectuate any
such succession. Neither the Trustee nor any other successor servicer shall be
deemed to be in default hereunder because of any failure to make, or any delay
in making, any distribution hereunder or any portion thereof or any failure to
perform, or any delay in performing, any duties or responsibilities hereunder,
in either case caused by the failure of the Servicer to deliver or provide, or
any delay in delivering or providing, any cash, information, documents or
records to it.

     In connection with the termination or resignation of the Servicer
hereunder, either (i) the successor Servicer, including the Trustee if the
Trustee is acting as successor Servicer, shall represent and warrant that it is
a member of MERS in good standing and shall agree to comply in all material
respects with the rules and procedures of MERS in connection with the servicing
of the Mortgage Loans that are registered with MERS, or (ii) the predecessor
Servicer shall cooperate with the successor Servicer either (x) in causing MERS
to execute and deliver an assignment of Mortgage in recordable form to transfer
the Mortgage from MERS to the Trustee and to execute and deliver such other
notices, documents and other instruments as may be necessary or desirable to
effect a transfer of such Mortgage Loan or servicing of such Mortgage Loan on
the MERS(R) System to the successor Servicer or (y) in causing MERS to designate
on the MERS(R) System the successor Servicer as the servicer of such Mortgage
Loan. The predecessor Servicer shall file or cause to be filed any such
assignment in the appropriate recording office. The successor Servicer shall
cause such assignment to be delivered to the Trustee promptly upon receipt of
the original with evidence of recording thereon or a copy certified by the
public recording office in which such assignment was recorded.

     Any successor to the Servicer as servicer shall give notice to the
Mortgagors of such change of servicer and shall, during the term of its service
as servicer, maintain in force the policy or policies that the Servicer is
required to maintain pursuant to this Agreement.

     Section 7.03 Notification to Certificateholders.

     (a) Upon any termination of or appointment of a successor to the Servicer,
the Trustee shall give prompt written notice thereof to Certificateholders and
to each Rating Agency.

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     (b) Within 60 days after the occurrence of any Event of Default, the
Trustee shall transmit by mail to all Certificateholders and each Rating Agency
notice of each such Event of Default hereunder known to the Trustee, unless such
Event of Default shall have been cured or waived.

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                                  ARTICLE EIGHT

                             CONCERNING THE TRUSTEE

     Section 8.01 Duties of the Trustee.

     The Trustee, before the occurrence of an Event of Default and after the
curing of all Events of Default that may have occurred, shall undertake to
perform such duties and only such duties as are specifically set forth in this
Agreement. In case an Event of Default has occurred and remains uncured, the
Trustee shall exercise such of the rights and powers vested in it by this
Agreement, and use the same degree of care and skill in their exercise as a
prudent person would exercise or use under the circumstances in the conduct of
such person's own affairs.

     The Trustee, upon receipt of all resolutions, certificates, statements,
opinions, reports, documents, orders or other instruments furnished to the
Trustee that are specifically required to be furnished pursuant to any provision
of this Agreement shall examine them to determine whether they are in the form
required by this Agreement. The Trustee shall not be responsible for the
accuracy or content of any such resolution, certificate, statement, opinion,
report, document, order, or other instrument.

     No provision of this Agreement shall be construed to relieve the Trustee
from liability for its own negligent action, its own negligent failure to act or
its own willful misconduct; provided, however, that, unless an Event of Default
known to the Trustee has occurred and is continuing,

     (a) the duties and obligations of the Trustee shall be determined solely by
the express provisions of this Agreement, the Trustee shall not be liable except
for the performance of the duties and obligations specifically set forth in this
Agreement, no implied covenants or obligations shall be read into this Agreement
against the Trustee, and the Trustee may conclusively rely, as to the truth of
the statements and the correctness of the opinions expressed therein, upon any
certificates or opinions furnished to the Trustee and conforming to the
requirements of this Agreement which it believed in good faith to be genuine and
to have been duly executed by the proper authorities respecting any matters
arising hereunder;

     (b) the Trustee shall not be liable for an error of judgment made in good
faith by a Responsible Officer or Responsible Officers of the Trustee, unless it
is finally proven that the Trustee was negligent in ascertaining the pertinent
facts; and

     (c) the Trustee shall not be liable with respect to any action taken,
suffered, or omitted to be taken by it in good faith in accordance with the
direction of Holders of Certificates evidencing not less than 25% of the Voting
Rights of Certificates relating to the time, method, and place of conducting any
proceeding for any remedy available to the Trustee, or exercising any trust or
power conferred upon the Trustee under this Agreement. As long as any Voting
Rights are held by parties other than the Seller, its Affiliates, or its agents,
Voting Rights of Certificates held by the Seller, its Affiliates or its agents
as the Seller shall certify to the Trustee upon any such entity obtaining such
ownership will be excluded from participating in such voting arrangements, and
excluded from determining the 25% threshold.

     Section 8.02 Certain Matters Affecting the Trustee.

     Except as otherwise provided in Section 8.01:

     (a) the Trustee may request and rely upon and shall be protected in acting
or refraining from acting upon any resolution, Officer's Certificate,
certificate of auditors or any other certificate, statement,

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<PAGE>

instrument, opinion, report, notice, request, consent, order, appraisal, bond or
other paper or document believed by it to be genuine and to have been signed or
presented by the proper party or parties and the Trustee shall have no
responsibility to ascertain or confirm the genuineness of any signature of any
such party or parties;

     (b) the Trustee may consult with counsel, financial advisers or accountants
and the advice of any such counsel, financial advisers or accountants and any
Opinion of Counsel shall be full and complete authorization and protection in
respect of any action taken or suffered or omitted by it hereunder in good faith
and in accordance with such Opinion of Counsel;

     (c) the Trustee shall not be liable for any action taken, suffered or
omitted by it in good faith and believed by it to be authorized or within the
discretion or rights or powers conferred upon it by this Agreement;

     (d) the Trustee shall not be bound to make any investigation into the facts
or matters stated in any resolution, certificate, statement, instrument,
opinion, report, notice, request, consent, order, approval, bond or other paper
or document, unless requested in writing so to do by Holders of Certificates
evidencing not less than 25% of the Voting Rights allocated to each Class of
Certificates (provided, however, that no Certificates held by the Seller, the
Depositor or any Affiliate thereof shall be given effect for the purpose of
calculating any such aggregation of Voting Rights);

     (e) the Trustee may execute any of the trusts or powers hereunder or
perform any duties hereunder either directly or by or through agents,
accountants or attorneys and the Trustee shall not be responsible for any
misconduct or negligence on the part of any agents, accountants or attorneys
appointed with due care by it hereunder;

     (f) the Trustee shall not be required to risk or expend its own funds or
otherwise incur any financial liability in the performance of any of its duties
or in the exercise of any of its rights or powers hereunder if it shall have
reasonable grounds for believing that repayment of such funds or adequate
indemnity against such risk or liability is not assured to it;

     (g) the Trustee shall not be liable for any loss on any investment of funds
pursuant to this Agreement (other than as issuer of the investment security);

     (h) the Trustee shall not be deemed to have knowledge of an Event of
Default until a Responsible Officer of the Trustee shall have received written
notice thereof;

     (i) the Trustee shall be under no obligation to exercise any of the trusts,
rights or powers vested in it by this Agreement or to institute, conduct or
defend any litigation hereunder or in relation hereto at the request, order or
direction of any of the Certificateholders, pursuant to this Agreement, unless
such Certificateholders shall have offered to the Trustee reasonable security or
indemnity satisfactory to the Trustee against the costs, expenses and
liabilities which may be incurred therein or thereby;

     (j) the Trustee or its Affiliates are permitted to receive additional
compensation that could be deemed to be in the Trustee's economic self-interest
for (i) serving as investment adviser, administrator, shareholder servicing
agent, custodian or sub-custodian with respect to certain of the Permitted
Investments, (ii) using Affiliates to effect transactions in certain Permitted
Investments and (iii) effecting transactions in certain Permitted Investments.
The Trustee does not guarantee the performance of any Permitted Investment; and

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     (k) the Trustee shall not knowingly take any action that would cause the
Trust Fund to fail to qualify as a qualifying special purpose entity.

     In order to comply with laws, rules, regulations and executive orders in
effect from time to time applicable to banking institutions, including those
relating to the funding of terrorist activities and money laundering
("Applicable Law"), the Trustee is required to obtain, verify and record certain
information relating to individuals and entities which maintain a business
relationship with the Trustee. Accordingly, each of the parties agrees to
provide to the Trustee upon its request from time to time such identifying
information and documentation as may be available for such party in order to
enable the Trustee to comply with Applicable Law.

     Section 8.03 Trustee Not Liable for Certificates or Mortgage Loans.

     The recitals contained herein and in the Certificates shall be taken as the
statements of the Depositor or the Seller, as the case may be, and the Trustee
assumes no responsibility for their correctness. The Trustee makes no
representations as to the validity or sufficiency of this Agreement or of the
Certificates or of any Mortgage Loan or related document other than with respect
to the Trustee's execution and countersignature of the Certificates. The Trustee
shall not be accountable for the use or application by the Depositor or the
Servicer of any funds paid to the Depositor or the Servicer in respect of the
Mortgage Loans or deposited in or withdrawn from the Certificate Account by the
Depositor or the Servicer.

     Except as provided in Section 2.01(c), the Trustee shall have no
responsibility for filing or recording any financing or continuation statement
in any public office at any time or to otherwise perfect or maintain the
perfection of any security interest or lien granted to it hereunder (unless the
Trustee shall have become the successor Servicer). The Trustee makes no
representations as to the validity or sufficiency of this Agreement or of the
Certificates or of any Mortgage Loan or related document or of MERS or the
MERS(R) System other than with respect to the Trustee's execution and
counter-signature of the Certificates.

     The Trustee executes the Certificates not in its individual capacity but
solely as Trustee of the Trust Fund created by this Agreement, in the exercise
of the powers and authority conferred and vested in it by this Agreement. Each
of the undertakings and agreements made on the part of the Trustee on behalf of
the Trust Fund in the Certificates is made and intended not as a personal
undertaking or agreement by the Trustee but is made and intended for the purpose
of binding only the Trust Fund.

     Section 8.04 Trustee May Own Certificates.

     The Trustee in its individual or any other capacity may become the owner or
pledgee of Certificates with the same rights as it would have if it were not the
Trustee.

     Section 8.05 Trustee's Fees and Expenses.

     As compensation for its activities under this Agreement, on each
Distribution Date the Trustee may withdraw from the Distribution Account the
Trustee Fee for that Distribution Date. The Trustee and any director, officer,
employee, or agent of the Trustee shall be indemnified by the Servicer against
any loss, liability, or expense (including reasonable attorney's fees) resulting
from any error in any tax or information return prepared by the Servicer or
incurred in connection with any claim or legal action relating to

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     (a) this Agreement, (b) the Certificates, or (c) the performance of any of
the Trustee's duties under this Agreement, other than any loss, liability or
expense incurred because of willful misfeasance, bad faith or negligence in the
performance of any of the Trustee's duties hereunder or incurred by reason of
any action of the Trustee taken at the direction of the Certificateholders under
this Agreement. This indemnity shall survive the termination of this Agreement
or the resignation or removal of the Trustee under this Agreement. Without
limiting the foregoing, except as otherwise agreed upon in writing by the
Depositor and the Trustee, and except for any expense, disbursement, or advance
arising from the Trustee's negligence, bad faith, or willful misconduct, the
Servicer shall pay or reimburse the Trustee, for all reasonable expenses,
disbursements, and advances incurred or made by the Trustee in accordance with
this Agreement with respect to

     (A) the reasonable compensation, expenses, and disbursements of its counsel
not associated with the closing of the issuance of the Certificates and

     (B) the reasonable compensation, expenses, and disbursements of any
accountant, engineer, or appraiser that is not regularly employed by the
Trustee, to the extent that the Trustee must engage them to perform services
under this Agreement.

Except as otherwise provided in this Agreement, the Trustee shall not be
entitled to payment or reimbursement for any routine ongoing expenses incurred
by the Trustee in the ordinary course of its duties as Trustee, Registrar, or
Paying Agent under this Agreement or for any other expenses.

     Section 8.06 Eligibility Requirements for the Trustee.

     The Trustee hereunder shall at all times be a corporation or association
organized and doing business under the laws of a state or the United States of
America, authorized under such laws to exercise corporate trust powers, having a
combined capital and surplus of at least $50,000,000, subject to supervision or
examination by federal or state authority and with a credit rating which would
not cause either of the Rating Agencies to reduce their respective then current
ratings of the Certificates (or having provided such security from time to time
as is sufficient to avoid such reduction) as evidenced in writing by each Rating
Agency. If such corporation or association publishes reports of condition at
least annually, pursuant to law or to the requirements of the aforesaid
supervising or examining authority, then for the purposes of this Section 8.06
the combined capital and surplus of such corporation or association shall be
deemed to be its combined capital and surplus as set forth in its most recent
report of condition so published. In case at any time the Trustee shall cease to
be eligible in accordance with this Section 8.06, the Trustee shall resign
immediately in the manner and with the effect specified in Section 8.07. The
entity serving as Trustee may have normal banking and trust relationships with
the Depositor and its affiliates or the Servicer and its affiliates; provided,
however, that such entity cannot be an affiliate of the Seller, the Depositor or
the Servicer other than the Trustee in its role as successor to the Servicer.

     Section 8.07 Resignation and Removal of the Trustee.

     The Trustee may at any time resign and be discharged from the trusts hereby
created by giving written notice of resignation to the Depositor, the Servicer,
and each Rating Agency not less than 60 days before the date specified in such
notice, when, subject to Section 8.08, such resignation is to take effect, and
acceptance by a successor trustee in accordance with Section 8.08 meeting the
qualifications set forth in Section 8.06. If no successor trustee meeting such
qualifications shall have been so appointed and have accepted appointment within
30 days after the giving of such notice or resignation, the resigning Trustee
may petition any court of competent jurisdiction for the appointment of a
successor trustee.

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     As a condition to the effectiveness of any such resignation, at least 15
calendar days prior to the effective date of such resignation, the Trustee shall
provide (x) written notice to the Depositor of any successor pursuant to this
Section and (y) in writing and in form and substance reasonably satisfactory to
the Depositor, all information reasonably requested by the Depositor in order to
comply with its reporting obligation under Item 6.02 of Form 8-K with respect to
the resignation of the Trustee.

     If at any time (i) the Trustee shall cease to be eligible in accordance
with Section 8.06 and shall fail to resign after written request thereto by the
Depositor, (ii) the Trustee shall become incapable of acting, or shall be
adjudged as bankrupt or insolvent, or a receiver of the Trustee or of its
property shall be appointed, or any public officer shall take charge or control
of the Trustee or of its property or affairs for the purpose of rehabilitation,
conservation or liquidation, (iii)(A) a tax is imposed with respect to the Trust
Fund by any state in which the Trustee or the Trust Fund is located and (B) the
imposition of such tax would be avoided by the appointment of a different
trustee, or (iv) during the period which the Depositor is required to file
Exchange Act Reports with respect to the Trust Fund, the Trustee fails to comply
with its obligations under the last sentence of Section 7.01, the preceding
paragraph, Section 8.09 or Article Eleven and such failure is not remedied
within the lesser of 10 calendar days or such period in which the applicable
Exchange Act Report can be filed timely (without taking into account any
extensions), then, in the case of clauses (i) through (iii), then the Depositor
or the Servicer, or in the case of clause (iv), the Depositor, may remove the
Trustee and appoint a successor trustee by written instrument, in triplicate,
one copy of which shall be delivered to the Trustee, one copy to the Servicer
and one copy to the successor trustee.

     The Holders of Certificates entitled to at least 51% of the Voting Rights
may at any time remove the Trustee and appoint a successor trustee by written
instrument or instruments, in triplicate, signed by such Holders or their
attorneys-in-fact duly authorized, one complete set of which shall be delivered
by the successor Trustee to the Servicer, one complete set to the Trustee so
removed, one complete set to the successor so appointed and one complete set to
the Depositor, together with a written description of the basis for such
removal. As long as any Voting Rights are held by parties other than the Seller,
its Affiliates, or its agents, Voting Rights of Certificates held by the Seller,
its Affiliates or its agents as the Seller shall certify to the Trustee upon any
such entity obtaining such ownership will be excluded from participating in such
voting arrangements, and excluded from determining the 51% threshold. The
successor trustee shall notify each Rating Agency of any removal of the Trustee.

     Any resignation or removal of the Trustee and appointment of a successor
trustee pursuant to this Section 8.07 shall become effective upon acceptance of
appointment by the successor trustee as provided in Section 8.08.

     Section 8.08 Successor Trustee.

     Any successor trustee appointed as provided in Section 8.07 shall execute,
acknowledge and deliver to the Depositor and to its predecessor trustee and the
Servicer an instrument accepting such appointment hereunder and thereupon the
resignation or removal of the predecessor trustee shall become effective and
such successor trustee, without any further act, deed or conveyance, shall
become fully vested with all the rights, powers, duties and obligations of its
predecessor hereunder, with the like effect as if originally named as trustee
herein. The Depositor, the Servicer and the predecessor trustee shall execute
and deliver such instruments and do such other things as may reasonably be
required for more fully and certainly vesting and confirming in the successor
trustee all such rights, powers, duties, and obligations.

     No successor trustee shall accept appointment as provided in this Section
8.08 unless, at the time of its acceptance, the successor trustee is eligible
under Section 8.06 and its appointment does not

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adversely affect the then current rating of the Certificates and has provided to
the Depositor in writing and in form and substance reasonably satisfactory to
the Depositor, all information reasonably requested by the Depositor in order to
comply with its reporting obligation under Item 6.02 of Form 8-K with respect to
a replacement Trustee.

     Upon acceptance of appointment by a successor trustee as provided in this
Section 8.08, the Depositor shall mail notice of the succession of such trustee
hereunder to all Holders of Certificates. If the Depositor fails to mail such
notice within 10 days after acceptance of appointment by the successor trustee,
the successor trustee shall cause such notice to be mailed at the expense of the
Depositor.

     Section 8.09 Merger or Consolidation of the Trustee.

     Any corporation into which the Trustee may be merged or converted or with
which it may be consolidated or any corporation resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any
corporation succeeding to the business of the Trustee, shall be the successor of
the Trustee hereunder, provided that such corporation shall be eligible under
Section 8.06 without the execution or filing of any paper or further act on the
part of any of the parties hereto, anything herein to the contrary
notwithstanding.

     As a condition to the effectiveness of any merger or consolidation, at
least 15 calendar days prior to the effective date of any merger or
consolidation of the Trustee, the Trustee shall provide (x) written notice to
the Depositor of any successor pursuant to this Section and (y) in writing and
in form and substance reasonably satisfactory to the Depositor, all information
reasonably requested by the Depositor in order to comply with its reporting
obligation under Item 6.02 of Form 8-K with respect to a replacement Trustee.

     Section 8.10 Appointment of Co-Trustee or Separate Trustee.

     Notwithstanding any other provisions of this Agreement, at any time, for
the purpose of meeting any legal requirements of any jurisdiction in which any
part of the Trust Fund or property securing any Mortgage Note may at the time be
located, the Servicer and the Trustee acting jointly shall have the power and
shall execute and deliver all instruments to appoint one or more Persons
approved by the Trustee to act as co-trustee or co-trustees jointly with the
Trustee, or separate trustee or separate trustees, of all or any part of the
Trust Fund, and to vest in such Person or Persons, in such capacity and for the
benefit of the Certificateholders, such title to the Trust Fund or any part
thereof, whichever is applicable, and, subject to the other provisions of this
Section 8.10, such powers, duties, obligations, rights and trusts as the
Servicer and the Trustee may consider appropriate. If the Servicer shall not
have joined in such appointment within 15 days after the receipt by it of a
request to do so, or in the case an Event of Default shall have occurred and be
continuing, the Trustee alone shall have the power to make such appointment. No
co-trustee or separate trustee hereunder shall be required to meet the terms of
eligibility as a successor trustee under Section 8.06 and no notice to
Certificateholders of the appointment of any co-trustee or separate trustee
shall be required under Section 8.08.

     Every separate trustee and co-trustee shall, to the extent permitted by
law, be appointed and act subject to the following provisions and conditions:

     (a) To the extent necessary to effectuate the purposes of this Section
8.10, all rights, powers, duties and obligations conferred or imposed upon the
Trustee, except for the obligation of the Trustee under this Agreement to
advance funds on behalf of the Servicer, shall be conferred or imposed upon and
exercised or performed by the Trustee and such separate trustee or co-trustee
jointly (it being understood that such separate trustee or co-trustee is not
authorized to act separately without the Trustee joining in

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such act), except to the extent that under any law of any jurisdiction in which
any particular act or acts are to be performed (whether as Trustee hereunder or
as successor to the Servicer hereunder), the Trustee shall be incompetent or
unqualified to perform such act or acts, in which event such rights, powers,
duties and obligations (including the holding of title to the applicable Trust
Fund or any portion thereof in any such jurisdiction) shall be exercised and
performed singly by such separate trustee or co-trustee, but solely at the
direction of the Trustee;

     (b) No trustee hereunder shall be held personally liable because of any act
or omission of any other trustee hereunder and such appointment shall not, and
shall not be deemed to, constitute any such separate trustee or co-trustee as
agent of the Trustee;

     (c) The Trustee may at any time accept the resignation of or remove any
separate trustee or co-trustee; and

     (d) The Servicer, and not the Trustee, shall be liable for the payment of
reasonable compensation, reimbursement and indemnification to any such separate
trustee or co-trustee.

     Any notice, request or other writing given to the Trustee shall be deemed
to have been given to each of the separate trustees and co-trustees, when and as
effectively as if given to each of them. Every instrument appointing any
separate trustee or co-trustee shall refer to this Agreement and the conditions
of this Article Eight. Each separate trustee and co-trustee, upon its acceptance
of the trusts conferred, shall be vested with the estates or property specified
in its instrument of appointment, either jointly with the Trustee or separately,
as may be provided therein, subject to all the provisions of this Agreement,
specifically including every provision of this Agreement relating to the conduct
of, affecting the liability of, or affording protection to, the Trustee. Every
such instrument shall be filed with the Trustee and a copy thereof given to the
Servicer and the Depositor.

     Any separate trustee or co-trustee may, at any time, constitute the Trustee
its agent or attorney-in-fact, with full power and authority, to the extent not
prohibited by law, to do any lawful act under or in respect of this Agreement on
its behalf and in its name. If any separate trustee or co-trustee shall die,
become incapable of acting, resign or be removed, all of its estates,
properties, rights, remedies and trusts shall vest in and be exercised by the
Trustee, to the extent permitted by law, without the appointment of a new or
successor trustee.

     Section 8.11 Tax Matters.

     It is intended that the assets with respect to which one or more REMIC
elections pertaining to the Trust Fund is to be made, as set forth in the
Preliminary Statement, shall constitute, and that the conduct of matters
relating to such assets shall be such as to qualify such assets as, a "real
estate mortgage investment conduit" as defined in and in accordance with the
REMIC Provisions. In furtherance of such intention, the Trustee covenants and
agrees that it shall act as agent (and the Trustee is hereby appointed to act as
agent) on behalf of each REMIC created under this Agreement and that in such
capacity it shall:

     (a) prepare and file in a timely manner, a U.S. Real Estate Mortgage
Investment Conduit Income Tax Return (Form 1066 or any successor form adopted by
the Internal Revenue Service) with respect to each REMIC created hereunder and
prepare and file with the Internal Revenue Service and applicable state or local
tax authorities income tax or information returns for each taxable year with
respect to each REMIC described in the Preliminary Statement, containing such
information and at the times and in the manner as may be required by the Code or
state or local tax laws, regulations, or rules, and furnish to
Certificateholders the schedules, statements or information at such times and in
such manner as may be required thereby;

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     (b) within thirty days of the Closing Date, furnish to the Internal Revenue
Service, on Forms 8811 or as otherwise may be required by the Code, the name,
title, address, and telephone number of the person that the holders of the
Certificates may contact for tax information relating thereto, together with
such additional information as may be required by such Form, and update such
information at the time or times in the manner required by the Code;

     (c) make an election that each REMIC created under this Agreement be
treated as a REMIC on the federal tax return for its first taxable year (and, if
necessary, under applicable state law);

     (d) prepare and forward to the Certificateholders and to the Internal
Revenue Service and, if necessary, state tax authorities, all information
returns and reports as and when required to be provided to them in accordance
with the REMIC Provisions, including the calculation of any original issue
discount using the Prepayment Assumption;

     (e) provide information necessary for the computation of tax imposed on the
transfer of a Residual Certificate to a Person that is not a Permitted
Transferee, or an agent (including a broker, nominee or other middleman) of a
Person that is not a Permitted Transferee, or a pass-through entity in which a
Person that is not a Permitted Transferee is the record holder of an interest
(the reasonable cost of computing and furnishing such information may be charged
to the Person liable for such tax);

     (f) to the extent that they are under its control, conduct matters relating
to such assets at all times that any Certificates are outstanding so as to
maintain the status as any REMIC created under this Agreement under the REMIC
Provisions;

     (g) not knowingly or intentionally take any action or omit to take any
action that would cause the termination of the REMIC status of any REMIC created
under this Agreement;

     (h) pay, from the sources specified in the third paragraph of this Section
8.11, the amount of any federal or state tax, including prohibited transaction
taxes as described below, imposed on any REMIC before its termination when and
as the same shall be due and payable (but such obligation shall not prevent the
Trustee or any other appropriate Person from contesting any such tax in
appropriate proceedings and shall not prevent the Trustee from withholding
payment of such tax, if permitted by law, pending the outcome of such
proceedings);

     (i) ensure that federal, state or local income tax or information returns
shall be signed by the Trustee or such other person as may be required to sign
such returns by the Code or state or local laws, regulations or rules;

     (j) maintain records relating to each REMIC created under this Agreement,
including the income, expenses, assets, and liabilities thereof and the fair
market value and adjusted basis of the assets determined at such intervals as
may be required by the Code, as may be necessary to prepare the foregoing
returns, schedules, statements or information; and

     (k) as and when necessary and appropriate, represent each REMIC created
under this Agreement in any administrative or judicial proceedings relating to
an examination or audit by any governmental taxing authority, request an
administrative adjustment as to any taxable year of such REMIC, enter into
settlement agreements with any governmental taxing agency, extend any statute of
limitations relating to any tax item of such REMIC, and otherwise act on behalf
of such REMIC in relation to any tax matter or controversy involving it.

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     To enable the Trustee to perform its duties under this Agreement, the
Depositor shall provide to the Trustee within ten days after the Closing Date
all information or data that the Trustee requests in writing and determines to
be relevant for tax purposes to the valuations and offering prices of the
Certificates, including the price, yield, prepayment assumption, and projected
cash flows of the Certificates and the Mortgage Loans. Thereafter, the Depositor
shall provide to the Trustee promptly upon written request therefor any
additional information or data that the Trustee may, from time to time,
reasonably request to enable the Trustee to perform its duties under this
Agreement. The Depositor hereby indemnifies the Trustee for any losses,
liabilities, damages, claims, or expenses of the Trustee arising from any errors
or miscalculations of the Trustee that result from any failure of the Depositor
to provide, or to cause to be provided, accurate information or data to the
Trustee on a timely basis.

     If any tax is imposed on "prohibited transactions" (as defined in section
860F(a)(2) of the Code) of any REMIC created under this Agreement, on the "net
income from foreclosure property" of any REMIC created under this Agreement as
defined in section 860G(c) of the Code, on any contribution to any REMIC created
under this Agreement after the Startup Day pursuant to section 860G(d) of the
Code, or any other tax is imposed, including any minimum tax imposed on any
REMIC created hereunder pursuant to sections 23153 and 24874 of the California
Revenue and Taxation Code, if not paid as otherwise provided for herein, the tax
shall be paid by (i) the Trustee, if any such other tax arises out of or results
from negligence of the Trustee in the performance of any of its obligations
under this Agreement, (ii) the Servicer or the Seller, in the case of any such
minimum tax, if such tax arises out of or results from a breach by the Servicer
or Seller of any of their obligations under this Agreement, (iii) the Seller, if
any such tax arises out of or results from the Seller's obligation to repurchase
a Mortgage Loan pursuant to Section 2.02 or 2.03, or (iv) in all other cases, or
if the Trustee, the Servicer, or the Seller fails to honor its obligations under
the preceding clauses (i), (ii), or (iii), any such tax will be paid with
amounts otherwise to be distributed to the Certificateholders, as provided in
Section 3.09(b).

     The Trustee shall file or cause to be filed with the Internal Revenue
Service, Form 1041 or such other form as may be applicable, and shall furnish or
cause to be furnished to the Holders of the Class L Certificate the Late Payment
Fees that are received, in the time or times and in the manner required by the
Code.

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                                  ARTICLE NINE

                                   TERMINATION

     Section 9.01 Termination upon Liquidation or Purchase of the Mortgage
Loans.

     Subject to Section 9.03, the obligations and responsibilities of the
Depositor, the Servicer, and the Trustee created hereby shall terminate upon the
earlier of

     (a) the purchase by the Servicer of all Mortgage Loans (and REO Properties)
at the price equal to the sum of

          (i) 100% of the Stated Principal Balance of each Mortgage Loan (other
     than in respect of a Delinquent Mortgage Loan or REO Property) plus one
     month's accrued interest thereon at the applicable Adjusted Mortgage Rate
     less any amounts collected by the Servicer representing principal and
     interest due after the related Due Date,

          (ii) the lesser of (x) the appraised value of any Delinquent Mortgage
     Loan or REO Property as determined by the higher of two appraisals
     completed by two independent appraisers selected by the Servicer at the
     expense of the Servicer and (y) the Stated Principal Balance of each such
     Delinquent Mortgage Loan or Mortgage Loan related to such REO Property, in
     each case plus accrued and unpaid interest thereon at the applicable
     Adjusted Net Mortgage Rate and

          (iii) any costs and damages incurred by the Trust Fund in connection
     with any violation by each Mortgage Loan of any predatory or abusive
     lending law and

     (b) the later of

          (i) the maturity or other liquidation (or any Advance with respect
     thereto) of the last Mortgage Loan and the disposition of all REO Property
     and

          (ii) the distribution to Certificateholders of all amounts required to
     be distributed to them pursuant to this Agreement. In no event shall the
     trusts created hereby continue beyond the expiration of 21 years from the
     death of the survivor of the descendants of Joseph P. Kennedy, the late
     Ambassador of the United States to the Court of St. James's, living on the
     date of this Agreement.

     The right to purchase all Mortgage Loans and REO Properties pursuant to
clause (a) above shall be conditioned upon the aggregate Stated Principal
Balance of those Mortgage Loans, at the time of any such repurchase, aggregating
less than ten percent (10%) of the aggregate Stated Principal Balance of the
Mortgage Loans as of the Cut-off Date. The Servicer shall effect any such
repurchase by depositing the purchase price, as calculated above, as of the
month preceding the date on which such purchase price shall be distributed to
Certificateholders into the Certificate Account.

     The Grantor Trust with respect to the Late Payment Fees shall terminate
automatically upon termination of the Trust Fund.

     Section 9.02 Final Distribution on the Certificates.

     If on any Determination Date the Servicer determines that there are no
Outstanding Mortgage Loans and no other funds or assets in the Trust Fund other
than the funds in the Certificate Account, the

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Servicer shall direct the Trustee promptly to send a final distribution notice
to each Certificateholder. If the Servicer elects to terminate the Trust Fund
pursuant to clause (a) of Section 9.01, no later than the 15th day of the month
preceding the month of the final Distribution Date the Servicer shall notify the
Depositor and the Trustee of the date the Servicer intends to terminate the
Trust Fund and of the applicable repurchase price of the Mortgage Loans and REO
Properties.

     Notice of any termination of the Trust Fund specifying the Distribution
Date on which Certificateholders may surrender their Certificates for payment of
the final distribution and cancellation shall be given promptly by the Trustee
by letter to Certificateholders mailed not earlier than the 15th day and not
later than the last day of the month next preceding the month of such final
distribution. Any such notice shall specify (a) the Distribution Date upon which
final distribution on the Certificates will be made upon presentation and
surrender of Certificates at the office therein designated, (b) the amount of
such final distribution, (c) the location of the office or agency at which such
presentation and surrender must be made, and (d) that the Record Date otherwise
applicable to the Distribution Date is not applicable, distributions being made
only upon presentation and surrender of the Certificates at the office therein
specified. The Servicer will give such notice to each Rating Agency at the time
such notice is given to Certificateholders.

     If this notice is given, the Servicer shall cause all funds in the
Certificate Account to be remitted to the Trustee for deposit in the
Distribution Account on the Business Day before the applicable Distribution Date
in an amount equal to the final distribution in respect of the Certificates.
Upon such final deposit with respect to the Trust Fund and the receipt by the
Trustee of a Request for Release therefor, the Trustee shall promptly release to
the Servicer the Mortgage Files for the Mortgage Loans.

     Upon presentation and surrender of the Certificates, the Trustee shall
cause to be distributed to the Certificateholders of each Class, in each case on
the final Distribution Date and in the order set forth in Section 4.02, in
proportion to their respective Percentage Interests, with respect to
Certificateholders of the same Class, an amount equal to (i) as to each Class of
Regular Certificates, its Certificate Balance plus for each such Class accrued
interest thereon (or on their Notional Amount, if applicable) in the case of an
interest-bearing Certificate and (ii) as to the Residual Certificates, any
amount remaining on deposit in the Distribution Account (other than the amounts
retained to meet claims) after application pursuant to clause (i) above.
Notwithstanding the reduction of the Certificate Balance of any Class of
Certificates to zero, such Class will be outstanding hereunder solely for the
purpose of receiving distributions and for no other purpose until the
termination of the respective obligations and responsibilities of the Depositor,
the Servicer and the Trustee hereunder in accordance with Article Nine. The
foregoing provisions are intended to distribute to each Class of Regular
Certificates any accrued and unpaid interest and principal to which they are
entitled based on the Pass-Through Rates and actual Class Certificate Balances
or Notional Amounts set forth in the Preliminary Statement upon liquidation of
the Trust Fund.

     If any affected Certificateholder does not surrender its Certificates for
cancellation within six months after the date specified in the above mentioned
written notice, the Trustee shall give a second written notice to the remaining
Certificateholders to surrender their Certificates for cancellation and receive
the final distribution with respect thereto. If within six months after the
second notice all the applicable Certificates shall not have been surrendered
for cancellation, the Trustee may take appropriate steps, or may appoint an
agent to take appropriate steps, to contact the remaining Certificateholders
concerning surrender of their Certificates, and the cost thereof shall be paid
out of the funds and other assets which remain a part of the Trust Fund. If
within one year after the second notice all Certificates shall not have been
surrendered for cancellation, then the Class A-R Certificateholders shall be
entitled to all unclaimed funds and other assets of the Trust Fund which remain
subject hereto.

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     Section 9.03 Additional Termination Requirements.

     (a) If the Servicer exercises its purchase option with respect to the
Mortgage Loans as provided in Section 9.01, the Trust Fund shall be terminated
in accordance with the following additional requirements, unless the Trustee has
been supplied with an Opinion of Counsel, at the expense of the Servicer, to the
effect that the failure to comply with the requirements of this Section 9.03
will not (i) result in the imposition of taxes on "prohibited transactions" on
any REMIC created hereunder as defined in section 860F of the Code, or (ii)
cause any REMIC created under this Agreement to fail to qualify as a REMIC at
any time that any Certificates are outstanding:

     (b) The Trustee shall sell all of the assets of the Trust Fund to the
Servicer, and, within 90 days of such sale, shall distribute to the
Certificateholders the proceeds of such sale in complete liquidation of each
REMIC created under this Agreement.

     (c) The Trustee shall attach a statement to the final federal income tax
return for each REMIC created under this Agreement stating that pursuant to
Treasury Regulation ss. 1.860F-1, the first day of the 90-day liquidation period
for such REMIC was the date on which the Trustee sold the assets of the Trust
Fund to the Servicer.

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                                   ARTICLE TEN

                            MISCELLANEOUS PROVISIONS

     Section 10.01 Amendment.

     This Agreement may be amended from time to time by the Depositor, the
Servicer and the Trustee without the consent of any of the Certificateholders
(i) to cure any ambiguity or mistake, (ii) to correct any defective provision in
this Agreement or to supplement any provision in this Agreement which may be
inconsistent with any other provision in this Agreement, (iii) to conform this
Agreement to the Prospectus Supplement, (iv) to add to the duties of the
Depositor, the Seller or the Servicer, (v) to modify, alter, amend, add to or
rescind any of the terms or provisions contained in this Agreement to comply
with any rules or regulations promulgated by the Securities and Exchange
Commission from time to time, (vi) to add any other provisions with respect to
matters or questions arising under this Agreement, or (vii) to modify, alter,
amend, add to, or rescind any of the terms or provisions contained in this
Agreement.

     No action pursuant to clauses (v), (vi) or (vii) above may, as evidenced by
an Opinion of Counsel (which Opinion of Counsel shall not be an expense of the
Trustee or the Trust Fund), adversely affect in any material respect the
interests of any Certificateholder. The amendment shall not be deemed to
adversely affect in any material respect the interests of the Certificateholders
if the Person requesting the amendment obtains a letter from each Rating Agency
stating that the amendment would not result in the downgrading, qualification or
withdrawal of the respective ratings then assigned to the Certificates. Any such
letter in and of itself will not represent a determination as to the materiality
of any amendment and will represent a determination only as to the credit issues
affecting any rating. Each party to this Agreement agrees that it will cooperate
with each other party in amending this Agreement pursuant to clause (v) above.

     The Trustee, the Depositor, and the Servicer also may at any time and from
time to time amend this Agreement without the consent of the Certificateholders
to modify, eliminate or add to any of its provisions to the extent necessary or
helpful to (i) maintain the qualification of any REMIC created under this
Agreement as a REMIC under the Code, (ii) avoid or minimize the risk of the
imposition of any tax on any REMIC created under this Agreement pursuant to the
Code that would be a claim at any time before the final redemption of the
Certificates, or (iii) comply with any other requirements of the Code, if the
Trustee has been provided an Opinion of Counsel, which opinion shall be an
expense of the party requesting such opinion but in any case shall not be an
expense of the Trustee or the Trust Fund, to the effect that the action is
necessary or helpful for one of the foregoing purposes.

     This Agreement may also be amended from time to time by the Depositor, the
Servicer, and the Trustee with the consent of the Holders of Certificates
evidencing Percentage Interests aggregating not less than 51% of each Class of
Certificates adversely affected thereby for the purpose of adding any provisions
to or changing in any manner or eliminating any of the provisions of this
Agreement or of modifying in any manner the rights of the Holders of
Certificates. As long as any Voting Rights are held by parties other than the
Seller, its Affiliates, or its agents, as the Seller shall certify to the
Trustee upon any such entity obtaining such ownership, Voting Rights of
Certificates held by the Seller, its Affiliates or its agents will be excluded
from participating in such voting arrangements, and excluded from determining
the 51% threshold. No amendment shall

     (i) reduce in any manner the amount of, or delay the timing of, payments
required to be distributed on any Certificate without the consent of the Holder
of such Certificate,

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     (ii) amend, modify, add to, rescind, or alter in any respect Section 10.13,
notwithstanding any contrary provision of this Agreement, without the consent of
the Holders of Certificates evidencing Percentage Interests aggregating not less
than 66 2/3% (provided, however, that no Certificates held by the Seller, the
Depositor or any Affiliate thereof shall be given effect for the purpose of
calculating any such aggregation of Percentage Interests), or

     (iii) reduce the aforesaid percentages of Certificates the Holders of which
are required to consent to any such amendment, without the consent of the
Holders of all such Certificates then outstanding.

     Notwithstanding any contrary provision of this Agreement, the Trustee shall
not consent to any amendment to this Agreement unless (i) it shall have first
received an Opinion of Counsel, which opinion shall not be an expense of the
Trustee or the Trust Fund, to the effect that such amendment will not cause the
imposition of any tax on any REMIC created under this Agreement or the
Certificateholders or cause any REMIC created hereunder to fail to qualify as a
REMIC at any time that any Certificates are outstanding and (ii) because the
Trust Fund is required to be a Qualifying Special Purpose Entity (as that term
is defined in Statement of Financial Accounting Standards No. 140 ("SFAS 140"),
in order for the Seller to continue to account for the transfer of the Mortgage
Loans under this Agreement as a sale under SFAS 140, prior to the parties hereto
entering into such an amendment, the Trustee shall receive an Officer's
Certificate, which shall not be an expense of the Trustee or the Trust Fund, to
the effect that such amendment would not "significantly change" (within the
meaning of SFAS 140) the permitted activities of the Trust Fund so as to cause
the Trust Fund to fail to qualify as a Qualifying Special Purpose Entity.

     Promptly after the execution of any amendment to this Agreement requiring
the consent of Certificateholders, the Trustee shall furnish written
notification of the substance or a copy of such amendment to each
Certificateholder and each Rating Agency.

     It shall not be necessary for the consent of Certificateholders under this
Section 10.01 to approve the particular form of any proposed amendment, but it
shall be sufficient if such consent shall approve the substance thereof. The
manner of obtaining such consents and of evidencing the authorization of the
execution thereof by Certificateholders shall be subject to such reasonable
regulations as the Trustee may prescribe.

     Nothing in this Agreement shall require the Trustee to enter into an
amendment without receiving an Opinion of Counsel (which Opinion shall not be an
expense of the Trustee or the Trust Fund), satisfactory to the Trustee that (i)
such amendment is permitted and is not prohibited by this Agreement and that all
requirements for amending this Agreement have been complied with; and (ii)
either (A) the amendment does not adversely affect in any material respect the
interests of any Certificateholder or (B) the conclusion set forth in the
preceding clause (A) is not required to be reached pursuant to this Section
10.01.

     Section 10.02 Recordation of Agreement; Counterparts.

     This Agreement is subject to recordation in all appropriate public offices
for real property records in all the counties or other comparable jurisdictions
in which any or all of the properties subject to the Mortgages are situated, and
in any other appropriate public recording office or elsewhere, such recordation
to be effected by the Servicer at its expense, but only upon receipt of an
Opinion of Counsel to the effect that such recordation materially and
beneficially affects the interests of the Certificateholders.

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     For the purpose of facilitating the recordation of this Agreement as herein
provided and for other purposes, this Agreement may be executed simultaneously
in any number of counterparts, each of which counterparts shall be deemed to be
an original, and such counterparts shall constitute but one and the same
instrument.

     Section 10.03 Governing Law.

     THIS AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE
SUBSTANTIVE LAWS OF THE STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO
BE PERFORMED IN THE STATE OF NEW YORK AND THE OBLIGATIONS, RIGHTS AND REMEDIES
OF THE PARTIES HERETO AND THE CERTIFICATEHOLDERS SHALL BE DETERMINED IN
ACCORDANCE WITH SUCH LAWS.

     Section 10.04 Intention of Parties.

     It is the express intent of the parties hereto that the conveyance (i) of
the Mortgage Loans by the Seller to the Depositor and (ii) of the Trust Fund by
the Depositor to the Trustee each be, and be construed as, an absolute sale
thereof. It is, further, not the intention of the parties that such conveyances
be deemed a pledge thereof. However, if, notwithstanding the intent of the
parties, the assets are held to be the property of the Seller or Depositor, as
the case may be, or if for any other reason this Agreement is held or deemed to
create a security interest in either such assets, then (i) this Agreement shall
be deemed to be a security agreement within the meaning of the UCC and (ii) the
conveyances provided for in this Agreement shall be deemed to be an assignment
and a grant (i) by the Seller to the Depositor or (ii) by the Depositor to the
Trustee, for the benefit of the Certificateholders, of a security interest in
all of the assets transferred, whether now owned or hereafter acquired.

     The Seller and the Depositor for the benefit of the Certificateholders
shall, to the extent consistent with this Agreement, take such actions as may be
necessary to ensure that, if this Agreement were deemed to create a security
interest in the Trust Fund, such security interest would be deemed to be a
perfected security interest of first priority under applicable law and will be
maintained as such throughout the term of the Agreement. The Depositor shall
arrange for filing any Uniform Commercial Code continuation statements in
connection with any security interest granted or assigned to the Trustee for the
benefit of the Certificateholders.

     Section 10.05 Notices.

     (a) The Trustee shall use its best efforts to promptly provide notice to
each Rating Agency with respect to each of the following of which it has actual
knowledge:

     1. Any material change or amendment to this Agreement;

     2. The occurrence of any Event of Default that has not been cured;

     3. The resignation or termination of the Servicer or the Trustee and the
appointment of any successor;

     4. The repurchase or substitution of Mortgage Loans pursuant to Section
2.03; and

     5. The final distribution to Certificateholders.

     In addition, the Trustee shall promptly furnish to each Rating Agency
copies of the following:

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     1. Each report to Certificateholders described in Section 4.06;

     2. Each annual statement as to compliance described in Section 3.17;

     3. Each annual independent public accountants' servicing report described
in Section 11.07; and

     4. Any notice of a purchase of a Mortgage Loan pursuant to Section 2.02,
2.03 or 3.11.

     (b) All directions, demands and notices hereunder shall be in writing and
shall be deemed to have been duly given when delivered to (a) in the case of the
Depositor, IndyMac MBS, Inc., 155 North Lake Avenue, Pasadena, California 91101,
Attention: Secondary Marketing, Transaction Management; (b) in the case of the
Servicer, IndyMac Bank, F.S.B., 888 East Walnut Street, Pasadena, California
91101-7211, Attention: Secondary Marketing, Transaction Management or such other
address as may be hereafter furnished to the Depositor and the Trustee by the
Servicer in writing; (c) in the case of the Trustee to the Corporate Trust
Office, Deutsche Bank National Trust Company, 1761 East St. Andrew Place, Santa
Ana, California 92705-4934, Attention: Trust Administration IN07J1, Series
2007-A1, or such other address as the Trustee may hereafter furnish to the
Depositor or Servicer and (d) in the case of each of the Rating Agencies, the
address specified therefor in the definition corresponding to the name of such
Rating Agency. Notices to Certificateholders shall be deemed given when mailed,
first class postage prepaid, to their respective addresses appearing in the
Certificate Register.

     Section 10.06 Severability of Provisions.

     If any one or more of the covenants, agreements, provisions or terms of
this Agreement shall be for any reason whatsoever held invalid, then such
covenants, agreements, provisions or terms shall be deemed severable from the
remaining covenants, agreements, provisions or terms of this Agreement and shall
in no way affect the validity or enforceability of the other provisions of this
Agreement or of the Certificates or the rights of the Holders thereof.

     Section 10.07 Assignment.

     Notwithstanding anything to the contrary contained in this Agreement,
except as provided in Section 6.02, this Agreement may not be assigned by the
Servicer without the prior written consent of the Trustee and Depositor.

     Section 10.08 Limitation on Rights of Certificateholders.

     The death or incapacity of any Certificateholder shall not operate to
terminate this Agreement or the trust created by this Agreement, nor entitle
such Certificateholder's legal representative or heirs to claim an accounting or
to take any action or commence any proceeding in any court for a petition or
winding up of the trust created hereby, or otherwise affect the rights,
obligations and liabilities of the parties to this Agreement or any of them.

     No Certificateholder shall have any right to vote (except as provided in
this Agreement) or in any manner otherwise control the operation and management
of the Trust Fund, or the obligations of the parties to this Agreement, nor
shall anything herein set forth or contained in the terms of the Certificates be
construed so as to constitute the Certificateholders from time to time as
partners or members of an association; nor shall any Certificateholder be under
any liability to any third party because of any action taken by the parties to
this Agreement pursuant to any provision of this Agreement.

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     No Certificateholder shall have any right by virtue or by availing itself
of any provisions of this Agreement to institute any suit, action or proceeding
in equity or at law upon or under or with respect to this Agreement, unless such
Holder previously shall have given to the Trustee a written notice of an Event
of Default and of the continuance thereof, as provided in this Agreement, and
unless the Holders of Certificates evidencing not less than 25% of the Voting
Rights evidenced by the Certificates shall also have made written request to the
Trustee to institute such action, suit or proceeding in its own name as Trustee
hereunder and shall have offered to the Trustee such reasonable indemnity as it
may require against the costs, expenses, and liabilities to be incurred therein
or thereby, and the Trustee, for 60 days after its receipt of such notice,
request and offer of indemnity shall have neglected or refused to institute any
such action, suit or proceeding; it being understood and intended, and being
expressly covenanted by each Certificateholder with every other
Certificateholder and the Trustee, that no one or more Holders of Certificates
shall have any right in any manner whatever by virtue or by availing itself or
themselves of any provisions of this Agreement to affect, disturb or prejudice
the rights of the Holders of any other of the Certificates, or to obtain or seek
to obtain priority over or preference to any other such Holder or to enforce any
right under this Agreement, except in the manner herein provided and for the
common benefit of all Certificateholders. For the protection and enforcement of
this Section 10.08, each Certificateholder and the Trustee shall be entitled to
any relief that can be given either at law or in equity. As long as any Voting
Rights are held by parties other than the Seller, its Affiliates, or its agents,
Voting Rights of Certificates held by the Seller, its Affiliates or its agents
as the Seller shall certify to the Trustee upon any such entity obtaining such
ownership will be excluded from participating in such voting arrangements, and
excluded from determining the 25% threshold.

     Section 10.09 Inspection and Audit Rights.

     The Servicer agrees that, on reasonable prior notice, it will permit any
representative of the Depositor or the Trustee during the Servicer's normal
business hours, to examine all the books of account, records, reports and other
papers of the Servicer relating to the Mortgage Loans, to make copies and
extracts therefrom, to cause such books to be audited by independent certified
public accountants selected by the Depositor or the Trustee and to discuss its
affairs, finances and accounts relating to the Mortgage Loans with its officers,
employees and independent public accountants (and by this provision the Servicer
hereby authorizes said accountants to discuss with such representative such
affairs, finances and accounts), all at such reasonable times and as often as
may be reasonably requested. Any out-of-pocket expense incident to the exercise
by the Depositor or the Trustee of any right under this Section 10.09 shall be
borne by the party requesting such inspection; all other such expenses shall be
borne by the Servicer.

     Section 10.10 Certificates Nonassessable and Fully Paid.

     It is the intention of the Depositor that Certificateholders shall not be
personally liable for obligations of the Trust Fund, that the interests in the
Trust Fund represented by the Certificates shall be nonassessable for any reason
whatsoever, and that the Certificates, upon due authentication thereof by the
Trustee pursuant to this Agreement, are and shall be deemed fully paid.

     Section 10.11 Official Record.

     The Seller agrees that this Agreement is and shall remain at all times
before the time at which this Agreement terminates an official record of the
Seller as referred to in Section 13(e) of the Federal Deposit Insurance Act.

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     Section 10.12 Protection of Assets.

     (a) Except for transactions and activities entered into in connection with
the securitization that is the subject of this Agreement, the trust created by
this Agreement is not authorized and has no power to:

     (1) borrow money or issue debt;

     (2) merge with another entity, reorganize, liquidate or sell assets;

     (3) engage in any business or activities.

     (b) Each party to this Agreement agrees that it will not file an
involuntary bankruptcy petition against the Trustee or the Trust Fund or
initiate any other form of insolvency proceeding until after the Certificates
have been paid in full.

     Section 10.13 Qualifying Special Purpose Entity.

     Notwithstanding any contrary provision of this Agreement, the Trust Fund
shall not hold any property or engage in any activity that would disqualify the
Trust Fund from being a qualifying special purpose entity under generally
accepted accounting principles.

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                                 ARTICLE ELEVEN

                             EXCHANGE ACT REPORTING

     Section 11.01 Filing Obligations.

     The Servicer, the Trustee and the Seller shall reasonably cooperate with
the Depositor in connection with the satisfaction of the Depositor's reporting
requirements under the Exchange Act with respect to the Trust Fund. In addition
to the information specified below, if so requested by the Depositor for the
purpose of satisfying its reporting obligation under the Exchange Act, the
Servicer, the Trustee and the Seller shall provide the Depositor with (a) such
information which is available to such Person without unreasonable effort or
expense and within such timeframe as may be reasonably requested by the
Depositor to comply with the Depositor's reporting obligations under the
Exchange Act and (b) to the extent such Person is a party (and the Depositor is
not a party) to any agreement or amendment required to be filed, copies of such
agreement or amendment in EDGAR-compatible form.

     Section 11.02 Form 10-D Filings.

     (a) In accordance with the Exchange Act, unless no reporting obligation
under the Exchange Act exists at such time with respect to the Trust Fund, the
Trustee shall prepare for filing and file within 15 days after each Distribution
Date (subject to permitted extensions under the Exchange Act) with the
Commission with respect to the Trust Fund, a Form 10-D with copies of the
Monthly Report and, to the extent delivered to the Trustee, no later than five
calendar days following the Distribution Date, such other information identified
by the Depositor or the Servicer, in writing, to be filed with the Commission
(such other information, the "Additional Designated Information"). If the
Depositor or Servicer directs that any Additional Designated Information is to
be filed with any Form 10-D, the Depositor or Servicer, as the case may be,
shall specify the Item on Form 10-D to which such information is responsive and,
with respect to any Exhibit to be filed on Form 10-D, the Exhibit number. Any
information to be filed on Form 10-D shall be delivered to the Trustee in
EDGAR-compatible form or as otherwise agreed upon by the Trustee and the
Depositor or the Servicer, as the case may be, at the Depositor's expense, and
any necessary conversion to EDGAR-compatible format will be at the Depositor's
expense. At the reasonable request of, and in accordance with the reasonable
directions of, the Depositor or the Servicer, subject to the two preceding
sentences, the Trustee shall prepare for filing and file an amendment to any
Form 10-D previously filed with the Commission with respect to the Trust Fund.
The Depositor shall sign the Form 10-D filed on behalf of the Trust Fund.

     The Trustee shall prepare each Form 10-D and, no later than five Business
Days prior to the date on which such Form 10-D is required to be filed, deliver
a copy of such Form 10-D to the Depositor for review. No later than the Business
Day following the receipt thereof, the Depositor shall notify the Trustee of any
changes to be made to the Form 10-D. The Trustee shall make any changes thereto
requested by the Depositor and deliver the final Form 10-D to the Depositor for
signature no later than three Business Days prior to the date on which such Form
10-D must be filed by the Trustee in accordance with this Section 11.02. The
Depositor shall execute the final Form 10-D and deliver the same to the Trustee
via electronic mail (DBSEC.Notifications@db.com) or facsimile no later than the
Business Day following receipt of the same (which, unless not received within
such time frame from the Trustee, shall be no later than two Business Days prior
to the date on which the Form 10-D is required to be filed), with an original
executed hard copy to follow by overnight courier.

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     (b) No later than each Distribution Date, any party responsible for
providing Additional Designated Information shall notify the Depositor and the
Trustee of any Form 10-D Disclosure Item, together with a description of any
such Form 10-D Disclosure Item in form and substance reasonably acceptable to
the Depositor. In addition to such information as the Servicer and the Trustee
are obligated to provide pursuant to other provisions of this Agreement, if so
requested by the Depositor, each of the Servicer and the Trustee shall provide
such information which is available to the Servicer and the Trustee, as
applicable, without unreasonable effort or expense regarding the performance or
servicing of the Mortgage Loans (in the case of the Trustee, based on the
information provided by the Servicer) as is reasonably required to facilitate
preparation of distribution reports in accordance with Item 1121 of Regulation
AB. Such information shall be provided concurrently with the Remittance Reports
in the case of the Servicer and the Monthly Statement in the case of the
Trustee, commencing with the first such report due not less than five Business
Days following such request.

     (c) The Trustee shall not have any responsibility to file any items (other
than those generated by it) that have not been received in a format suitable (or
readily convertible into a format suitable) for electronic filing via the EDGAR
system and shall not have any responsibility to convert any such items to such
format (other than those items generated by it or that are readily convertible
to such format). The Trustee shall have no liability to the Certificateholders,
the Trust Fund, the Servicer or the Depositor with respect to any failure to
properly prepare or file any of Form 10-D to the extent that such failure is not
the result of any negligence, bad faith or willful misconduct on its part. The
Trustee will not have any duty to verify the accuracy or sufficiency of any
information to be included in any Form 10-D not provided by it.

     (d) The Trustee shall have no liability with respect to any failure to
properly prepare and file such periodic reports resulting from or relating to
the Trustee's inability or failure to obtain any information not resulting from
its own negligence or willful misconduct.

     Section 11.03 Form 8-K Filings.

     The Servicer shall prepare and file on behalf of the Trust Fund any Form
8-K required by the Exchange Act. Each Form 8-K must be signed by the Servicer.
Any reporting party identified on Exhibit T shall promptly notify the Depositor
and the Servicer (if the notifying party is not the Servicer), but in no event
later than one (1) Business Day after its occurrence, of any Reportable Event of
which it has actual knowledge. Each Person shall be deemed to have actual
knowledge of any such event to the extent that it relates to such Person or any
action or failure to act by such Person.

     Section 11.04 Form 10-K Filings.

     Prior to (x) March 31, 2008 and (y) unless and until a Form 15 Suspension
Notice shall have been filed, March 31st of each year thereafter (or, in either
case, such earlier date as may be required by the Exchange Act), the Trustee
shall, subject to the provisions of this Section 11.04, file a Form 10-K, with
respect to the Trust Fund. The Trustee shall prepare and file on behalf of the
Trust Fund a Form 10-K, in form and substance as required by the Exchange Act.
The Trustee shall prepare each Form 10-K and, no later than 5 Business Days
prior to the date on which such Form 10-K is required to be filed, deliver a
copy of such Form 10-K to the Depositor for review. No later than the Business
Day following the receipt thereof, the Depositor shall notify the Trustee of any
changes to be made to the Form 10-K. The Trustee shall make any changes thereto
requested by the Depositor and deliver the final Form 10-K to the Depositor for
signature no later than three Business Days prior to the date on which such Form
10-K must be filed by the Trustee in accordance with this Section 11.04. The
Depositor shall execute the final Form 10-K and deliver the same to the Trustee
via electronic mail (DBSEC.Notifications@db.com) or facsimile no later than
Business Day following receipt of the same (which, unless not received within
such time frame from the Trustee, shall be no later than two Business Days prior
to the date on which the Form

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10-K is required to be filed), with an original executed hard copy to follow by
overnight mail. Such Form 10-K shall include the Assessment of Compliance,
Attestation Report, Annual Compliance Statements and other documentation
provided by the Servicer pursuant to Sections 3.17 and 11.07, a certification in
the form attached hereto as Exhibit O-1 (the "Depositor Certification"), which
shall be signed by the senior officer of the Depositor in charge of
securitization, and an accountant's report described under Section 11.07. Each
Form 10-K shall also include any Sarbanes-Oxley Certification required to be
included therewith, as described in Section 11.05.

     If the Item 1119 Parties listed on Exhibit T have changed since the Closing
Date, no later than March 1 of each year, the Depositor shall provide each of
the Servicer and the Trustee via electronic mail (DBSEC.Notifications@db.com)
with an updated Exhibit T setting forth the Item 1119 Parties.

     As to each item of information required to be included in any Form 10-D,
Form 8-K or Form 10-K, the Trustee's or Depositor's obligation to include the
information in the applicable report is subject to receipt from the entity that
is indicated in Exhibit Q as the responsible party for providing that
information, if other than the Trustee or the Depositor, as applicable, as and
when required as described above. Each of the Trustee, the Servicer and the
Depositor, as applicable, hereby agree to notify and provide to the Trustee and
the Depositor all information that is required to be included in any Form 10-D,
Form 8-K or Form 10-K, with respect to which that entity is indicated in Exhibit
Q as the responsible party for providing that information. In the case of
information to be included in the From 10-D, such information shall be delivered
to the Trustee (with a copy to the Depositor) no later than no later than 5
calendar days following each Distribution Date. In the case of information to be
included in the Form 8-K, such information shall be delivered to the Depositor
no later than no later 2 Business Days following the occurrence of a reportable
event. In the case of information to be included in the From 10-K, such
information, other than the documentation provided pursuant to Sections 3.17 and
11.07, shall be delivered to the Trustee no later than (x) March 1, 2008 (with a
15 day cure period) and (y) unless and until a Form 15 Suspension Notice shall
have been filed, March 1st of each year thereafter. The Servicer shall be
responsible for determining the pool concentration applicable to any subservicer
or originator at any time, for purposes of disclosure as required by Items 1117
and 1119 of Regulation AB. The Trustee shall provide electronic or paper copies
of all Form 10-D, 8-K and 10-K filings free of charge to any Certificateholder
upon request.

     The Trustee shall sign a certification (in the form attached hereto as
Exhibit O-2) for the benefit of the Depositor and its officers, directors and
Affiliates. The Trustee's certification shall be delivered to the Depositor by
no later than March 18th of each year (or if such day is not a Business Day, the
immediately preceding Business Day) and the Depositor shall deliver the
Depositor Certification to the Trustee for filing no later than March 20th of
each year (or if such day is not a Business Day, the immediately preceding
Business Day).

     The Trustee shall indemnify and hold harmless the Depositor and its
officers, directors and Affiliates from and against any losses, damages,
penalties, fines, forfeitures, reasonable and necessary legal fees and related
costs, judgments and other costs and expenses arising out of or based upon (i) a
breach of the Trustee's obligations under this Section 11.04 and Section 11.07
or (ii) any material misstatement or omission contained in any information
provided by the Trustee including, without limitation, in the certification
provided by the Trustee in the form of Exhibit O-2 or the assessment of
compliance provided pursuant to Section 11.07. If the indemnification provided
for herein is unavailable or insufficient to hold harmless the Depositor, then
the Trustee, in connection with (i) a breach of the Trustee's obligations under
this Section 11.04 or Section 11.07 or (ii) any material misstatement or
omission contained in any information provided by the Trustee including, without
limitation, in the certification provided by the Trustee in the form of Exhibit
O-2, or in the assessment of compliance or attestation report provided pursuant
to Section 11.07, agrees that it shall contribute to the amount paid or

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payable by the Depositor as a result of the losses, claims, damages or
liabilities of the Depositor in such proportion as is appropriate to reflect the
relative fault of the Depositor on the one hand and the Trustee on the other.
This indemnification shall survive the termination of this Agreement or the
termination of any party to this Agreement.

     The Servicer shall indemnify and hold harmless the Depositor, the Trustee
and their respective officers, directors and Affiliates from and against any
actual losses, damages, penalties, fines, forfeitures, reasonable and necessary
legal fees and related costs, judgments and other costs and expenses that such
Person may sustain based upon (i) a breach of the Servicer's obligations under
Sections 3.17, 11.07 or 11.04 or (ii) any material misstatement or omission
contained in any information provided by the Servicer including, without
limitation, in the information provided pursuant to Sections 3.17 and 11.07.
This indemnification shall survive the termination of this Agreement or the
termination of any party to this Agreement.

     The Depositor shall indemnify and hold harmless the Servicer, the Trustee
and their respective officers, directors and Affiliates from and against any
actual losses, damages, penalties, fines, forfeitures, reasonable and necessary
legal fees and related costs, judgments and other costs and expenses that such
Person may sustain based upon (i) a breach of the Depositor's obligations under
this Section 11.04 or (ii) any material misstatement or omission contained in
any information provided by the Depositor.

     The Trustee will have no duty or liability to verify the accuracy or
sufficiency of any information not prepared by it included in any Form 10-D,
Form 10-K or Form 8-K. The Trustee shall have no liability with respect to any
failure to properly prepare or file any Form 10-D or Form 10-K resulting from or
relating to the Trustee's inability or failure to receive any information in a
timely manner from the party responsible for delivery of such information. The
Trustee shall have no liability with respect to any failure to properly file any
Form 10-D or 10-K resulting from or relating to the Depositor's failure to
timely comply with the provisions of this section. Nothing herein shall be
construed to require the Trustee or any officer, director or Affiliate thereof
to sign any Form 10-D, Form 10-K or Form 8-K. Copies of all reports filed by the
Trustee under the Exchange Act shall be sent to the Depositor electronically or
at the address set forth in Section 10.05. Fees and expenses incurred by the
Trustee in connection with this Section 11.04 shall not be reimbursable from the
Trust Fund.

     Upon any filing with the Commission, the Trustee shall promptly deliver to
the Depositor a copy of any executed report, statement or information.

     To the extent that, following the Closing Date, the Depositor certifies
that reports and certifications differing from those required under this Section
11.04 are necessary to comply with the reporting requirements under the Exchange
Act, the parties hereto hereby agree that each will reasonably cooperate to
amend the provisions of this Section 11.04 in order to comply with such amended
reporting requirements and such amendment of this Section 11.04. Any such
amendment may result in the reduction of the reports executed by and filed on
behalf of the Depositor under the Exchange Act. Notwithstanding the foregoing,
the Trustee shall not be obligated to enter into any amendment pursuant to this
Section that adversely affects its obligations and immunities under this
Agreement.

     Each of the parties acknowledges and agrees that the purpose of Sections
3.17, 11.07 and this Section 11.04 of this Agreement is to facilitate compliance
by the Depositor with the provisions of Regulation AB. Therefore, each of the
parties agree that (a) the obligations of the parties hereunder shall be
interpreted in such a manner as to accomplish that purpose, (b) the parties'
obligations hereunder will be supplemented and modified as necessary to be
consistent with any such amendments, interpretive advice or guidance in respect
of the requirements of Regulation AB, (c) the parties shall comply with
reasonable requests made by the Depositor for delivery of additional or
different information as the

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Depositor may determine in good faith is necessary to comply with the provisions
of Regulation AB, and (d) no amendment of this Agreement shall be required to
effect any such changes in the parties' obligations as are necessary to
accommodate evolving interpretations of the provisions of Regulation AB.

     Section 11.05 Sarbanes-Oxley Certification.

     Each Form 10-K shall include a certification (the "Sarbanes-Oxley
Certification") required by Rules 13a-14(d) and 15d-14(d) under the Exchange Act
(pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 and the rules and
regulations of the Commission promulgated thereunder (including any
interpretations thereof by the Commission's staff)). No later than March 15 of
each year, beginning in 2008, the Servicer and the Trustee shall (unless such
person is the Certifying Person), and the Servicer shall cause each Reporting
Subcontractor and the Trustee shall cause each Reporting Subcontractor to,
provide to the Person who signs the Sarbanes-Oxley Certification (the
"Certifying Person") a certification (each, a "Performance Certification"), in
the form attached hereto as Exhibit R on which the Certifying Person, the entity
for which the Certifying Person acts as an officer, and such entity's officers,
directors and Affiliates (collectively with the Certifying Person,
"Certification Parties") can reasonably rely. The senior officer in charge of
the servicing function of the Servicer shall serve as the Certifying Person on
behalf of the Trust Fund. Neither the Servicer nor the Depositor will request
delivery of a certification under this clause unless the Trustee is required
under the Exchange Act to file an annual report on Form 10-K with respect to the
Trust Fund. In the event that prior to the filing date of the Form 10-K in March
of each year, the Servicer or the Depositor has actual knowledge of information
material to the Sarbanes-Oxley Certification, the Servicer or the Depositor, as
the case may be, shall promptly notify the Servicer and the Trustee. The
respective parties hereto agree to cooperate with all reasonable requests made
by any Certifying Person or Certification Party in connection with such Person's
attempt to conduct any due diligence that such Person reasonably believes to be
appropriate in order to allow it to deliver any Sarbanes-Oxley Certification or
portion thereof with respect to the Trust Fund.

     Section 11.06 Form 15 Filing.

     Prior to January 30 of the first year in which the Depositor is able to do
so under applicable law, the Trustee on behalf of the Depositor shall file a
Form 15 relating to the automatic suspension of reporting in respect of the
Trust Fund under the Exchange Act.

     Section 11.07 Report on Assessment of Compliance and Attestation.

     (a) On or before March 15 of each calendar year, commencing in 2008, unless
no reporting obligation under the Exchange Act exists at such time with respect
to the Trust Fund:

          (i) The Servicer shall deliver to the Trustee (with a copy to the
     Depositor) a report (in form and substance reasonably satisfactory to the
     Trustee) regarding the Servicer's or the Trustee's, as applicable,
     assessment of compliance with the Servicing Criteria during the immediately
     preceding calendar year, as required under Rules 13a-18 and 15d-18 of the
     Exchange Act and Item 1122 of Regulation AB. Such report shall be signed by
     an authorized officer of such Person and shall address each of the
     Servicing Criteria applicable to each party specified on a certification
     delivered to the Trustee substantially in the form of Exhibit S. To the
     extent any of the Servicing Criteria are not applicable to such Person,
     with respect to asset-backed securities transactions taken as a whole
     involving such Person and that are backed by the same asset type backing
     the Certificates, such report shall include such a statement to that
     effect. The Trustee and the Servicer, and each of their respective officers
     and directors shall be entitled to rely upon each such servicing criteria
     assessment.

                                      107
<PAGE>

          (ii) The Servicer shall deliver to the Trustee, and the Trustee shall
     provide on its own behalf, a report of a registered public accounting firm
     reasonably acceptable to the Trustee that attests to, and reports on, the
     assessment of compliance made by Servicer or the Trustee, as applicable,
     and delivered pursuant to the preceding paragraphs. Such attestation shall
     be in accordance with Rules 1-02(a)(3) and 2-02(g) of Regulation S-X under
     the Securities Act and the Exchange Act, including, without limitation that
     in the event that an overall opinion cannot be expressed, such registered
     public accounting firm shall state in such report why it was unable to
     express such an opinion. Such report must be available for general use and
     not contain restricted use language. To the extent any of the Servicing
     Criteria are not applicable to such Person, with respect to asset-backed
     securities transactions taken as a whole involving such Person and that are
     backed by the same asset type backing the Certificates, such report shall
     include such a statement to that effect.

          (iii) The Servicer shall cause each of its Reporting Subcontractors to
     deliver to the Trustee (with a copy to the Depositor) an assessment of
     compliance and accountant's attestation as and when provided in paragraphs
     (a) and (b) of this Section 11.07.

          (iv) The Trustee shall cause each of its Reporting Subcontractors to
     deliver to the Trustee (with a copy to the Depositor) and the Servicer an
     assessment of compliance and accountant's attestation as and when provided
     in paragraphs (a) and (b) of this Section.

          (v) The Servicer shall execute (and the Servicer shall cause each
     Reporting Subcontractor to execute) a reliance certificate to enable the
     Certification Parties to rely upon each (A) annual compliance statement
     provided pursuant to Section 3.17, (B) annual report on assessments of
     compliance with servicing criteria provided pursuant to this Section 11.07
     and (C) accountant's report provided pursuant to this Section 11.07 and
     shall include a certification that each such annual compliance statement or
     report discloses any deficiencies or defaults described to the registered
     public accountants of such Person to enable such accountants to render the
     certificates provided for in this Section 11.07.

          (vi) The Trustee shall execute (and the Trustee shall cause each
     Reporting Subcontractor to execute) a reliance certificate to enable the
     Certification Parties to rely upon each (A) annual report on assessments of
     compliance with servicing criteria provided pursuant to this Section 11.07
     and (C) accountant's report provided pursuant to this Section 11.07 and
     shall include a certification that each such report discloses any
     deficiencies or defaults described to the registered public accountants of
     such Person to enable such accountants to render the certificates provided
     for in this Section 11.07.

     (b) In the event the Servicer, the Trustee or Reporting Subcontractor is
terminated or resigns during the term of this Agreement, such Person shall
provide documents and information required by this Section 11.07 with respect to
the period of time it was subject to this Agreement or provided services with
respect to the Trust Fund, the Certificates or the Mortgage Loans.

     (c) An assessment of compliance provided by a Subcontractor pursuant to
Section 11.07(a)(iii) or (iv) need not address any elements of the Servicing
Criteria other than those specified by the Servicer or the Trustee, as
applicable, pursuant to Section 11.07(a)(i).

     Section 11.08 Use of Subcontractors.

     (a) [Reserved].

                                      108
<PAGE>

     (b) It shall not be necessary for the Servicer or the Trustee to seek the
consent of the Depositor or any other party hereto to the utilization of any
Subcontractor. The Servicer or the Trustee, as applicable, shall promptly upon
request provide to the Trustee and the Depositor (or any designee of the
Depositor, such as the Servicer or administrator) a written description (in form
and substance satisfactory to the Depositor) of the role and function of each
Subcontractor utilized by such Person, specifying (i) the identity of each such
Subcontractor, (ii) which (if any) of such Subcontractors are "participating in
the servicing function" within the meaning of Item 1122 of Regulation AB, and
(iii) which elements of the Servicing Criteria will be addressed in assessments
of compliance provided by each Subcontractor identified pursuant to clause (ii)
of this paragraph.

     As a condition to the utilization of any Subcontractor determined to be a
Reporting Subcontractor, the Servicer or the Trustee, as applicable, shall cause
any such Subcontractor used by such Person for the benefit of the Depositor to
comply with the provisions of Sections 11.07 and 11.09 of this Agreement to the
same extent as if such Subcontractor were the Servicer (except with respect to
the Servicer's duties with respect to preparing and filing any Exchange Act
Reports or as the Certifying Person) or the Trustee, as applicable. The Servicer
or the Trustee, as applicable, shall be responsible for obtaining from each
Subcontractor and delivering to the Trustee and the Servicer, any assessment of
compliance and attestation required to be delivered by such Subcontractor under
Section 11.05 and Section 11.07, in each case as and when required to be
delivered.

     Section 11.09 Amendments.

     In the event the parties to this Agreement desire to further clarify or
amend any provision of this Article 11, this Agreement shall be amended to
reflect the new agreement between the parties covering matters in this Article
11 pursuant to Section 10.01, which amendment shall not require any Opinion of
Counsel or Rating Agency confirmations or the consent of any Certificateholder.

     If, during the period that the Depositor is required to file Exchange Act
Reports with respect to the Trust Fund, the Servicer is no longer an Affiliate
of the Depositor, the Depositor shall assume the obligations and
responsibilities of the Servicer in this Article 11 with respect to the
preparation and filing of the Exchange Act Reports and/or acting as the
Certifying Person, if the Depositor has received indemnity from such successor
Servicer satisfactory to the Depositor, and such Servicer has agreed to provide
a Sarbanes-Oxley Certification to the Depositor substantially in the form of
Exhibit U.

                                   * * * * * *

                                      109
<PAGE>

     IN WITNESS WHEREOF, the Depositor, the Trustee, and the Seller and Servicer
have caused their names to be signed hereto by their respective officers
thereunto duly authorized as of the day and year first above written.

                                       INDYMAC MBS, INC.
                                            as Depositor

                                       By:/s/ Jill Jacobson
                                          --------------------------------------
                                                Name:  Jill Jacobson
                                                Title: Vice President

                                       DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                            as Trustee

                                       By:/s/ Jennifer Hermansader
                                          --------------------------------------
                                                Name:  Jennifer Hermansader
                                                Title: Associate

                                       By: /s/ Marion Hogan
                                          --------------------------------------
                                                Name:  Marion Hogan
                                                Title: Associate

                                       INDYMAC BANK, F.S.B.
                                            as Seller and Servicer

                                       By: /s/ Jill Jacobson
                                          --------------------------------------
                                                Name:  Jill Jacobson
                                                Title: Vice President

<PAGE>

STATE OF CALIFORNIA       )
                          :  ss.:
COUNTY OF Los Angeles     )

     On this 28th day of June, 2007, before me, personally appeared Jill
Jacobson, known to me to be a Vice President of IndyMac MBS, Inc., one of the
entities that executed the within instrument, and also known to me to be the
person who executed it on behalf of said entity, and acknowledged to me that
such entity executed the within instrument.

     IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official
seal the day and year in this certificate first above written.

                                         /s/ Evan Fitzsimon
                                         ------------------------------
                                         Notary Public

[NOTARIAL SEAL]

                                        1

<PAGE>

STATE OF CALIFORNIA       )
                          :  ss.:
COUNTY OF Orange          )

     On this 25th day of June, 2007, before me, personally appeared Jennifer
Hermansader and Marion Hogan, known to me to be an Associate and an Associate,
respectively, of Deutsche Bank National Trust Company, one of the entities that
executed the within instrument, and also known to me to be the person who
executed it on behalf of said entity, and acknowledged to me that such entity
executed the within instrument.

     IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official
seal the day and year in this certificate first above written.

                                         /s/ Tiffany Yuan_______
                                         ------------------------------
                                         Notary Public

[NOTARIAL SEAL]

                                       2
<PAGE>

STATE OF CALIFORNIA        )
                           :  ss.:
COUNTY OF Los Angeles      )

     On this 28th day of June, 2007, before me, personally appeared Jill
Jacobson, known to me to be a Vice President of IndyMac Bank, F.S.B., one of the
entities that executed the within instrument, and also known to me to be the
person who executed it on behalf of said entity, and acknowledged to me that
such entity executed the within instrument.

     IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official
seal the day and year in this certificate first above written.

                                         /s/ Evan Fitzsimon
                                         ------------------------------
                                         Notary Public

[NOTARIAL SEAL]

                                       3
<PAGE>

                                   Schedule I

            MORTGAGE LOAN SCHEDULE [DELIVERED AT CLOSING TO TRUSTEE]

                                      S-I-1
<PAGE>

                                   Schedule II

      INDYMAC MBS, INC. MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 2007-A1

              Representations and Warranties of the Seller/Servicer

     Indy Mac Bank, F.S.B. ("IndyMac") hereby makes the representations and
warranties set forth in this Schedule II to the Depositor and the Trustee, as of
the Closing Date. Capitalized terms used but not otherwise defined in this
Schedule II shall have the meanings assigned thereto in the Pooling and
Servicing Agreement (the "Pooling and Servicing Agreement") relating to the
above-referenced Series, among IndyMac, as seller and servicer, IndyMac MBS,
Inc., as depositor, and Deutsche Bank National Trust Company, as trustee.

          (1) IndyMac is duly organized as a federally insured savings bank and
     is validly existing and in good standing under the laws of the United
     States of America and is duly authorized and qualified to transact any
     business contemplated by the Pooling and Servicing Agreement to be
     conducted by IndyMac in any state in which a Mortgaged Property is located
     or is otherwise not required under applicable law to effect such
     qualification and, in any event, is in compliance with the doing business
     laws of any such state, to the extent necessary to ensure its ability to
     enforce each Mortgage Loan, to service the Mortgage Loans in accordance
     with the Pooling and Servicing Agreement and to perform any of its other
     obligations under the Pooling and Servicing Agreement in accordance with
     the terms thereof.

          (2) IndyMac has the full corporate power and authority to sell and
     service each Mortgage Loan, and to execute, deliver and perform, and to
     enter into and consummate the transactions contemplated by the Pooling and
     Servicing Agreement and has duly authorized by all necessary corporate
     action on the part of IndyMac the execution, delivery and performance of
     the Pooling and Servicing Agreement; and the Pooling and Servicing
     Agreement, assuming the due authorization, execution and delivery thereof
     by the other parties thereto, constitutes a legal, valid and binding
     obligation of IndyMac, enforceable against IndyMac in accordance with its
     terms, except that (a) the enforceability thereof may be limited by
     bankruptcy, insolvency, moratorium, receivership and other similar laws
     relating to creditors' rights generally and (b) the remedy of specific
     performance and injunctive and other forms of equitable relief may be
     subject to equitable defenses and to the discretion of the court before
     which any proceeding therefor may be brought.

          (3) The execution and delivery of the Pooling and Servicing Agreement
     by IndyMac, the sale and servicing of the Mortgage Loans by IndyMac under
     the Pooling and Servicing Agreement, the consummation of any other of the
     transactions contemplated by the Pooling and Servicing Agreement, and the
     fulfillment of or compliance with the terms thereof are in the ordinary
     course of business of IndyMac and will not (A) result in a material breach
     of any term or provision of the charter or by-laws of IndyMac or (B)
     materially conflict with, result in a material breach, violation or
     acceleration of, or result in a material default under, any other material
     agreement or instrument to which IndyMac is a party or by which it may be
     bound, or (C) constitute a material violation of any statute, order or
     regulation applicable to IndyMac of any court, regulatory body,
     administrative agency or governmental body having jurisdiction over IndyMac
     (including the OTS, the Federal Deposit Insurance Corporation or any other
     governmental entity having regulatory authority over IndyMac); and IndyMac
     is not in breach or violation of any material indenture or other material
     agreement or instrument, or in violation of any statute, order or
     regulation of any court, regulatory body, administrative agency or

                                     S-II-1
<PAGE>

     governmental body having jurisdiction over it (including the OTS, the
     Federal Deposit Insurance Corporation or any other governmental entity
     having regulatory authority over IndyMac) which breach or violation may
     materially impair IndyMac's ability to perform or meet any of its
     obligations under the Pooling and Servicing Agreement.

          (4) IndyMac is an approved servicer of conventional mortgage loans for
     FNMA or FHLMC or is a mortgagee approved by the Secretary of Housing and
     Urban Development pursuant to Sections 203 and 211 of the National Housing
     Act.

          (5) No litigation is pending or, to the best of IndyMac's knowledge,
     threatened against IndyMac that would prohibit the execution or delivery
     of, or performance under, the Pooling and Servicing Agreement by IndyMac.

          (6) IndyMac is a member of MERS in good standing, and will comply in
     all material respects with the rules and procedures of MERS in connection
     with the servicing of the MERS Mortgage Loans for as long as such Mortgage
     Loans are registered with MERS.

                                     S-II-2
<PAGE>

                                  Schedule III

                                INDYMAC MBS, INC.
                       MORTGAGE PASS-THROUGH CERTIFICATES,
                                 SERIES 2007-A1

             Representations and Warranties as to the Mortgage Loans

     IndyMac Bank, F.S.B. ("IndyMac") hereby makes the representations and
warranties set forth in this Schedule III to the Depositor and the Trustee, as
of the Closing Date or if so specified in this Schedule III, as of the Cut-off
Date with respect to each Mortgage Loan. Capitalized terms used but not
otherwise defined in this Schedule III shall have the meanings assigned to them
in the Pooling and Servicing Agreement (the "Pooling and Servicing Agreement")
relating to the above-referenced Series, among IndyMac, as seller and servicer,
IndyMac MBS, Inc., as depositor, and Deutsche Bank National Trust Company, as
trustee.

          (1) The information set forth on Schedule I to the Pooling and
     Servicing Agreement with respect to each Mortgage Loan is true and correct
     in all material respects as of the Closing Date.

          (2) All regularly scheduled monthly payments due with respect to each
     Mortgage Loan up to and including the Due Date before the Cut-off Date have
     been made; and as of the Cut-off Date, no Mortgage Loan had a regularly
     scheduled monthly payment that was 60 or more days Delinquent during the
     twelve months before the Cut-off Date.

          (3) With respect to any Mortgage Loan that is not a Cooperative Loan,
     each Mortgage is a valid and enforceable first lien on the Mortgaged
     Property subject only to (a) the lien of nondelinquent current real
     property taxes and assessments and liens or interests arising under or as a
     result of any federal, state or local law, regulation or ordinance relating
     to hazardous wastes or hazardous substances and, if the related Mortgaged
     Property is a unit in a condominium project or planned unit development,
     any lien for common charges permitted by statute or homeowner association
     fees, (b) covenants, conditions and restrictions, rights of way, easements
     and other matters of public record as of the date of recording of such
     Mortgage, such exceptions appearing of record being generally acceptable to
     mortgage lending institutions in the area wherein the related Mortgaged
     Property is located or specifically reflected in the appraisal made in
     connection with the origination of the related Mortgage Loan, and (c) other
     matters to which like properties are commonly subject which do not
     materially interfere with the benefits of the security intended to be
     provided by such Mortgage.

          (4) Immediately before the assignment of the Mortgage Loans to the
     Depositor, the Seller had good title to, and was the sole owner of, each
     Mortgage Loan free and clear of any pledge, lien, encumbrance or security
     interest and had full right and authority, subject to no interest or
     participation of, or agreement with, any other party, to sell and assign
     the same pursuant to the Pooling and Servicing Agreement.

          (5) As of the Closing Date, there was no delinquent tax or assessment
     lien against the related Mortgaged Property.

                                    S-III-1
<PAGE>

          (6) There is no valid offset, defense or counterclaim to any Mortgage
     Note or Mortgage, including the obligation of the Mortgagor to pay the
     unpaid principal of or interest on such Mortgage Note.

          (7) There are no mechanics' liens or claims for work, labor or
     material affecting any Mortgaged Property which are or may be a lien prior
     to or equal with, the lien of such Mortgage, except those which are insured
     against by the title insurance policy referred to in item (11) below.

          (8) No Mortgaged Property has been materially damaged by water, fire,
     earthquake, windstorm, flood, tornado or similar casualty (excluding
     casualty from the presence of hazardous wastes or hazardous substances, as
     to which the Seller makes no representation) so as to affect adversely the
     value of the related Mortgaged Property as security for the Mortgage Loan.

          (9) Each Mortgage Loan at origination complied in all material
     respects with applicable local, state and federal laws and regulations,
     including usury, equal credit opportunity, real estate settlement
     procedures, truth-in-lending, and disclosure laws, or any noncompliance
     does not have a material adverse effect on the value of the related
     Mortgage Loan.

          (10) The Seller has not modified the Mortgage in any material respect
     (except that a Mortgage Loan may have been modified by a written instrument
     which has been recorded or submitted for recordation, if necessary, to
     protect the interests of the Certificateholders and which has been
     delivered to the Trustee); satisfied, cancelled or subordinated such
     Mortgage in whole or in part; released the related Mortgaged Property in
     whole or in part from the lien of such Mortgage; or executed any instrument
     of release, cancellation, modification or satisfaction with respect
     thereto.

          (11) A lender's policy of title insurance together with a condominium
     endorsement and extended coverage endorsement, if applicable, in an amount
     at least equal to the Cut-off Date Principal Balance of each such Mortgage
     Loan or a commitment (binder) to issue the same was effective on the date
     of the origination of each Mortgage Loan and each such policy is valid and
     remains in full force and effect.

          (12) Each Mortgage Loan was originated (within the meaning of Section
     3(a)(41) of the Exchange Act) by an entity that satisfied at the time of
     origination the requirements of Section 3(a)(41) of the Exchange Act.

          (13) All of the improvements which were included for the purpose of
     determining the Appraised Value of the Mortgaged Property lie wholly within
     the boundaries and building restriction lines of such property, and no
     improvements on adjoining properties encroach upon the Mortgaged Property,
     unless such failure to be wholly within such boundaries and restriction
     lines or such encroachment, as the case may be, does not have a material
     effect on the value of the Mortgaged Property.

          (14) As of the date of origination of each Mortgage Loan, no
     improvement located on or being part of the Mortgaged Property is in
     violation of any applicable zoning law or regulation unless such violation
     would not have a material adverse effect on the value of the related
     Mortgaged Property. All inspections, licenses and certificates required to
     be made or issued with respect to all occupied portions of the Mortgaged
     Property and, with respect to the use and occupancy of the same, including
     certificates of occupancy and fire underwriting certificates, have been
     made or obtained from the appropriate authorities, unless the lack thereof
     would not have a material adverse effect on the value of the Mortgaged
     Property.

                                    S-III-2
<PAGE>

          (15) The Mortgage Note and the related Mortgage are genuine, and each
     is the legal, valid and binding obligation of the maker thereof,
     enforceable in accordance with its terms and under applicable law.

          (16) The proceeds of the Mortgage Loan have been fully disbursed and
     there is no requirement for future advances thereunder.

          (17) The related Mortgage contains customary and enforceable
     provisions which render the rights and remedies of the holder thereof
     adequate for the realization against the Mortgaged Property of the benefits
     of the security, including, (i) in the case of a Mortgage designated as a
     deed of trust, by trustee's sale, and (ii) otherwise by judicial
     foreclosure.

          (18) With respect to each Mortgage constituting a deed of trust, a
     trustee, duly qualified under applicable law to serve as such, has been
     properly designated and currently so serves and is named in such Mortgage,
     and no fees or expenses are or will become payable by the
     Certificateholders to the trustee under the deed of trust, except in
     connection with a trustee's sale after default by the Mortgagor.

          (19) At the Closing Date, the improvements upon each Mortgaged
     Property are covered by a valid and existing hazard insurance policy with a
     generally acceptable carrier that provides for fire and extended coverage
     and coverage for such other hazards as are customarily required by
     institutional single family mortgage lenders in the area where the
     Mortgaged Property is located, and the Seller has received no notice that
     any premiums due and payable thereon have not been paid; the Mortgage
     obligates the Mortgagor thereunder to maintain all such insurance including
     flood insurance at the Mortgagor's cost and expense. Anything to the
     contrary in this item (19) notwithstanding, no breach of this item (19)
     shall be deemed to give rise to any obligation of the Seller to repurchase
     or substitute for such affected Mortgage Loan or Loans so long as the
     Servicer maintains a blanket policy pursuant to the second paragraph of
     Section 3.10(a) of the Pooling and Servicing Agreement.

          (20) If at the time of origination of each Mortgage Loan, the related
     Mortgaged Property was in an area then identified in the Federal Register
     by the Federal Emergency Management Agency as having special flood hazards,
     a flood insurance policy in a form meeting the then-current requirements of
     the Flood Insurance Administration is in effect with respect to the
     Mortgaged Property with a generally acceptable carrier.

          (21) There is no proceeding pending or threatened for the total or
     partial condemnation of any Mortgaged Property, nor is such a proceeding
     currently occurring.

          (22) There is no material event which, with the passage of time or
     with notice and the expiration of any grace or cure period, would
     constitute a material non-monetary default, breach, violation or event of
     acceleration under the Mortgage or the related Mortgage Note; and the
     Seller has not waived any material non-monetary default, breach, violation
     or event of acceleration.

          (23) Each Mortgage File contains an appraisal of the related Mortgaged
     Property prepared in accordance with the Uniform Standards of Professional
     Appraisal Practice (USPAP).

          (24) Any leasehold estate securing a Mortgage Loan has a stated term
     of not less than five years in excess of the term of the related Mortgage
     Loan.

                                    S-III-3
<PAGE>

          (25) Each Mortgage Loan was selected from among the outstanding
     fixed-rate one- to four-family mortgage loans in the Seller's portfolio at
     the Closing Date as to which the representations and warranties made with
     respect to the Mortgage Loans set forth in this Schedule III can be made.
     No such selection was made in a manner intended to adversely affect the
     interests of the Certificateholders.

          (26) None of the Mortgage Loans are Cooperative Loans.

          (27) The PO Percentage of the Stated Principal Balances of the
     Discount Mortgage Loans does not exceed $2,203,478.

          (28) None of the Mortgage Loans is a "high cost" loan, "covered" loan
     or any other similarly designated loan as defined under any state, local or
     federal law, as defined by applicable predatory and abusive lending laws.

          (29) Each Mortgage Loan at the time it was made complied in all
     material respects with applicable local, state, and federal laws,
     including, but not limited to, all applicable predatory and abusive lending
     laws.

          (30) No Mortgage Loan is a "High-Cost Home Loan" as defined in the New
     Jersey Home Ownership Act effective November 27, 2003 (N.J.S.A. 46:10B-22
     et seq.).

          (31) No Mortgage Loan is a "High-Cost Home Loan" as defined in the New
     Mexico Home Loan Protection Act effective January 1, 2004 (N.M. Stat. Ann.
     ss.ss. 58-21A-1 et seq.).

          (32) Each Mortgage Loan has been underwritten and serviced
     substantially in accordance with the Seller's guidelines, subject to such
     variances as are reflected on the Mortgage Loan Schedule or that the Seller
     has approved.

          (33) No Mortgage Loan is a High Cost Loan or Covered Loan, as
     applicable (as such terms are defined in the then-current version of
     Standard & Poor's LEVELS(R) Glossary, which is now Version 6.0 Revised,
     Appendix E) and no Mortgage Loan originated on or after October 1, 2002
     through March 6, 2003 is governed by the Georgia Fair Lending Act
     (Exclusion Representation).

          (34) The Pooling and Servicing Agreement creates a valid and
     continuing "security interest" (as defined in Section 1-201(37) of the UCC)
     in each Mortgage Note in favor of the Trustee, which security interest is
     prior to all other liens and is enforceable as such against creditors of
     and purchasers from the Depositor. Each Mortgage Note constitutes
     "promissory notes" (as defined in Section 9-102(a)(65) of the UCC).
     Immediately before the assignment of each Mortgage Note to the Trustee, the
     Depositor had good and marketable title to such Mortgage Note free and
     clear of any lien, claim, encumbrance of any Person. All original executed
     copies of each Mortgage Note have been or shall be delivered to the Trustee
     within five Business Days following the Closing Date. Other than the
     security interest granted to the Trustee, the Depositor has not pledged,
     assigned, sold, granted a security interest in, or otherwise conveyed any
     Mortgage Note. The Depositor has not authorized the filing of and is not
     aware of any financing statements against the Depositor that include a
     description of any of the Mortgage Notes. The Depositor is not aware of any
     judgment or tax liens filed against the Depositor. None of the Mortgage
     Notes has any marks or notations indicating that they have been pledged,
     assigned or otherwise conveyed to any Person other than the Trustee.

                                    S-III-4
<PAGE>

          (35) To the best of Seller's knowledge, there was no fraud involved in
     the origination of any Mortgage Loan by the mortgagee or by the Mortgagor,
     any appraiser or any other party involved in the origination of the
     Mortgage Loan

          (36) No Mortgage Loan is a "High-Cost Home Mortgage Loan" as defined
     in the Massachusetts Predatory Home Loan Practices Act effective November
     7, 2004 (Mass. Gen. Laws ch. 183C).

                                    S-III-5
<PAGE>

                                   Schedule IV

                           Principal Balance Schedule

            See pages S-91 through S-94 in the prospectus supplement.

                                     S-IV-1
<PAGE>

                                   Schedule V
                             Form of Monthly Report

                           [On file with the Trustee]

                                      S-V-1
<PAGE>

                                    EXHIBIT A

     [FORM OF SENIOR CERTIFICATE (OTHER THAN NOTIONAL AMOUNT CERTIFICATES)]

     [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE ISSUER OR
ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY
CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME
AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE
TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

     SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A "REGULAR
INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT," AS THOSE TERMS ARE
DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE "CODE").

                                      A-1
<PAGE>

Certificate No.                       :

Cut-off  Date                         :

First Distribution Date               :

Initial Certificate Balance
of this Certificate
("Denomination")                      :           $

Initial Certificate Balances
of all Certificates
of this Class                         :           $

CUSIP                                 :

Interest Rate                         :           %

Maturity Date                         :
                                INDYMAC MBS, INC.
                    IndyMac IMJA Mortgage Loan Trust 2007-A1
               Mortgage Pass-Through Certificates, Series 2007-A1
                                   Class [__]

                    evidencing a percentage interest in the distributions
               allocable to the Certificates of the above-referenced Class with
               respect to a Trust Fund consisting primarily of a pool of
               conventional mortgage loans (the "Mortgage Loans") secured by
               first liens on one- to four-family residential properties.

                         IndyMac MBS, Inc., as Depositor

     Principal in respect of this Certificate is distributable monthly as set
forth herein or in the Agreement (defined below). Accordingly, the Certificate
Balance at any time may be less than the Certificate Balance as set forth
herein. This Certificate does not evidence an obligation of, or an interest in,
and is not guaranteed by the Depositor, the Seller, the Servicer or the Trustee
referred to below or any of their respective affiliates. Neither this
Certificate nor the Mortgage Loans are guaranteed or insured by any governmental
agency or instrumentality.

     This certifies that _______________________________ is the registered owner
of the Percentage Interest evidenced by this Certificate (obtained by dividing
the denomination of this Certificate by the aggregate Initial Certificate
Balances of all Certificates of the Class to which this Certificate belongs) in
certain monthly distributions with respect to a Trust Fund consisting primarily
of the Mortgage Loans deposited by IndyMac MBS, Inc. (the "Depositor"). The
Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of
the Cut-off Date specified above (the "Agreement") among the Depositor, IndyMac
Bank, F.S.B., as seller (in such capacity, the "Seller") and as servicer (in
such capacity, the "Servicer"), and Deutsche Bank National Trust Company, as
trustee (the "Trustee"). To the extent not defined herein, the capitalized terms
used herein have the meanings assigned in the Agreement. This Certificate is
issued under and is subject to the terms, provisions and conditions of the
Agreement, to which Agreement the Holder of this Certificate by virtue of the
acceptance hereof assents and by which such Holder is bound.

                                      A-2
<PAGE>

     Reference is hereby made to the further provisions of this Certificate set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

     This Certificate shall not be entitled to any benefit under the Agreement
or be valid for any purpose unless manually countersigned by an authorized
signatory of the Trustee.

                                      A-3
<PAGE>

     IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
executed.

Dated:  ____________, 20__

                                        DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                         as Trustee

                                        By ______________________

Countersigned:

By ___________________________
     Authorized Signatory of
     DEUTSCHE BANK NATIONAL TRUST COMPANY,
     as Trustee

                                      A-4
<PAGE>

                                    EXHIBIT B

                       [FORM OF SUBORDINATED CERTIFICATE]

     [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE ISSUER OR
ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY
CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME
AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE
TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

     SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A "REGULAR
INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT," AS THOSE TERMS ARE
DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE "CODE").

     THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO CERTAIN
CERTIFICATES AS DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.

     [THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED (THE "ACT"). ANY RESALE OR TRANSFER OF THIS CERTIFICATE WITHOUT
REGISTRATION THEREOF UNDER THE ACT MAY ONLY BE MADE IN A TRANSACTION EXEMPTED
FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE
PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.]

     [NEITHER THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS
THE TRANSFEREE REPRESENTS TO THE TRUSTEE THAT SUCH TRANSFEREE IS NOT AND IS NOT
INVESTING ON BEHALF OF OR WITH PLAN ASSETS OF AN EMPLOYEE BENEFIT PLAN SUBJECT
TO THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR
A PLAN SUBJECT TO SECTION 4975 OF THE CODE, OR, DELIVERS A REPRESENTATION IN
ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN, OR DELIVERS
TO THE TRUSTEE AN OPINION OF COUNSEL IN ACCORDANCE WITH THE PROVISIONS OF THE
AGREEMENT REFERRED TO HEREIN. NOTWITHSTANDING ANYTHING ELSE TO THE CONTRARY
HEREIN, ANY PURPORTED TRANSFER OF THIS CERTIFICATE TO OR ON BEHALF OF AN
EMPLOYEE BENEFIT PLAN SUBJECT TO ERISA OR TO SECTION 4975 OF THE CODE WITHOUT
THE OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE AS DESCRIBED ABOVE SHALL BE
VOID AND OF NO EFFECT.]

                                      B-1
<PAGE>

Certificate No.                       :

Cut-off  Date                         :

First Distribution Date               :

Initial Certificate Balance of
this Certificate
("Denomination")                      :           $

Initial Certificate Balances
of all Certificates
of this Class                         :           $

CUSIP                                 :

                                INDYMAC MBS, INC.
                    IndyMac IMJA Mortgage Loan Trust 2007-A1
               Mortgage Pass-Through Certificates, Series 2007-A1
                                   Class [___]

                    evidencing a percentage interest in the distributions
               allocable to the Certificates of the above-referenced Class with
               respect to a Trust Fund consisting primarily of a pool of
               conventional mortgage loans (the "Mortgage Loans") secured by
               first liens on one- to four-family residential properties.

                         IndyMac MBS, Inc., as Depositor

Principal in respect of this Certificate is distributable monthly as set forth
herein or in the Agreement (defined below). Accordingly, the Certificate Balance
at any time may be less than the Certificate Balance as set forth herein. This
Certificate does not evidence an obligation of, or an interest in, and is not
guaranteed by the Depositor, the Seller, the Servicer or the Trustee referred to
below or any of their respective affiliates. Neither this Certificate nor the
Mortgage Loans are guaranteed or insured by any governmental agency or
instrumentality.

This certifies that ____________________________________ is the registered owner
of the Percentage Interest evidenced by this Certificate (obtained by dividing
the denomination of this Certificate by the aggregate Initial Certificate
Balances of the denominations of all Certificates of the Class to which this
Certificate belongs) in certain monthly distributions with respect to a Trust
Fund consisting primarily of the Mortgage Loans deposited by IndyMac MBS, Inc.
(the "Depositor"). The Trust Fund was created pursuant to a Pooling and
Servicing Agreement dated as of the Cut-off Date specified above (the
"Agreement") among the Depositor, IndyMac Bank, F.S.B., as seller (in such
capacity, the "Seller"), and as servicer (in such capacity, the "Servicer"), and
Deutsche Bank National Trust Company, as trustee (the "Trustee"). To the extent
not defined herein, the capitalized terms used herein have the meanings assigned
in the Agreement. This Certificate is issued under and is subject to the terms,
provisions and conditions of the Agreement, to which Agreement the Holder of
this Certificate by virtue of the acceptance hereof assents and by which such
Holder is bound.

[No transfer of a Certificate of this Class shall be made unless such transfer
is made pursuant to an effective registration statement under the Securities Act
and any applicable state securities laws or is

                                      B-2
<PAGE>

exempt from the registration requirements under said Act and such laws. In the
event that a transfer is to be made in reliance upon an exemption from the
Securities Act and such laws, in order to assure compliance with the Securities
Act and such laws, the Certificateholder desiring to effect such transfer and
such Certificateholder's prospective transferee shall each certify to the
Trustee in writing the facts surrounding the transfer. In the event that such a
transfer is to be made within three years from the date of the initial issuance
of Certificates pursuant hereto, there shall also be delivered (except in the
case of a transfer pursuant to Rule 144A of the Securities Act) to the Trustee
an Opinion of Counsel that such transfer may be made pursuant to an exemption
from the Securities Act and such state securities laws, which Opinion of Counsel
shall not be obtained at the expense of the Trustee, the Seller, the Servicer or
the Depositor. The Holder hereof desiring to effect such transfer shall, and
does hereby agree to, indemnify the Trustee and the Depositor against any
liability that may result if the transfer is not so exempt or is not made in
accordance with such federal and state laws.]

[No transfer of a Certificate of this Class shall be made unless the Trustee
shall have received either (i) a representation [letter] from the transferee of
such Certificate, acceptable to and in form and substance satisfactory to the
Trustee, to the effect that such transferee is not an employee benefit plan or
other benefit plan subject to Section 406 of ERISA or Section 4975 of the Code,
nor a person acting on behalf of or investing plan assets of any such plan,
which representation letter shall not be an expense of the Trustee or the
Servicer, (ii) if the purchaser is an insurance company, a representation that
the purchaser is an insurance company which is purchasing such Certificate with
funds contained in an "insurance company general account" (as such term is
defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 ("PTCE
95-60")) and that the purchase and holding of such Certificate are covered under
Sections I and III of PTCE 95-60 or (iii) in the case of any such Certificate
presented for registration in the name of an employee benefit plan subject to
ERISA or Section 4975 of the Code (or comparable provisions of any subsequent
enactments), or a trustee of any such plan or any other person acting on behalf
of any such plan, an Opinion of Counsel satisfactory to the Trustee to the
effect that the purchase and holding of such Certificate will not result in a
nonexempt prohibited transaction under ERISA or Section 4975 of the Code and
will not subject the Trustee or the Servicer to any obligation in addition to
those undertaken in the Agreement, which Opinion of Counsel shall not be an
expense of the Trustee, the Servicer or the Trust Fund. Notwithstanding anything
else to the contrary herein, any purported transfer of a Certificate of this
Class to or on behalf of an employee benefit plan subject to ERISA or to Section
4975 of the Code without the opinion of counsel satisfactory to the Trustee as
described above shall be void and of no effect.]

Reference is hereby made to the further provisions of this Certificate set forth
on the reverse hereof, which further provisions shall for all purposes have the
same effect as if set forth at this place.

This Certificate shall not be entitled to any benefit under the Agreement or be
valid for any purpose unless manually countersigned by an authorized signatory
of the Trustee.

                                      B-3
<PAGE>

     IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
executed.

Dated:  ____________, 20__

                                        DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                         as Trustee

                                        By ______________________

Countersigned:

By ___________________________
   Authorized Signatory of
   DEUTSCHE BANK NATIONAL TRUST COMPANY,
   as Trustee

                                      B-4
<PAGE>

                                    EXHIBIT C

                         [FORM OF CLASS A-R CERTIFICATE]

     SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A
"RESIDUAL INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT," AS THOSE
TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL
REVENUE CODE OF 1986, AS AMENDED (THE "CODE").

     NEITHER THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS
THE PROPOSED TRANSFEREE DELIVERS TO THE TRUSTEE A TRANSFER AFFIDAVIT IN
ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.

     NEITHER THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS
THE TRANSFEREE REPRESENTS TO THE TRUSTEE THAT SUCH TRANSFEREE IS NOT AND IS NOT
INVESTING ON BEHALF OF OR WITH PLAN ASSETS OF AN EMPLOYEE BENEFIT PLAN SUBJECT
TO THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR
A PLAN SUBJECT TO SECTION 4975 OF THE CODE, OR, IF SUCH PURCHASER IS AN
INSURANCE COMPANY, DELIVERS A REPRESENTATION IN ACCORDANCE WITH THE PROVISIONS
OF THE AGREEMENT REFERRED TO HEREIN, OR DELIVERS TO THE TRUSTEE AN OPINION OF
COUNSEL IN ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.
NOTWITHSTANDING ANYTHING ELSE TO THE CONTRARY HEREIN, ANY PURPORTED TRANSFER OF
THIS CERTIFICATE TO OR ON BEHALF OF AN EMPLOYEE BENEFIT PLAN SUBJECT TO ERISA OR
TO SECTION 4975 OF THE CODE WITHOUT THE OPINION OF COUNSEL SATISFACTORY TO THE
TRUSTEE AS DESCRIBED ABOVE SHALL BE VOID AND OF NO EFFECT.

                                      C-1
<PAGE>

Certificate No.                       :

Cut-off  Date                         :

First Distribution Date               :

Initial Certificate Balance
of this Certificate
("Denomination")                      :           $

Initial Certificate Balances
of all Certificates
of this Class                         :           $

CUSIP                                 :

                                INDYMAC MBS, INC.
                    IndyMac IMJA Mortgage Loan Trust 2007-A1
               Mortgage Pass-Through Certificates, Series 2007-A1

                    evidencing the distributions allocable to the Class A-R
               Certificates with respect to a Trust Fund consisting primarily of
               a pool of conventional mortgage loans (the "Mortgage Loans")
               secured by first liens on one- to four-family residential
               properties.

                         IndyMac MBS, Inc., as Depositor

Principal in respect of this Certificate is distributable monthly as set forth
herein or in the Agreement (defined below). Accordingly, the Certificate Balance
at any time may be less than the Certificate Balance as set forth herein. This
Certificate does not evidence an obligation of, or an interest in, and is not
guaranteed by the Depositor, the Seller, the Servicer or the Trustee referred to
below or any of their respective affiliates. Neither this Certificate nor the
Mortgage Loans are guaranteed or insured by any governmental agency or
instrumentality.

This certifies that ____________________________________ is the registered owner
of the Percentage Interest (obtained by dividing the denomination of this
Certificate by the aggregate Initial Certificate Balances of the denominations
of all Certificates of the Class to which this Certificate belongs) in certain
monthly distributions with respect to a Trust Fund consisting of the Mortgage
Loans deposited by IndyMac MBS, Inc. (the "Depositor"). The Trust Fund was
created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off
Date specified above (the "Agreement") among the Depositor, IndyMac Bank,
F.S.B., as seller (in such capacity, the "Seller") and as servicer (in such
capacity, the "Servicer"), and Deutsche Bank National Trust Company, as trustee
(the "Trustee"). To the extent not defined herein, the capitalized terms used
herein have the meanings assigned in the Agreement. This Certificate is issued
under and is subject to the terms, provisions and conditions of the Agreement,
to which Agreement the Holder of this Certificate by virtue of the acceptance
hereof assents and by which such Holder is bound.

Any distribution of the proceeds of any remaining assets of the Trust Fund will
be made only upon presentment and surrender of this Class A-R Certificate at the
Corporate Trust Office.

No transfer of a Class A-R Certificate shall be made unless the Trustee shall
have received either (i) a representation letter from the transferee of such
Certificate, acceptable to and in form and substance

                                      C-2
<PAGE>

satisfactory to the Trustee, to the effect that such transferee is not an
employee benefit plan subject to Section 406 of ERISA or Section 4975 of the
Code, or a person investing on behalf of or with plan assets of any such plan,
which representation letter shall not be an expense of the Trustee or the
Servicer, (ii) if the purchaser is an insurance company, a representation that
the purchaser is an insurance company which is purchasing such Certificate with
funds contained in an "insurance company general account" (as such term is
defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 ("PTCE
95-60")) and that the purchase and holding of such Certificate are covered under
Sections I and III of PTCE 95-60 or (iii) in the case of any Certificate
presented for registration in the name of an employee benefit plan subject to
ERISA or Section 4975 of the Code (or comparable provisions of any subsequent
enactments), or a trustee of any such plan or any other person acting on behalf
of any such plan, an Opinion of Counsel satisfactory to the Trustee and the
Servicer to the effect that the purchase and holding of such Class A-R
Certificate will not result in a nonexempt prohibited transaction under Section
406 of ERISA or Section 4975 of the Code and will not subject the Trustee or the
Servicer to any obligation in addition to those undertaken in the Agreement,
which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or
the Trust Fund. Such representation shall be deemed to have been made to the
Trustee by the Transferee's acceptance of this Class A-R Certificate and by a
beneficial owner's acceptance of its interest in such Certificate.
Notwithstanding anything else to the contrary herein, any purported transfer of
a Class A-R Certificate to or on behalf of an employee benefit plan subject to
ERISA or to Section 4975 of the Code without the opinion of counsel satisfactory
to the Trustee as described above shall be void and of no effect.

Each Holder of this Class A-R Certificate will be deemed to have agreed to be
bound by the restrictions of the Agreement, including but not limited to the
restrictions that (i) each person holding or acquiring any Ownership Interest in
this Class A-R Certificate must be a Permitted Transferee, (ii) no Ownership
Interest in this Class A-R Certificate may be transferred without delivery to
the Trustee of (a) a transfer affidavit of the proposed transferee and (b) a
transfer certificate of the transferor, each of such documents to be in the form
described in the Agreement, (iii) each person holding or acquiring any Ownership
Interest in this Class A-R Certificate must agree to require a transfer
affidavit and to deliver a transfer certificate to the Trustee as required
pursuant to the Agreement, (iv) each person holding or acquiring an Ownership
Interest in this Class A-R Certificate must agree not to transfer an Ownership
Interest in this Class A-R Certificate if it has actual knowledge that the
proposed transferee is not a Permitted Transferee and (v) any attempted or
purported transfer of any Ownership Interest in this Class A-R Certificate in
violation of such restrictions will be absolutely null and void and will vest no
rights in the purported transferee.

Reference is hereby made to the further provisions of this Certificate set forth
on the reverse hereof, which further provisions shall for all purposes have the
same effect as if set forth at this place.

This Certificate shall not be entitled to any benefit under the Agreement or be
valid for any purpose unless manually countersigned by an authorized signatory
of the Trustee.

                                      C-3
<PAGE>

     IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
executed.

Dated:  ____________, 20__

                                        DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                         as Trustee

                                        By ______________________

Countersigned:

By ___________________________
   Authorized Signatory of
   DEUTSCHE BANK NATIONAL TRUST COMPANY,
   as Trustee

                                      C-4
<PAGE>

                                    EXHIBIT D

                      [FORM OF NOTIONAL AMOUNT CERTIFICATE]

     [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE ISSUER OR
ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY
CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME
AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE
TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

     SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A "REGULAR
INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT," AS THOSE TERMS ARE
DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE "CODE").

     [UNTIL THIS CERTIFICATE HAS BEEN THE SUBJECT OF AN ERISA-QUALIFYING
UNDERWRITING, NEITHER THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE
TRANSFERRED UNLESS THE TRANSFEREE DELIVERS TO THE TRUSTEE EITHER A
REPRESENTATION LETTER TO THE EFFECT THAT SUCH TRANSFEREE IS NOT AND IS NOT
INVESTING ON BEHALF OF OR WITH PLAN ASSETS OF AN EMPLOYEE BENEFIT PLAN SUBJECT
TO THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED, OR A PLAN
SUBJECT TO SECTION 4975 OF THE CODE, OR AN OPINION OF COUNSEL IN ACCORDANCE WITH
THE PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN. NOTWITHSTANDING ANYTHING
ELSE TO THE CONTRARY HEREIN, UNTIL THIS CERTIFICATE HAS BEEN THE SUBJECT OF AN
ERISA-QUALIFYING UNDERWRITING, ANY PURPORTED TRANSFER OF THIS CERTIFICATE TO OR
ON BEHALF OF AN EMPLOYEE BENEFIT PLAN SUBJECT TO ERISA OR TO SECTION 4975 OF THE
CODE WITHOUT THE OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE AS DESCRIBED
ABOVE SHALL BE VOID AND OF NO EFFECT.]

THIS CERTIFICATE HAS NO PRINCIPAL BALANCE AND IS NOT ENTITLED TO ANY
DISTRIBUTIONS IN RESPECT OF PRINCIPAL.

                                      D-1
<PAGE>

Certificate No.                       :

Cut-off  Date                         :

First Distribution Date               :

Initial Notional Amount of this
Certificate ("Denomination")          :           $

Initial Notional Amount of all
Certificates of this Class            :           $

CUSIP                                 :

Interest Rate                         :           %

Maturity Date                         :

                                INDYMAC MBS, INC.
                    IndyMac IMJA Mortgage Loan Trust 2007-A1
               Mortgage Pass-Through Certificates, Series 2007-A1
                                   Class [__]

                    evidencing a percentage interest in the distributions
               allocable to the Certificates of the above-referenced Class with
               respect to a Trust Fund consisting primarily of a pool of
               conventional mortgage loans (the "Mortgage Loans") secured by
               first liens on one- to four-family residential properties.

                         IndyMac MBS, Inc., as Depositor

     This Certificate does not evidence an obligation of, or an interest in, and
is not guaranteed by the Depositor, the Seller, the Servicer or the Trustee
referred to below or any of their respective affiliates. Neither this
Certificate nor the Mortgage Loans are guaranteed or insured by any governmental
agency or instrumentality.

                                      D-2
<PAGE>

     This certifies that _______________________________ is the registered owner
of the Percentage Interest evidenced by this Certificate (obtained by dividing
the denomination of this Certificate by the aggregate Initial Notional Amounts
of all Certificates of the Class to which this Certificate belongs) in certain
monthly distributions with respect to a Trust Fund consisting primarily of the
Mortgage Loans deposited by IndyMac MBS, Inc. (the "Depositor"). The Trust Fund
was created pursuant to a Pooling and Servicing Agreement dated as of the
Cut-off Date specified above (the "Agreement") among the Depositor, IndyMac
Bank, F.S.B., as seller (in such capacity, the "Seller") and as servicer (in
such capacity, the "Servicer"), and Deutsche Bank National Trust Company, as
trustee (the "Trustee"). To the extent not defined herein, the capitalized terms
used herein have the meanings assigned in the Agreement. This Certificate is
issued under and is subject to the terms, provisions and conditions of the
Agreement, to which Agreement the Holder of this Certificate by virtue of the
acceptance hereof assents and by which such Holder is bound.

     [Until this certificate has been the subject of an ERISA-Qualifying
Underwriting, no transfer of a Certificate of this Class shall be made unless
the Trustee shall have received either (i) a representation letter from the
transferee of such Certificate, acceptable to and in form and substance
satisfactory to the Trustee, to the effect that such transferee is not an
employee benefit plan subject to Section 406 of ERISA or Section 4975 of the
Code, or a person investing on behalf of or with plan assets of any such plan,
which representation letter shall not be an expense of the Trustee or the
Servicer, or (ii) in the case of any such Certificate presented for registration
in the name of an employee benefit plan subject to ERISA or Section 4975 of the
Code (or comparable provisions of any subsequent enactments), or a trustee of
any such plan or any other person acting on behalf of any such plan, an Opinion
of Counsel satisfactory to the Trustee to the effect that the purchase and
holding of such Certificate will not result in a nonexempt prohibited
transaction under Section 406 of ERISA or Section 4975 of the Code and will not
subject the Trustee or the Servicer to any obligation in addition to those
undertaken in the Agreement, which Opinion of Counsel shall not be an expense of
the Trustee, the Servicer, or the Trust Fund. Notwithstanding anything else to
the contrary herein, until this certificate has been the subject of an
ERISA-Qualifying Underwriting, any purported transfer of a Certificate of this
Class to or on behalf of an employee benefit plan subject to ERISA or to the
Code without the opinion of counsel satisfactory to the Trustee as described
above shall be void and of no effect.]

     Reference is hereby made to the further provisions of this Certificate set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

     This Certificate shall not be entitled to any benefit under the Agreement
or be valid for any purpose unless manually countersigned by an authorized
signatory of the Trustee.

                                      D-3
<PAGE>

     IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
executed.

Dated:  ____________, 20__

                                        DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                         as Trustee

                                        By ______________________

Countersigned:

         By ___________________________
               Authorized Signatory of
               DEUTSCHE BANK NATIONAL TRUST COMPANY,
               as Trustee

                                      D-4
<PAGE>

EXHIBIT E

                        [Form of Reverse of Certificates]

                                INDYMAC MBS, INC.
                    IndyMac IMJA Mortgage Loan Trust 2007-A1
               Mortgage Pass-Through Certificates, Series 2007-A1

     This Certificate is one of a duly authorized issue of Certificates
designated as IndyMac MBS, Inc. Mortgage Pass-Through Certificates, of the
Series specified on the face hereof (herein collectively called the
"Certificates"), and representing a beneficial ownership interest in the Trust
Fund created by the Agreement.

     The Certificateholder, by its acceptance of this Certificate, agrees that
it will look solely to the funds on deposit in the Distribution Account for
payment hereunder and that the Trustee is not liable to the Certificateholders
for any amount payable under this Certificate or the Agreement or, except as
expressly provided in the Agreement, subject to any liability under the
Agreement.

     This Certificate does not purport to summarize the Agreement and reference
is made to the Agreement for the interests, rights and limitations of rights,
benefits, obligations and duties evidenced thereby, and the rights, duties and
immunities of the Trustee.

     Pursuant to the terms of the Agreement, a distribution will be made on the
25th day of each month or, if such 25th day is not a Business Day, the Business
Day immediately following (the "Distribution Date"), commencing on the first
Distribution Date specified on the face hereof, to the Person in whose name this
Certificate is registered at the close of business on the applicable Record Date
in an amount equal to the product of the Percentage Interest evidenced by this
Certificate and the amount required to be distributed to Holders of Certificates
of the Class to which this Certificate belongs on such Distribution Date
pursuant to the Agreement. The Record Date applicable to each Distribution Date
is the last Business Day of the month next preceding the month of such
Distribution Date.

     Distributions on this Certificate shall be made by wire transfer of
immediately available funds to the account of the Holder hereof at a bank or
other entity having appropriate facilities therefor, if such Certificateholder
shall have so notified the Trustee in writing at least five Business Days prior
to the Record Date and such Certificateholder shall satisfy the conditions to
receive such form of payment set forth in the Agreement, or, if not, by check
mailed by first class mail to the address of such Certificateholder appearing in
the Certificate Register. The final distribution on each Certificate will be
made in like manner, but only upon presentment and surrender of such Certificate
at the Corporate Trust Office or such other location specified in the notice to
Certificateholders of such final distribution.

     The Agreement permits, with certain exceptions therein provided, the
amendment thereof and the modification of the rights and obligations of the
Trustee and the rights of the Certificateholders under the Agreement at any time
by the Depositor, the Servicer and the Trustee with the consent of the Holders
of Certificates affected by such amendment evidencing the requisite Percentage
Interest, as provided in the Agreement. Any such consent by the Holder of this
Certificate shall be conclusive and binding on such Holder and upon all future
Holders of this Certificate and of any Certificate issued upon the transfer
hereof or in exchange therefor or in lieu hereof whether or not notation of such
consent is made upon this Certificate. The Agreement also permits the amendment
thereof, in certain limited circumstances, without the consent of the Holders of
any of the Certificates.

                                      E-1
<PAGE>

     As provided in the Agreement and subject to certain limitations therein set
forth, the transfer of this Certificate is registrable in the Certificate
Register of the Trustee upon surrender of this Certificate for registration of
transfer at the Corporate Trust Office, accompanied by a written instrument of
transfer in form satisfactory to the Trustee and the Certificate Registrar duly
executed by the holder hereof or such holder's attorney duly authorized in
writing, and thereupon one or more new Certificates of the same Class in
authorized denominations and evidencing the same aggregate Percentage Interest
in the Trust Fund will be issued to the designated transferee or transferees.

     The Certificates are issuable only as registered Certificates without
coupons in denominations specified in the Agreement. As provided in the
Agreement and subject to certain limitations therein set forth, Certificates are
exchangeable for new Certificates of the same Class in authorized denominations
and evidencing the same aggregate Percentage Interest, as requested by the
Holder surrendering the same.

     No service charge will be made for any such registration of transfer or
exchange, but the Trustee may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

     The Depositor, the Servicer, the Seller and the Trustee and any agent of
the Depositor or the Trustee may treat the Person in whose name this Certificate
is registered as the owner hereof for all purposes, and neither the Depositor,
the Trustee, nor any such agent shall be affected by any notice to the contrary.

     On any Distribution Date on which the aggregate Stated Principal Balance of
the Mortgage Loans in the mortgage pool is less than 10% of the Cut-off Date
Pool Principal Balance, the Servicer will have the option to repurchase, in
whole, from the Trust Fund all remaining Mortgage Loans in the mortgage pool and
all property acquired in respect of the Mortgage Loans in the mortgage pool at a
purchase price determined as provided in the Agreement. In the event that no
such optional termination occurs, the obligations and responsibilities created
by the Agreement will terminate upon the later of the maturity or other
liquidation (or any advance with respect thereto) of the last Mortgage Loan
remaining in the Trust Fund or the disposition of all property in respect
thereof and the distribution to Certificateholders of all amounts required to be
distributed pursuant to the Agreement. In no event, however, will the trust
created by the Agreement continue beyond the expiration of 21 years from the
death of the last survivor of the descendants living at the date of the
Agreement of a certain person named in the Agreement.

     Any term used herein that is defined in the Agreement shall have the
meaning assigned in the Agreement, and nothing herein shall be deemed
inconsistent with that meaning.

                                      E-2
<PAGE>

                                   ASSIGNMENT
                                   ----------

     FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
                      (Please print or typewrite name and
                 address including postal zip code of assignee)

the Percentage Interest evidenced by the within Certificate and hereby
authorizes the transfer of registration of such Percentage Interest to assignee
on the Certificate Register of the Trust Fund.

     I (We) further direct the Trustee to issue a new Certificate of a like
denomination and Class, to the above named assignee and deliver such Certificate
to the following address:

_______________________________________________________________________________.

Dated:

                                       _____________________________________
                                       Signature by or on behalf of assignor

                            DISTRIBUTION INSTRUCTIONS

     The assignee should include the following for purposes of distribution:

     Distributions shall be made, by wire transfer or otherwise, in immediately
available funds to______________________________________________________________
_______________________________________________________________________________,
for the account of ___________________________, account number                 ,
or, if mailed by check, to _____________________________________________________
________________________________________________________________________________
_______________________________________________________________________________.
Applicable statements should be mailed to ______________________________________
________________________________________________________________________________
________________________________________________________________________________

     This information is provided by __________________________________________,
the assignee named above, or __________________________________________________,

     as its agent.

                                      E-3
<PAGE>

STATE OF CALIFORNIA         )
                            :  ss.:
COUNTY OF _____________     )

     On the __th day of _________, 20__ before me, a notary public in and for
said State, personally appeared ________________________, known to me who, being
by me duly sworn, did depose and say that he executed the foregoing instrument.

                                             ___________________________________
                                                       Notary Public

[Notarial Seal]

                                      E-4
<PAGE>

                                   EXHIBIT F-1

                          [FORM OF CLASS P CERTIFICATE]

SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A "REGULAR
INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT," AS THOSE TERMS ARE
DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE "CODE").

THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE "ACT"). ANY RESALE OR TRANSFER OF THIS CERTIFICATE WITHOUT
REGISTRATION THEREOF UNDER THE ACT MAY ONLY BE MADE IN A TRANSACTION EXEMPTED
FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE
PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.

NEITHER THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS THE
TRANSFEREE DELIVERS TO THE TRUSTEE EITHER A REPRESENTATION LETTER TO THE EFFECT
THAT SUCH TRANSFEREE IS NOT AND IS NOT INVESTING ON BEHALF OF OR WITH PLAN
ASSETS OF AN EMPLOYEE BENEFIT PLAN SUBJECT TO THE EMPLOYEE RETIREMENT INCOME
SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR A PLAN SUBJECT TO SECTION 4975 OF
THE CODE, OR, IF THE CERTIFICATE HAS BEEN THE SUBJECT OF AN ERISA-QUALIFYING
UNDERWRITING AND THE PURCHASER IS AN INSURANCE COMPANY, A REPRESENTATION IN
ACCORDANCE WITH THE AGREEMENT REFERRED TO HEREIN, OR AN OPINION OF COUNSEL IN
ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.
NOTWITHSTANDING ANYTHING ELSE TO THE CONTRARY HEREIN, ANY PURPORTED TRANSFER OF
THIS CERTIFICATE TO OR ON BEHALF OF AN EMPLOYEE BENEFIT PLAN SUBJECT TO ERISA OR
TO SECTION 4975 OF THE CODE WITHOUT THE OPINION OF COUNSEL SATISFACTORY TO THE
TRUSTEE AS DESCRIBED ABOVE SHALL BE VOID AND OF NO EFFECT.

                                     F-1-1
<PAGE>

Certificate No.                      :

Cut-off Date                         :

First Distribution Date              :

Initial Certificate Balance
of this Certificate
("Denomination")                     :     $

Initial Certificate Balances
of all Certificates
of this Class                        :     $

CUSIP                                :

Interest Rate                        :

Maturity Date                        :

                                INDYMAC MBS, INC.
                    IndyMac IMJA Mortgage Loan Trust 2007-A1
               Mortgage Pass-Through Certificates, Series 2007-A1

                                     Class P

       evidencing a percentage interest in the distributions allocable to the
       Certificates of the above-referenced Class with respect to a Trust Fund
       consisting primarily of a pool of conventional mortgage loans (the
       "Mortgage Loans") secured by first liens on one- to four-family
       residential properties.

Distributions in respect of this Certificate are distributable monthly as set
forth herein. Accordingly, the Certificate Balance at any time may be less than
the Certificate Balance as set forth herein. This Certificate does not evidence
an obligation of, or an interest in, and is not guaranteed by the Depositor, the
Seller, the Servicer or the Trustee referred to below or any of their respective
affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or
insured by any governmental agency or instrumentality.

This certifies that ________________ is the registered owner of the Percentage
Interest evidenced by this Certificate (obtained by dividing the denomination of
this Certificate by the aggregate of the denominations of all Certificates of
the Class to which this Certificate belongs) in certain monthly distributions
with respect to a Trust Fund consisting primarily of the Mortgage Loans
deposited by IndyMac MBS, Inc. (the "Depositor"). The Trust Fund was created
pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date
specified above (the "Agreement") among the Depositor, IndyMac Bank, F.S.B., as
seller and servicer (the "Seller" or the "Servicer", as appropriate), and
Deutsche Bank National Trust Company, as trustee (the "Trustee"). To the extent
not defined herein, the capitalized terms used herein have the meanings assigned
in the Agreement. This Certificate is issued

                                     F-1-2
<PAGE>

under and is subject to the terms, provisions and conditions of the Agreement,
to which Agreement the Holder of this Certificate by virtue of the acceptance
hereof assents and by which such Holder is bound.

The Certificates are limited in right of payment to certain collections and
recoveries respecting the Mortgage Loans, all as more specifically set forth
herein and in the Agreement. As provided in the Agreement, withdrawals from the
Distribution Account may be made from time to time for purposes other than
distributions to Certificateholders, such purposes including reimbursement of
advances made, or certain expenses incurred, with respect to the Mortgage Loans.

This Certificate does not have a Certificate Balance or Pass-Through Rate and
will be entitled to distributions only to the extent set forth in the Agreement.
In addition, any distribution of the proceeds of any remaining assets of the
Trust will be made only upon presentment and surrender of this Certificate at
the Corporate Trust Office or the office or agency maintained by the Trustee.

No transfer of a Certificate of this Class shall be made unless such disposition
is exempt from the registration requirements of the Securities Act of 1933, as
amended (the "1933 Act"), and any applicable state securities laws or is made in
accordance with the 1933 Act and such laws. In the event of any such transfer,
the Trustee shall require the transferor to execute a transferor certificate (in
substantially the form attached to the Pooling and Servicing Agreement) and
deliver either (i) an Investment Letter or the Rule 144A Letter, in either case
substantially in the form attached to the Agreement, or (ii) a written Opinion
of Counsel to the Trustee that such transfer may be made pursuant to an
exemption, describing the applicable exemption and the basis therefor, from the
1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel
shall be an expense of the transferor.

No transfer of a Certificate of this Class shall be made unless the Trustee
shall have received either (i) a representation letter from the transferee of
such Certificate, acceptable to and in form and substance satisfactory to the
Trustee, to the effect that such (x) transferee is not an employee benefit plan
subject to Section 406 of ERISA or Section 4975 of the Code, or a person acting
on behalf of or investing plan assets of any such plan, which representation
letter shall not be an expense of the Trustee or (y) if the Certificate has been
the subject of an ERISA-Qualifying Underwriting, a representation that the
transferee is an insurance company that is purchasing such Certificate with
funds contained in an "insurance company general account" (as such term is
defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 ("PTCE
95-60") and that the purchase and holding of such Certificate satisfy the
requirements for exemptive relief under Sections I and III of PTCE 95-60 or (ii)
in the case of a Certificate presented for registration in the name of an
employee benefit plan subject to ERISA, or a plan or arrangement subject to
Section 4975 of the Code (or comparable provisions of any subsequent
enactments), or a trustee of any such plan or any other person acting on behalf
of any such plan or arrangement or using such plan's or arrangement's assets, an
Opinion of Counsel satisfactory to the Trustee, which Opinion of Counsel shall
not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to
the Trustee and the Servicer, to the effect that the purchase and holding of
such Certificate will not result in a nonexempt prohibited transaction under
ERISA or Section 4975 of the Code and will not subject the Trustee or the
Servicer to any obligation in addition to those expressly undertaken in this
Agreement or to any liability.

Reference is hereby made to the further provisions of this Certificate set forth
on the reverse hereof, which further provisions shall for all purposes have the
same effect as if set forth at this place.

This Certificate shall not be entitled to any benefit under the Agreement or be
valid for any purpose unless manually countersigned by an authorized signatory
of the Trustee.

                                 *     *     *

                                     F-1-3
<PAGE>

     IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
executed.

Dated:  _______, ____

                                        DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                        as Trustee

                                        By _____________________________________

Countersigned:

By ___________________________
     Authorized Signatory of
     DEUTSCHE BANK NATIONAL TRUST
     COMPANY, as Trustee

                                     F-1-4
<PAGE>

                                INDYMAC MBS, INC.
                    IndyMac IMJA Mortgage Loan Trust 2007-A1
                       Mortgage Pass-Through Certificates

This Certificate is one of a duly authorized issue of Certificates designated as
IndyMac MBS, Inc. Mortgage Pass-Through Certificates, of the Series specified on
the face hereof (herein collectively called the "Certificates"), and
representing a beneficial ownership interest in the Trust Fund created by the
Agreement.

The Certificateholder, by its acceptance of this Certificate, agrees that it
will look solely to the funds on deposit in the Distribution Account for payment
hereunder and that the Trustee is not liable to the Certificateholders for any
amount payable under this Certificate or the Agreement or, except as expressly
provided in the Agreement, subject to any liability under the Agreement.

This Certificate does not purport to summarize the Agreement and reference is
made to the Agreement for the interests, rights and limitations of rights,
benefits, obligations and duties evidenced thereby, and the rights, duties and
immunities of the Trustee.

Pursuant to the terms of the Agreement, a distribution will be made on the 25th
day of each month or, if such 25th day is not a Business Day, the Business Day
immediately following (the "Distribution Date"), commencing on the first
Distribution Date specified on the face hereof, to the Person in whose name this
Certificate is registered at the close of business on the applicable Record Date
in an amount equal to the product of the Percentage Interest evidenced by this
Certificate and the amount required to be distributed to Holders of Certificates
of the Class to which this Certificate belongs on such Distribution Date
pursuant to the Agreement. The Record Date applicable to each Distribution Date
is the last Business Day of the month next preceding the month of such
Distribution Date.

Distributions on this Certificate shall be made by wire transfer of immediately
available funds to the account of the Holder hereof at a bank or other entity
having appropriate facilities therefor, if such Certificateholder shall have so
notified the Trustee in writing at least five Business Days prior to the related
Record Date and such Certificateholder shall satisfy the conditions to receive
such form of payment set forth in the Agreement, or, if not, by check mailed by
first class mail to the address of such Certificateholder appearing in the
Certificate Register. The final distribution on each Certificate will be made in
like manner, but only upon presentment and surrender of such Certificate at the
Corporate Trust Office or such other location specified in the notice to
Certificateholders of such final distribution.

The Agreement permits, with certain exceptions therein provided, the amendment
thereof and the modification of the rights and obligations of the Trustee and
the rights of the Certificateholders under the Agreement at any time by the
Depositor, the Servicer and the Trustee with the consent of the Holders of
Certificates affected by such amendment evidencing the requisite Percentage
Interest, as provided in the Agreement. Any such consent by the Holder of this
Certificate shall be conclusive and binding on such Holder and upon all future
Holders of this Certificate and of any Certificate issued upon the transfer
hereof or in exchange therefor or in lieu hereof whether or not notation of such
consent is made upon this Certificate. The Agreement also permits the amendment
thereof, in certain limited circumstances, without the consent of the Holders of
any of the Certificates.

As provided in the Agreement and subject to certain limitations therein set
forth, the transfer of this Certificate is registrable in the Certificate
Register of the Trustee upon surrender of this Certificate for registration of
transfer at the Corporate Trust Office accompanied by a written instrument of
transfer in form satisfactory to the Trustee and the Certificate Registrar duly
executed by the holder hereof or such holder's attorney duly authorized in
writing, and thereupon one or more new Certificates of the same

                                     F-1-5
<PAGE>

Class in authorized denominations and evidencing the same aggregate Percentage
Interest in the Trust Fund will be issued to the designated transferee or
transferees.

The Certificates are issuable only as registered Certificates without coupons in
denominations specified in the Agreement. As provided in the Agreement and
subject to certain limitations therein set forth, Certificates are exchangeable
for new Certificates of the same Class in authorized denominations and
evidencing the same aggregate Percentage Interest, as requested by the Holder
surrendering the same.

No service charge will be made for any such registration of transfer or
exchange, but the Trustee may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

The Depositor, the Servicer, the Seller and the Trustee and any agent of the
Depositor or the Trustee may treat the Person in whose name this Certificate is
registered as the owner hereof for all purposes, and neither the Depositor, the
Trustee, nor any such agent shall be affected by any notice to the contrary.

On any Distribution Date on which the aggregate Stated Principal Balance of the
Mortgage Loans is less than 10% of the Cut-off Date Pool Principal Balance, the
Servicer will have the option to repurchase, in whole, from the Trust Fund all
remaining Mortgage Loans and all property acquired in respect of the Mortgage
Loans at a purchase price determined as provided in the Agreement. In the event
that no such optional termination occurs, the related obligations and
responsibilities created by the Agreement will terminate upon the later of the
maturity or other liquidation (or any advance with respect thereto) of the last
Mortgage Loan remaining in the Trust Fund or the disposition of all property in
respect thereof and the distribution to Certificateholders of all amounts
required to be distributed pursuant to the Agreement. In no event, however, will
the trust created by the Agreement continue beyond the expiration of 21 years
from the death of the last survivor of the descendants living at the date of the
Agreement of a certain person named in the Agreement.

Any term used herein that is defined in the Agreement shall have the meaning
assigned in the Agreement, and nothing herein shall be deemed inconsistent with
that meaning.

                                     F-1-6
<PAGE>

                                   ASSIGNMENT
                                   ----------

     FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
                   (Please print or typewrite name and address
                     including postal zip code of assignee)

the Percentage Interest evidenced by the within Certificate and hereby
authorizes the transfer of registration of such Percentage Interest to assignee
on the Certificate Register of the Trust Fund.

     I (We) further direct the Trustee to issue a new Certificate of a like
denomination and Class, to the above named assignee and deliver such Certificate
to the following address:

_______________________________________________________________________________.

Dated:

                                       _________________________________________
                                       Signature by or on behalf of assignor

                            DISTRIBUTION INSTRUCTIONS

     The assignee should include the following for purposes of distribution:

     Distributions shall be made, by wire transfer or otherwise, in immediately
available funds to______________________________________________________________
_______________________________________________________________________________,
for the account of ___________________________, account number                 ,
or, if mailed by check, to _____________________________________________________
_______________________________________________________________________________.
Applicable statements should be mailed to ______________________________________
________________________________________________________________________________
________________________________________________________________________________

     This information is provided by __________________________________________,
the assignee named above, or __________________________________________________,
as its agent.

                                     F-1-7
<PAGE>

STATE OF ___________________      )
                                  )  ss.:
COUNTY OF __________________      )

          On the __th day of __________, 20__ before me, a notary public in and
for said State, personally appeared ____________________, known to me who, being
by me duly sworn, did depose and say that he executed the foregoing instrument.

                                                ________________________________
                                                          Notary Public

[Notarial Seal]

                                     F-1-8
<PAGE>

                                   Exhibit F-2

                          [FORM OF CLASS L CERTIFICATE]

THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE "ACT"). ANY RESALE OR TRANSFER OF THIS CERTIFICATE WITHOUT
REGISTRATION THEREOF UNDER THE ACT MAY ONLY BE MADE IN A TRANSACTION EXEMPTED
FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE
PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.

NEITHER THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS THE
TRANSFEREE DELIVERS TO THE TRUSTEE EITHER A REPRESENTATION LETTER TO THE EFFECT
THAT SUCH TRANSFEREE IS NOT, AND IS NOT INVESTING ON BEHALF OF OR WITH PLAN
ASSETS OF, AN EMPLOYEE BENEFIT PLAN SUBJECT TO THE EMPLOYEE RETIREMENT INCOME
SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR A PLAN OR ARRANGEMENT SUBJECT TO
SECTION 4975 OF THE CODE, OR IF THE TRANSFEREE IS AN INSURANCE COMPANY AND THE
CERTIFICATES HAVE BEEN THE SUBJECT OF AN ERISA QUALIFYING UNDERWRITING, A
REPRESENTATION IN ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO
HEREIN OR AN OPINION OF COUNSEL IN ACCORDANCE WITH THE PROVISIONS OF THE
AGREEMENT REFERRED TO HEREIN. NOTWITHSTANDING ANYTHING ELSE TO THE CONTRARY
HEREIN, ANY PURPORTED TRANSFER OF THIS CERTIFICATE TO OR ON BEHALF OF AN
EMPLOYEE BENEFIT PLAN OR ARRANGEMENT SUBJECT TO ERISA OR TO SECTION 4975 OF THE
CODE WITHOUT THE OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE AS DESCRIBED
ABOVE SHALL BE VOID AND OF NO EFFECT.

                                     F-2-1
<PAGE>

Certificate No.              :

Cut-off Date                 :

First Distribution Date      :

Percentage Interest
of this Certificate
("Denomination")             :     %

CUSIP                        :

ISIN                         :

Interest Rate                :     Not Applicable

Maturity Date                :     Not Applicable

                                INDYMAC MBS, INC.
                    IndyMac IMJA Mortgage Loan Trust 2007-A1
               Mortgage Pass-Through Certificates, Series 2007-A1

                                     Class L

       evidencing a percentage interest in the distributions allocable to the
       Certificates of the above-referenced Class with respect to a Trust Fund
       consisting primarily of a pool of 30-year conventional fixed-rate
       mortgage loans (the "Mortgage Loans") secured by first liens on one- to
       four-family residential properties.

Distributions in respect of this Certificate are distributable monthly as set
forth herein. Accordingly, the Certificate Balance at any time may be less than
the Certificate Balance as set forth herein. This Certificate does not evidence
an obligation of, or an interest in, and is not guaranteed by the Depositor, the
Seller, the Servicer or the Trustee referred to below or any of their respective
affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or
insured by any governmental agency or instrumentality.

This certifies that ________________ is the registered owner of the Percentage
Interest evidenced by this Certificate (obtained by dividing the denomination of
this Certificate by the aggregate of the denominations of all Certificates of
the Class to which this Certificate belongs) in certain monthly distributions
with respect to a Trust Fund consisting primarily of the Mortgage Loans
deposited by IndyMac MBS, Inc. (the "Depositor"). The Trust Fund was created
pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date
specified above (the "Agreement") among the Depositor, IndyMac Bank, F.S.B., as
seller and servicer (the "Seller" or the "Servicer", as appropriate), and
Deutsche Bank National Trust Company, as trustee (the "Trustee"). To the extent
not defined herein, the capitalized terms used herein have the meanings assigned
in the Agreement. This Certificate is issued

                                     F-2-2
<PAGE>

under and is subject to the terms, provisions and conditions of the Agreement,
to which Agreement the Holder of this Certificate by virtue of the acceptance
hereof assents and by which such Holder is bound.

The Certificates are limited in right of payment to certain collections and
recoveries respecting the Mortgage Loans, all as more specifically set forth
herein and in the Agreement. As provided in the Agreement, withdrawals from the
Distribution Account may be made from time to time for purposes other than
distributions to Certificateholders, such purposes including reimbursement of
advances made, or certain expenses incurred, with respect to the Mortgage Loans.

This Certificate does not have a Certificate Balance or Pass-Through Rate and
will be entitled to distributions only to the extent set forth in the Agreement.
In addition, any distribution of the proceeds of any remaining assets of the
Trust will be made only upon presentment and surrender of this Certificate at
the Corporate Trust Office or the office or agency maintained by the Trustee.

No transfer of a Certificate of this Class shall be made unless such disposition
is exempt from the registration requirements of the Securities Act of 1933, as
amended (the "1933 Act"), and any applicable state securities laws or is made in
accordance with the 1933 Act and such laws. In the event of any such transfer,
the Trustee shall require the transferor to execute a transferor certificate (in
substantially the form attached to the Pooling and Servicing Agreement) and
deliver either (i) an Investment Letter or the Rule 144A Letter, in either case
substantially in the form attached to the Agreement, or (ii) a written Opinion
of Counsel to the Trustee that such transfer may be made pursuant to an
exemption, describing the applicable exemption and the basis therefor, from the
1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel
shall be an expense of the transferor.

No transfer of a Certificate of this Class shall be made unless the Trustee
shall have received either (i) a representation letter from the transferee of
such Certificate, acceptable to and in form and substance satisfactory to the
Trustee, to the effect that such transferee is not an employee benefit plan or
arrangement subject to Section 406 of ERISA or Section 4975 of the Code, or a
person investing on behalf of or with plan assets of any such plan, which
representation letter shall not be an expense of the Trustee, or (ii) if the
transferee is an insurance company and the Certificates have been the subject of
an ERISA-Qualifying Underwriting, a representation that the purchaser is an
insurance company which is purchasing such Certificates with funds contained in
an "insurance company general account" (as such term is defined in Section V(e)
of Prohibited Transaction Class Exemption 95-60 ("PTCE 95-60")) and that the
purchase and holding of such Certificates are covered under Sections I and III
of PTCE 95-60, or (iii) in the case of a Certificate presented for registration
in the name of an employee benefit plan or arrangement subject to ERISA, or a
plan or arrangement subject to Section 4975 of the Code (or comparable
provisions of any subsequent enactments), or a trustee of any such plan or
arrangement or any other person acting on behalf of any such plan or arrangement
or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory
to the Trustee and addressed to the Trustee and the Servicer, which Opinion of
Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund,
to the effect that the purchase and holding of such Certificate will not result
in a non-exempt prohibited transaction under Section 406 of ERISA or Section
4975 of the Code and will not subject the Trustee or the Servicer to any
obligation in addition to those expressly undertaken in this Agreement or to any
liability. If no written representation or Opinion of Counsel as described above
is delivered to the Trustee, the representation in (i) or (ii) above, as
appropriate, shall be deemed to have been made to the Trustee by the
Transferee's acceptance of this Certificate and by a beneficial owner's
acceptance of its interest in such Certificate. Notwithstanding anything else to
the contrary herein, any purported transfer of a Certificate of this Class to or
on behalf of an employee benefit plan or arrangement subject to ERISA or to the
Code without the Opinion of Counsel satisfactory to the Trustee as described
above shall be void and of no effect.

                                     F-2-3
<PAGE>

Reference is hereby made to the further provisions of this Certificate set forth
on the reverse hereof, which further provisions shall for all purposes have the
same effect as if set forth at this place.

This Certificate shall not be entitled to any benefit under the Agreement or be
valid for any purpose unless manually countersigned by an authorized signatory
of the Trustee.

                                     F-2-4
<PAGE>

     IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
executed.

Dated:  _______, ____

                                        DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                        as Trustee

                                        By _____________________________________

Countersigned:

By ___________________________
     Authorized Signatory of
     DEUTSCHE BANK NATIONAL TRUST
     COMPANY, as Trustee

                                     F-2-5
<PAGE>

                                   EXHIBIT G-1

                    FORM OF INITIAL CERTIFICATION OF TRUSTEE

                                     [date]

[Depositor]

[Servicer]

[Seller]
_________________
_________________

          Re:  Pooling and Servicing Agreement among IndyMac MBS, Inc., as
               Depositor, IndyMac Bank, F.S.B., as Seller and Servicer, and
               Deutsche Bank National Trust Company, as Trustee, IndyMac IMJA
               Mortgage Loan Trust 2007-A1 Mortgage Pass-Through Certificates,
               Series 2007-A1
               ---------------------------------------------------------------

Gentlemen:

     In accordance with Section 2.02 of the above-captioned Pooling and
Servicing Agreement (the "Pooling and Servicing Agreement"), the undersigned, as
Trustee, hereby certifies that, as to each Mortgage Loan listed in the Mortgage
Loan Schedule (other than any Mortgage Loan listed in the attached schedule), it
has received:

     (i) the original Mortgage Note, endorsed as provided in the following form:
"Pay to the order of ________, without recourse"; and

     (ii) an executed assignment of the Mortgage (which may be included in a
blanket assignment or assignments); provided, however, that it has received no
assignment with respect to any Mortgage for which the Mortgaged Property is
located in the Commonwealth of Puerto Rico.

     Based on its review and examination and only as to the foregoing documents,
such documents appear regular on their face and to such Mortgage Loan.

          The Trustee has made no independent examination of any documents
contained in each Mortgage File beyond the review specifically required in the
Pooling and Servicing Agreement. The Trustee makes no representations as to: (i)
the validity, legality, sufficiency, enforceability or genuineness of any of the
documents contained in each Mortgage File of any of the Mortgage Loans
identified on the Mortgage Loan Schedule, or (ii) the collectability,
insurability, effectiveness or suitability of any such Mortgage Loan.

          Capitalized words and phrases used herein shall have the respective
meanings assigned to them in the Pooling and Servicing Agreement.

                                     G-1-1
<PAGE>

                                        DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                          as Trustee

                                        By:_____________________________________
                                             Name:
                                             Title:

                                     G-1-2
<PAGE>

                                   EXHIBIT G-2

              FORM OF DELAY DELIVERY CERTIFICATION (MORTGAGE LOANS)

                                     [date]

[Depositor]

[Servicer]

[Seller]
___________________
___________________

          Re:  Pooling and Servicing Agreement among IndyMac MBS, Inc., as
               Depositor, IndyMac Bank, F.S.B., as Seller and Servicer, and
               Deutsche Bank National Trust Company, as Trustee, IndyMac IMJA
               Mortgage Loan Trust 2007-A1 Mortgage Pass-Through Certificates,
               Series 2007-A1
               ---------------------------------------------------------------

Gentlemen:

     Reference is made to the Initial Certification of Trustee relating to the
above-referenced series, with the schedule of exceptions attached thereto (the
"Schedule A"), delivered by the undersigned, as Trustee, on the Closing Date in
accordance with Section 2.02 of the above-captioned Pooling and Servicing
Agreement (the "Pooling and Servicing Agreement"). The undersigned hereby
certifies that, as to each Delay Delivery Mortgage Loan listed on Schedule A
attached hereto (other than any Mortgage Loan paid in full or listed on Schedule
B attached hereto) it has received:

     (i)    the original Mortgage Note, endorsed by the Seller or the originator
            of such Mortgage Loan, without recourse in the following form: "Pay
            to the order of _______________ without recourse", with all
            intervening endorsements that show a complete chain of endorsement
            from the originator to the Seller, or, if the original Mortgage Note
            has been lost or destroyed and not replaced, an original lost note
            affidavit from the Seller, stating that the original Mortgage Note
            was lost or destroyed, together with a copy of the Mortgage Note;

     (ii)   the original recorded Mortgage;

     (iii)  an executed assignment of the Mortgage to "Deutsche Bank National
            Trust Company, as trustee under the Pooling and Servicing Agreement
            dated as of June 1, 2007, without recourse" (each such assignment,
            when duly and validly completed, to be in recordable form and
            sufficient to effect the assignment of and transfer to the assignee
            thereof, under the Mortgage to which such assignment relates);

     (iv)   the original recorded assignment or assignments of the Mortgage
            together with all interim recorded assignments of such Mortgage;

                                     G-2-1
<PAGE>

     (v)    the original or copies of each assumption, modification, written
            assurance or substitution agreement, if any, with evidence of
            recording thereon if recordation thereof is permissible under
            applicable law; and

     (vi)   the original or duplicate original lender's title policy and all
            riders, if any, thereto or, in the event such original title policy
            has not been received from the insurer, any one of an original title
            binder, an original preliminary title report or an original title
            commitment, or a copy thereof certified by the title company, with
            the original policy of title insurance to be delivered within one
            year of the Closing Date.

     In the event that in connection with any Mortgage Loan for which the Seller
cannot deliver the original recorded Mortgage or all interim recorded
assignments of the Mortgage satisfying the requirements of clause (ii), (iii) or
(iv), as applicable, the Trustee has received, in lieu thereof, a true and
complete copy of such Mortgage and/or such assignment or assignments of the
Mortgage, as applicable, each certified by the Seller, the applicable title
company, escrow agent or attorney, or the originator of such Mortgage Loan, as
the case may be, to be a true and complete copy of the original Mortgage or
assignment of Mortgage submitted for recording.

     Based on its review and examination and only as to the foregoing documents,
(i) such documents appear regular on their face and related to such Mortgage
Loan, and (ii) the information set forth in items (i), (iv), (vi) and (xi) of
the definition of the "Mortgage Loan Schedule" in Section 1.01 of the Pooling
and Servicing Agreement accurately reflects information set forth in the
Mortgage File.

     The Trustee has made no independent examination of any documents contained
in each Mortgage File beyond the review specifically required in the
above-referenced Pooling and Servicing Agreement. The Trustee makes no
representations as to: (i) the validity, legality, sufficiency, enforceability
or genuineness of any of the documents contained in each Mortgage File of any of
the Mortgage Loans identified on the [Mortgage Loan Schedule][Loan Number and
Borrower Identification Mortgage Loan Schedule] or (ii) the collectability,
insurability, effectiveness or suitability of any such Mortgage Loan.

     Capitalized words and phrases used herein shall have the respective
meanings assigned to them in the Pooling and Servicing Agreement.

                                        DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                          as Trustee

                                        By:_____________________________________
                                             Name:
                                             Title:

                                     G-2-2
<PAGE>

                                    EXHIBIT H

                     FORM OF FINAL CERTIFICATION OF TRUSTEE

                                     [date]

[Depositor]

[Servicer]

[Seller]
_____________________
_____________________

          Re:  Pooling and Servicing Agreement among IndyMac MBS, Inc., as
               Depositor, IndyMac Bank, F.S.B., as Seller and Servicer, and
               Deutsche Bank National Trust Company, as Trustee, IndyMac IMJA
               Mortgage Loan Trust 2007-A1 Mortgage Pass-Through Certificates,
               Series 2007-A1
               ---------------------------------------------------------------

Gentlemen:

     In accordance with Section 2.02 of the above-captioned Pooling and
Servicing Agreement (the "Pooling and Servicing Agreement"), the undersigned, as
Trustee, hereby certifies that as to each Mortgage Loan listed in the Mortgage
Loan Schedule (other than any Mortgage Loan paid in full or listed on the
attached Document Exception Report) it has received:

     (i) The original Mortgage Note, endorsed in the form provided in Section
2.01(c) of the Pooling and Servicing Agreement, with all intervening
endorsements showing a complete chain of endorsement from the originator to the
Seller.

     (ii) The original recorded Mortgage.

     (iii) An executed assignment of the Mortgage in the form provided in
Section 2.01(c) of the Pooling and Servicing Agreement; provided, however, that
it has received no assignment with respect to any Mortgage for which the
Mortgaged Property is located in the Commonwealth of Puerto Rico, or, if the
Depositor has certified or the Trustee otherwise knows that the Mortgage has not
been returned from the applicable recording office, a copy of the assignment of
the Mortgage (excluding information to be provided by the recording office).

     (iv) The original or duplicate original recorded assignment or assignments
of the Mortgage showing a complete chain of assignment from the originator to
the Seller.

     (v) The original or duplicate original lender's title policy and all riders
thereto or, any one of an original title binder, an original preliminary title
report or an original title commitment, or a copy thereof certified by the title
company.

     Based on its review and examination and only as to the foregoing documents,
(a) such documents appear regular on their face and related to such Mortgage
Loan, and (b) the information set forth in items

                                      H-1
<PAGE>

(i), (ii), (iii), (iv), (vi) and (xi) of the definition of the "Mortgage Loan
Schedule" in Section 1.01 of the Pooling and Servicing Agreement accurately
reflects information set forth in the Mortgage File.

     The Trustee has made no independent examination of any documents contained
in each Mortgage File beyond the review specifically required in the Pooling and
Servicing Agreement. The Trustee makes no representations as to: (i) the
validity, legality, sufficiency, enforceability or genuineness of any of the
documents contained in each Mortgage File of any of the Mortgage Loans
identified on the Mortgage Loan Schedule, or (ii) the collectability,
insurability, effectiveness or suitability of any such Mortgage Loan.
Notwithstanding anything herein to the contrary, the Trustee has made no
determination and makes no representations as to whether (i) any endorsement is
sufficient to transfer all right, title and interest of the party so endorsing,
as noteholder or assignee thereof, in and to that Mortgage Note or (ii) any
assignment is in recordable form or sufficient to effect the assignment of and
transfer to the assignee thereof, under the Mortgage to which the assignment
relates.

     Capitalized words and phrases used herein shall have the respective
meanings assigned to them in the Pooling and Servicing Agreement.

                                        DEUTSCHE BANK NATIONAL TRUST COMPANY,
                                          as Trustee

                                        By:_____________________________________
                                             Name:
                                             Title:

                                      H-2
<PAGE>

                                    EXHIBIT I

                               TRANSFER AFFIDAVIT

                                IndyMac MBS, Inc.
                    IndyMac IMJA Mortgage Loan Trust 2007-A1
                       Mortgage Pass-Through Certificates
                                 Series 2007-A1

STATE OF CALIFORNIA         )
                            :  ss.:
COUNTY OF _____________     )

     The undersigned, being first duly sworn, deposes and says as follows:

     1. The undersigned is an officer of , the proposed Transferee of an
Ownership Interest in a Class A-R Certificate (the "Certificate") issued
pursuant to the Pooling and Servicing Agreement, (the "Agreement"), relating to
the above-referenced Series, by and among IndyMac MBS, Inc., as depositor (the
"Depositor"), IndyMac Bank, F.S.B., as seller and servicer and Deutsche Bank
National Trust Company, as Trustee. Capitalized terms used, but not defined
herein or in Exhibit 1 hereto, shall have the meanings ascribed to such terms in
the Agreement. The Transferee has authorized the undersigned to make this
affidavit on behalf of the Transferee.

     2. The Transferee is, as of the date hereof, and will be, as of the date of
the Transfer, a Permitted Transferee. The Transferee is acquiring its Ownership
Interest in the Certificate for its own account.

     3. The Transferee has been advised of, and understands that (i) a tax will
be imposed on Transfers of the Certificate to Persons that are not Permitted
Transferees; (ii) such tax will be imposed on the transferor, or, if such
Transfer is through an agent (which includes a broker, nominee or middleman) for
a Person that is not a Permitted Transferee, on the agent; and (iii) the Person
otherwise liable for the tax shall be relieved of liability for the tax if the
subsequent Transferee furnished to such Person an affidavit that such subsequent
Transferee is a Permitted Transferee and, at the time of Transfer, such Person
does not have actual knowledge that the affidavit is false.

     4. The Transferee has been advised of, and understands that a tax will be
imposed on a "pass-through entity" holding the Certificate if at any time during
the taxable year of the pass-through entity a Person that is not a Permitted
Transferee is the record holder of an interest in such entity. The Transferee
understands that such tax will not be imposed for any period with respect to
which the record holder furnishes to the pass-through entity an affidavit that
such record holder is a Permitted Transferee and the pass-through entity does
not have actual knowledge that such affidavit is false. (For this purpose, a
"pass-through entity" includes a regulated investment company, a real estate
investment trust or common trust fund, a partnership, trust or estate, and
certain cooperatives and, except as may be provided in Treasury Regulations,
persons holding interests in pass-through entities as a nominee for another
Person.)

     5. The Transferee has reviewed the provisions of Section 5.02(c) of the
Agreement (attached hereto as Exhibit 2 and incorporated herein by reference)
and understands the legal consequences of the acquisition of an Ownership
Interest in the Certificate including, without limitation, the restrictions on
subsequent Transfers and the provisions regarding voiding the Transfer and
mandatory

                                      I-1
<PAGE>

sales. The Transferee expressly agrees to be bound by and to abide by the
provisions of Section 5.02(c) of the Agreement and the restrictions noted on the
face of the Certificate. The Transferee understands and agrees that any breach
of any of the representations included herein shall render the Transfer to the
Transferee contemplated hereby null and void.

     6. The Transferee agrees to require a Transfer Affidavit from any Person to
whom the Transferee attempts to Transfer its Ownership Interest in the
Certificate, and in connection with any Transfer by a Person for whom the
Transferee is acting as nominee, trustee or agent, and the Transferee will not
Transfer its Ownership Interest or cause any Ownership Interest to be
Transferred to any Person that the Transferee knows is not a Permitted
Transferee. In connection with any such Transfer by the Transferee, the
Transferee agrees to deliver to the Trustee a certificate substantially in the
form set forth as Exhibit J to the Agreement (a "Transferor Certificate") to the
effect that such Transferee has no actual knowledge that the Person to which the
Transfer is to be made is not a Permitted Transferee.

     7. The Transferee does not have the intention to impede the assessment or
collection of any tax legally required to be paid with respect to the
Certificate.

     8. The Transferee's taxpayer identification number is .

     9. [Reserved].

     10. The Transferee is a U.S. Person as defined in Code Section 7701(a)(30).

     11. The Transferee is aware that the Certificate may be a "noneconomic
residual interest" within the meaning of proposed Treasury regulations
promulgated pursuant to the Code and that the transferor of a noneconomic
residual interest will remain liable for any taxes due with respect to the
income on such residual interest, unless no significant purpose of the transfer
was to impede the assessment or collection of tax.

     12. The Transferee is not a foreign permanent establishment or fixed base
(within the meaning of an applicable income tax treaty) of a U.S. taxpayer.

     13. The Transferee will not transfer the Certificates, directly or
indirectly, to a foreign permanent establishment or fixed base (within the
meaning of an applicable income tax treaty) of the Transferee or another U.S.
taxpayer.

     14. The Transferee will not cause income from the Certificates to be
attributable to a foreign permanent establishment or fixed base (within the
meaning of an applicable income tax treaty) of the Transferee or another U.S.
taxpayer.

     15. Either:

          (a) (i) At the time of the transfer, and at the close of each of the
     Transferee's two fiscal years preceding the Transferee's fiscal year of
     transfer, the Transferee's gross assets for financial reporting purposes
     exceed $100 million and its net assets for financial reporting purposes
     exceed $10 million. For purposes of the preceding sentence, the gross
     assets and net assets of a Transferee do not include any obligation of any
     Related Person, as defined below, or any other asset if a principal purpose
     for holding or acquiring the other asset is to permit the Transferee to
     satisfy the conditions of this paragraph 15(a); (ii) The Transferee is an
     Eligible Corporation, as defined below, and hereby agrees that any
     subsequent transfer of the interest will be to another Eligible Corporation
     in a transaction that satisfies this Transfer Affidavit, including this

                                      I-2
<PAGE>

     paragraph 15(a); and (iii) The Transferee has not given the Transferor any
     reason to know that the Transferee will not honor the restrictions on
     subsequent transfers of the residual interest or that the Transferee cannot
     or will not pay any taxes associated with the residual interest; or

          (b)(i) The Transferee is a United States Person; (ii) The present
     value of the anticipated tax liabilities associated with holding the
     residual interest does not exceed the sum of: (A) The present value of any
     consideration given to the Transferee to acquire the interest; (B) The
     present value of the expected future distributions on the interest; and (C)
     The present value of the anticipated tax savings associated with holding
     the interest as any REMIC generates losses; and (iii) For purposes of
     calculating the aforementioned present values: (A) The transferee has
     assumed that it pays tax at a rate equal to the highest rate of tax
     specified in Code Section 11(b)(1) (unless the Transferee has been subject
     to the alternative minimum tax under Code Section 55 in the preceding two
     years and will compute its taxable income in the current taxable year using
     the alternative minimum tax rate, in which case the Transferee can assume
     that it pays tax at the rate specified in Code Section 55(b)(1)(B) provided
     the Transferee states in this Transfer Affidavit that it is using such
     alternate rate and that has been subject to the alternative minimum tax
     under Code Section 55 in the preceding two years and will compute its
     taxable income in the current taxable year using the alternative minimum
     tax rate):and (B) The Transferee uses a discount rate equal to the Federal
     short-term rate prescribed by section 1274(d) for the month of the transfer
     and the compounding period used by the Transferee.

     The term "Eligible Corporation" means any domestic C corporation (as
defined in section 1361(a)(2) of the Code) other than a corporation which is
exempt from, or is not subject to, tax under section 11 of the Code, an entity
described in section 851(a) or 856(a) of the Code, a REMIC; or an organization
to which part I, subchapter T, chapter 1, subtitle A of the Code applies. The
Term "Related Person" means any person that bears a relationship to the
Transferee enumerated in section 267(b) or 707(b)(1) of the Code, using "20
percent" instead of "50 percent" where it appears under the provisions; or is
under common control (within the meaning of section 52(a) and (b) of the Code)
with the Transferee.

     16. Either (i) the Transferee is not an employee benefit plan that is
subject to ERISA or a plan that is subject to Section 4975 of the Code, and the
Transferee is not acting on behalf of or with plan assets of such a plan; or
(ii) the Transferee is an insurance company that is investing funds contained in
an "insurance company general account" (as such term is defined in Section V(e)
of Prohibited Transaction Class Exemption 95-60 ("PTCE 95-60") and the purchase
and holding of the Class A-R Certificate satisfy the requirements for exemptive
relief under Sections I and III of PTCE 95-60.

                                  *    *    *

                                      I-3
<PAGE>

     IN WITNESS WHEREOF, the Transferee has caused this instrument to be
executed on its behalf, pursuant to authority of its Board of Directors, by its
duly authorized officer and its corporate seal to be hereunto affixed, duly
attested, this ___ day of ____________, 20__.

                                   _____________________________________________
                                       Print Name of Transferee

                                   By:__________________________________________
                                        Name:
                                        Title:

[Corporate Seal]

ATTEST:

[Assistant] Secretary

     Personally appeared before me the above-named ____________________________,
known or proved to me to be the same person who executed the foregoing
instrument and to be the ___________________ of the Transferee, and acknowledged
that he executed the same as his free act and deed and the free act and deed of
the Transferee.

     Subscribed and sworn before me this ___ day of ________, 20__.

                                        _______________________________
                                        NOTARY PUBLIC

                                        My Commission expires the ______ day
                                        of ____________, 20__.

                                      I-4
<PAGE>

                                                                       EXHIBIT 1
                                                                    to EXHIBIT I

                               Certain Definitions
                               -------------------

     "Ownership Interest": As to any Certificate, any ownership interest in such
Certificate, including any interest in such Certificate as the Holder thereof
and any other interest therein, whether direct or indirect, legal or beneficial.

     "Permitted Transferee": Any Person other than (i) the United States, any
State or political subdivision thereof, or any agency or instrumentality of any
of the foregoing, (ii) a foreign government, International Organization or any
agency or instrumentality of either of the foregoing, (iii) an organization
(except certain farmers' cooperatives described in Code Section 521) which is
exempt from tax imposed by Chapter 1 of the Code (including the tax imposed by
Code Section 511 on unrelated business taxable income) on any excess inclusions
(as defined in Code Section 860E(c)(1)) with respect to any Class A-R
Certificate, (iv) rural electric and telephone cooperatives described in Code
Section 1381(a)(2)(c), (v) a Person that is not a citizen or resident of the
United States, a corporation, partnership, or other entity created or organized
in or under the laws of the United States or any political subdivision thereof,
or an estate or trust whose income from sources without the United States is
includible in gross income for federal income tax purposes regardless of its
connection with the conduct of a trade or business within the United States, and
(vi) any other Person so designated by the Depositor based upon an Opinion of
Counsel that the Transfer of an Ownership Interest in a Class A-R Certificate to
such Person may cause the Trust Fund to fail to qualify as a REMIC at any time
that certain Certificates are Outstanding. The terms "United States," "State"
and "International Organization" shall have the meanings set forth in Code
Section 7701 or successor provisions. A corporation will not be treated as an
instrumentality of the United States or of any State or political subdivision
thereof if all of its activities are subject to tax, and, with the exception of
the FHLMC, a majority of its board of directors is not selected by such
governmental unit.

     "Person": Any individual, corporation, partnership, joint venture, bank,
joint stock company, trust (including any beneficiary thereof), unincorporated
organization or government or any agency or political subdivision thereof.

     "Transfer": Any direct or indirect transfer or sale of any Ownership
Interest in a Certificate, including the acquisition of a Certificate by the
Depositor.

     "Transferee": Any Person who is acquiring by Transfer any Ownership
Interest in a Certificate.

                                      I-5
<PAGE>

                                                                       EXHIBIT 2
                                                                    to EXHIBIT I

                        Section 5.02(c) of the Agreement
                                --

          (c) Each Person who has or who acquires any Ownership Interest in a
Residual Certificate shall be deemed by the acceptance or acquisition of such
Ownership Interest to have agreed to be bound by the following provisions, and
the rights of each Person acquiring any Ownership Interest in a Residual
Certificate are expressly subject to the following provisions:

               (i) Each Person holding or acquiring any Ownership Interest in a
          Residual Certificate shall be a Permitted Transferee and shall
          promptly notify the Trustee of any change or impending change in its
          status as a Permitted Transferee.

               (ii) No Ownership Interest in a Residual Certificate may be
          registered on the Closing Date or thereafter transferred, and the
          Trustee shall not register the Transfer of any Residual Certificate
          unless, in addition to the certificates required to be delivered to
          the Trustee under subparagraph (b) above, the Trustee shall have been
          furnished with an affidavit (a "Transfer Affidavit") of the initial
          owner or the proposed transferee in the form attached hereto as
          Exhibit I.

               (iii) Each Person holding or acquiring any Ownership Interest in
          a Residual Certificate shall agree (A) to obtain a Transfer Affidavit
          from any other Person to whom such Person attempts to Transfer its
          Ownership Interest in a Residual Certificate, (B) to obtain a Transfer
          Affidavit from any Person for whom such Person is acting as nominee,
          trustee or agent in connection with any Transfer of a Residual
          Certificate and (C) not to Transfer its Ownership Interest in a
          Residual Certificate or to cause the Transfer of an Ownership Interest
          in a Residual Certificate to any other Person if it has actual
          knowledge that such Person is not a Permitted Transferee.

               (iv) Any attempted or purported Transfer of any Ownership
          Interest in a Residual Certificate in violation of the provisions of
          this Section 5.02(c) shall be absolutely null and void and shall vest
          no rights in the purported Transferee. If any purported transferee
          shall become a Holder of a Residual Certificate in violation of the
          provisions of this Section 5.02(c), then the last preceding Permitted
          Transferee shall be restored to all rights as Holder thereof
          retroactive to the date of registration of Transfer of such Residual
          Certificate. The Trustee shall be under no liability to any Person for
          any registration of Transfer of a Residual Certificate that is in fact
          not permitted by Section 5.02(b) and this Section 5.02(c) or for
          making any payments due on such Certificate to the Holder thereof or
          taking any other action with respect to such Holder under the
          provisions of this Agreement so long as the Transfer was registered
          after receipt of the Transfer Affidavit, Transferor Certificate and
          either the Rule 144A Letter or the Investment Letter. The Trustee
          shall be entitled but not obligated to recover from any Holder of a
          Residual Certificate that was in fact not a Permitted Transferee at
          the time it became a Holder or, at such subsequent time as it became
          other than a Permitted Transferee, all payments made on such Residual
          Certificate at and after either such time. Any such payments so
          recovered by the Trustee shall be paid and delivered by the Trustee to
          the last preceding Permitted Transferee of such Certificate.

                                      I-6
<PAGE>

               (v) The Depositor shall use its best efforts to make available,
          upon receipt of written request from the Trustee, all information
          necessary to compute any tax imposed under Section 860E(e) of the Code
          as a result of a Transfer of an Ownership Interest in a Residual
          Certificate to any Holder who is not a Permitted Transferee.

                                      I-7
<PAGE>

                                    EXHIBIT J

                         FORM OF TRANSFEROR CERTIFICATE

                                                               __________, 200__

IndyMac MBS, Inc.
155 North Lake Avenue, 7th Floor
Pasadena, CA  91101
Attention:  Secondary Marketing, Transaction Management

DB Services Tennessee
648 Grassmere Park Road
Nashville, TN 37211-3658
Attention:  Transfer Unit, Series 200 -

             Re:   IndyMac MBS, Inc.
                   IndyMac IMJA Mortgage Loan Trust 2007-A1
                   Mortgage Pass-Through Certificates, Series 2007-A1, Class
                   ---------------------------------------------------------

Ladies and Gentlemen:

           In connection with our disposition of the above Certificates we
certify that (a) we understand that the Certificates have not been registered
under the Securities Act of 1933, as amended (the "Act"), and are being disposed
by us in a transaction that is exempt from the registration requirements of the
Act, (b) we have not offered or sold any Certificates to, or solicited offers to
buy any Certificates from, any person, or otherwise approached or negotiated
with any person with respect thereto, in a manner that would be deemed, or taken
any other action which would result in, a violation of Section 5 of the Act and
(c) to the extent we are disposing of a Class A-R Certificate, we have no
knowledge the Transferee is not a Permitted Transferee.

                                                Very truly yours,

                                                ______________________________
                                                Print Name of Transferor

                                                By: __________________________
                                                        Authorized Officer

                                      J-1
<PAGE>

                                    EXHIBIT K

                    FORM OF INVESTMENT LETTER (NON-RULE 144A)

                                                               __________, 200__

IndyMac MBS, Inc.
155 North Lake Avenue, 7th Floor
Pasadena, CA  91101
Attention:  Secondary Marketing, Transaction Management

DB Services Tennessee
648 Grassmere Park Road
Nashville, TN 37211-3658
Attention:  Transfer Unit, Series 200 -

              Re:  IndyMac MBS, Inc.
                   IndyMac IMJA Mortgage Loan Trust 2007-A1
                   Mortgage Pass-Through Certificates, Series 2007-A1, Class
                   ---------------------------------------------------------

Ladies and Gentlemen:

         In connection with our acquisition of the above-referenced Certificates
we certify that (a) we understand that the Certificates are not being registered
under the Securities Act of 1933, as amended (the "Act"), or any state
securities laws and are being transferred to us in a transaction that is exempt
from the registration requirements of the Act and any such laws, (b) we are an
"accredited investor," as defined in Regulation D under the Act, and have such
knowledge and experience in financial and business matters that we are capable
of evaluating the merits and risks of investments in the Certificates, (c) we
have had the opportunity to ask questions of and receive answers from the
Depositor concerning the purchase of the Certificates and all matters relating
thereto or any additional information deemed necessary to our decision to
purchase the Certificates, (d) either (i) we are not an employee benefit plan
that is subject to the Employee Retirement Income Security Act of 1974, as
amended, or a plan or arrangement that is subject to Section 4975 of the
Internal Revenue Code of 1986, as amended, nor are we acting on behalf of any
such plan or arrangement or using the assets of any such plan or arrangement to
effect such acquisition or (ii) [if the Certificate has been the subject of an
ERISA-Qualifying Underwriting,] we are an insurance company which is purchasing
such Certificates with funds contained in an "insurance company general account"
(as such term is defined in Section V(e) of Prohibited Transaction Class
Exemption 95-60 ("PTCE 95-60")) and the purchase and holding of such
Certificates are covered under Sections I and III of PTCE 95-60, (e) we are
acquiring the Certificates for investment for our own account and not with a
view to any distribution of such Certificates (but without prejudice to our
right at all times to sell or otherwise dispose of the Certificates in
accordance with clause (g) below), (f) we have not offered or sold any
Certificates to, or solicited offers to buy any Certificates from, any person,
or otherwise approached or negotiated with any person with respect thereto, or
taken any other action which would result in a violation of Section 5 of the
Act, and (g) we will not sell, transfer or otherwise dispose of any Certificates
unless (1) such sale, transfer or other disposition is made pursuant to an
effective registration statement under the Act or is exempt from such
registration requirements, and if requested, we will at our expense provide an
opinion of counsel satisfactory to the addressees of this Certificate that such
sale, transfer or other disposition may be made pursuant to an exemption from
the Act, (2) the purchaser or transferee of such Certificate has executed and
delivered to you a certificate to substantially

                                      K-1
<PAGE>

the same effect as this certificate, and (3) the purchaser or transferee has
otherwise complied with any conditions for transfer set forth in the Pooling and
Servicing Agreement.

                                                Very truly yours,

                                                ______________________________
                                                Print Name of Transferee

                                                By: __________________________
                                                        Authorized Officer

                                      K-2
<PAGE>

                                    EXHIBIT L

                            FORM OF RULE 144A LETTER

                                                             ____________, 200__

IndyMac MBS, Inc.
155 North Lake Avenue, 7th Floor
Pasadena, CA  91101
Attention:  Secondary Marketing, Transaction Management

DB Services Tennessee
648 Grassmere Park Road
Nashville, TN 37211-3658
Attention:  Transfer Unit, Series 200 -

              Re:  IndyMac MBS, Inc.
                   IndyMac IMJA Mortgage Loan Trust 2007-A1
                   Mortgage Pass-Through Certificates, Series 2007-A1, Class
                   ---------------------------------------------------------

Ladies and Gentlemen:

           In connection with our acquisition of the above-referenced
Certificates we certify that (a) we understand that the Certificates are not
being registered under the Securities Act of 1933, as amended (the "Act"), or
any state securities laws and are being transferred to us in a transaction that
is exempt from the registration requirements of the Act and any such laws, (b)
we have such knowledge and experience in financial and business matters that we
are capable of evaluating the merits and risks of investments in the
Certificates, (c) we have had the opportunity to ask questions of and receive
answers from the Depositor concerning the purchase of the Certificates and all
matters relating thereto or any additional information deemed necessary to our
decision to purchase the Certificates, (d) either (i) we are not an employee
benefit plan that is subject to the Employee Retirement Income Security Act of
1974, as amended, or a plan or arrangement that is subject to Section 4975 of
the Internal Revenue Code of 1986, as amended, nor are we acting on behalf of
any such plan or arrangement or using the assets of any such plan or arrangement
to effect such acquisition, or (ii) [if the Certificate has been the subject of
an ERISA-Qualifying Underwriting,] we are purchasing the Certificates with funds
contained in an "insurance company general account" (as defined in Section V(e)
of Prohibited Transaction Class Exemption 95-60 ("PTCE 95-60")) and our purchase
and holding of the Certificates satisfy the requirements for exemptive relief
under Sections I and III of PTCE 95-60, (e) we have not, nor has anyone acting
on our behalf offered, transferred, pledged, sold or otherwise disposed of the
Certificates, any interest in the Certificates or any other similar security to,
or solicited any offer to buy or accept a transfer, pledge or other disposition
of the Certificates, any interest in the Certificates or any other similar
security from, or otherwise approached or negotiated with respect to the
Certificates, any interest in the Certificates or any other similar security
with, any person in any manner, or made any general solicitation by means of
general advertising or in any other manner, or taken any other action, that
would constitute a distribution of the Certificates under the Act or that would
render the disposition of the Certificates a violation of Section 5 of the Act
or require registration pursuant thereto, nor will act, nor has authorized or
will authorize any person to act, in such manner with respect to the
Certificates, (f) we are a "qualified institutional buyer" as that term is
defined in Rule 144A under the Act ("Rule 144A") and have completed either of
the forms of certification to that effect attached hereto as Annex 1 or Annex 2,
(g) we

                                      L-1
<PAGE>

are aware that the sale to us is being made in reliance on Rule 144A, and (h) we
are acquiring the Certificates for our own account or for resale pursuant to
Rule 144A and further, understand that such Certificates may be resold, pledged
or transferred only (A) to a person reasonably believed to be a qualified
institutional buyer that purchases for its own account or for the account of a
qualified institutional buyer to whom notice is given that the resale, pledge or
transfer is being made in reliance on Rule 144A, or (B) pursuant to another
exemption from registration under the Act.

                                                Very truly yours,

                                                ______________________________
                                                Print Name of Transferee

                                                By: __________________________
                                                        Authorized Officer

                                      L-2
<PAGE>

                              ANNEX 1 TO EXHIBIT L

            QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A
            --------------------------------------------------------

          [For Transferees Other Than Registered Investment Companies]

        The undersigned (the "Buyer") hereby certifies as follows to the parties
listed in the Rule 144A Transferee Certificate to which this certification
relates with respect to the Certificates described therein:

        1. As indicated below, the undersigned is the President, Chief Financial
Officer, Senior Vice President or other executive officer of the Buyer.

        2. In connection with purchases by the Buyer, the Buyer is a "qualified
institutional buyer" as that term is defined in Rule 144A under the Securities
Act of 1933, as amended ("Rule 144A") because (i) the Buyer owned and/or
invested on a discretionary basis $           (1) in securities (except for the
excluded securities referred to below) as of the end of the Buyer's most recent
fiscal year (such amount being calculated in accordance with Rule 144A and (ii)
the Buyer satisfies the criteria in the category marked below.

               ___ Corporation, etc. The Buyer is a corporation (other than a
          bank, savings and loan association or similar institution),
          Massachusetts or similar business trust, partnership, or charitable
          organization described in Section 501(c)(3) of the Internal Revenue
          Code of 1986, as amended.

               ___ Bank. The Buyer (a) is a national bank or banking institution
          organized under the laws of any State, territory or the District of
          Columbia, the business of which is substantially confined to banking
          and is supervised by the State or territorial banking commission or
          similar official or is a foreign bank or equivalent institution, and
          (b) has an audited net worth of at least $25,000,000 as demonstrated
          in its latest annual financial statements, a copy of which is attached
          hereto.

               ___ Savings and Loan. The Buyer (a) is a savings and loan
          association, building and loan association, cooperative bank,
          homestead association or similar institution, which is supervised and
          examined by a State or Federal authority having supervision over any
          such institutions or is a foreign savings and loan association or
          equivalent institution and (b) has an audited net worth of at least
          $25,000,000 as demonstrated in its latest annual financial statements,
          a copy of which is attached hereto.

               ___ Broker-dealer. The Buyer is a dealer registered pursuant to
          Section 15 of the Securities Exchange Act of 1934.

               ___ Insurance Company. The Buyer is an insurance company whose
          primary and predominant business activity is the writing of insurance
          or the reinsuring of risks underwritten by insurance companies and
          which is subject to supervision by the

______________
(1)  Buyer must own and/or invest on a discretionary basis at least $100,000,000
     in securities unless Buyer is a dealer, and, in that case, Buyer must own
     and/or invest on a discretionary basis at least $10,000,000 in securities.

                                      L-3
<PAGE>

          insurance  commissioner  or a similar  official  or agency of a State,
          territory or the District of Columbia.

               ___ State or Local Plan. The Buyer is a plan established and
          maintained by a State, its political subdivisions, or any agency or
          instrumentality of the State or its political subdivisions, for the
          benefit of its employees.

               ___ ERISA Plan. The Buyer is an employee benefit plan within the
          meaning of Title I of the Employee Retirement Income Security Act of
          1974.

               ___ Investment Advisor. The Buyer is an investment advisor
          registered under the Investment Advisors Act of 1940.

               ___ Small Business Investment Company. Buyer is a small business
          investment company licensed by the U.S. Small Business Administration
          under Section 301(c) or (d) of the Small Business Investment Act of
          1958.

               ___ Business Development Company. Buyer is a business development
          company as defined in Section 202(a)(22) of the Investment Advisors
          Act of 1940.

        3. The term "securities" as used herein does not include (i) securities
of issuers that are affiliated with the Buyer, (ii) securities that are part of
an unsold allotment to or subscription by the Buyer, if the Buyer is a dealer,
(iii) securities issued or guaranteed by the U.S. or any instrumentality
thereof, (iv) bank deposit notes and certificates of deposit, (v) loan
participations, (vi) repurchase agreements, (vii) securities owned but subject
to a repurchase agreement and (viii) currency, interest rate and commodity
swaps.

        4. For purposes of determining the aggregate amount of securities owned
and/or invested on a discretionary basis by the Buyer, the Buyer used the cost
of such securities to the Buyer and did not include any of the securities
referred to in the preceding paragraph, except (i) where the Buyer reports its
securities holdings in its financial statements on the basis of their market
value, and (ii) no current information with respect to the cost of those
securities has been published. If clause (ii) in the preceding sentence applies,
the securities may be valued at market. Further, in determining such aggregate
amount, the Buyer may have included securities owned by subsidiaries of the
Buyer, but only if such subsidiaries are consolidated with the Buyer in its
financial statements prepared in accordance with generally accepted accounting
principles and if the investments of such subsidiaries are managed under the
Buyer's direction. However, such securities were not included if the Buyer is a
majority-owned, consolidated subsidiary of another enterprise and the Buyer is
not itself a reporting company under the Securities Exchange Act of 1934, as
amended.

        5. The Buyer acknowledges that it is familiar with Rule 144A and
understands that the seller to it and other parties to the Certificates are
relying and will continue to rely on the statements made herein because one or
more sales to the Buyer may be in reliance on Rule 144A.

        6. Until the date of purchase of the Rule 144A Securities, the Buyer
will notify each of the parties to which this certification is made of any
changes in the information and conclusions herein. Until such notice is given,
the Buyer's purchase of the Certificates will constitute a reaffirmation of this
certification as of the date of such purchase. In addition, if the Buyer is a
bank or savings and loan is provided above, the Buyer agrees that it will
furnish to such parties updated annual financial statements promptly after they
become available.

                                      L-4
<PAGE>

                                         _______________________________________
                                         Print Name of Buyer

                                         By:____________________________________
                                               Name:
                                               Title:

                                         _______________________________________
                                         Date:

                                      L-5
<PAGE>

                              ANNEX 2 TO EXHIBIT L

            QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A
            --------------------------------------------------------

           [For Transferees That are Registered Investment Companies]

        The undersigned (the "Buyer") hereby certifies as follows to the parties
listed in the Rule 144A Transferee Certificate to which this certification
relates with respect to the Certificates described therein:

        1. As indicated below, the undersigned is the President, Chief Financial
Officer or Senior Vice President of the Buyer or, if the Buyer is a "qualified
institutional buyer" as that term is defined in Rule 144A under the Securities
Act of 1933, as amended ("Rule 144A") because Buyer is part of a Family of
Investment Companies (as defined below), is such an officer of the Adviser.

        2. In connection with purchases by Buyer, the Buyer is a "qualified
institutional buyer" as defined in SEC Rule 144A because (i) the Buyer is an
investment company registered under the Investment Company Act of 1940, as
amended and (ii) as marked below, the Buyer alone, or the Buyer's Family of
Investment Companies, owned at least $100,000,000 in securities (other than the
excluded securities referred to below) as of the end of the Buyer's most recent
fiscal year. For purposes of determining the amount of securities owned by the
Buyer or the Buyer's Family of Investment Companies, the cost of such securities
was used, except (i) where the Buyer or the Buyer's Family of Investment
Companies reports its securities holdings in its financial statements on the
basis of their market value, and (ii) no current information with respect to the
cost of those securities has been published. If clause (ii) in the preceding
sentence applies, the securities may be valued at market.

               ___ The Buyer owned $      in securities (other than the excluded
          securities referred to below) as of the end of the Buyer's most recent
          fiscal year (such amount being calculated in accordance with Rule
          144A).

               ___ The Buyer is part of a Family of Investment Companies which
          owned in the aggregate $      in securities (other than the excluded
          securities referred to below) as of the end of the Buyer's most recent
          fiscal year (such amount being calculated in accordance with Rule
          144A).

        3. The term "Family of Investment Companies" as used herein means two or
more registered investment companies (or series thereof) that have the same
investment adviser or investment advisers that are affiliated (by virtue of
being majority owned subsidiaries of the same parent or because one investment
adviser is a majority owned subsidiary of the other).

        4. The term "securities" as used herein does not include (i) securities
of issuers that are affiliated with the Buyer or are part of the Buyer's Family
of Investment Companies, (ii) securities issued or guaranteed by the U.S. or any
instrumentality thereof, (iii) bank deposit notes and certificates of deposit,
(iv) loan participations, (v) repurchase agreements, (vi) securities owned but
subject to a repurchase agreement and (vii) currency, interest rate and
commodity swaps.

        5. The Buyer is familiar with Rule 144A and understands that the parties
listed in the Rule 144A Transferee Certificate to which this certification
relates are relying and will continue to rely on the statements made herein
because one or more sales to the Buyer will be in reliance on Rule 144A. In
addition, the Buyer will only purchase for the Buyer's own account.

                                      L-6
<PAGE>

        6. Until the date of purchase of the Certificates, the undersigned will
notify the parties listed in the Rule 144A Transferee Certificate to which this
certification relates of any changes in the information and conclusions herein.
Until such notice is given, the Buyer's purchase of the Certificates will
constitute a reaffirmation of this certification by the undersigned as of the
date of such purchase.

                                        ________________________________________
                                        Print Name of Buyer

                                        By:____________________________________
                                             Name:
                                             Title:

                                        ________________________________________
                                        Date:

                                      L-7
<PAGE>

                                    EXHIBIT M

                               REQUEST FOR RELEASE
                                  (for Trustee)

                                IndyMac MBS, Inc.
                    IndyMac IMJA Mortgage Loan Trust 2007-A1
                       Mortgage Pass-Through Certificates
                                 Series 2007-A1

Loan Information
----------------

     Name of Mortgagor:

     Servicer
     Loan No.:                  _________________________

Trustee

     Name:                      _________________________

     Address:                   _________________________

                                _________________________

Trustee
Mortgage File No.:

     The undersigned Servicer hereby acknowledges that it has received from
Deutsche Bank National Trust Company, as Trustee for the Holders of Mortgage
Pass-Through Certificates, of the above-referenced Series, the documents
referred to below (the "Documents"). All capitalized terms not otherwise defined
in this Request for Release shall have the meanings given them in the Pooling
and Servicing Agreement (the "Pooling and Servicing Agreement") relating to the
above-referenced Series among the Trustee, IndyMac Bank, F.S.B., as Seller and
Servicer and IndyMac MBS, Inc., as Depositor.

( )  Mortgage Note dated _________, 20__, in the original principal sum of
     $_______________, made by _____________________. payable to, or endorsed to
     the order of, the Trustee.

( )  Mortgage recorded on _____________ as instrument no. ________ in the County
     Recorder's Office of the County of _____________, State of ____________ in
     book/reel/docket _________ of official records at page/image ___________.

( )  Deed of Trust recorded on _________ as instrument no. _______ in the County
     Recorder's Office of the County of _____________, State of ____________ in
     book/reel/docket _________ of official records at page/image ___________.

( )  Assignment of Mortgage or Deed of Trust to the Trustee, recorded on _______
     as instrument no. ______ in the County Recorder's Office of the County of
     ___________, State of _____________ in book/reel/docket __________ of
     official records at page/image ________.

                                      M-1
<PAGE>

( )  Other documents, including any amendments, assignments or other
     assumptions of the Mortgage Note or Mortgage.

     The undersigned Servicer hereby acknowledges and agrees as follows:

               (1) The Servicer shall hold and retain possession of the
          Documents in trust for the benefit of the Trustee, solely for the
          purposes provided in the Agreement.

               (2) The Servicer shall not cause or knowingly permit the
          Documents to become subject to, or encumbered by, any claim, liens,
          security interest, charges, writs of attachment or other impositions
          nor shall the Servicer assert or seek to assert any claims or rights
          of setoff to or against the Documents or any proceeds thereof.

               (3) The Servicer shall return each and every Document previously
          requested from the Mortgage File to the Trustee when the need therefor
          no longer exists, unless the Mortgage Loan relating to the Documents
          has been liquidated and the proceeds thereof have been remitted to the
          Certificate Account and except as expressly provided in the Agreement.

               (4) The Documents and any proceeds thereof, including any
          proceeds of proceeds, coming into the possession or control of the
          Servicer shall at all times be earmarked for the account of the
          Trustee, and the Servicer shall keep the Documents and any proceeds
          separate and distinct from all other property in the Servicer's
          possession, custody or control.

                                        INDYMAC BANK, F.S.B.

                                        By: _________________
                                              Name:
                                              Title:

Date:            , 20

                                      M-2
<PAGE>

                                    EXHIBIT N

                        REQUEST FOR RELEASE OF DOCUMENTS

To:    Deutsche Bank National Trust Company

Attn:  Mortgage Custody Services

Re:    The Pooling and Servicing Agreement dated June 1, 2007 among IndyMac
       Bank, F.S.B. as Servicer, Inc, IndyMac MBS, Inc. and Deutsche
       Bank National Trust Company, as Trustee
       --------------------------------------------------------------------

Ladies and Gentlemen:

     In connection with the administration of the Mortgage Loans held by you as
Trustee for IndyMac MBS, Inc., we request the release of the Mortgage Loan File
for the Mortgage Loan(s) described below, for the reason indicated.

     FT Account #:                 Pool #:

Mortgagor's Name, Address and Zip Code:
--------------------------------------

Mortgage Loan Number:
--------------------

Reason for Requesting Documents (check one)
-------------------------------

_______1. Mortgage Loan paid in full (IndyMac hereby certifies that all
          amounts have been received.)

_______2. Mortgage Loan Liquidated (IndyMac hereby certifies that all
          proceeds of foreclosure, insurance, or other liquidation have been
          finally received.)

_______3. Mortgage Loan in Foreclosure.

_______4. Other (explain): ____________________________________

     If item 1 or 2 above is checked, and if all or part of the Mortgage File
was previously released to us, please release to us our previous receipt on file
with you, as well as an additional documents in your possession relating to the
above-specified Mortgage Loan. If item 3 or 4 is checked, upon return of all of
the above documents to you as Trustee, please acknowledge your receipt by
signing in the space indicated below, and returning this form.

                                      N-1
<PAGE>

INDYMAC BANK, F.S.B.
888 East Walnut Street
Pasadena, CA  91101-7211

By:________________________
Name:______________________
Title:_____________________
Date:______________________

TRUSTEE CONSENT TO RELEASE AND
ACKNOWLEDGEMENT OF RECEIPT

By:________________________
Name:______________________
Title:_____________________
Date:______________________

                                      N-2
<PAGE>

                                   EXHIBIT O-1
                                   -----------

      FORM OF CERTIFICATION TO BE PROVIDED BY THE DEPOSITOR WITH FORM 10-K

              Re:  IndyMac MBS, Inc.
                   IndyMac IMJA Mortgage Loan Trust 200_-  , Series 200_- __
                   ---------------------------------------------------------

          I, [identify the certifying individual], certify that:

          1. I have reviewed this report on Form 10-K and all reports on Form
10-D required to be filed in respect of the period covered by this report on
Form 10-K of IndyMac IMJA Mortgage Loan Trust 200 - , Series 200 - (the
"Exchange Act periodic reports");

          2. Based on my knowledge, the Exchange Act periodic reports, taken as
a whole, does not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements made, in light of the
circumstances under which such statements were made, not misleading with respect
to the period covered by this report;

          3. Based on my knowledge, the distribution, servicing and other
information required to be provided under Form 10-D for the period covered by
this report is included in the Exchange Act periodic reports;

          4. Based on my knowledge and the servicer compliance statement
required in this report under Item 1123 of Regulation AB and except as disclosed
in the Exchange Act periodic reports, the servicer has fulfilled its obligations
under the servicing agreement in all material respects; and

          5. All of the reports on assessment of compliance with servicing
criteria for asset-backed securities and their related attestation reports on
assessment of compliance with servicing criteria for asset-backed securities
required to be included in this report in accordance with Item 1122 of
Regulation AB and Exchange Act Rules 13a-18 and 15d-18 have been included as an
exhibit to this report, except as otherwise disclosed in this report. Any
material instances of noncompliance described in such reports have been
disclosed in this report on Form 10-K.

          In giving the certifications above, I have reasonably relied on
information provided to me by the following unaffiliated parties: Deutsche Bank
National Trust Company.

Date: __________________

                                        _______________________________________
                                        [Signature]
                                        [Title]

                                      O-1-1
<PAGE>

                                   EXHIBIT O-2
                                   -----------

                     FORM OF TRUSTEE'S OFFICER'S CERTIFICATE

          I, ____________________, a duly elected and acting officer of Deutsche
Bank National Trust Company (the "Trustee") hereby certify as follows:

          Reference is hereby made to the Pooling and Servicing Agreement dated
as of June 1, 2007 (the "Pooling Agreement") by and among IndyMac Bank, F.S.B.,
as seller and servicer, IndyMac MBS, Inc., as depositor and Deutsche Bank
National Trust Company, as trustee, pursuant to which was created the IndyMac
IMJA Mortgage Loan Trust 200 - , Series 200 - (the "Trust"). Capitalized terms
used herein but not defined shall have the meanings assigned to them in the
Pooling Agreement.

          1. I am an authorized officer of the Trustee and I have reviewed this
annual report on Form 10-K and all reports on Form 10-D required to be filed in
respect of the period covered by this report on Form 10-K of IndyMac IMJA
Mortgage Loan Trust 200 - , Series 200 - (the "Exchange Act Periodic Reports");

          2. For purposes of this certificate, "Relevant Information" means the
information in the report on assessment of the Trustee's compliance with the
servicing criteria set forth in Item 1122(d) of Reg AB (the "Servicing
Assessment"), the registered public accounting firm's attestation provided in
accordance with Rules 13a-18 and 15d-18 under the Exchange Act and Section
1122(b) of Reg AB ( the "Attestation Report") applicable to the Trustee and the
Monthly Statements (excluding information provided, or based on information
provided, by the Servicer or any servicer) and those items in Exhibit S attached
to the Pooling and Servicing Agreement which indicate the 4.06 statement or the
Trustee as the responsible party during the Relevant Year. Based on my
knowledge, the Relevant Information, taken as a whole, does not contain any
untrue statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this
annual report; and

          3. Based on my knowledge, the distribution information required to be
provided by the Trustee under the Pooling and Servicing Agreement is included in
the Monthly Statements.

          4. I am responsible for reviewing the activities performed by the
Trustee, as servicer under the Pooling Agreement during the Relevant Year. Based
upon the review required by the Pooling Agreement and except as disclosed in the
Servicing Assessment or Attestation Report, to the best of my knowledge, the
Trustee has fulfilled its obligations under the Pooling Agreement throughout the
Relevant Year. Relevant Year shall mean 200__.

DATED as of _____________, 200____.

                                        By:      _____________________________
                                        Name:
                                        Title:

                                      O-2-1

<PAGE>

                                    EXHIBIT P
                                    ---------

                                   [Reserved]

                                       P-1

<PAGE>

                                    EXHIBIT Q

                        FORM 10-D, FORM 8-K AND FORM 10-K
                            REPORTING RESPONSIBILITY

As to each item described below, the entity indicated as the Responsible Party
shall be primarily responsible for reporting the information to the Trustee
pursuant to Section 11.04. If the Trustee is indicated below as to any item,
then the Trustee is primarily responsible for obtaining that information.

Under Item 1 of Form 10-D: a) items marked "4.06 statement" are required to be
included in the periodic Distribution Date statement under Section 4.06,
provided by the Trustee based on information received from the Servicer; and b)
items marked "Form 10-D report" are required to be in the Form 10-D report but
not the 4.06 statement, provided by the party indicated. Information under all
other Items of Form 10-D is to be included in the Form 10-D report.

<TABLE>
<CAPTION>
    Form            Item                              Description                             Responsible Party
    ----            ----                              -----------                             -----------------
---------------------------------------------------------------------------------------------------------------------
<S>            <C>             <C>                                                        <C>
10-D           Must be filed within 15 days of the distribution date for the mortgage-backed securities.
               =========================================================================================
               ------------------------------------------------------------------------------------------------------
               1               Distribution and Pool Performance Information
                               ---------------------------------------------------------- ---------------------------
                               Item 1121(a) - Distribution and Pool Performance
                               Information
                               ---------------------------------------------------------- ---------------------------
                               (1) Any applicable record dates, accrual dates,            4.06 statement
                               determination dates for calculating distributions and
                               actual distribution dates for the distribution period.
                               ---------------------------------------------------------- ---------------------------
                               (2) Cash flows received and the sources thereof for        4.06 statement
                               distributions, fees and expenses.
                               ---------------------------------------------------------- ---------------------------
                               (3) Calculated amounts and distribution of the flow of     4.06 statement
                               funds for the period itemized by type and priority of
                               payment, including:
                               ---------------------------------------------------------- ---------------------------
                                        (i) Fees or expenses accrued and paid, with an    4.06 statement
                               identification of the general purpose of such fees and
                               the party receiving such fees or expenses.
                               ---------------------------------------------------------- ---------------------------
                                        (ii) Payments accrued or paid with respect to     4.06 statement
                               enhancement or other support identified in Item 1114 of
                               Regulation AB (such as insurance premiums or other
                               enhancement maintenance fees), with an identification
                               of the general purpose of such payments and the party
                               receiving such payments.
                               ---------------------------------------------------------- ---------------------------
                                        (iii) Principal, interest and other               4.06 statement
                               distributions accrued and paid on the
                               mortgage-backed securities by type and by class
                               or series and any principal or interest
                               shortfalls or carryovers.
                               ---------------------------------------------------------- ---------------------------
                                        (iv) The amount of excess cash flow or excess     4.06 statement
                               spread and the disposition of excess cash flow.
                               ---------------------------------------------------------- ---------------------------
                               (4) Beginning and ending principal balances of the         4.06 statement
                               mortgage-backed securities.
                               ---------------------------------------------------------- ---------------------------
                               (5) Interest rates applicable to the pool assets and the   4.06 statement
                               mortgage-backed securities, as applicable.
                               ---------------------------------------------------------- ---------------------------
                               (6) Beginning and ending balances of transaction           4.06 statement
                               accounts, such as reserve accounts, and material
---------------------------------------------------------------------------------------------------------------------

                                      Q-1
<PAGE>

---------------------------------------------------------------------------------------------------------------------
                               account activity during the period.
                               ---------------------------------------------------------- ---------------------------
                               (7) Any amounts drawn on any credit enhancement or other   4.06 statement
                               support identified in Item 1114 of Regulation AB, as
                               applicable, and the amount of coverage remaining under
                               any such enhancement, if known and applicable.
                               ---------------------------------------------------------- ---------------------------
                               (8) Number and amount of pool assets at the beginning      4.06 statement
                               and ending of each period, and updated pool composition
                               information, such as weighted average coupon, weighted     Updated pool composition
                               average life, weighted average remaining term, pool        information fields to be
                               factors and prepayment amounts.                            as specified by Depositor
                                                                                          from time to time
                               ---------------------------------------------------------- ---------------------------
                               (9) Delinquency and loss information for the period.       4.06 statement.

                               In addition, describe any material changes to the
                               information specified in Item 1100(b)(5) of Regulation     Form 10-D report:
                               AB regarding the pool assets.                              Servicer
                               ---------------------------------------------------------- ---------------------------
                               (10) Information on the amount, terms and general          4.06 statement
                               purpose of any advances made or reimbursed during
                               the period, including the general use of funds advanced
                               and the general source of funds for reimbursements.
                               ---------------------------------------------------------- ---------------------------
                               (11) Any material modifications, extensions or waivers     Form 10-D report:
                               to pool asset terms, fees, penalties or payments during    Servicer
                               the distribution period or that have cumulatively
                               become material over time.
                               ---------------------------------------------------------- ---------------------------
                               (12) Material breaches of pool asset representations or    Form 10-D report: Trustee
                               warranties or transaction covenants.                       (based on actual knowledge
                                                                                          to the extent not notified
                                                                                          by the Servicer or the
                                                                                          Depositor)and Depositor
                                                                                          (to the extent of actual
                                                                                          knowledge)
                               ---------------------------------------------------------- ---------------------------
                               (13) Information on ratio, coverage or other tests used    4.06 statement
                               for determining any early amortization, liquidation or
                               other performance trigger and whether the trigger was
                               met.
                               ---------------------------------------------------------- ---------------------------
                               (14) Information regarding any new issuance of             Form 10-D report:
                               mortgage-backed securities backed by the same asset        Depositor
                               pool,

                               [information regarding] any pool asset changes (other      Form 10-D report: Servicer
                               than in connection with a pool asset converting into
                               cash in accordance with its terms), such as additions or
                               removals in connection with a pre-funding or revolving
                               period and pool asset
---------------------------------------------------------------------------------------------------------------------

                                      Q-2
<PAGE>

---------------------------------------------------------------------------------------------------------------------
                               substitutions and repurchases (and purchase rates,
                               if applicable), and cash flows available
                               for future purchases, such as the balances of any
                               pre-funding or revolving accounts, if applicable.

                               Disclose any material changes in the solicitation,
                               credit-granting, underwriting, origination, acquisition    Form 10-D report: Servicer
                               or pool selection criteria or procedures, as applicable,
                               used to originate, acquire or select the new pool
                               assets.
                               ---------------------------------------------------------- ---------------------------
                               Item 1121(b) - Pre-Funding or Revolving Period             N/A
                               Information

                               Updated pool information as required under Item
                               1121(b).
               --------------- ---------------------------------------------------------- ---------------------------
               2               Legal Proceedings
                               ---------------------------------------------------------- ---------------------------
                               Item 1117 - Legal proceedings pending against the
                               following entities, or their respective property,
                               that is material to Certificateholders, including
                               proceedings known to be contemplated by
                               governmental authorities:

                               Sponsor (Seller)                                           Seller

                               Depositor                                                  Depositor

                               Trustee                                                    Trustee

                               Issuing entity                                             Depositor

                               Servicer, affiliated Servicer, other Servicer              Servicer
                               servicing 20% or more of pool assets at time of
                               report, other material servicers

                               Originator of 20% or more of pool assets as of the         Seller
                               Cut-off Date

                               Custodian                                                  Trustee
               --------------- ---------------------------------------------------------- ---------------------------
               3               Sales of Securities and Use of Proceeds
                               ---------------------------------------------------------- ---------------------------
                               Information from Item 2(a) of Part II of Form 10-Q:

                               With respect to any sale of securities by the
                               sponsor, depositor or issuing entity, that are             Depositor
                               backed by the same asset pool or are otherwise issued
                               by the issuing entity, whether or not registered,
                               provide the sales and use of proceeds information in
                               Item 701 of Regulation S-K. Pricing information can
                               be omitted if securities were not registered.
               --------------- ---------------------------------------------------------- ---------------------------
               4               Defaults Upon Senior Securities
                               ---------------------------------------------------------- ---------------------------
                               Information from Item 3 of Part II of Form 10-Q:
---------------------------------------------------------------------------------------------------------------------

                                      Q-3
<PAGE>

---------------------------------------------------------------------------------------------------------------------

                               Report the occurrence of any Event of Default (after
                               expiration of any grace period and provision of any        Trustee
                               required notice)
               --------------- ---------------------------------------------------------- ---------------------------
               5               Submission of Matters to a Vote of Security Holders
                               ---------------------------------------------------------- ---------------------------
                               Information from Item 4 of Part II of Form 10-Q            Party submitting the
                                                                                          matter to Holders for
                                                                                          vote
               --------------- ---------------------------------------------------------- ---------------------------
               6               Significant Obligors of Pool Assets
                               ---------------------------------------------------------- ---------------------------
                               Item 1112(b) - Significant Obligor Financial Information*  N/A
                               ---------------------------------------------------------- ---------------------------
                               *This information need only be reported on the
                               Form 10-D for the distribution period in which
                               updated information is required pursuant to the
                               Item.
               --------------- ---------------------------------------------------------- ---------------------------
               7               Significant Enhancement Provider Information
                               ---------------------------------------------------------- ---------------------------
                               Item 1114(b)(2) - Credit Enhancement Provider Financial    Depositor
                               Information*

                               Determining applicable disclosure threshold

                               Obtaining required financial information or effecting
                               incorporation by reference
                               ---------------------------------------------------------- ---------------------------
                               Item 1115(b) - Derivative Counterparty Financial           Depositor
                               Information*

                               Determining current maximum probable exposure

                               Determining current significance percentage

                               Obtaining required financial information or effecting
                               incorporation by reference
                               ---------------------------------------------------------- ---------------------------
                               *This information need only be reported on the
                               Form 10-D for the distribution period in which
                               updated information is required pursuant to the
                               Items.
               --------------- ---------------------------------------------------------- ---------------------------
               8               Other Information
                               ---------------------------------------------------------- ---------------------------
                               Disclose any information required to be reported           The Responsible Party for
                               on Form 8-K during the period covered by the Form 10-D     the applicable Form 8-K
                               but not reported                                           item as indicated below
               --------------- ---------------------------------------------------------- ---------------------------
               9               Exhibits
                               ---------------------------------------------------------- ---------------------------
                               Distribution report                                        Trustee
                               ---------------------------------------------------------- ---------------------------
                               Exhibits required by Item 601 of Regulation S-K, such as   Depositor
                               material agreements
-------------- ------------------------------------------------------------------------------------------------------
8-K            Must be filed within four business days of an event reportable on Form 8-K.
               ===========================================================================
               ------------------------------------------------------------------------------------------------------
               1.01            Entry into a Material Definitive Agreement
---------------------------------------------------------------------------------------------------------------------

                                      Q-4
<PAGE>

---------------------------------------------------------------------------------------------------------------------
                               Disclosure is required regarding entry into or amendment   Servicer; or any of the
                               of any definitive agreement that is material to the        following that is a party
                               securitization, even if depositor is not a party.          to the agreement if
                                                                                          Servicer is not: Trustee,
                               Examples: servicing agreement, custodial agreement.        Sponsor, Depositor

                               Note: disclosure not required as to definitive
                               agreements that are fully disclosed in the prospectus
               --------------- ---------------------------------------------------------- ---------------------------
               1.02            Termination of a Material Definitive Agreement
                               ---------------------------------------------------------- ---------------------------
                               Disclosure is required regarding termination of  any       Servicer; or any of the
                               definitive agreement that is material to the               following that is a party
                               securitization (other than expiration in accordance with   to the agreement if
                               its terms), even if depositor is not a party.              Servicer is not: Trustee,
                                                                                          Sponsor, Depositor
                               Examples: servicing agreement, custodial agreement.

               --------------- ---------------------------------------------------------- ---------------------------
               1.03            Bankruptcy or Receivership
                               ---------------------------------------------------------- ---------------------------
                               Disclosure is required regarding the bankruptcy             Depositor
                               or receivership, if known to the Depositor,
                               with respect to any of the following:

                               Sponsor (Seller), Depositor, Servicer, affiliated
                               Servicer, other Servicer servicing 20% or more of pool
                               assets at time of report, other material servicers,
                               Trustee, significant obligor, credit enhancer (10% or
                               more), derivatives counterparty
               --------------- ---------------------------------------------------------- ---------------------------
               2.04            Triggering Events that Accelerate or Increase a Direct
                               Financial Obligation or an Obligation under an
                               Off-Balance Sheet Arrangement
                               ---------------------------------------------------------- ---------------------------
                               Includes an early amortization, performance trigger or     Servicer/Trustee (to the
                               other event, including event of default, that would        extent of actual
                               materially alter the payment priority/distribution of      knowledge)
                               cash flows/amortization schedule.

                               Disclosure will be made of events other than waterfall
                               triggers which are disclosed in the 4.06 statement
               --------------- ---------------------------------------------------------- ---------------------------
               3.03            Material Modification to Rights of Security Holders
                               ---------------------------------------------------------- ---------------------------
                               Disclosure is required of any material modification to     Trustee
                               documents defining the rights of Certificateholders,
                               including the Pooling and Servicing Agreement
               --------------- ---------------------------------------------------------- ---------------------------
               5.03            Amendments to Articles of Incorporation or Bylaws;
                               Change in Fiscal Year
                               ---------------------------------------------------------- ---------------------------
                               Disclosure is required of any amendment "to the            Depositor
                               governing documents of the issuing entity"
---------------------------------------------------------------------------------------------------------------------

                                      Q-5
<PAGE>

---------------------------------------------------------------------------------------------------------------------
               5.06            Change in Shell Company Status
                               ---------------------------------------------------------- ---------------------------
                               [Not applicable to ABS issuers]                            Depositor
               --------------- ---------------------------------------------------------- ---------------------------
               6.01            ABS Informational and Computational Material
                               ---------------------------------------------------------- ---------------------------
                               [Not included in reports to be filed under Section 11.03]  Depositor
               --------------- ---------------------------------------------------------- ---------------------------
               6.02            Change of Servicer or Trustee
                               ---------------------------------------------------------- ---------------------------
                               Requires disclosure of any removal, replacement,           Trustee or Servicer
                               substitution or addition of any servicer, affiliated
                               servicer, other servicer servicing 10% or more of pool
                               assets at time of report, other material servicers,
                               certificate administrator or trustee. Reg AB disclosure
                               about any new servicer or trustee is also required.
               --------------- ---------------------------------------------------------- ---------------------------
               6.03            Change in Credit Enhancement or Other External Support
                               ---------------------------------------------------------- ---------------------------
                               Covers termination of any enhancement in manner other      Depositor or Trustee
                               than by its terms, the addition of an enhancement,
                               or a material change in the enhancement provided.
                               Applies to external credit enhancements as well as
                               derivatives. Reg AB disclosure about any new enhancement
                               provider is also required.
               --------------- ---------------------------------------------------------- ---------------------------
               6.04            Failure to Make a Required Distribution                    Trustee
               --------------- ---------------------------------------------------------- ---------------------------
               6.05            Securities Act Updating Disclosure
               --------------- ---------------------------------------------------------- ---------------------------
                               If any material pool characteristic differs by 5% or       Depositor
                               more at the time of issuance of the securities from
                               the description in the final prospectus, provide
                               updated Reg AB disclosure about the actual asset pool.
                               ---------------------------------------------------------- ---------------------------
                               If there are any new servicers or originators required     Depositor
                               to be disclosed under Regulation AB as a result of the
                               foregoing, provide the information called for in
                               Items 1108 and 1110 respectively.
               --------------- ---------------------------------------------------------- ---------------------------
               7.01            Regulation FD Disclosure                                   Depositor
               --------------- ---------------------------------------------------------- ---------------------------
               8.01            Other Events
               --------------- ---------------------------------------------------------- ---------------------------
                               Any event, with respect to which information is not        Depositor
                               otherwise called for in Form 8-K, that the registrant
                               deems of importance to security holders.
               --------------- ---------------------------------------------------------- ---------------------------
               9.01            Financial Statements and Exhibits                          The Responsible Party
                                                                                          applicable to reportable
                                                                                          event
-------------- ------------------------------------------------------------------------------------------------------
10-K           Must be filed within 90 days of the fiscal year end for the registrant.
               =======================================================================
               ------------------------------------------------------------------------------------------------------
               9B              Other Information
                               ---------------------------------------------------------- ---------------------------
                               Disclose any information required to be reported on Form   The Responsible Party for
                               8-K during the fourth quarter covered by the Form 10-K     the applicable Form 8-K
                               but not reported                                           item as indicated above
               --------------- ---------------------------------------------------------- ---------------------------
               15              Exhibits and Financial Statement Schedules
                               ---------------------------------------------------------- ---------------------------
                               Item 1112(b) - Significant Obligor Financial Information   Servicer
---------------------------------------------------------------------------------------------------------------------

                                      Q-6
<PAGE>

---------------------------------------------------------------------------------------------------------------------
                               Item 1114(b)(2) - Credit Enhancement Provider              Depositor
                               Financial Information

                               Determining applicable disclosure threshold

                               Obtaining required financial information or effecting
                               incorporation by reference
                               ---------------------------------------------------------- ---------------------------
                               Item 1115(b) - Derivative Counterparty Financial           Depositor
                               Information

                               Determining current maximum probable exposure

                               Determining current significance percentage

                               Obtaining required financial information or effecting
                               incorporation by reference
                               ---------------------------------------------------------- ---------------------------
                               Item 1117 - Legal proceedings pending against the
                               following entities, or their respective property,
                               that is material to Certificateholders, including
                               proceedings known to be contemplated by
                               governmental authorities:

                               Sponsor (Seller)                                           Seller

                               Depositor                                                  Depositor

                               Trustee                                                    Trustee

                               Issuing entity                                             Depositor

                               Servicer, affiliated Servicer, other Servicer              Servicer
                               servicing 20% or more of pool assets at time of
                               report, other material servicers

                               Originator of 20% or more of pool assets as of the         Servicer
                               Cut-off Date
                               ---------------------------------------------------------- ---------------------------
                               Item 1119 - Affiliations and relationships
                               between the following entities, or their
                               respective affiliates, that are material to
                               Certificateholders:

                               Sponsor (Seller)
                                                                                          Seller
                               Depositor
                                                                                          Depositor
                               Trustee
                                                                                          Trustee (only as to
                               Servicer, affiliated Servicer, other Servicer servicing    affiliations between the
                               20% or more of pool assets at time of report, other        Trustee and such other
                               material servicers                                         parties listed)

                               Originator                                                 Servicer
---------------------------------------------------------------------------------------------------------------------

                                      Q-7
<PAGE>

---------------------------------------------------------------------------------------------------------------------

                               Credit Enhancer/Support Provider

                               Significant Obligor                                        Depositor

                                                                                          Depositor

                                                                                          Servicer
                               ---------------------------------------------------------- ---------------------------
                               Item 1122 - Assessment of Compliance with Servicing        Each Party participating
                               Criteria                                                   in the servicing function
                               ---------------------------------------------------------- ---------------------------
                               Item 1123 - Servicer Compliance Statement                  Servicer
---------------------------------------------------------------------------------------------------------------------
</TABLE>

                                      Q-8
<PAGE>

                                    EXHIBIT R

                        FORM OF PERFORMANCE CERTIFICATION
                                    (Trustee)

               Re:  The Pooling and Servicing Agreement dated as of June 1, 2007
                    (the "Pooling and Servicing Agreement") among IndyMac MBS,
                    Inc., as Depositor, IndyMac Bank, F.S.B., as Seller and
                    Servicer, and the undersigned, as Trustee (the "Trustee")
                    ------------------------------------------------------------

     I, ________________________________, the _______________________ of the
Trustee, certify to the Depositor and the Servicer, and their officers, with the
knowledge and intent that they will rely upon this certification, that:

          (i) I have reviewed the report on assessment of the Trustee's
     compliance with the servicing criteria set forth in Item 1122(d) of
     Regulation AB (the "Servicing Criteria"), provided in accordance with Rules
     13a-18 and 15d-18 under Securities Exchange Act of 1934, as amended (the
     "Exchange Act") and Item 1122 of Regulation AB (the "Servicing
     Assessment"), the registered public accounting firm's attestation report
     provided in accordance with Rules 13a-18 and 15d-18 under the Exchange Act
     and Section 1122(b) of Regulation AB (the "Attestation Report"), all
     reports on Form 10-D containing statements to certificateholders filed in
     respect of the period included in the year covered by the annual report of
     the Trust Fund (collectively, the "Distribution Date Statements");

          (ii) Assuming the accuracy and completeness of the information
     delivered to the Trustee by the Servicer as provided in the Pooling and
     Servicing Agreement and subject to paragraph (iv) below, to its knowledge
     the distribution information determined by the Trustee and set forth in the
     Distribution Date Statements contained in all Form 10-D's included in the
     year covered by the annual report of such Trust on Form 10-K for the
     calendar year 200[ ], is complete and does not contain any material
     misstatement of fact as of the last day of the period covered by such
     annual report;

          (iii) Based solely on the information delivered to the Trustee by the
     Servicer as provided in the Pooling and Servicing Agreement, the
     distribution information required under the Pooling and Servicing Agreement
     to be contained in the Trust Fund's Distribution Date Statements, is
     included in such Distribution Date Statements;

          (iv) The Trustee is not certifying as to the accuracy, completeness or
     correctness of the information which it received from the Servicer and did
     not independently verify or confirm the accuracy, completeness or
     correctness of the information provided by the Servicer;

          (v) I am responsible for reviewing the activities performed by the
     Trustee as a person "performing a servicing function" under the Pooling and
     Servicing Agreement, and based on my knowledge and the compliance review
     conducted in preparing the Servicing Assessment and except as disclosed in
     the Servicing Assessment or the Attestation Report, the Trustee has
     fulfilled its obligations under the Pooling and Servicing Agreement; and

          (vi) The Servicing Assessment and Attestation Report required to be
     provided by the Trustee and by Subcontractor, if any, pursuant to the
     Pooling and Servicing Agreement, have been provided to the Servicer and the
     Depositor. Any material instances of noncompliance

                                      R-1
<PAGE>

     described in such reports have been disclosed to the Servicer and the
     Depositor. Any material instance of noncompliance with the Servicing
     Criteria has been disclosed in such reports.

                                        Date:    _________________________

                                        By:  ________________________________
                                               Name:
                                               Title:

                                      R-2

<PAGE>

                                    EXHIBIT S

                  FORM OF SERVICING CRITERIA TO BE ADDRESSED IN
                       ASSESSMENT OF COMPLIANCE STATEMENT

Key:
X - obligation

Where there are multiple checks for criteria the attesting party will identify
in their management assertion that they are attesting only to the portion of the
distribution chain they are responsible for in the related transaction
agreements.

<TABLE>
<CAPTION>
  ---------------------------------------------------------------------------------------------
  Reg AB Reference             Servicing Criteria             Servicer   Trustee      Notes
  ----------------- ----------------------------------------- --------- ---------- ------------
<S>                 <C>                                       <C>       <C>        <C>
   1122(d)(1)(i)    Policies and procedures are instituted       X          X
                    to monitor any performance or other
                    triggers and events of default in
                    accordance with the transaction
                    agreements.
  ----------------- ----------------------------------------- --------- ---------- ------------
   1122(d)(1)(ii)   If any material servicing activities         X          X
                    are outsourced to third parties,
                    policies and procedures are instituted
                    to monitor the third party's
                    performance and compliance with such
                    servicing activities.
  ----------------- ----------------------------------------- --------- ---------- ------------
  1122(d)(1)(iii)   Any requirements in the transaction                                NA
                    agreements to maintain a back-up
                    servicer for the Pool Assets are
                    maintained.
  ----------------- ----------------------------------------- --------- ---------- ------------
   1122(d)(1)(iv)   A fidelity bond and errors and               X
                    omissions policy is in effect on the
                    party participating in the servicing
                    function throughout the reporting
                    period in the amount of coverage
                    required by and otherwise in accordance
                    with the terms of the transaction
                    agreements.
  ---------------------------------------------------------------------------------------------

                                      S-1
<PAGE>

  ---------------------------------------------------------------------------------------------
  Reg AB Reference             Servicing Criteria             Servicer   Trustee      Notes
  ----------------- ----------------------------------------- --------- ---------- ------------
   1122(d)(2)(i)    Payments on pool assets are deposited       X           X
                    into the appropriate custodial bank
                    accounts and related bank clearing
                    accounts no more than two business
                    days following receipt, or such other
                    number of days specified in the
                    transaction agreements.
  ----------------- --------------------------------------- ----------- ----------- -----------
   1122(d)(2)(ii)   Disbursements made via wire transfer        X           X
                    on behalf of an obligor or to an
                    investor are made only by authorized
                    personnel.
  ----------------- --------------------------------------- ----------- ----------- -----------
  1122(d)(2)(iii)   Advances of funds or guarantees             X
                    regarding collections, cash flows or
                    distributions, and any interest or
                    other fees charged for such advances,
                    are made, reviewed and approved as
                    specified in the transaction
                    agreements.
  ----------------- --------------------------------------- ----------- ----------- -----------
   1122(d)(2)(iv)   The related accounts for the                X           X
                    transaction, such as cash reserve
                    accounts or accounts established as a
                    form of over collateralization, are
                    separately maintained (e.g., with
                    respect to commingling of cash) as
                    set forth in the transaction
                    agreements.
  ----------------- --------------------------------------- ----------- ----------- -----------
   1122(d)(2)(v)    Each custodial account is maintained        X           X
                    at a federally insured depository
                    institution as set forth in the
                    transaction agreements. For purposes
                    of this criterion, "federally insured
                    depository institution" with respect
                    to a foreign financial institution
                    means a foreign financial institution
                    that meets the requirements of Rule
                    13k-1(b)(1) of the Securities
                    Exchange Act.
  ----------------- --------------------------------------- ----------- ----------- -----------
   1122(d)(2)(vi)   Unissued checks are safeguarded so as       X
                    to prevent unauthorized access.
  ----------------- --------------------------------------- ----------- ----------- -----------
  1122(d)(2)(vii)   Reconciliations are prepared on a           X           X
                    monthly basis for all asset-backed
                    securities related bank accounts,
                    including custodial accounts and
                    related bank clearing accounts. These
                    reconciliations are (A)
                    mathematically accurate; (B) prepared
                    within 30 calendar days after the
                    bank statement cutoff date, or such
                    other number of days specified in the
                    transaction agreements; (C) reviewed
                    and approved by someone other than
                    the person who prepared the
                    reconciliation; and (D) contain
                    explanations for reconciling items.
                    These reconciling items are resolved
                    within 90 calendar days of their
                    original identification, or such
                    other number of days specified in the
                    transaction agreements.
  ---------------------------------------------------------------------------------------------

                                      S-2
<PAGE>

  ---------------------------------------------------------------------------------------------
  Reg AB Reference             Servicing Criteria             Servicer   Trustee      Notes
  ----------------- ----------------------------------------- --------- ---------- ------------
   1122(d)(3)(i)    Reports to investors, including those        X          X
                    to be filed with the Commission, are
                    maintained in accordance with the
                    transaction agreements and applicable
                    Commission requirements. Specifically,
                    such reports (A) are prepared in
                    accordance with timeframes and other
                    terms set forth in the transaction
                    agreements; (B) provide information
                    calculated in accordance with the
                    terms specified in the transaction
                    agreements; (C) are filed with the
                    Commission as required by its rules
                    and regulations; and (D) agree with
                    investors' or the trustee's records as
                    to the total unpaid principal balance
                    and number of Pool Assets serviced by
                    the Servicer.
  ----------------- ---------------------------------------- ---------- ---------- -------------
   1122(d)(3)(ii)   Amounts due to investors are allocated       X          X
                    and remitted in accordance with
                    timeframes, distribution priority and
                    other terms set forth in the
                    transaction agreements.
  ----------------- ---------------------------------------- ---------- ---------- -------------
  1122(d)(3)(iii)   Disbursements made to an investor are        X          X
                    posted within two business days to the
                    Servicer's investor records, or such
                    other number of days specified in the
                    transaction agreements.
  ----------------- ---------------------------------------- ---------- ---------- -------------
   1122(d)(3)(iv)   Amounts remitted to investors per the        X          X
                    investor reports agree with cancelled
                    checks, or other form of payment, or
                    custodial bank statements.
  ---------------------------------------------------------------------------------------------
</TABLE>

                                      S-3
<PAGE>

<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------------------
Reg AB Reference                 Servicing Criteria                  Servicer     Trustee     Notes
------------------ ----------------------------------------------- ------------- ----------- --------
<S>                <C>                                             <C>           <C>         <C>
  1122(d)(4)(i)    Collateral or security on pool assets is             X            X
                   maintained as required by the transaction
                   agreements or related pool asset documents.
------------------ ----------------------------------------------- ------------- ----------- --------
 1122(d)(4)(ii)    Pool assets  and related documents are               X            X
                   safeguarded as required by the transaction
                   agreements.
------------------ ----------------------------------------------- ------------- ----------- --------
 1122(d)(4)(iii)   Any additions, removals or substitutions to          X            X
                   the asset pool are made, reviewed and
                   approved in accordance with any conditions or
                   requirements in the transaction agreements.
------------------ ----------------------------------------------- ------------- ----------- --------
 1122(d)(4)(iv)    Payments on pool assets, including any               X
                   payoffs, made in accordance with the related
                   pool asset documents are posted to the
                   Servicer's obligor records maintained no more
                   than two business days after receipt, or such
                   other number of days specified in the
                   transaction agreements, and allocated to
                   principal, interest or other items (e.g.,
                   escrow) in accordance with the related pool
                   asset documents.
------------------ ----------------------------------------------- ------------- ----------- --------
  1122(d)(4)(v)    The Servicer's records regarding the pool            X
                   assets agree with the Servicer's records with
                   respect to an obligor's unpaid principal
                   balance.
------------------ ----------------------------------------------- ------------- ----------- --------
 1122(d)(4)(vi)    Changes with respect to the terms or status          X
                   of an obligor's pool assets (e.g., loan
                   modifications or re-agings) are made, reviewed
                   and approved by authorized personnel in
                   accordance with the transaction agreements
                   and related pool asset documents.
------------------ ----------------------------------------------- ------------- ----------- --------
 1122(d)(4)(vii)   Loss mitigation or recovery actions (e.g.,           X
                   forbearance plans, modifications and deeds in
                   lieu of foreclosure, foreclosures and
                   repossessions, as applicable) are initiated,
                   conducted and concluded in accordance with
                   the timeframes or other requirements
                   established by the transaction agreements.
------------------ ----------------------------------------------- ------------- ----------- --------
1122(d)(4)(viii)   Records documenting collection efforts are           X
                   maintained during the period a pool asset is
                   delinquent in accordance with the transaction
                   agreements. Such records are maintained on at
                   least a monthly basis, or such other period
                   specified in the transaction agreements, and
                   describe the entity's activities in
                   monitoring delinquent pool assets including,
                   for example, phone calls, letters and payment
                   rescheduling plans in cases where delinquency
                   is deemed temporary (e.g., illness or
                   unemployment).
------------------ ----------------------------------------------- ------------- ----------- --------
 1122(d)(4)(ix)    Adjustments to interest rates or rates of            X
                   return for pool assets with variable rates
                   are computed based on the related pool asset
                   documents.
-----------------------------------------------------------------------------------------------------
Reg AB Reference                 Servicing Criteria                  Servicer     Trustee     Notes
------------------ ----------------------------------------------- ------------- ----------- --------

                                      S-4
<PAGE>

-----------------------------------------------------------------------------------------------------
Reg AB Reference                 Servicing Criteria                  Servicer     Trustee     Notes
------------------ ----------------------------------------------- ------------- ----------- --------
  1122(d)(4)(x)    Regarding any funds held in trust for an             X
                   obligor (such as escrow accounts): (A) such
                   funds are analyzed, in accordance with the
                   obligor's pool asset documents, on at least
                   an annual basis, or such other period
                   specified in the transaction agreements; (B)
                   interest on such funds is paid, or credited,
                   to obligors in accordance with applicable
                   pool asset documents and state laws; and (C)
                   such funds are returned to the obligor within
                   30 calendar days of full repayment of the
                   related pool assets, or such other number of
                   days specified in the transaction agreements.
------------------ ----------------------------------------------- ------------- ----------- --------
 1122(d)(4)(xi)    Payments made on behalf of an obligor (such          X
                   as tax or insurance payments) are made on or
                   before the related penalty or expiration
                   dates, as indicated on the appropriate bills
                   or notices for such payments, provided that
                   such support has been received by the
                   servicer at least 30 calendar days prior to
                   these dates, or such other number of days
                   specified in the transaction agreements.
------------------ ----------------------------------------------- ------------- ----------- --------
 1122(d)(4)(xii)   Any late payment penalties in connection with        X
                   any payment to be made on behalf of an obligor
                   are paid from the Servicer's funds and not
                   charged to the obligor, unless the late
                   payment was due to the obligor's error or
                   omission.
------------------ ----------------------------------------------- ------------- ----------- --------
1122(d)(4)(xiii)   Disbursements made on behalf of an obligor           X
                   are posted within two business days to the
                   obligor's records maintained by the servicer,
                   or such other number of days specified in
                   the transaction agreements.
------------------ ----------------------------------------------- ------------- ----------- --------
 1122(d)(4)(xiv)   Delinquencies, charge-offs and uncollectible         X
                   accounts are recognized and recorded in
                   accordance with the transaction agreements.
------------------ ----------------------------------------------- ------------- ----------- --------
 1122(d)(4)(xv)    Any external enhancement or other support,           X (with       X
                   identified in Item 1114(a)(1) through (3) or       respect to
                   Item 1115 of Regulation AB, is maintained as        a swap
                   set forth in the transaction agreements.           disclosure
                                                                         event)
-----------------------------------------------------------------------------------------------------
</TABLE>

                                      S-5
<PAGE>

                                    EXHIBIT T

                       [FORM OF] LIST OF ITEM 1119 PARTIES

                            ASSET BACKED CERTIFICATES
                                 Series 200_-__

                                     [Date]

--------------------------------------------------------------------------------
Party                                  Contact Information
-------------------------------------- -----------------------------------------

-------------------------------------- -----------------------------------------

-------------------------------------- -----------------------------------------

-------------------------------------- -----------------------------------------

-------------------------------------- -----------------------------------------

-------------------------------------- -----------------------------------------

-------------------------------------- -----------------------------------------

                                       T-1
<PAGE>

                                    EXHIBIT U

                      FORM OF SARBANES-OXLEY CERTIFICATION

     Re:  IndyMac IMJA Mortgage Loan Trust 200 -
          --------------------------------------

     The undersigned Servicer hereby certifies to the Depositor and its
officers, directors and Affiliates (collectively, the "Certification Parties")
as follows, with the knowledge and intent that the Certification Parties will
rely on this Certification in connection with the certification concerning the
Trust Fund to be signed by an officer of the Depositor and submitted to the
Securities and Exchange Commission pursuant to the Sarbanes-Oxley Act of 2002:

     1. I have reviewed the servicer compliance statement of the Servicer
provided in accordance with Item 1123 of Regulation AB (the "Compliance
Statement"), the report on assessment of the Servicer's compliance with the
servicing criteria set forth in Item 1122(d) of Regulation AB (the "Servicing
Criteria"), provided in accordance with Rules 13a-18 and 15d-18 under Securities
Exchange Act of 1934, as amended (the "Exchange Act") and Item 1122 of
Regulation AB (the "Servicing Assessment"), the registered public accounting
firm's attestation report provided in accordance with Rules 13a-18 and 15d-18
under the Exchange Act and Section 1122(b) of Regulation AB (the "Attestation
Report"), and all servicing reports, officer's certificates and other
information relating to the servicing of the Mortgage Loans by the Servicer
during 200[ ] that were delivered by the Servicer to the Trustee pursuant to the
Agreement (collectively, the "Servicing Information");

     2. Based on my knowledge, the Servicing Information, taken as a whole, does
not contain any untrue statement of a material fact or omit to state a material
fact necessary to make the statements made, in the light of the circumstances
under which such statements were made, not misleading with respect to the period
of time covered by the Servicing Information;

     3. Based on my knowledge, all of the Servicing Information required to be
provided by the Servicer under the Agreement has been provided to the Depositor
or the Trustee, as applicable;

     4. I am responsible for reviewing the activities performed by the Servicer
as servicer under the Servicing Agreement (the "Pooling and Servicing
Agreement") relating to the above-referenced Series, among IndyMac MBS, Inc., as
Depositor, IndyMac Bank, F.S.B., as Seller and Servicer, and Deutsche Bank
National Trust Company, as Trustee and based on my knowledge and the compliance
review conducted in preparing the Compliance Statement and except as disclosed
in the Compliance Statement, the Pooling and Servicing Assessment or the
Attestation Report, the Servicer has fulfilled its obligations under the
Agreement in all material respects; and

     5. The Compliance Statement required to be delivered by the Servicer
pursuant to the Pooling and Servicing Agreement, and the Servicing Assessment
and Attestation Report required to be provided by the Servicer and by any
Reporting Subcontractor pursuant to the Agreement, have been provided to the
Depositor. Any material instances of noncompliance described in such reports
have been disclosed to the Depositor. Any material instance of noncompliance
with the Servicing Criteria has been disclosed in such reports.

                                       U-1

<PAGE>

                                        [SERVICER]

                                        By:________________________________
                                           Name:
                                           Title:
                                        Date: _________________________

                                       U-2efc7-1899_6248237exh41.htm

    

    EXHIBIT
      4.1

     

    The
      Pooling and Servicing Agreement.

     

    

    
      
        
          
          

        

        
          
          

          
            

          

        

        
          
          

        

      

    

    

    EXECUTION
      COPY

    

    
      
        

        

      

      
 

    

     

    INDYMAC
      MBS,
      INC.

    Depositor

     

    INDYMAC
      BANK,
      F.S.B.

    Seller
      and Servicer

     

    DEUTSCHE
      BANK
      NATIONAL
      TRUST
      COMPANY

    Trustee

     

    ________________________________________

     

    POOLING
      AND
      SERVICING
      AGREEMENT

    Dated
      as
      of June 1, 2007

    ________________________________________

     

    INDYMAC
      IMSC MORTGAGE
      LOAN
      TRUST

    2007-AR1

     

    MORTGAGE
      PASS-THROUGH
      CERTIFICATES

    Series
      2007-AR1

     

    
      

      
        

        

      

       

      

    

    

    
      
        
          
          

        

        
          
          

          
            

          

        

        
          
          

        

      

    

    
      

      
        	
                TABLE
                  OF CONTENTS

              
	 
	 	 	
                Page

              
	 	 	 
	
                ARTICLE
                  ONE DEFINITIONS

              	
                8

              
	 	 
	
                Section
                  1.01

              	
                Definitions.

              	
                8

              
	
                Section
                  1.02

              	
                Rules
                  of Construction.

              	
                39

              
	 	 	 
	
                ARTICLE
                  TWO CONVEYANCE OF MORTGAGE LOANS; REPRESENTATIONS AND
                  WARRANTIES

              	
                41

              
	 	 
	
                Section
                  2.01

              	
                Conveyance
                  of Mortgage Loans.

              	
                41

              
	
                Section
                  2.02

              	
                Acceptance
                  by the Trustee of the Mortgage Loans.

              	
                44

              
	
                Section
                  2.03

              	
                Representations,
                  Warranties, and Covenants of the Seller and the Servicer.

              	
                46

              
	
                Section
                  2.04

              	
                Representations
                  and Warranties of the Depositor as to the Mortgage Loans.

              	
                48

              
	
                Section
                  2.05

              	
                Delivery
                  of Opinion of Counsel in Connection with Substitutions.

              	
                48

              
	
                Section
                  2.06

              	
                Execution
                  and Delivery of Certificates.

              	
                49

              
	
                Section
                  2.07

              	
                REMIC
                  Matters.

              	
                49

              
	 	 	 
	
                ARTICLE
                  THREE ADMINISTRATION AND SERVICING OF MORTGAGE LOANS

              	
                50

              
	 	 
	
                Section
                  3.01

              	
                Servicer
                  to Service Mortgage Loans.

              	
                50

              
	
                Section
                  3.02

              	
                [Reserved].

              	
                51

              
	
                Section
                  3.03

              	
                Rights
                  of the Depositor and the Trustee in Respect of the
                  Servicer.

              	
                51

              
	
                Section
                  3.04

              	
                [Reserved].

              	
                51

              
	
                Section
                  3.05

              	
                Trustee
                  to Act as Servicer.

              	
                51

              
	
                Section
                  3.06

              	
                Collection
                  of Mortgage Loan Payments; Certificate Account; Distribution
                  Account.

              	
                51

              
	
                Section
                  3.07

              	
                Collection
                  of Taxes, Assessments and Similar Items; Escrow Accounts.

              	
                54

              
	
                Section
                  3.08

              	
                Access
                  to Certain Documentation and Information Regarding the Mortgage
                  Loans.

              	
                55

              
	
                Section
                  3.09

              	
                Permitted
                  Withdrawals from the Certificate Account and the Distribution
                  Account.

              	
                55

              
	
                Section
                  3.10

              	
                Maintenance
                  of Hazard Insurance; Maintenance of Primary Insurance
                  Policies.

              	
                56

              
	
                Section
                  3.11

              	
                Enforcement
                  of Due-On-Sale Clauses; Assumption Agreements.

              	
                57

              
	
                Section
                  3.12

              	
                Realization
                  Upon Defaulted Mortgage Loans.

              	
                58

              
	
                Section
                  3.13

              	
                Trustee
                  to Cooperate; Release of Mortgage Files.

              	
                60

              
	
                Section
                  3.14

              	
                Documents,
                  Records and Funds in Possession of the Servicer to be Held for
                  the
                  Trustee.

              	
                61

              
	
                Section
                  3.15

              	
                Servicing
                  Compensation.

              	
                61

              
	
                Section
                  3.16

              	
                Access
                  to Certain Documentation.

              	
                62

              
	
                Section
                  3.17

              	
                Annual
                  Statement as to Compliance.

              	
                62

              
	
                Section
                  3.18

              	
                Errors
                  and Omissions Insurance; Fidelity Bonds.

              	
                62

              
	
                Section
                  3.19

              	
                Notification
                  of Adjustments.

              	
                63

              
	
                Section
                  3.20

              	
                Prepayment
                  Charges.

              	
                63

              
	
                Section
                  3.21

              	
                Late
                  Payment Fees.

              	
                64

              

      

      
        
          
          

        

        
          i

          
            

          

        

        
          
          

        

      

      

      
        	
                ARTICLE
                  FOUR DISTRIBUTIONS AND ADVANCES BY THE SERVICER

              	
                65

              
	 	 
	
                Section
                  4.01

              	
                Advances.

              	
                65

              
	
                Section
                  4.02

              	
                Priorities
                  of Distribution.

              	
                66

              
	
                Section
                  4.03

              	
                Cross-Collateralization;
                  Adjustments to Available Funds

              	
                70

              
	
                Section
                  4.04

              	
                [Reserved].

              	
                70

              
	
                Section
                  4.05

              	
                Allocation
                  of Realized Losses.

              	
                70

              
	
                Section
                  4.06

              	
                Monthly
                  Statements to Certificateholders.

              	
                72

              
	 	 	 
	
                ARTICLE
                  FIVE THE CERTIFICATES

              	
                76

              
	 	 
	
                Section
                  5.01

              	
                The
                  Certificates.

              	
                76

              
	
                Section
                  5.02

              	
                Certificate
                  Register; Registration of Transfer and Exchange of
                  Certificates.

              	
                76

              
	
                Section
                  5.03

              	
                Mutilated,
                  Destroyed, Lost or Stolen Certificates.

              	
                80

              
	
                Section
                  5.04

              	
                Persons
                  Deemed Owners.

              	
                80

              
	
                Section
                  5.05

              	
                Access
                  to List of Certificateholders’ Names and Addresses.

              	
                80

              
	
                Section
                  5.06

              	
                Maintenance
                  of Office or Agency.

              	
                81

              
	 	 	 
	
                ARTICLE
                  SIX THE DEPOSITOR AND THE SERVICER

              	
                82

              
	 	 
	
                Section
                  6.01

              	
                Respective
                  Liabilities of the Depositor and the Servicer.

              	
                82

              
	
                Section
                  6.02

              	
                Merger
                  or Consolidation of the Depositor or the Servicer.

              	
                82

              
	
                Section
                  6.03

              	
                Limitation
                  on Liability of the Depositor, the Seller, the Servicer, and
                  Others.

              	
                82

              
	
                Section
                  6.04

              	
                Limitation
                  on Resignation of the Servicer.

              	
                83

              
	 	 	 
	
                ARTICLE
                  SEVEN DEFAULT

              	
                84

              
	 	 
	
                Section
                  7.01

              	
                Events
                  of Default.

              	
                84

              
	
                Section
                  7.02

              	
                Trustee
                  to Act; Appointment of Successor.

              	
                85

              
	
                Section
                  7.03

              	
                Notification
                  to Certificateholders.

              	
                86

              
	 	 	 
	
                ARTICLE
                  EIGHT CONCERNING THE TRUSTEE

              	
                88

              
	 	 
	
                Section
                  8.01

              	
                Duties
                  of the Trustee.

              	
                88

              
	
                Section
                  8.02

              	
                Certain
                  Matters Affecting the Trustee.

              	
                88

              
	
                Section
                  8.03

              	
                Trustee
                  Not Liable for Certificates or Mortgage Loans.

              	
                90

              
	
                Section
                  8.04

              	
                Trustee
                  May Own Certificates.

              	
                90

              
	
                Section
                  8.05

              	
                Trustee’s
                  Fees and Expenses.

              	
                90

              
	
                Section
                  8.06

              	
                Eligibility
                  Requirements for the Trustee.

              	
                91

              
	
                Section
                  8.07

              	
                Resignation
                  and Removal of the Trustee.

              	
                91

              
	
                Section
                  8.08

              	
                Successor
                  Trustee.

              	
                92

              
	
                Section
                  8.09

              	
                Merger
                  or Consolidation of the Trustee.

              	
                93

              
	
                Section
                  8.10

              	
                Appointment
                  of Co-Trustee or Separate Trustee.

              	
                93

              
	
                Section
                  8.11

              	
                Tax
                  Matters.

              	
                94

              
	 	 	 
	
                ARTICLE
                  NINE TERMINATION

              	
                97

              
	 	 
	
                Section
                  9.01

              	
                Termination
                  upon Liquidation or Purchase of the Mortgage Loans.

              	
                97

              
	
                Section
                  9.02

              	
                Final
                  Distribution on the Certificates.

              	
                98

              

      

      
        
          
          

        

        
          ii

          
            

          

        

        
          
          

        

      

      

      
        	
                Section
                  9.03

              	
                Additional
                  Termination Requirements.

              	
                99

              
	 	 	 
	
                ARTICLE
                  TEN MISCELLANEOUS PROVISIONS

              	
                100

              
	 	 
	
                Section
                  10.01

              	
                Amendment.

              	
                100

              
	
                Section
                  10.02

              	
                Recordation
                  of Agreement; Counterparts.

              	
                101

              
	
                Section
                  10.03

              	
                Governing
                  Law.

              	
                102

              
	
                Section
                  10.04

              	
                Intention
                  of Parties.

              	
                102

              
	
                Section
                  10.05

              	
                Notices.

              	
                102

              
	
                Section
                  10.06

              	
                Severability
                  of Provisions.

              	
                103

              
	
                Section
                  10.07

              	
                Assignment

              	
                103

              
	
                Section
                  10.08

              	
                Limitation
                  on Rights of Certificateholders.

              	
                103

              
	
                Section
                  10.09

              	
                Inspection
                  and Audit Rights.

              	
                104

              
	
                Section
                  10.10

              	
                Certificates
                  Nonassessable and Fully Paid.

              	
                104

              
	
                Section
                  10.11

              	
                Official
                  Record.

              	
                104

              
	
                Section
                  10.12

              	
                Protection
                  of Assets.

              	
                105

              
	
                Section
                  10.13

              	
                Qualifying
                  Special Purpose Entity.

              	
                105

              
	 	 	 
	
                ARTICLE
                  ELEVEN EXCHANGE ACT REPORTING

              	
                105

              
	 	 
	
                Section
                  11.01

              	
                Filing
                  Obligations.

              	
                105

              
	
                Section
                  11.02

              	
                Form
                  10-D Filings.

              	
                105

              
	
                Section
                  11.03

              	
                Form
                  8-K Filings.

              	
                106

              
	
                Section
                  11.04

              	
                Form
                  10-K Filings.

              	
                107

              
	
                Section
                  11.05

              	
                Sarbanes-Oxley
                  Certification.

              	
                109

              
	
                Section
                  11.06

              	
                Form
                  15 Filing.

              	
                109

              
	
                Section
                  11.07

              	
                Report
                  on Assessment of Compliance and Attestation.

              	
                110

              
	
                Section
                  11.08

              	
                Use
                  of Subcontractors.

              	
                111

              
	
                Section
                  11.09

              	
                Amendments.

              	
                111

              

      

      

      
        
          
          

        

        
          iii

          
            

          

        

        
          
          

        

      

    
      	
              SCHEDULES

            
	
              Schedule
                I:

            	
              Mortgage
                Loan Schedule

            	
              S-I-1

            
	 	 	 
	
              Schedule
                II:

            	
              Representations
                and Warranties of the Seller/Servicer

            	
              S-II-1

            
	 	 	 
	
              Schedule
                III:

            	
              Representations
                and Warranties as to the Mortgage Loans

            	
              S-III-1

            
	 	 	 
	
              Schedule
                IV:

            	
              Reserved

            	
              S-IV-1

            
	 	 	 
	
              Schedule
                V:

            	
              Form
                of Monthly Report

            	
              S-V-1

            

    

    

    

    
      	
              EXHIBITS

            
	 	 	 
	
              Exhibit
                A:

            	
              Form
                of Senior Certificate

            	
              A-1

            
	 	 	 
	
              Exhibit
                B:

            	
              Form
                of Subordinated Certificate

            	
              B-1

            
	 	 	 
	
              Exhibit
                C:

            	
              Form
                of Class A-R Certificate

            	
              C-1

            
	 	 	 
	
              Exhibit
                D:

            	
              [Reserved]

            	
              D-1

            
	 	 	 
	
              Exhibit
                E

            	
              Form
                of Reverse of Certificates

            	
              E-1

            
	 	 	 
	
              Exhibit
                F-1:

            	
              Form
                of Class P Certificates

            	
              F-1-1

            
	 	 	 
	
              Exhibit
                F-2:

            	
              Form
                of Class L Certificates

            	
              F-2-1

            
	 	 	 
	
              Exhibit
                G-1:

            	
              Form
                of Initial Certification of Trustee

            	
              G-1-1

            
	 	 	 
	
              Exhibit
                G-2:

            	
              Form
                of Delay Delivery Certification

            	
              G-2-1

            
	 	 	 
	
              Exhibit
                H:

            	
              Form
                of Final Certification of Trustee

            	
              H-1

            
	 	 	 
	
              Exhibit
                I:

            	
              Form
                of Transfer Affidavit

            	
              I-1

            
	 	 	 
	
              Exhibit
                J:

            	
              Form
                of Transferor Certificate

            	
              J-1

            
	 	 	 
	
              Exhibit
                K:

            	
              Form
                of Investment Letter (Non-Rule 144A)

            	
              K-1

            
	 	 	 
	
              Exhibit
                L:

            	
              Form
                of Rule 144A Letter

            	
              L-1

            
	 	 	 
	
              Exhibit
                M:

            	
              Form
                of Request for Release (for Trustee)

            	
              M-1

            
	 	 	 
	
              Exhibit
                N:

            	
              Request
                for Release of Documents

            	
              N-1

            
	 	 	 
	
              Exhibit
                O-1:

            	
              Form
                of Certification to be Provided by the Depositor with Form
                10-K

            	
              O-1-1

            
	 	 	 
	
              Exhibit
                O-2:

            	
              Form
                of Trustee’s Officer’s Certificate

            	
              O-2-1

            
	 	 	 

    

    

    

    
      
        
          
          

        

        
          iv

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              Exhibit
                P:

            	
              [Reserved]

            	
              P-1

            
	 	 	 
	
              Exhibit
                Q:

            	
              Form
                10-D, Form 8-K and Form 10-K Reporting Responsibility

            	
              Q-1

            
	 	 	 
	
              Exhibit
                R:

            	
              Form
                of Performance Certification (Trustee)

            	
              R-1

            
	 	 	 
	
              Exhibit
                S:

            	
              Form
                of Servicing Criteria To Be Addressed in Assessment of Compliance
                Statement

            	
              S-1

            
	 	 	 
	
              Exhibit
                T:

            	
              List
                of Item 1119 Parties

            	
              T-1

            
	 	 	 
	
              Exhibit
                U:

            	
              Form
                of Sarbanes-Oxley Certification (Replacement of Servicer)

            	
              U-1

            

    

    

    

    
      
        
          
          

        

        
          v

          
            

          

        

        
          
          

        

      

    

    

    THIS
      POOLINGAND
      SERVICING
      AGREEMENT,
      dated as of June 1, 2007, among INDYMAC
      MBS,
      INC.,
      a Delaware corporation, as depositor (the
“Depositor”), IndyMac Bank,
      F.S.B.  (“IndyMac”), a federal savings bank,
      as seller (in that capacity, the “Seller”) and as
      servicer (in that capacity, the “Servicer”), and
      Deutsche Bank National Trust Company, a national banking association, as trustee
      (the “Trustee”),

     

    
      W
        ITNESSETH  T
        H
        A
        T

    

     

    In
      consideration of the mutual agreements set forth in this Agreement, the parties
      agree as follows:

     

    P
      R
      E
      L I M I N A R Y  S
      T
      A
      T E M E N T

     

    The
      Depositor is the owner of the Trust Fund that is hereby conveyed to the Trustee
      in return for the Certificates.  As provided in this Agreement, the
      Trustee shall elect that the Trust Fund (exclusive of any amounts in respect
      of
      waived Prepayment Charges paid by the Servicer to the Class P Certificates
      pursuant to Section 3.20(b) and any amounts in respect of waived Late Payment
      Fees paid by the Servicer to the Class L Certificates pursuant to Section
      3.21(b)) be treated for federal income tax purposes as comprising two real
      estate mortgage investment conduits (each, a “REMIC”
or, in the alternative, “REMIC 1” and the
“Master
      REMIC”).  Each Certificate, other
      than the Class A-R and Class L Certificates, will represent ownership of one
      or
      more regular interests in the Master REMIC for purposes of the REMIC
      Provisions.  The Class A-R represents ownership of the sole class of
      residual interest in each REMIC created under this Agreement.  The
      Master REMIC will hold as assets the several classes of uncertificated REMIC
      1
      Interests (other than the Class R-1 Interest).  REMIC 1 will hold as
      assets all property of the Trust Fund.  Each REMIC 1 Interest (other
      than the Class R-1 Interest) is hereby designated as a regular interest in
      REMIC
      1.  The latest possible maturity date of all REMIC regular interests
      created in this Agreement shall be the Latest Possible Maturity
      Date.  All amounts in respect of waived Prepayment Charges paid by the
      Servicer to the Class P Certificates pursuant to Section 3.20(b) will be treated
      as paid directly by the Servicer to the Class P Certificates and not as paid
      by
      or through any REMIC created under this Agreement.  All amounts in
      respect of waived Late Payment Fees paid by the Servicer to the Class L
      Certificates will be treated as paid directly by the Servicer to the Class
      L
      Certificates pursuant to Section 3.21(b) and not as paid by or through any
      REMIC
      created under this Agreement or by or through the Grantor Trust described in
      this Agreement.

     

    REMIC
      1

     

    The
      REMIC
      1 Regular Interests will have the initial principal balance, Pass-Through Rates
      and corresponding Loan Groups as set forth in the following table:

     

    
      	
              REMIC
                1 Interests

            	
              Initial
                Principal

              Balance

            	
              Pass-Through

              Rate

            	
              Corresponding

              Loan
                Group

            
	
              A-1  (0.9%
                of the Assumed Balance of Loan Group 1)

            	
              (1)

            	
              (2)

            	
              1

            
	
              B-1  (0.1%
                of the Assumed Balance of Loan Group 1)

            	
              (1)

            	
              (2)

            	
              1

            
	
              C-1  (Excess
                of Loan Group 1)

            	
              (1)

            	
              (2)

            	
              1

            
	
              A-2  (0.9%
                of the Assumed Balance of Loan Group 2)

            	
              (1)

            	
              (2)

            	
              2

            
	
              B-2  (0.1%
                of the Assumed Balance of Loan Group 2)

            	
              (1)

            	
              (2)

            	
              2

            
	
              C-2  (Excess
                of Loan Group 2)

            	
              (1)

            	
              (2)

            	
              2

            

    

    

    
      
        
          
          

        

        
          1

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              A-3  (0.9%
                of the Assumed Balance of Loan Group 3)

            	
              (1)

            	
              (2)

            	
              3

            
	
              B-3  (0.1%
                of the Assumed Balance of Loan Group 3)

            	
              (1)

            	
              (2)

            	
              3

            
	
              C-3  (Excess
                of Loan Group 3)

            	
              (1)

            	
              (2)

            	
              3

            
	
              1-P-1

            	
              $100

            	
              (3)

            	
              N/A

            
	
              1-P-2

            	
              $100

            	
              (3)

            	
              N/A

            
	
              1-$100

            	
              $100

            	
              (4)

            	
              N/A

            
	
              R-1

            	
              (5)

            	
              (5)

            	
              N/A

            

    

    _______________

    (1)
      Each
      Class A Interest will have a principal balance initially equal to 0.9% of the
      Assumed Balance of its corresponding Loan Group. Each Class B Interest will
      have
      a principal balance initially equal to 0.1% of the the Assumed Balance of its
      corresponding Loan Group. The initial principal balance of each Class C Interest
      will equal the excess of the initial aggregate principal balance of its
      corresponding Loan Group over the initial aggregate principal balances of the
      Class A and Class B Interests (and of the Class  1-$100 Interest, in
      the case of the Class C-1 Interest) corresponding to such Loan
      Group.

     

    (2)
      The
      Weighted Average Adjusted Net Mortgage Rate of the Mortgage Loans in the
      corresponding Loan Group.

     

    (3)
      The
      Class 1-P Interests will not bear interest.  The Class 1-P Interests
      will be entitled to 100% of any Prepayment Charges paid on the Mortgage
      Loans.

     

    (4)
      The
      Weighted Average Adjusted Net Mortgage Rate of Mortgage Loans in Loan Group
      1.

     

    (5)
      The
      Class R-1 Interest is the sole class of residual interest in REMIC 1. It has
      no
      principal balance and pays no principal or interest.

     

    On
      each
      Distribution Date, the Available Funds shall be distributed with respect to
      the
      REMIC 1 Interests in the following manner:

     

    (1)
      Interest is to be distributed with respect to each REMIC 1 Interest according
      to
      the formulas described above;

     

    (2)           Principal
      Amounts and Realized Losses will be allocated to make the balances of the Class
      1-P and Class 1-$100 Interest equal to the principal balances of the Class
      P and
      Class A-R Certificates, respectively, for such Distribution Date.

     

    (3)
      If
      Cross-Over Situation does not exist with respect to any Class of Interests,
      then
      Principal Amounts and Realized Losses arising with respect to each Loan Group
      will be allocated: first to cause the Loan Group's corresponding Class A and
      Class B Interest to equal, respectively, 0.9% of the Assumed Balance and 0.1%
      of
      the Assumed Balance; and second to the Loan Group’s corresponding Class C
      Interest;

     

    (4)
      If a
      Cross-Over Situation exists with respect to the Class A and Class B Interests
      then:

     

    (a)
      if
      the Calculation Rate in respect of the outstanding Class A and Class B Interests
      is less than the Subordinate Pass-Through Rate, Principal Relocation Payments
      will be made proportionately to the outstanding Class A Interests prior to
      any
      other distributions of principal from each such Loan Group; and

     

    

    
      
        
          
          

        

        
          2

          
            

          

        

        
          
          

        

      

    

    

    (b)
      if
      the Calculation Rate in respect of the outstanding Class A and Class B Interests
      is greater than the Subordinate Pass-Through Rate, Principal Relocation Payments
      will be made proportionately to the outstanding Class B Interests prior to
      any
      other distributions of principal from each such Loan Group.

     

    In
      case
      of either (a) or (b), Principal Relocation Payments will be made so as to cause
      the Calculation Rate in respect of the outstanding Class A and Class B Interests
      to equal the Subordinate Pass-Through Rate. With respect to each Loan Group,
      if
      (and to the extent that) the sum of (a) the principal payments comprising the
      Principal Amount received during the Due Period and (b) the Realized Losses
      on
      the Mortgage Loans in that Loan Group, are insufficient to make the necessary
      reductions of principal on the Class A and Class B Interests, then interest
      will
      be added to the Loan Group's other REMIC 1 Interests that are not receiving
      Principal Relocation Payments, in proportion to their principal
      balances.

     

    (c)
      Unless otherwise required to achieve the Calculation Rate, the outstanding
      aggregate Class A and Class B Interests for all Loan Groups will not be reduced
      below 1% of the excess of (i) the aggregate Stated Principal Balances of the
      Mortgage Loans as of the end of any Due Period (reduced by any Principal
      Prepayments received after the Due Period that are to be distributed on the
      Distribution Date related to the Due Period)over (ii) the Certificate Balance
      of
      the Senior Certificates (excluding the Class A-R Certificates) for all
      Certificate Groups as of the related Distribution Date (after taking into
      account distributions of principal on such Distribution Date).

     

    If
      (and
      to the extent that) the limitation in paragraph (c) prevents the distribution
      of
      principal to the Class A and Class B Interests of a Loan Group, and if the
      Loan
      Group's Class C Interest has already been reduced to zero, then the excess
      principal from that Loan Group will be paid to the Class C Interests of the
      other Loan Group, the aggregate Class A and Class B Interests of which are
      less
      than 1% of the Assumed Balance.  If the Mortgage Loans in the Loan
      Group of the Class C Interest that receives such payment has a Weighted Average
      Adjusted Net Mortgage Rate below the Weighted Average Adjusted Net Mortgage
      Rate
      of the Loan Group making the payment, then the payment will be treated by the
      REMIC 1 as a Realized Loss. Conversely, if the Mortgage Loans in that Loan
      Group
      of the Class C Interest that receives such payment has a Weighted Average
      Adjusted Net Mortgage Rate above the Weighted Average Adjusted Net Mortgage
      Rate
      of the Loan Group making the payment, then the payment will be treated by the
      REMIC 1 as a reimbursement for prior Realized Losses.

     

    The
      Master REMIC

     

    The
      following table sets forth characteristics of the Certificates, together with
      the minimum denominations and integral multiples in excess thereof in which
      such
      Classes shall be issuable (except that one Certificate of the Class B-4, Class
      B-5 and Class B-6 Certificates may be issued in a different
      amount):

     

    
      	
              Class
                Designation

            	 	
              Initial
                Class Certificate Balance

            	 	 	
              Pass-Through

              Rate

            	 	 	
              Minimum
                Denomination

            	 	 	
              Integral
                Multiples in Excess of Minimum

            	 
	
              Class 1-A-1

            	 	$	
              33,045,000

            	 	 	
              Variable(1)

            	 	 	$	
              25,000

            	 	 	$	
              1

            	 
	
              Class 1-A-2

            	 	$	
              3,670,000

            	 	 	
              Variable(1)

            	 	 	$	
              25,000

            	 	 	$	
              1

            	 
	
              Class 2-A-1

            	 	$	
              485,185,000

            	 	 	
              Variable(2)

            	 	 	$	
              25,000

            	 	 	$	
              1

            	 
	
              Class 2-A-2

            	 	$	
              52,700,000

            	 	 	
              Variable(2)

            	 	 	$	
              25,000

            	 	 	$	
              1

            	 
	
              Class
                3-A-1

            	 	$	
              53,655,000

            	 	 	
              Variable
                (3)

            	 	 	$	
              25,000

            	 	 	$	
              1

            	 
	
              Class A-R

            	 	$	
              100

            	 	 	 	(1	)	 	$	
              100

            	 	 	
              N/A

            	 
	
              Class B-1

            	 	$	
              25,757,000

            	 	 	
              Variable(4)

            	 	 	$	
              25,000

            	 	 	$	
              1,000

            	 
	
              Class B-2

            	 	$	
              14,270,000

            	 	 	
              Variable(4)

            	 	 	$	
              25,000

            	 	 	$	
              1,000

            	 

    

    

    
      
        
          
          

        

        
          3

          
            

          

        

        
          
          

        

      

    

    

    

    
      	             	 
	
              Class B-3

            	 	$	
              7,658,000

            	 	
              Variable(4)

            	 	$	
              25,000

            	 	 	$	
              1,000

            	 
	
              Class
                B-4

            	 	$	
              8,701,000

            	 	
              Variable(4)

            	 	$	
              100,000

            	 	 	$	
              1,000

            	 
	
              Class
                B-5

            	 	$	
              6,265,000

            	 	
              Variable(4)

            	 	$	
              100,000

            	 	 	$	
              1,000

            	 
	
              Class
                B-6

            	 	$	
              5,221,417

            	 	
              Variable(4)

            	 	$	
              100,000

            	 	 	$	
              1,000

            	 
	
              Class
                P-1

            	 	$	
              100

            	 	
              N/A(5)

            	 	$	
              100

            	 	 	
              N/A

            	 
	
              Class
                P-2

            	 	$	
              100

            	 	
              N/A(6)

            	 	$	
              100

            	 	 	
              N/A

            	 
	
              Class
                L

            	 	
              N/A

            	 	
              N/A(7)

            	 	 	(6	)	 	 	(6	)

    

    

    (1)The
      Pass-Through Rate for the Class 1-A-1 and Class 1-A-2 and Class A-R Certificates
      for the Interest Accrual Period related to each Distribution Date will equal
      the
      Weighted Average Adjusted Net Mortgage Rate of the Group 1 Mortgage
      Loans.  The Pass-Through Rate for the Class 1-A-1, Class 1-A-2 and
      Class A-R Certificates for the Interest Accrual Period related to the first
      Distribution Date is 6.03452% per annum.

     

    (2)The
      Pass-Through Rate for the Class 2-A-1 and Class 2-A-2 Certificates for the
      Interest Accrual Period related to each Distribution Date will equal the
      Weighted Average Adjusted Net Mortgage Rate of the Group 2 Mortgage
      Loans.  The Pass-Through Rate for the Class 2-A-1 and Class 2-A-2
      Certificates for the Interest Accrual Period related to the first Distribution
      Date is 6.61264% per annum.

     

    (3)The
      Pass-Through Rate for the Class 3-A-1 Certificates for the Interest Accrual
      Period related to each Distribution Date will equal the Weighted Average Net
      Mortgage Rate of the Group 3 Mortgage Loans.  The Pass-Through Rate
      for the Class 3-A-1 Certificates for the Interest Accrual Period related to
      the
      first Distribution Date is 6.24337% per annum.

     

    (4)The
      Pass-Through Rate for each Class of Subordinated Certificates for the Interest
      Accrual Period for any Distribution Date will be a per annum rate equal to
      the
      Subordinate Pass-Through Rate. The Pass-Through Rate for the Subordinated
      Certificates for the Interest Accrual Period related to the first Distribution
      Date is 6.54732% per annum.  For federal income tax purposes, the
      Pass-Through Rate for each class of Subordinated Certificates will be the
      Calculation Rates.

     

    (5)The
      Class
      P-1 Certificates will not be entitled to any interest, but will be entitled
      to
      100% of any Hard Prepayment Charges collected on the Mortgage
      Loans.  All amounts in respect of waived Prepayment Charges paid by
      the Servicer to the Class P-1 Certificates pursuant to Section 3.20(b) will
      be
      treated as paid directly by the Servicer to the Class P-1 Certificates and
      not
      as paid by or through any REMIC created under this Agreement.  The
      Class P-1 Certificate shall be issued as a single certificate.

     

    (6)The
      Class
      P-2 Certificates will not be entitled to any interest, but will be entitled
      to
      100% of any Soft Prepayment Charges collected on the Mortgage
      Loans.  All amounts in respect of waived Prepayment Charges paid by
      the Servicer to the Class P-2 Certificates pursuant to Section 3.20(b) will
      be
      treated as paid directly by the Servicer to the Class P-2 Certificates and
      not
      as paid by or through any REMIC created under this Agreement.  The
      Class P-2 Certificate shall be issued as a single certificate.

     

    (7)The
      Class
      L Certificates will not evidence an interest in any REMIC and will not be
      entitled to any interest but will be entitled to 100% of the Late Payment Fees
      collected.  For federal income tax purposes, the Trustee will treat
      the Late Payment Fees as beneficially owned by the Holders of the Class L
      Certificates and shall treat such portion of the Trust Fund as an interest
      in a
“trust” within the meaning of Treasury Regulations section 301.7701-4(a) (the
“Grantor Trust”).  The Class L Certificate shall be issued as a single
      certificate.

     

    

    
      
        
          
          

        

        
          4

          
            

          

        

        
          
          

        

      

    

    

    The
      foregoing REMIC structure is intended to cause all of the cash from the Mortgage
      Loans to flow through to the Master REMIC as cash flow on a REMIC regular
      interest, without creating any shortfall—actual or potential (other than for
      credit losses) to any REMIC regular interest.

     

    For
      any
      purpose for which the Pass-Through Rates is calculated, the interest rate on
      the
      Mortgage Loans shall be appropriately adjusted to account for the difference
      between the monthly day count convention of the Mortgage Loans and the monthly
      day count convention of the regular interests issued by each of the
      REMICs.  For purposes of calculating the Pass-Through Rates for each
      of the interests issued by REMIC 1 and the Master REMIC such rates shall be
      adjusted to equal a monthly day count convention based on a 30 day month for
      each Due Period and a 360-day year so that the Mortgage Loans and all regular
      interests will be using the same monthly day count convention.

     

    Set
      forth
      below are designations of Classes of Certificates to the categories used in
      this
      Agreement:

     

    Accretion
      Directed Certificates

    

    None.

    

    Accrual
      Certificates

    

    None.

    

    Book-Entry
      Certificates

    

    All
      Classes of Certificates other than the Physical Certificates.

    

    Class
      P
      Certificates

    

    Class
      P-1
      and Class P-2 Certificates

    

    COFI
      Certificates

    

    None.

    

    Components

    

    None.

    

    Component
      Certificates

    

    None.

    

    Delay
      Certificates

    

    All
      interest-bearing Classes of Certificates other than any Non-Delay
      Certificates.

    

    ERISA-Restricted
      Certificates,

    

    The
      Residual Certificates and the Private Certificates; the Retained Certificates
      (other than the Private Certificates) until they have been the subject of an
      ERISA-Qualifying Underwriting; and Certificates that cease to have a rating
      of
      BBB- (or its equivalent), or better, from at least one Rating
      Agency.

    

    Group
      1
      Senior Certificates

    

    Class
      1-A-1, Class 1-A-2 and Class A-R Certificates.

    

    Group
      1
      Certificates

    

    Group
      1
      Senior Certificates and the portion of the Subordinated Certificates related
      to
      Loan Group 1.

    

    Group
      2
      Senior Certificates

    

    Class
      2-A-1 and Class 2-A-2 Certificates.

    

    

    
      
        
          
          

        

        
          5

          
            

          

        

        
          
          

        

      

    

    

    Group
      2
      Certificates

    

    Group
      2
      Senior Certificates and the portion of the Subordinated Certificates related
      to
      Loan Group 2.

    

    Group
      3
      Senior Certificates

    

    Class
      3-A-1 Certificates.

    

    Group
      3
      Certificates

    

    Group
      3
      Senior Certificates and the portion of the Subordinated Certificates related
      to
      Loan Group 3.

    

    LIBOR
      Certificates

    

    None.

    

    Non-Delay
      Certificates

    

    LIBOR
      Certificates.

    

    Notional
      Amount Certificates

    

    None.

    

    Notional
      Amount Components

    

    None.

    

    Offered
      Certificates

    

    All
      Classes of Certificates other than the Private Certificates.

    

    Physical
      Certificates

    

    Class
      A-R
      Certificates and the Private Certificates.

    

    Planned
      Principal Classes

    

    None.

    

    Principal
      Only Certificates

    

    None.

    

    Private
      Certificates

    

    Class
      P-1, Class P-2, Class L, Class B-4, Class B-5 and Class B-6
      Certificates.

    

    Rating
      Agencies

    

    Moody’s
      and S&P.

    

    Regular
      Certificates

    

    All
      Classes of Certificates other than the Class A-R Certificates.

    

    Residual
      Certificate

    

    Class
      A-R
      Certificates.

    

    Retained
      Certificates

    

    Class
      3-A-1, Class B-1, Class B-2, Class B-3, Class B-4, Class B-5, Class B-6, Class
      P
      and Class L Certificates

    

    Senior
      Certificates

    

    Class
      1-A-1, Class 1-A-2, Class 2-A-1, Class 2-A-2, Class 3-A-1 and Class A-R
      Certificates.

    

    Senior
      Certificate Group

    

    The
      Group
      1 Senior Certificates, the Group 2 Senior Certificates and the Group 3 Senior
      Certificates, as applicable.

    

    Subordinated
      Certificates

    

    Class
      B-1, Class B-2, Class B-3, Class B-4, Class B-5 and Class B-6
      Certificates.

    

    

    
      
        
          
          

        

        
          6

          
            

          

        

        
          
          

        

      

    

    

    Targeted
      Principal Classes

    

    None.

    

    Targeted
      Principal Component

    

    None.

    

    

    

    With
      respect to any of the foregoing designations as to which the corresponding
      reference is “None,” all defined terms and provisions in this Agreement relating
      solely to such designations shall be of no force or effect, and any calculations
      in this Agreement incorporating references to such designations shall be
      interpreted without reference to such designations and
      amounts.  Defined terms and provisions in this Agreement relating to
      statistical rating agencies not designated above as Rating Agencies shall be
      of
      no force or effect.

     

    

    
      
        
          
          

        

        
          7

          
            

          

        

        
          
          

        

      

    

    

    ARTICLE
      ONE

     

    DEFINITIONS

     

    Section
      1.01                                Definitions.

     

    Unless
      the context requires a different meaning, capitalized terms are used in this
      Agreement as defined below.

     

    Accretion
      Directed Certificates:  As specified in the Preliminary
      Statement.

     

    Accretion
      Direction Rule:  Not applicable.

     

    Accrual
      Amount:  Not applicable.

     

    Accrual
      Certificates:  As specified in the Preliminary
      Statement.

     

    Accrual
      Termination Date:  Not applicable.

     

    Additional
      Designated Information:  As defined in Section
      11.02.

     

    Adjusted
      Mortgage Rate:  As to each Mortgage Loan and at any
      time, the per annum rate equal to the Mortgage Rate less the Servicing Fee
      Rate.

     

    Adjusted
      Net Mortgage Rate:  As to each Mortgage Loan and any
      Distribution Date, the per annum rate equal to the Mortgage Rate of that
      Mortgage Loan (as of the Due Date in the month preceding the month in which
      such
      Distribution Date occurs) less the Expense Fee Rate for that Mortgage
      Loan.

     

    Adjustment
      Date:  A date specified in each Mortgage Note as a date
      on which the Mortgage Rate on the related Mortgage Loan is subject to
      adjustment.

     

    Advance:  As
      to a Loan Group, the payment required to be made by the Servicer with respect
      to
      any Distribution Date pursuant to Section 4.01, the amount of any such payment
      being equal to the aggregate of payments of principal and interest (net of
      the
      Servicing Fee) on the Mortgage Loans in such Loan Group that were due during
      the
      related Due Period and not received as of the close of business on the related
      Determination Date, together with an amount equivalent to interest on each
      REO
      Property, net of any net income from such REO Property, less the
      aggregate amount of any such delinquent payments that the Servicer has
      determined would constitute a Nonrecoverable Advance if advanced.

     

    Advance
      Notice: As defined in Section 4.01(b).

     

    Advance
      Deficiency: As defined in Section 4.01(b).

     

    Affiliate:  With
      respect to any Person, any other Person controlling, controlled or under common
      control with such Person.  For purposes of this definition, “control”
means the power to direct the management and policies of a Person, directly
      or
      indirectly, whether through ownership of voting securities, by contract, or
      otherwise and “controlling” and “controlled” shall have meanings correlative to
      the foregoing.  Affiliates also include any entities consolidated with
      the requirements of generally accepted accounting principles.

     

    Aggregate
      Subordinated Percentage: With respect to any Distribution Date,
      the fraction, expressed as a percentage, the numerator of which is equal to
      the
      aggregate Class Certificate Balance of the Subordinated Certificates immediately
      prior to such Distribution Date and the denominator of which is the aggregate
      Stated Principal Balance of all the Mortgage Loans as of the Due Date in the
      month preceding the month of such Distribution Date (after giving effect to
      Principal Prepayments received in the Prepayment Period related to that prior
      Due Date).

     

    

    
      
        
          
          

        

        
          8

          
            

          

        

        
          
          

        

      

    

    

    Agreement:  This
      Pooling and Servicing Agreement and all amendments and supplements.

     

    Allocable
      Share:  As to any Distribution Date and Class of
      Certificates, the ratio that the amount calculated with respect to such
      Distribution Date (A) with respect to the Senior Certificates of the related
      Senior Certificate Group, pursuant to clause (i) of the definition of Class
      Optimal Interest Distribution Amount (without giving effect to any reduction
      of
      such amount pursuant to Section 4.02 (d)) and (B) with respect to the
      Subordinated Certificates, pursuant to the definition of Assumed Interest Amount
      or after the second Senior Termination Date pursuant to clause (i) of the
      definition of Class Optimal Interest Distribution Amount (without giving effect
      to any reduction of such amount pursuant to Section 4.02(d)) bears to the amount
      calculated with respect to such Distribution Date for each Class of Certificates
      pursuant to clause (i) of the definition of Class Optimal Interest Distribution
      Amount (without giving effect to any reduction of such amount pursuant to
      Section 4.02(d)) or the definition of Assumed Interest Amount for such Loan
      Group and Class, as applicable.

     

    Amount
      Available for Senior Principal:  As to any Distribution
      Date and Loan Group, the related Available Funds for such Distribution Date,
      reduced by the aggregate amount distributable (or allocable to the Accrual
      Amount, if applicable) on such Distribution Date in respect of interest on
      the
      related Senior Certificates pursuant to Section 4.02(a)(1)(i), Section
      4.02(a)(2)(i) and Section 4.02(a)(3)(i).

     

    Amount
      Held for Future Distribution:  As to any Distribution
      Date and the Mortgage Loans in a Loan Group, the aggregate amount held in the
      Certificate Account at the close of business on the related Determination Date
      on account of (i) Principal Prepayments received after the last day of the
      related Prepayment Period and Liquidation Proceeds and Subsequent Recoveries
      relating to the Mortgage Loans in such Loan Group received in the month of
      such
      Distribution Date and (ii) all Scheduled Payments relating to the Mortgage
      Loans
      in that Loan Group due after the related Due Date.

     

    Applicable
      Credit Support Percentage:  As
      defined in Section 4.02(e).

     

    Appraised
      Value:  With respect to any Mortgage Loan, the Appraised
      Value of the related Mortgaged Property shall be: (i) with respect to a Mortgage
      Loan other than a Refinance Loan, the lesser of (a) the value of the Mortgaged
      Property based upon the appraisal made at the time of the origination of such
      Mortgage Loan and (b) the sales price of the Mortgaged Property at the time
      of
      the origination of such Mortgage Loan; (ii) with respect to a Refinance Loan,
      the value of the Mortgaged Property based upon the appraisal made at the time
      of
      the origination of such Refinance Loan.

     

    Assumed
      Balance:  With respect to any Distribution Date and Loan
      Group, an amount equal to the product of the Subordinated Percentage for such
      Loan Group as of such Distribution Date and the aggregate Stated Principal
      Balance of each Mortgage Loan in such Loan Group as of the Due Date occurring
      in
      the month preceding the month of such Distribution Date (after giving effect
      to
      Principal Prepayments received in the Prepayment Period related to such prior
      Due Date).

     

    Assumed
      Interest Amount:  With respect to any Distribution Date,
      any Class of Subordinated Certificates and any Loan Group, one month’s interest
      accrued during the related Interest Accrual Period at the Pass-Through Rate
      on a
      Certificate Balance equal to that class’ pro rata share (based on their
      respective Class Certificate Balances) of the Assumed Balance for such Loan
      Group immediately prior to that Distribution Date.

     

    

    
      
        
          
          

        

        
          9

          
            

          

        

        
          
          

        

      

    

    

    Available
      Funds:  As to any Distribution Date and the Mortgage
      Loans in a Loan Group, the sum of (a) the aggregate amount held in the
      Certificate Account at the close of business on the related Determination Date,
      including any Subsequent Recoveries with respect to the Mortgage Loans in that
      Loan Group, net of the Amount Held for Future Distribution, net of Prepayment
      Charges, the $100 held in trust for each of the Class P-1 and Class P-2
      Certificates and Late Payment Fees and net of amounts permitted to be withdrawn
      from the Certificate Account pursuant to clauses (i) - (viii), inclusive, of
      Section 3.09(a) and amounts permitted to be withdrawn from the Distribution
      Account pursuant to clauses (i) - (iii), inclusive, of Section 3.09(b),
      (b) the amount of the related Advance, (c) in connection with
      Defective Mortgage Loans in such Loan Group, as applicable, the aggregate of
      the
      Purchase Prices and Substitution Adjustment Amounts deposited on the related
      Distribution Account Deposit Date, and (d) any amount deposited on the related
      Distribution Account Deposit Date pursuant to Section 3.10.  The
      Holders of the Class P Certificates will be entitled to all Prepayment Charges
      received on the Mortgage Loans and such amounts will not be available for
      distribution to the Holders of any other Class of Certificates.  The
      Holders of the Class L Certificates will be entitled to all Late Payment Fees
      assessable on the Mortgage Loans and such amounts will not be available for
      distribution to the Holders of any other Class of Certificates.

     

    Bankruptcy
      Code:  The United States Bankruptcy Reform Act of 1978,
      as amended.

     

    Bankruptcy
      Coverage Termination Date:  The point in time at which
      the Bankruptcy Loss Coverage Amount is reduced to zero.

     

    Bankruptcy
      Loss:  With respect to any Mortgage Loan, a Deficient
      Valuation or Debt Service Reduction; provided, however, that a
      Bankruptcy Loss shall not be deemed a Bankruptcy Loss under this Agreement
      so
      long as the Servicer has notified the Trustee in writing that the Servicer
      is
      diligently pursuing any remedies that may exist in connection with the related
      Mortgage Loan and either (A) the related Mortgage Loan is not in default with
      regard to payments due under the Mortgage Loan or (B) delinquent payments of
      principal and interest under the related Mortgage Loan and any related escrow
      payments in respect of such Mortgage Loan are being advanced on a current basis
      by the Servicer, in either case without giving effect to any Debt Service
      Reduction or Deficient Valuation..

     

    Bankruptcy
      Loss Coverage Amount:  As of any date of determination,
      the Bankruptcy Loss Coverage Amount shall equal the Initial Bankruptcy Loss
      Coverage Amount as reduced by (i) the aggregate amount of Bankruptcy Losses
      allocated to the Certificates since the Cut-off Date and (ii) any permissible
      reductions in the Bankruptcy Loss Coverage Amount as evidenced by a letter
      of
      each Rating Agency to the Trustee to the effect that any such reduction will
      not
      result in a downgrading, qualification or withdrawal of the then current ratings
      assigned to the Classes of Certificates rated by it.

     

    Blanket
      Mortgage:  The mortgage or mortgages encumbering a
      Cooperative Property.

     

    Book-Entry
      Certificates: As specified in the Preliminary
      Statement.

     

    Business
      Day:  Any day other than (i) a Saturday or a Sunday, or
      (ii) a day on which banking institutions in the City of New York, New York,
      the
      State of California or the city in which the Corporate Trust Office of the
      Trustee is located are authorized or obligated by law or executive order to
      be
      closed.

     

    

    
      
        
          
          

        

        
          10

          
            

          

        

        
          
          

        

      

    

    

    Calculation
      Rate:  For each Distribution Date, the
      product of (i) 10 and (ii) the weighted average pass-through rate of the
      outstanding Class A and Class B Interests, treating each of the Class A
      Interests as having an Interest Rate of 0.00%.

     

    Cap
      Counterparty:  Not applicable.

     

    Certificate:  Any
      one of the certificates issued by the Trust Fund and executed by the Trustee
      in
      substantially the forms attached as exhibits.

     

    Certificate
      Account:  The separate Eligible Account or Accounts
      created and maintained by the Servicer pursuant to Section 3.06(d) with a
      depository institution in the name of the Servicer for the benefit of the
      Trustee on behalf of Certificateholders and designated “IndyMac Bank, F.S.B., in
      trust for the registered holders of IndyMac IMSC Mortgage Loan Trust 2007-AR1,
      Mortgage Pass-Through Certificates, Series 2007-AR1.”

     

    Certificate
      Balance: With respect to any Certificate (other than the Class L
      Certificates) at any date of determination, the maximum dollar amount of
      principal to which the Holder thereof is then entitled under this Agreement,
      such amount being equal to the Denomination thereof (A) plus any increase
      in the Certificate Balance of such Certificate pursuant to Section 4.02 due
      to
      the receipt of Subsequent Recoveries on the Mortgage Loans in a Loan Group,
      (B)
minus the sum of (i) all distributions of principal previously made with
      respect thereto and (ii) all Realized Losses allocated to that Certificate
      and,
      in the case of any Subordinated Certificates, all other reductions in
      Certificate Balance previously allocated to that Certificate pursuant to Section
      4.05 and (C) in the case of any Class of Accrual Certificates, plus the
      Accrual Amount added to the Class Certificate Balance of such Class prior to
      such date.

     

    Certificate
      Group:  Any of the Group 1, Group 2 and Group 3, as the
      context requires.

     

    Certificate
      Owner:  With respect to a Book-Entry Certificate, the
      Person who is the beneficial owner of the Book-Entry Certificate.  For
      the purposes of this Agreement, in order for a Certificate Owner to enforce
      any
      of its rights under this Agreement, it shall first have to provide evidence
      of
      its beneficial ownership interest in a Certificate that is reasonably
      satisfactory to the Trustee, the Depositor and/or the Servicer, as
      applicable.

     

    Certificate
      Register:  The register maintained pursuant to Section
      5.02.

     

    Certificate
      Registrar:  Deutsche Bank National Trust Company and its
      successors and, if a successor certificate registrar is appointed under this
      Agreement, the successor.

     

    Certificateholder
      or Holder:  The person in whose name a Certificate is
      registered in the Certificate Register, except that, solely for the purpose
      of
      giving any consent pursuant to this Agreement, any Certificate registered in
      the
      name of the Depositor or any affiliate of the Depositor is not Outstanding
      and
      the Percentage Interest evidenced thereby shall not be taken into account in
      determining whether the requisite amount of Percentage Interests necessary
      to
      effect a consent has been obtained, except that if the Depositor or its
      affiliates own 100% of the Percentage Interests evidenced by a Class of
      Certificates, the Certificates shall be Outstanding for purposes of any
      provision of this Agreement requiring the consent of the Holders of Certificates
      of a particular Class as a condition to the taking of any action.  The
      Trustee is entitled to rely conclusively on a certification of the Depositor
      or
      any affiliate of the Depositor in determining which Certificates are registered
      in the name of an affiliate of the Depositor.

     

    Certification
      Party:  As defined in Section 11.05.

     

    

    
      
        
          
          

        

        
          11

          
            

          

        

        
          
          

        

      

    

    

    Certifying
      Person:  As defined in Section 11.05.

     

    Class:  All
      Certificates bearing the same class designation as set forth in the Preliminary
      Statement.

     

    Class
      A Interest: Each of the Class A-1, Class A-2 and Class A-3
      Interests.

     

    Class
      B Interest: Each of the Class B-1, Class B-2 and Class B-3
      Interests.

     

    Class
      C Interest: Each of the Class C-1, Class C-2 and Class C-3
      Interests.

     

    Class
      Certificate Balance: For any Class as of any date of
      determination, the aggregate of the Certificate Balances of all Certificates
      of
      the Class as of that date.

     

    Class
      Interest Shortfall:  As to any Distribution Date and
      Class, the amount by which the amount described in clause (i) of the definition
      of Class Optimal Interest Distribution Amount for such Class exceeds the amount
      of interest actually distributed on such Class on such Distribution Date
      pursuant to such clause (i).

     

    Class
      Optimal Interest Distribution Amount:  With respect to
      any Distribution Date and interest-bearing Class, the sum of (i) one month’s
      interest accrued during the related Interest Accrual Period at the Pass-Through
      Rate for such Class on the related Class Certificate Balance immediately prior
      to such Distribution Date, subject to reduction pursuant to Section 4.02(d),
      and
      (ii) any Class Unpaid Interest Amounts for such Class.

     

    Class
      Subordination Percentage:  With respect to any
      Distribution Date and each Class of Subordinated Certificates, the fraction
      (expressed as a percentage) the numerator of which is the Class Certificate
      Balance of such Class of Subordinated Certificates immediately prior to such
      Distribution Date and the denominator of which is the aggregate Class
      Certificate Balance of all Classes of Certificates immediately prior to such
      Distribution Date.

     

    Class
      Unpaid Interest Amounts:  As to any Distribution Date
      and Class of interest-bearing Certificates, the amount by which the aggregate
      Class Interest Shortfalls for such Class on prior Distribution Dates exceeds
      the
      amount distributed on such Class on prior Distribution Dates pursuant to clause
      (ii) of the definition of Class Optimal Interest Distribution
      Amount.

     

    Closing
      Date:  June 28, 2007.

     

    CMT
      Index:  Not applicable.

     

    Code:
      The Internal Revenue Code of 1986, including any successor or amendatory
      provisions.

     

    COFI:  Not
      applicable.

     

    COFI
      Certificates:  Not applicable.

     

    Commission:  The
      United States Securities and Exchange Commission.

     

    Compensating
      Interest: For any Distribution Date, 0.125% multiplied by
      one-twelfth multiplied by the aggregate Stated Principal Balance of the Mortgage
      Loans as of the first day of the prior month.

     

    Components:  Not
      applicable.

     

    

    
      
        
          
          

        

        
          12

          
            

          

        

        
          
          

        

      

    

    

    Co-op
      Shares:  Shares issued by a Cooperative
      Corporation.

     

    Cooperative
      Corporation: The entity that holds title (fee or an acceptable
      leasehold estate) to the real property and improvements constituting the
      Cooperative Property and that governs the Cooperative Property, which
      Cooperative Corporation must qualify as a Cooperative Housing Corporation under
      section 216 of the Code.

     

    Cooperative
      Loan: Any Mortgage Loan secured by Co-op Shares and a Proprietary
      Lease.

     

    Cooperative
      Property:  The real property and improvements owned by
      the Cooperative Corporation, including the allocation of individual dwelling
      units to the holders of the Co-op Shares of the Cooperative
      Corporation.

     

    Cooperative
      Unit:  A single family dwelling located in a Cooperative
      Property.

     

    Corporate
      Trust Office:  The designated office of the Trustee in
      the State of California at which at any particular time its corporate trust
      business with respect to this Agreement is administered, which office at the
      date of the execution of this Agreement is located at 1761 East
      St.  Andrew Place, Santa Ana, California 92705, Attn: Trust
      Administration- IN07C1 (IndyMac MBS, Inc., IndyMac IMSC Mortgage Loan Trust
      2007-AR1, Mortgage Pass-Through Certificates, Series 2007-AR1), and which is
      the
      address to which notices to and correspondence with the Trustee should be
      directed.  The office of the Certificate Registrar for purposes of
      presentment of Certificates for registration of transfer, exchange or final
      payment is located at DB Services Tennessee, 648 Grassmere Park Road, Nashville,
      Tennessee  37211-3658, Attention: Transfer Unit.

     

    Cross-over
      Situation: For any Distribution Date and for any
      Loan Group (after taking into account principal distributions on such
      Distribution Date) a Cross-Over Situation exists with respect to the Class
      A and
      Class B Interests of the Loan Group if such Interests in the aggregate are
      less
      than 1% of the Assumed Balance of the related Loan Group.

     

    Cut-off
      Date:  June 1, 2007.

     

    Cut-off
      Date Pool Principal Balance:  $696,127,517.

     

    Cut-off
      Date Principal Balance: As to any Mortgage Loan, its Stated
      Principal Balance as of the close of business on the Cut-off Date.

     

    Debt
      Service Reduction:  For any Mortgage Loan, a reduction
      by a court of competent jurisdiction in a proceeding under the Bankruptcy Code
      in the Scheduled Payment for the Mortgage Loan that became final and
      non-appealable, except a reduction resulting from a Deficient Valuation or
      a
      reduction that results in a permanent forgiveness of principal.

     

    Defective
      Mortgage Loan:  Any Mortgage Loan that is required to be
      repurchased pursuant to Section 2.02 or 2.03.

     

    Deficient
      Valuation: For any Mortgage Loan, a valuation by a court of
      competent jurisdiction of the Mortgaged Property in an amount less than the
      then
      outstanding indebtedness under the Mortgage Loan, or any reduction in the amount
      of principal to be paid in connection with any Scheduled Payment that results
      in
      a permanent forgiveness of principal, which valuation or reduction results
      from
      an order of the court that is final and non-appealable in a proceeding under
      the
      Bankruptcy Code.

     

    

    
      
        
          
          

        

        
          13

          
            

          

        

        
          
          

        

      

    

    

    Definitive
      Certificates:  Any Certificate evidenced by a Physical
      Certificate and any Certificate issued in lieu of a Book-Entry Certificate
      pursuant to Section 5.02(e).

     

    Delay
      Certificates:  As specified in the Preliminary
      Statement.

     

    Delay
      Delivery Certification: A certification substantially in the form
      of Exhibit G-2.

     

    Delay
      Delivery Mortgage Loans:  The Mortgage Loans identified
      on the Mortgage Loan Schedule for which none of a related Mortgage File, or
      neither the Mortgage Note, nor a lost note affidavit for a lost Mortgage Note,
      has been delivered to the Trustee by the Closing Date.  The Depositor
      shall deliver the Mortgage Files to the Trustee:

     

    (A)           for
      at least 70% of the Mortgage Loans in each Loan Group, not later than the
      Closing Date, and

     

    (B)           for
      the remaining 30% of the Mortgage Loans in each Loan Group, not later than
      five
      Business Days following the Closing Date.

     

    To
      the
      extent that the Seller is in possession of any Mortgage File for any Delay
      Delivery Mortgage Loan, until delivery of the Mortgage File to the Trustee
      as
      provided in Section 2.01, the Seller shall hold the files as Servicer, as agent
      and in trust for the Trustee.

     

    Deleted
      Mortgage Loan:  As defined in Section
      2.03(c).

     

    Delinquent:  A
      Mortgage Loan is “Delinquent” if any monthly payment due on a Due Date is not
      made by the close of business on the day immediately preceding the next
      scheduled Due Date for such Mortgage Loan.  A Mortgage Loan is “30
      days Delinquent” if such monthly payment has not been received by the close of
      business on the last day of the month in which such monthly payment was
      due.  The determination of whether a Mortgage Loan is “60 days
      Delinquent”, “90 days Delinquent”, etc.  shall be made in a like
      manner.

     

    Denomination:  For
      each Certificate, the amount on the face of the Certificate as the “Initial
      Certificate Balance of this Certificate” or the Percentage Interest appearing on
      the face of the Certificate.

     

    Depositor:  IndyMac
      MBS, Inc., a Delaware corporation, or its successor in interest.

     

    Depository:  The
      initial Depository shall be The Depository Trust Company, the nominee of which
      is CEDE & Co., as the registered Holder of the Book-Entry
      Certificates.  The Depository shall at all times be a “clearing
      corporation” as defined in Section 8-102(a)(5) of the UCC.

     

    Depository
      Participant:  A broker, dealer, bank, or other financial
      institution or other Person for whom from time to time a Depository effects
      book-entry transfers and pledges of securities deposited with the
      Depository.

     

    Determination
      Date:  As to any Distribution Date, the 15th day of each
      month or if that day is not a Business Day the next Business Day.

     

    Distribution
      Account:  The separate Eligible Account created and
      maintained by the Trustee pursuant to Section 3.06(e) in the name of the Trustee
      for the benefit of the Certificateholders and designated “Deutsche Bank National
      Trust Company  in trust for registered holders of IndyMac IMSC
      Mortgage Loan Trust 2007-AR1, Mortgage Pass-Through Certificates, Series
      2007-AR1.” Funds in the Distribution Account shall be held in trust for the
      Certificateholders for the uses and purposes set forth in this
      Agreement.

     

    

    
      
        
          
          

        

        
          14

          
            

          

        

        
          
          

        

      

    

    

    Distribution
      Account Deposit Date:  As to any Distribution Date,
      12:30 P.M. Pacific time on the Business Day preceding the Distribution
      Date.

     

    Distribution
      Date:  The 25th day of each calendar month, or if that
      day is not a Business Day, the next Business Day, commencing in July
      2007.

     

    Due
      Date:  For any Mortgage Loan and Distribution Date, the
      first day of the month in which such Distribution Date occurs.

     

    Due
      Period:  For any Distribution Date, the period
      commencing on the second day of the month preceding the month in which the
      Distribution Date occurs and ending on the first day of the month in which
      the
      Distribution Date occurs.

     

    EDGAR:  The
      Commission’s Electronic Data Gathering, Analysis and Retrieval
      system.

     

    Eligible
      Account: Any of

     

    (i)           an
      account or accounts maintained with a federal or state chartered depository
      institution or trust company the short-term unsecured debt obligations of which
      (or, in the case of a depository institution or trust company that is the
      principal subsidiary of a holding company, the debt obligations of either such
      holding company or the depository institution or trust company, whichever are
      rated higher) have (x) if Moody’s is a Rating Agency at the time amounts are
      held on deposit therein, the highest short-term ratings of Moody's (which shall
      be Prime-1), (y) if Fitch is a Rating Agency at the time any amounts are held
      on
      deposit therein, the highest short-term rating of Fitch (which shall be F1
      for
      funds held for less than 30 days, and F1+ for funds held for longer than 30
      days
      and less than 365 days) and (z) if S&P is a Rating Agency at the time any
      amounts are held on deposit therein, a short-term rating of at least A-2, for
      funds held no longer than 30 days, and, if funds will be held longer than 30
      days and less than 365 days, a short-term rating of at least A-1+,
      or

     

    (ii)           if
      either of Moody’s or Fitch is a Rating Agency, an account or accounts in a
      depository institution or trust company in which such accounts are insured
      by
      the FDIC (to the limits established by the FDIC) and the uninsured deposits
      in
      which accounts are otherwise secured such that, as evidenced by an Opinion
      of
      Counsel delivered to the Trustee and to each Rating Agency, the
      Certificateholders have a claim with respect to the funds in such account or
      a
      perfected first priority security interest against any collateral (which shall
      be limited to Permitted Investments) securing such funds that is superior to
      claims of any other depositors or creditors of the depository institution or
      trust company in which such account is maintained (it being understood that
      any
      account permitted by this clause (ii) shall not be an Eligible Account in
      connection with a rating provided by S&P of any Class of Certificates),
      or

     

    (iii)           a
      trust account or accounts maintained with (a) the trust department of a federal
      or state chartered depository institution or (b) a trust company, acting in
      its
      fiduciary capacity or

     

    (iv)           any
      other account acceptable to each Rating Agency.

     

    Eligible
      Accounts may bear interest, and may include, if otherwise qualified under this
      definition, accounts maintained with the Trustee.

     

    ERISA:  The
      Employee Retirement Income Security Act of 1974, as amended.

     

    

    
      
        
          
          

        

        
          15

          
            

          

        

        
          
          

        

      

    

    

    ERISA-Qualifying
      Underwriting:  A best efforts or firm commitment
      underwriting or private placement that meets the requirements of the
      Underwriter’s Exemption.

     

    ERISA-Restricted
      Certificate:  As specified in the Preliminary
      Statement.

     

    Escrow
      Account:  The Eligible Account or Accounts established
      and maintained pursuant to Section 3.07(a).

     

    Event
      of Default:  As defined in Section 7.01.

     

    Excess
      Loss:  The amount of any (i) Fraud Loss on the Mortgage
      Loans realized after the Fraud Loss Coverage Termination Date, (ii) Special
      Hazard Loss on the Mortgage Loans realized after the Special Hazard Coverage
      Termination Date or (iii) Bankruptcy Loss on the Mortgage Loans realized after
      the Bankruptcy Coverage Termination Date.

     

    Excess
      Proceeds:  For any Liquidated Mortgage Loan, the excess
      of

     

    (a)           all
      Liquidation Proceeds from the Mortgage Loan received in the calendar month
      in
      which the Mortgage Loan became a Liquidated Mortgage Loan, net of any amounts
      previously reimbursed to the Servicer as Nonrecoverable Advances with respect
      to
      the Mortgage Loan pursuant to Section 3.09(a)(iii), over

     

    (b)           the
      sum of (i) the unpaid principal balance of the Liquidated Mortgage Loan as
      of
      the Due Date in the month in which the Mortgage Loan became a Liquidated
      Mortgage Loan plus (ii) accrued interest at the Mortgage Rate from the Due
      Date
      for which interest was last paid or advanced (and not reimbursed) to
      Certificateholders up to the Due Date applicable to the Distribution Date
      following the calendar month during which the liquidation occurred.

     

    Exchange
      Act:  The Securities Exchange Act of 1934, as amended,
      and the rules and regulations promulgated thereunder.

     

    Exchange
      Act Reports:  Any reports on Form 10-D, Form 8-K and
      Form 10-K required to be filed by the Depositor with respect to the Trust Fund
      under the Exchange Act.

     

    Expense
      Fee Rate:  As to each Mortgage Loan, the sum of (a) the
      Servicing Fee Rate and (b) the Trustee Fee Rate.

     

    FDIC:  The
      Federal Deposit Insurance Corporation, or any successor thereto.

     

    FHLMC:
      The Federal Home Loan Mortgage Corporation, a corporate
      instrumentality of the United States created and existing under Title III of
      the
      Emergency Home Finance Act of 1970, as amended, or any successor
      thereto.

     

    Fitch:  Fitch,
      Inc., or any successor thereto.  If Fitch is designated as a Rating
      Agency in the Preliminary Statement, for purposes of Section 10.05(b) the
      address for notices to Fitch shall be Fitch, Inc., One State Street Plaza,
      New
      York, NY 10004, Attention: MBS Monitoring - IndyMac IMSC 2007-AR1, or any other
      address Fitch furnishes to the Depositor and the Servicer.

     

    FNMA:  The
      Federal National Mortgage Association, a federally chartered and privately
      owned
      corporation organized and existing under the Federal National Mortgage
      Association Charter Act, or any successor thereto.

     

    

    
      
        
          
          

        

        
          16

          
            

          

        

        
          
          

        

      

    

    

    Form
      10-D Disclosure Item:  With respect to any Person, any
      material litigation or governmental proceedings pending against such Person,
      or
      against any of the Trust Fund, the Depositor, the Trustee or the Servicer,
      if
      such Person has actual knowledge thereof.

     

    Form
      10-K Disclosure Item:  With respect to any Person,
      (a) Form 10-D Disclosure Item, and (b) any affiliations or
      relationships between such Person and any Item 1119 Party.

     

    Fraud
      Loan:  A Liquidated Mortgage Loan as to which a Fraud
      Loss has occurred.

     

    Fraud
      Loss Coverage Amount:  As of the Closing Date,
      $13,922,550, subject to reduction from time to time, by the amount of Fraud
      Losses allocated to the Certificates.  In addition, on each
      anniversary of the Cut-off Date, the Fraud Loss Coverage Amount will be reduced
      as follows: (a) on the first, second, third and fourth anniversaries of the
      Cut-off Date, to an amount equal to the lesser of (i) 1.00% of the then
      current Stated Principal Balance of the Mortgage Loans in the case of the first
      anniversary and 0.50% of the then-current Stated Principal Balance of the
      Mortgage Loans in the case of the second, third and fourth such anniversaries
      and (ii) the excess of the Fraud Loss Coverage Amount as of the preceding
      anniversary of the Cut-off Date over the cumulative amount of Fraud Losses
      allocated to the Certificates since such preceding anniversary; and (b) on
      the
      fifth anniversary of the Cut-off Date, to zero.

     

    Fraud
      Loss Coverage Termination Date:  The point in time at
      which the Fraud Loss Coverage Amount is reduced to zero.

     

    Fraud
      Losses:  Realized Losses on Mortgage Loans as to which a
      loss is sustained by reason of a default arising from fraud, dishonesty or
      misrepresentation in connection with the related Mortgage Loan, including a
      loss
      by reason of the denial of coverage under any related Primary Insurance Policy
      because of such fraud, dishonesty or misrepresentation.

     

    Grantor
      Trust:  As specified in the Preliminary
      Statement.

     

    Gross
      Margin:  With respect to each Mortgage Loan, the fixed
      percentage set forth in the related Mortgage Note that is added to the Mortgage
      Index on each Adjustment Date in accordance with the terms of the related
      Mortgage Note used to determine the Mortgage Rate for such Mortgage
      Loan.

     

    Group
      1 Certificates:  As specified in the Preliminary
      Statement.

     

    Group
      1 Mortgage Loan:  Any Mortgage Loan in Loan Group
      1.

     

    Group
      1 Senior Certificates:  As specified in the Preliminary
      Statement.

     

    Group
      2 Certificates:  As specified in the Preliminary
      Statement.

     

    Group
      2 Mortgage Loan:  Any Mortgage Loan in Loan Group
      2.

     

    Group
      2 Senior Certificates:  As specified in the Preliminary
      Statement.

     

    Group
      3 Certificates:  As specified in the Preliminary
      Statement.

     

    Group
      3 Mortgage Loan:  Any Mortgage Loan in Loan Group
      3.

     

    Group
      3 Senior Certificates:  As specified in the Preliminary
      Statement.

     

    

    
      
        
          
          

        

        
          17

          
            

          

        

        
          
          

        

      

    

    

    Hard
      Prepayment Charges:  As to a Mortgage Loan, any charge
      payable by a Mortgagor in connection with certain partial Principal Prepayments
      and all Principal Prepayments in Full made within the related Prepayment Charge
      Period, the Hard Prepayment Charges with respect to each applicable Mortgage
      Loan so held by the Trust Fund being identified in the Mortgage Loan
      Schedule.

     

    Hedged
      Certificates:  Not applicable.

     

    Index:  Not
      applicable.

     

    Indirect
      Participant: A broker, dealer, bank, or other financial
      institution or other Person that clears through or maintains a custodial
      relationship with a Depository Participant.

     

    Initial
      Bankruptcy Loss Coverage
      Amount:  $310,337.

     

    Initial
      LIBOR Rate:  Not applicable.

     

    Insurance
      Policy:  For any Mortgage Loan included in the Trust
      Fund, any insurance policy, including all riders and endorsements thereto in
      effect, including any replacement policy or policies for any Insurance
      Policies.

     

    Insurance
      Proceeds:  Proceeds paid by an insurer pursuant to any
      Insurance Policy, in each case other than any amount included in such Insurance
      Proceeds in respect of Insured Expenses.

     

    Insured
      Expenses:  Expenses covered by an Insurance Policy or
      any other insurance policy with respect to the Mortgage Loans.

     

    Interest
      Accrual Period:  With respect to each Class of Delay
      Certificates and any Distribution Date, the calendar month prior to the month
      of
      such Distribution Date.  All Classes of Certificates will accrue
      interest on the basis of a 360-day year consisting of twelve 30-day
      months.

     

    Interest
      Determination Date:  With respect to (a) any Interest
      Accrual Period for any LIBOR Certificates and (b) any Interest Accrual Period
      for the COFI Certificates for which the applicable Index is LIBOR, the second
      Business Day prior to the first day of such Interest Accrual
      Period.

     

    Interest
      Rate:  With respect to each REMIC 1 Interest, the
      applicable rate set forth or calculated in the manner described in the
      Preliminary Statement.

     

    Interest
      Settlement Rate:  As defined in Section
      4.08.

     

    Item
      1119 Party:  The Depositor, the Seller, the Servicer,
      the Trustee, the Cap Counterparty and any other material transaction party,
      as
      identified in Exhibit T hereto, as updated pursuant to Section
      11.04.

     

    Late
      Payment Fee:  As to a Mortgage Loan, any fees assessable
      by the related mortgagee in connection with the late payment of a Scheduled
      Payment due after the Cut-off Date.

     

    Latest
      Possible Maturity Date:  The Distribution Date,
      calculated on the Closing Date, following the third anniversary of the later
      of
      (i) the scheduled maturity date of the Mortgage Loan having the latest scheduled
      maturity date as of the Cut-off Date, and (ii) the latest possible maturity
      of
      any Substitute Mortgage Loan that may be substituted for any Mortgage Loan
      pursuant to this Agreement.

     

    

    
      
        
          
          

        

        
          18

          
            

          

        

        
          
          

        

      

    

    

    Lender
      PMI Loans:  Mortgage Loans with respect to which the
      lender rather than the borrower acquired the primary mortgage guaranty insurance
      and charged the related borrower an interest premium.

     

    LIBOR:  The
      London interbank offered rate for one month United States dollar deposits
      calculated in the manner described in Section 4.08.

     

    LIBOR
      Determination Date: For any Interest Accrual Period, the second
      London Business Day prior to the commencement of such Interest Accrual
      Period.

     

    Limited
      Exchange Act Reporting Obligations:  The obligations of
      the Servicer under Section 3.17(b), Section 6.02 and Section 6.04 with respect
      to notice and information to be provided to the Depositor and Article 11 (except
      Section 11.07(a)(i) and (ii)).

     

    Liquidated
      Mortgage Loan:  For any Distribution Date, a defaulted
      Mortgage Loan (including any REO Property) that was liquidated in the calendar
      month preceding the month of the Distribution Date and as to which the Servicer
      has certified (in accordance with this Agreement) that it has received all
      amounts it expects to receive in connection with the liquidation of the Mortgage
      Loan, including the final disposition of an REO Property.

     

    Liquidation
      Proceeds:  Amounts, including Insurance Proceeds
      regardless of when received, received in connection with the partial or complete
      liquidation of defaulted Mortgage Loans, whether through trustee’s sale,
      foreclosure sale, or otherwise or amounts received in connection with any
      condemnation or partial release of a Mortgaged Property, and any other proceeds
      received in connection with an REO Property, less the sum of related
      unreimbursed Servicing Fees, Servicing Advances, and Advances.

     

    Loan
      Group:  Any of Loan Group 1, Loan Group 2 or Loan Group
      3, as applicable.

     

    Loan
      Group 1:  All Mortgage Loans identified as Group 1
      Mortgage Loans on the Mortgage Loan Schedule.

     

    Loan
      Group 2:  All Mortgage Loans identified as Group 2
      Mortgage Loans on the Mortgage Loan Schedule.

     

    Loan
      Group 3:  All Mortgage Loans identified as Group 3
      Mortgage Loans on the Mortgage Loan Schedule.

     

    Loan-to-Value
      Ratio:  For any Mortgage Loan and as of any date of
      determination, is the fraction whose numerator is the original principal balance
      of the related Mortgage Loan at that date of determination and whose denominator
      is the Appraised Value of the related Mortgaged Property.

     

    London
      Business Day:  Any day on which dealings in deposits of
      United States dollars are transacted in the London interbank
      market.

     

    Lost
      Mortgage Note:  Any Mortgage Note the original of which
      was permanently lost or destroyed and has not been replaced.

     

    Maintenance:  For
      any Cooperative Unit, the rent paid by the Mortgagor to the Cooperative
      Corporation pursuant to the Proprietary Lease.

     

    

    
      
        
          
          

        

        
          19

          
            

          

        

        
          
          

        

      

    

    

    Maximum
      Mortgage Rate:  For each Mortgage Loan, the percentage
      set forth in the related Mortgage Note as the lifetime maximum Mortgage Rate
      to
      which such Mortgage Rate may be adjusted.

     

    MERS:  Mortgage
      Electronic Registration Systems, Inc., a corporation organized and existing
      under the laws of the State of Delaware, or any successor thereto.

     

    MERS
      Mortgage Loan:  Any Mortgage Loan registered with MERS
      on the MERS® System.

     

    MERS®
      System:  The system of recording transfers of mortgages
      electronically maintained by MERS.

     

    MIN:  The
      mortgage identification number for any MERS Mortgage Loan.

     

    Minimum
      Mortgage Rate:  For each Mortgage Loan, the percentage
      set forth in the related Mortgage Note as the lifetime minimum Mortgage Rate
      to
      which such Mortgage Rate may be adjusted.

     

    MOM
      Loan:  Any Mortgage Loan as to which MERS is acting as
      mortgagee, solely as nominee for the originator of such Mortgage Loan and its
      successors and assigns.

     

    Monthly
      Statement:  The statement delivered to the
      Certificateholders pursuant to Section 4.06.

     

    Moody’s:  Moody’s
      Investors Service, Inc., or any successor thereto.  If Moody’s is
      designated as a Rating Agency in the Preliminary Statement, for purposes of
      Section 10.05(b) the address for notices to Moody’s shall be Moody’s Investors
      Service, Inc., 99 Church Street, New York, New York 10007, Attention:
      Residential Loan Monitoring Group, or any other address that Moody’s furnishes
      to the Depositor and the Servicer.

     

    Mortgage:  The
      mortgage, deed of trust, or other instrument creating a first lien on an estate
      in fee simple or leasehold interest in real property securing a Mortgage
      Note.

     

    Mortgage
      File:  The mortgage documents listed in Section 2.01
      pertaining to a particular Mortgage Loan and any additional documents delivered
      to the Trustee to be added to the Mortgage File pursuant to this
      Agreement.

     

    Mortgage
      Index:  One-Year CMT Index, One-Year LIBOR Index or
      Six-Month LIBOR Index.

     

    Mortgage
      Loans:  Such of the mortgage loans transferred and
      assigned to the Trustee pursuant to this Agreement, as from time to time are
      held as a part of the Trust Fund (including any REO Property), the Mortgage
      Loans so held being identified on the Mortgage Loan Schedule, notwithstanding
      foreclosure or other acquisition of title of the related Mortgaged
      Property.

     

    Mortgage
      Loan Schedule:  As of any date, the list set forth in
      Schedule I of Mortgage Loans included in the Trust Fund on that
      date.  The Mortgage Loan Schedule shall be prepared by the Seller and
      shall set forth the following information with respect to each Mortgage Loan
      by
      Loan Group:

     

    
      	
               

            	
              (i)

            	
              the
                loan number;

            

    

     

    
      	
               

            	
              (ii)

            	
              the
                street address of the Mortgaged Property, including the zip
                code;

            

    

     

    
      	
               

            	
              (iii)

            	
              the
                maturity date;

            

    

     

    
      	
               

            	
              (iv)

            	
              the
                original principal balance;

            

    

     

    

    
      
        
          
          

        

        
          20

          
            

          

        

        
          
          

        

      

    

    

    
      	
               

            	
              (v)

            	
              the
                Cut-off Date Principal Balance;

            

    

     

    
      	
               

            	
              (vi)

            	
              the
                first payment date of the Mortgage
                Loan;

            

    

     

    
      	
               

            	
              (vii)

            	
              the
                Scheduled Payment in effect as of the Cut-off
                Date;

            

    

     

    
      	
               

            	
              (viii)

            	
              the
                Gross Margin in effect as of the Cut-off
                Date;

            

    

     

    
      	
               

            	
              (ix)

            	
              the
                Maximum Mortgage Rate in effect as of the Cut-off
                Date;

            

    

     

    
      	
               

            	
              (x)

            	
              the
                Adjustment Date in effect as of the Cut-off
                Date;

            

    

     

    
      	
               

            	
              (xi)

            	
              a
                code indicating the Mortgage Index and when it is
                determined;

            

    

     

    
      	
               

            	
              (xii)

            	
              the
                Loan-to-Value Ratio at origination;

            

    

     

    
      	
               

            	
              (xiii)

            	
              a
                code indicating whether the residential dwelling at the time of
                origination was represented to be
                owner-occupied;

            

    

     

    
      	
               

            	
              (xiv)

            	
              a
                code indicating whether the residential dwelling is either (a) a
                detached
                single family dwelling, (b) a dwelling in a PUD, (c) a condominium
                unit,
                (d) a two- to four-unit residential property, or (e) a Cooperative
                Unit;

            

    

     

    
      	
               

            	
              (xv)

            	
              the
                Mortgage Rate in effect as of the Cut-off
                Date;

            

    

     

    
      	
               

            	
              (xvi)

            	
              the
                purpose for the Mortgage Loan;

            

    

    

    
      	 	 (xvii)	the
              type of documentation program pursuant to which the Mortgage Loan was
              originated;

    

    

    
      	 	 (xviii)	a
              code indicating whether the Mortgage Loan is a borrower-paid mortgage
              insurance loan;

    

     

    
      	
               

            	
              (xix)

            	
              the
                Servicing Fee Rate;

            

    

     

    
      	
               

            	
              (xx)

            	
              a
                code indicating whether the Mortgage Loan is a Lender PMI
                Loan;

            

    

     

    
      	
               

            	
              (xxi)

            	
              the
                coverage amount of any mortgage
                insurance;

            

    

    

    
      	 	(xxii)	with
              respect to the Lender PMI Loans, the interest premium charged by the
              lender;

    

    

    
      	 	(xxiii)	a
              code indicating whether the Mortgage Loan is a Delay Delivery Mortgage
              Loan;

    

    

    
      	 	(xxiv)	the
              Minimum Mortgage Rate in effect as of the Cut-off
              Date;

    

    

    
      	 	(xxv)	a
              code indicating whether the Mortgage Loan is a MERS Mortgage Loan;
              and

    

    

    
      	 	(xxvi)	the
              type of Prepayment Charges and Prepayment Charge
              Period.

    

    

    
      
        
          
          

        

        
          21

          
            

          

        

        
          
          

        

      

    

    

    The
      schedule shall also set forth the total of the amounts described under (v)
      above
      for all of the Mortgage Loans and for each Loan Group.

     

    Mortgage
      Note:  The original executed note or other evidence of
      the indebtedness of a Mortgagor under a Mortgage Loan.

     

    Mortgage
      Rate:  The annual rate of interest borne by a Mortgage
      Note from time to time (net of the interest premium for any Lender PMI
      Loan).

     

    Mortgaged
      Property:  The underlying property securing a Mortgage
      Loan, which, with respect to a Cooperative Loan, is the related Co-op Shares
      and
      Proprietary Lease.

     

    Mortgagor:  The
      obligors on a Mortgage Note.

     

    National
      Cost of Funds Index:  The National Monthly Median Cost
      of Funds Ratio to SAIF-Insured Institutions published by the OTS.

     

    Net
      Prepayment Interest Shortfall:  As to any Distribution
      Date and Loan Group, the amount by which the aggregate of the Prepayment
      Interest Shortfalls for such Loan Group and such Distribution Date exceeds
      an
      amount equal to the sum of (a) the Compensating Interest allocable to such
      Loan
      Group for such Distribution Date and (b) the excess, if any, of the Compensating
      Interest allocable to the other Loan Groups for such Distribution Date over
      the
      Prepayment Interest Shortfalls for such other Loan Groups and Distribution
      Date.

     

    Non-Delay
      Certificates:  As specified in the Preliminary
      Statement.

     

    Nonrecoverable
      Advance:  Any portion of an Advance previously made or
      proposed to be made by the Servicer, that, in the good faith judgment of the
      Servicer, will not be ultimately recoverable by the Servicer from the related
      Mortgagor, related Liquidation Proceeds or otherwise.

     

    Notice
      of Final Distribution:  The notice to be provided
      pursuant to Section 9.02 to the effect that final distribution on any of the
      Certificates shall be made only upon presentation and surrender
      thereof.

     

    Notional
      Amount:  Not applicable.

     

    Notional
      Amount Certificates:  As specified in the Preliminary
      Statement.

     

    Notional
      Amount Components:  As specified in the Preliminary
      Statement.

     

    Offered
      Certificates:  As specified in the Preliminary
      Statement.

     

    Officer’s
      Certificate:  A certificate (i) signed by the Chairman
      of the Board, the Vice Chairman of the Board, the President, a Managing
      Director, a Vice President (however denominated), an Assistant Vice President,
      the Treasurer, the Secretary, or one of the Assistant Treasurers or Assistant
      Secretaries of the Depositor or the Servicer, or (ii) if provided for in this
      Agreement, signed by a Servicing Officer, as the case may be, and delivered
      to
      the Depositor and the Trustee as required by this Agreement or (iii) in the
      case
      of any other Person, signed by an authorized officer of such
      Person.

     

    

    
      
        
          
          

        

        
          22

          
            

          

        

        
          
          

        

      

    

    

    One-Year
      CMT Index:  The weekly average yield on United States
      Treasury securities adjusted to a constant maturity of one year as published
      by
      the Federal Reserve Board in Statistical Release H.15 and most recently
      available as of a day specified in the related Mortgage Note.

     

    One-Year
      LIBOR Index:  The average of the London interbank
      offered rates for one-year U.S. dollar deposits in the London market, generally
      as set forth in either The Wall Street Journal or some other source generally
      accepted in the residential mortgage loan origination business and specified
      in
      the related Mortgage Note, or, if such rate ceases to be published in The Wall
      Street Journal or becomes unavailable for any reason, then based upon a new
      index selected by the servicer, based on comparable information, in each case,
      as most recently announced as of either 45 days prior to, or the first Business
      Day of the month immediately preceding the month of, such Adjustment
      Date.

     

    Opinion
      of Counsel:  For the interpretation or application of
      the REMIC Provisions, a written opinion of counsel who (i) is in fact
      independent of the Depositor and the Servicer, (ii) does not have any direct
      financial interest in the Depositor or the Servicer or in any affiliate of
      either, and (iii) is not connected with the Depositor or the Servicer as an
      officer, employee, promoter, underwriter, trustee, partner, director, or person
      performing similar functions.  Otherwise, a written opinion of counsel
      who may be counsel for the Depositor or the Servicer, including in-house
      counsel, reasonably acceptable to the Trustee.

     

    Optional
      Termination Date:  As defined in Section
      9.01.

     

    Original
      Applicable Credit Support Percentage:  With respect to
      each of the following Classes of Subordinated Certificates, the corresponding
      percentage described below:

     

    
      	
              Class B-1

            	
              9.75%

            
	
              Class B-2

            	
              6.05%

            
	
              Class B-3

            	
              4.00%

            
	
              Class B-4

            	
              2.90%

            
	
              Class B-5

            	
              1.65%

            
	
              Class B-6

            	
              0.75%

            

    

     

    Original
      Mortgage Loan:  The Mortgage Loan refinanced in
      connection with the origination of a Refinance Loan.

     

    Original
      Subordinated Principal Balance:  On or prior to the
      second Senior Termination Date, the Subordinated Percentage of the aggregate
      Stated Principal Balance of the Mortgage Loans in the related Loan Group, in
      each case as of the Cut-off Date; or if such date is after the second Senior
      Termination Date, the aggregate Class Certificate Balance of the Subordinated
      Certificates as of the Closing Date.

     

    OTS:  The
      Office of Thrift Supervision.

     

    Outside
      Reference Date:  Not applicable.

     

    Outstanding:
      For the Certificates as of any date of determination, all Certificates
      theretofore executed and authenticated under this Agreement except:

     

    
      	
               

            	
              (i)

            	
              Certificates
                theretofore canceled by the Trustee or delivered to the Trustee for
                cancellation; and

            

    

     

    

    
      
        
          
          

        

        
          23

          
            

          

        

        
          
          

        

      

    

    

    
      	
               

            	
              (ii)

            	
              Certificates
                in exchange for which or in lieu of which other Certificates have
                been
                executed and delivered by the Trustee pursuant to this
                Agreement.

            

    

     

    Outstanding
      Mortgage Loan:  As of any Due Date, a Mortgage Loan with
      a Stated Principal Balance greater than zero that was not the subject of a
      Principal Prepayment in Full before the Due Date or during the related
      Prepayment Period and that did not become a Liquidated Mortgage Loan before
      the
      Due Date.

     

    Overcollateralized
      Group:  As defined in Section 4.03.

     

    Ownership
      Interest: As to any Residual Certificate, any ownership interest
      in the Certificate including any interest in the Certificate as its Holder
      and
      any other interest therein, whether direct or indirect, legal or
      beneficial.

     

    Pass-Through
      Rate:  For each Class of Certificates, the per annum
      rate set forth or calculated in the manner described in the Preliminary
      Statement.

     

    Percentage
      Interest:  As to any Certificate, the percentage
      interest evidenced thereby in distributions required to be made on the related
      Class, the percentage interest being set forth on its face or equal to the
      percentage obtained by dividing the Denomination of the Certificate by the
      aggregate of the Denominations of all Certificates of the same
      Class.

     

    Performance
      Certification:  As defined in Section
      11.05.

     

    Permitted
      Investments:  At any time, any of the
      following:

     

    (i)           obligations
      of the United States or any agency thereof backed by the full faith and credit
      of the United States;

     

    (ii)           general
      obligations of or obligations guaranteed by any state of the United States
      or
      the District of Columbia receiving the highest long-term debt rating of each
      Rating Agency, or any lower rating that will not result in the downgrading,
      qualification or withdrawal of the ratings then assigned to the Certificates
      by
      the Rating Agencies, as evidenced by a signed writing delivered by each Rating
      Agency;

     

    (iii)           commercial
      or finance company paper that is then receiving the highest commercial or
      finance company paper rating of each Rating Agency, or any lower rating that
      will not result in the downgrading, qualification or withdrawal of the ratings
      then assigned to the Certificates by the Rating Agencies , as evidenced by
      a
      signed writing delivered by each Rating Agency;

     

    (iv)           certificates
      of deposit, demand or time deposits, or bankers’ acceptances issued by any
      depository institution or trust company incorporated under the laws of the
      United States or of any state thereof and subject to supervision and examination
      by federal or state banking authorities, provided that the commercial paper
      or
      long-term unsecured debt obligations of the depository institution or trust
      company (or in the case of the principal depository institution in a holding
      company system, the commercial paper or long-term unsecured debt obligations
      of
      the holding company, but only if Moody’s is not a Rating Agency) are then rated
      one of the two highest long-term and the highest short-term ratings of each
      Rating Agency for the securities, or any lower rating that will not result
      in
      the downgrading, qualification or withdrawal of the ratings then assigned to
      the
      Certificates by the Rating Agencies, as evidenced by a signed writing delivered
      by each Rating Agency;

     

    

    
      
        
          
          

        

        
          24

          
            

          

        

        
          
          

        

      

    

    

    (v)           demand
      or time deposits or certificates of deposit issued by any bank or trust company
      or savings institution to the extent that the deposits are fully insured by
      the
      FDIC;

     

    (vi)           guaranteed
      reinvestment agreements issued by any bank, insurance company, or other
      corporation acceptable to the Rating Agencies at the time of the issuance of
      the
      agreements, as evidenced by a signed writing delivered by each Rating
      Agency;

     

    (vii)           repurchase
      obligations with respect to any security described in clauses (i) and (ii)
      above, in either case entered into with a depository institution or trust
      company (acting as principal) described in clause (iv) above; provided that
      such
      repurchase obligation would be accounted for as a financing arrangement under
      generally accepted accounting principles;

     

    (viii)           securities
      (other than stripped bonds, stripped coupons, or instruments sold at a purchase
      price in excess of 115% of their face amount) bearing interest or sold at a
      discount issued by any corporation incorporated under the laws of the United
      States or any state thereof that, at the time of the investment, have one of
      the
      two highest ratings of each Rating Agency (except if the Rating Agency is
      Moody’s the rating shall be the highest commercial paper rating of Moody’s for
      the securities), or any lower rating that will not result in the downgrading,
      qualification or withdrawal of the ratings then assigned to the Certificates
      by
      the Rating Agencies, as evidenced by a signed writing delivered by each Rating
      Agency and that have a maturity date occurring no more than 365 days from their
      date of issuance;

     

    (ix)           units
      of a taxable money-market portfolio having the highest rating assigned by each
      Rating Agency (except (i) if Fitch is a Rating Agency and has not rated the
      portfolio, the highest rating assigned by Moody’s and (ii) if S&P is a
      Rating Agency, “AAAm” or “AAAM-G” by S&P) and restricted to obligations
      issued or guaranteed by the United States of America or entities whose
      obligations are backed by the full faith and credit of the United States of
      America and repurchase agreements collateralized by such obligations;
      and

     

    (x)           any
      other investments bearing interest or sold at a discount acceptable to each
      Rating Agency that will not result in the downgrading, qualification or
      withdrawal of the ratings then assigned to the Certificates by the Rating
      Agencies, as evidenced by a signed writing delivered by each Rating
      Agency.

     

    No
      Permitted Investment may (i) evidence the right to receive interest only
      payments with respect to the obligations underlying the instrument, (ii) be
      sold
      or disposed of before its maturity or (iii) be any obligation of the Seller
      or
      any of its Affiliates.  Any Permitted Investment shall be relatively
      risk free and no options or voting rights shall be exercised with respect to
      any
      Permitted Investment.  Any Permitted Investment shall be sold or
      disposed of in accordance with Financial Accounting Standard 140, paragraph
      35c(6) in effect as of the Closing Date.

     

    Permitted
      Transferee:  Any person other than

     

    (i)           the
      United States, any State or political subdivision thereof, or any agency or
      instrumentality of any of the foregoing,

     

    (ii)           a
      foreign government, International Organization, or any agency or instrumentality
      of either of the foregoing,

     

    (iii)           an
      organization (except certain farmers’ cooperatives described in section 521 of
      the Code) that is exempt from tax imposed by Chapter 1 of the Code (including
      the tax imposed by section 511 of the Code on unrelated business taxable income)
      on any excess inclusions (as defined in section 860E(c)(1) of the Code) with
      respect to any Residual Certificate,

     

    

    
      
        
          
          

        

        
          25

          
            

          

        

        
          
          

        

      

    

    

    (iv)           a
      rural electric and telephone cooperatives described in section 1381(a)(2)(C)
      of
      the Code,

     

    (v)           an
      “electing large partnership” as defined in section 775 of the Code,

     

    (vi)           a
      Person that is not a U.S. Person, and

     

    (vii)           any
      other Person so designated by the Depositor based on an Opinion of Counsel
      that
      the Transfer of an Ownership Interest in a Residual Certificate to the Person
      may cause any REMIC to fail to qualify as a REMIC at any time that the
      Certificates are outstanding.

     

    Person:
      Any individual, corporation, partnership, joint venture,
      association, limited liability company, joint-stock company, trust,
      unincorporated organization, or government, or any agency or political
      subdivision thereof.

     

    Physical
      Certificates:  As specified in the Preliminary
      Statement.

     

    Planned
      Balance:  Not applicable.

     

    Planned
      Principal Classes:  As specified in the Preliminary
      Statement.

     

    Pool
      Stated Principal Balance:  The aggregate Stated
      Principal Balance of the Mortgage Loans.

     

    Prepayment
      Charge:  As to any Mortgage Loan, a Hard Prepayment
      Charge or Soft Prepayment Charge, as set forth in the Mortgage Loan
      Schedule.

     

    Prepayment
      Charge Period:  As to any Mortgage Loan, the period of
      time during which a Prepayment Charge may be imposed.

     

    Prepayment
      Interest Excess:  As to any Principal Prepayment
      received by the Servicer on a Mortgage Loan from the first day through the
      fifteenth day of any calendar month other than the  month of the
      Cut-off Date, all amounts paid by the related Mortgagor in respect of interest
      on such Principal Prepayment.  All Prepayment Interest Excess shall be
      retained by the Servicer as additional servicing compensation.

     

    Prepayment
      Interest Shortfall:  As to any Distribution Date,
      Mortgage Loan and Principal Prepayment received on or after the sixteenth day
      of
      the month preceding the month of such Distribution Date (or, in the case of
      the
      first Distribution Date, on or after the Cut-off Date) and on or before the
      last
      day of the month preceding the month of such Distribution Date, the amount,
      if
      any, by which one month’s interest at the related Mortgage Rate, net of the
      Servicing Fee Rate, on such Principal Prepayment exceeds the amount of interest
      paid in connection with such Principal Prepayment.

     

    Prepayment
      Period: As to any Distribution Date and related Due Date, the
      period from and including the 16th day of the month immediately prior to the
      month of such Distribution Date (or, in the case of the first Distribution
      Date,
      from the Cut-off Date) and to and including the 15th day of the month of such
      Distribution Date.

     

    Prepayment
      Shift Percentage:  Not applicable.

     

    

    
      
        
          
          

        

        
          26

          
            

          

        

        
          
          

        

      

    

    

    Primary
      Insurance Policy:  Each policy of primary mortgage
      guaranty insurance or any replacement policy therefor with respect to any
      Mortgage Loan.

     

    Principal
      Amount:  As to any Distribution Date and each Loan
      Group, the sum of (a) all monthly payments of principal due on each Mortgage
      Loan in that Loan Group on the related Due Date, (b) the principal portion
      of
      the Purchase Price of each Mortgage Loan in that Loan Group that was repurchased
      by the Seller pursuant to this Agreement as of such Distribution Date, excluding
      any Mortgage Loan that was purchased by the Servicer as provided in Section
      3.12, (c) the Substitution Adjustment Amount in connection with any Deleted
      Mortgage Loan in that Loan Group received with respect to such Distribution
      Date, (d) any Insurance Proceeds or Liquidation Proceeds allocable to recoveries
      of principal of Mortgage Loans in that Loan Group that are not yet Liquidated
      Mortgage Loans received during the calendar month preceding the month of such
      Distribution Date, (e) with respect to each Mortgage Loan in that Loan Group
      that became a Liquidated Mortgage Loan during the calendar month preceding
      the
      month of such Distribution Date, the amount of Liquidation Proceeds allocable
      to
      principal received with respect to such Mortgage Loan, (f) all partial and
      full
      Principal Prepayments on the Mortgage Loans in that Loan Group received during
      the related Prepayment Period, and (g) any Subsequent Recoveries with respect
      to
      the Mortgage Loans in that Loan Group received during the calendar month
      preceding the month of such Distribution Date.

     

    Principal
      Only Certificates:  As specified in the Preliminary
      Statement.

     

    Principal
      Prepayment:  Any payment of principal by a Mortgagor on
      a Mortgage Loan (including the principal portion of the Purchase Price of any
      Mortgage Loan purchased by the Servicer pursuant to Section 3.12) that is
      received in advance of its scheduled Due Date and is not accompanied by an
      amount representing scheduled interest due on any date in any month after the
      month of prepayment.  The Servicer shall apply partial Principal
      Prepayments in accordance with the related Mortgage Note.

     

    Principal
      Prepayment in Full:  Any Principal Prepayment made by a
      Mortgagor of the entire principal balance of a Mortgage Loan.

     

    Principal
      Relocation Payment:  A payment from any Loan Group to
      REMIC 1 Interests other than those of their corresponding Loan Group as provided
      in the Preliminary Statement.  Principal Relocation Payments shall be
      made of principal allocations comprising the Principal Amount from a Loan
      Group.

     

    Private
      Certificates:  As specified in the Preliminary
      Statement.

     

    Pro
      Rata Share:  As to any Distribution Date and any Class
      of Subordinated Certificates, the portion of the Subordinated Principal
      Distribution Amount allocable to such Class, equal to the product of the
      Subordinated Principal Distribution Amount on such Distribution Date and a
      fraction, the numerator of which is the related Class Certificate Balance
      thereof and the denominator of which is the aggregate Class Certificate Balance
      of the Subordinated Certificates, in each case immediately prior to such
      Distribution Date.

     

    Proprietary
      Lease:  For any Cooperative Unit, a lease or occupancy
      agreement between a Cooperative Corporation and a holder of related Co-op
      Shares.

     

    Prospectus
      Supplement:  The Prospectus Supplement dated June 28,
      2007, relating to the Offered Certificates, and any supplement to the Prospectus
      Supplement.

     

    PUD:  Planned
      Unit Development.

     

    

    
      
        
          
          

        

        
          27

          
            

          

        

        
          
          

        

      

    

    

    Purchase
      Price:  For any Mortgage Loan required to be purchased
      by the Seller pursuant to Section 2.02 or 2.03 or purchased by the Servicer
      pursuant to Section 3.12, the sum of

     

    (i)           100%
      of the unpaid principal balance of the Mortgage Loan on the date of the
      purchase,

     

    (ii)           accrued
      and unpaid interest on the Mortgage Loan at the applicable Mortgage Rate (or
      at
      the applicable Adjusted Mortgage Rate if (x) the purchaser is the Servicer
      or
      (y) if the purchaser is the Seller and the Seller is the Servicer) from the
      date
      through which interest was last paid by the Mortgagor to the Due Date in the
      month in which the Purchase Price is to be distributed to Certificateholders,
      net of any unreimbursed Advances made by the Servicer on the Mortgage Loan,
      and

     

    (iii)           any
      costs and damages incurred by the Trust Fund in connection with any violation
      by
      the Mortgage Loan of any predatory or abusive lending law.

     

    If
      the
      Mortgage Loan is purchased pursuant to Section 3.12, the interest component
      of
      the Purchase Price shall be computed (i) on the basis of the applicable Adjusted
      Mortgage Rate before giving effect to the related modification and (ii) from
      the
      date to which interest was last paid to the date on which the Mortgage Loan
      is
      assigned to the Servicer pursuant to Section 3.12.

     

    Qualified
      Insurer:  A mortgage guaranty insurance company duly
      qualified as such under the laws of the state of its principal place of business
      and each state having jurisdiction over the insurer in connection with the
      insurance policy issued by the insurer, duly authorized and licensed in such
      states to transact a mortgage guaranty insurance business in such states and
      to
      write the insurance provided by the insurance policy issued by it, approved
      as a
      FNMA- or FHLMC-approved mortgage insurer or having a claims paying ability
      rating of at least “AA” or equivalent rating by a nationally recognized
      statistical rating organization.  Any replacement insurer with respect
      to a Mortgage Loan must have at least as high a claims paying ability rating
      as
      the insurer it replaces had on the Closing Date.

     

    Rating
      Agency:  Each of the Rating Agencies specified in the
      Preliminary Statement.  If any of them or a successor is no longer in
      existence, “Rating Agency” shall be the nationally recognized statistical rating
      organization, or other comparable Person, identified as a “Rating Agency” under
      the Underwriter’s Exemption, and designated by the Depositor, notice of which
      designation shall be given to the Trustee.  References to a given
      rating or rating category of a Rating Agency means the rating category without
      giving effect to any modifiers.

     

    Realized
      Loss:  With respect to each Liquidated Mortgage Loan, an
      amount (not less than zero or more than the Stated Principal Balance of the
      Mortgage Loan) as of the date of such liquidation, equal to (i) the Stated
      Principal Balance of the Liquidated Mortgage Loan as of the date of such
      liquidation, plus (ii) interest at the Adjusted Net Mortgage Rate from
      the Due Date as to which interest was last paid or advanced (and not reimbursed)
      to Certificateholders up to the Due Date in the month in which Liquidation
      Proceeds are required to be distributed on the Stated Principal Balance of
      such
      Liquidated Mortgage Loan from time to time, minus (iii) the Liquidation
      Proceeds, if any, received during the month in which such liquidation occurred,
      to the extent applied as recoveries of interest at the Adjusted Net Mortgage
      Rate and to principal of the Liquidated Mortgage Loan.  With respect
      to each Mortgage Loan which has become the subject of a Deficient Valuation,
      if
      the principal amount due under the related Mortgage Note has been reduced,
      the
      difference between the principal balance of the Mortgage Loan outstanding
      immediately prior to such Deficient Valuation and the principal balance of
      the
      Mortgage Loan as reduced by the Deficient Valuation.  With respect to
      each Mortgage Loan that has become the subject of a Debt Service Reduction
      and
      any Distribution Date, the amount, if any, by which the principal portion of
      the
      related Scheduled Payment has been reduced.

     

    

    
      
        
          
          

        

        
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    To
      the
      extent the Servicer receives Subsequent Recoveries with respect to any Mortgage
      Loan, the amount of the Realized Loss with respect to that Mortgage Loan will
      be
      reduced by such Subsequent Recoveries.

     

    Recognition
      Agreement:  For any Cooperative Loan, an agreement
      between the Cooperative Corporation and the originator of the Mortgage Loan
      that
      establishes the rights of the originator in the Cooperative
      Property.

     

    Record
      Date:  With respect to any Distribution Date, the close
      of business on the last Business Day of the month preceding the month of that
      Distribution Date.

     

    Reference
      Bank:  As defined in Section 4.08.

     

    Refinance
      Loan:  Any Mortgage Loan the proceeds of which are used
      to refinance an Original Mortgage Loan.

     

    Regular
      Certificates:  As specified in the Preliminary
      Statement.

     

    Regulation
      AB:  Subpart 229.1100 – Asset Backed Securities
      (Regulation AB), 17 C.F.R. §§229.1100-229.1123, as such may be amended from time
      to time, and subject to such clarification and interpretation as have been
      provided by the Commission in the adopting release (Asset-Backed Securities,
      Securities Act Release No. 33-8518, 70 Fed. Reg. 1,506, 1,531 (Jan. 7, 2005))
      or
      by the staff of the Commission, or as may be provided by the Commission or
      its
      staff from time to time.

     

    Relief
      Act:  The Servicemembers Civil Relief Act.

     

    Relief
      Act Reductions:  With respect to any Distribution Date
      and any Mortgage Loan as to which there has been a reduction in the amount
      of
      interest collectible thereon for the most recently ended calendar month as
      a
      result of the application of the Relief Act or any similar state or local laws,
      the amount, if any, by which (i) interest collectible on such Mortgage Loan
      for
      the most recently ended calendar month is less than (ii) interest accrued
      thereon for such month pursuant to the Mortgage Note.

     

    REMIC:  A
      “real estate mortgage investment conduit” within the meaning of section 860D of
      the Code.

     

    REMIC
      Provisions:  Provisions of the federal income tax law
      relating to real estate mortgage investment conduits, which appear at sections
      860A through 860G of Subchapter M of Chapter 1 of the Code, and related
      provisions, and regulations promulgated thereunder, as the foregoing may be
      in
      effect from time to time as well as provisions of applicable state
      laws.

     

    REO
      Property: A Mortgaged Property acquired by the Trust Fund through
      foreclosure or deed-in-lieu of foreclosure in connection with a defaulted
      Mortgage Loan.

     

    Reportable
      Event:  Any event required to be reported on Form 8-K,
      and in any event, the following:

     

    (a)           entry
      into a definitive agreement related to the Trust Fund, the Certificates or
      the
      Mortgage Loans, or an amendment to a Transaction Document, even if the Depositor
      is not a party to such agreement (e.g., a servicing agreement with a servicer
      contemplated by Item 1108(a)(3) of Regulation AB);

     

    

    
      
        
          
          

        

        
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    (b)           termination
      of a Transaction Document (other than by expiration of the agreement on its
      stated termination date or as a result of all parties completing their
      obligations under such agreement), even if the Depositor is not a party to
      such
      agreement (e.g., a servicing agreement with a servicer contemplated by Item
      1108(a)(3) of Regulation AB);

     

    (c)           with
      respect to the Servicer only, if the Servicer becomes aware of any bankruptcy
      or
      receivership with respect to the Seller, the Depositor, the Servicer, the
      Trustee, the Cap Counterparty, any enhancement or support provider contemplated
      by Items 1114(b) or 1115 of Regulation AB, or any other material party
      contemplated by Item 1101(d)(1) of Regulation AB;

     

    (d)           with
      respect to the Trustee, the Servicer and the Depositor only, the occurrence
      of
      an early amortization, performance trigger or other event, including an Event
      of
      Default under this Agreement;

     

    (e)           any
      amendment to this Agreement;

     

    (f)           the
      resignation, removal, replacement, substitution of the Servicer or the
      Trustee;

     

    (g)           with
      respect to the Servicer only, if the Servicer becomes aware that (i) any
      material enhancement or support specified in Item 1114(a)(1) through (3) of
      Regulation AB or Item 1115 of Regulation AB that was previously applicable
      regarding one or more Classes of the Certificates has terminated other than
      by
      expiration of the contract on its stated termination date or as a result of
      all
      parties completing their obligations under such agreement; (ii) any material
      enhancement specified in Item 1114(a)(1) through (3) of Regulation AB or Item
      1115 of Regulation AB has been added with respect to one or more Classes of
      the
      Certificates; or (iii) any existing material enhancement or support specified
      in
      Item 1114(a)(1) through (3) of Regulation AB or Item 1115 of Regulation AB
      with
      respect to one or more Classes of the Certificates has been materially amended
      or modified; and

     

    (h)           with
      respect to the Trustee, the Servicer and the Depositor only, a required
      distribution to Holders of the Certificates is not made as of the required
      Distribution Date under this Agreement.

     

    Reporting
      Date:  As to any Distribution Date, the 18th day of each
      month or if that day is not a Business Day the next Business Day.

     

    Reporting
      Subcontractor:  With respect to the Servicer or the
      Trustee, any Subcontractor determined by such Person pursuant to Section
      11.08(b) to be “participating in the servicing function” within the meaning of
      Item 1122 of Regulation AB.  References to a Reporting Subcontractor
      shall refer only to the Subcontractor of such Person and shall not refer to
      Subcontractors generally.

     

    Request
      for Release: The Request for Release submitted by the Servicer to
      the Trustee, substantially in the form of Exhibits M and N, as
      appropriate.

     

    Required
      Insurance Policy:  For any Mortgage Loan, any insurance
      policy that is required to be maintained from time to time under this
      Agreement.

     

    Residual
      Certificates:  As specified in the Preliminary
      Statement.

     

    Responsible
      Officer:  When used with respect to the Trustee, any
      Managing Director, any Director, Vice President, any Assistant Vice President,
      any Associate, any Assistant Secretary, any Trust Officer, or any other officer
      of the Trustee customarily performing functions similar to those performed
      by
      any of the above designated officers who at such time shall be officers to
      whom,
      with respect to a particular matter, the matter is referred because of the
      officer’s knowledge of and familiarity with the particular subject and who has
      direct responsibility for the administration of this Agreement.

     

    

    
      
        
          
          

        

        
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    Restricted
      Classes:  As defined in Section 4.02(e).

     

    Reuters
      Page LIBOR01:  The display page currently so designated
      as the “LIBOR01” page on Reuters (or any page replacing that page on that
      service for the purpose of displaying comparable rates or prices).

     

    SAIF:  The
      Savings Association Insurance Fund, or any successor thereto.

     

    Sarbanes-Oxley
      Certification:  As defined in Section
      11.05.

     

    S&P:  Standard
      & Poor’s, a division of The McGraw-Hill Companies, Inc.  If
      S&P is designated as a Rating Agency in the Preliminary Statement, for
      purposes of Section 10.05(b) the address for notices to S&P shall be
      Standard & Poor’s, a division of The McGraw-Hill Companies, Inc., 55 Water
      Street, New York, New York 10041, Attention: Mortgage Surveillance Monitoring,
      or any other address that S&P furnishes to the Depositor and the
      Servicer.

     

    Scheduled
      Balance: Not
      applicable.

     

    Scheduled
      Classes:  As specified in the Preliminary
      Statement.

     

    Scheduled
      Payment:  The scheduled monthly payment on a Mortgage
      Loan due on any Due Date allocable to principal and/or interest on such Mortgage
      Loan which, unless otherwise specified herein, shall give effect to any related
      Debt Service Reduction and any Deficient Valuation that affects the amount
      of
      the monthly payment due on such Mortgage Loan.

     

    Securities
      Act: The Securities Act of 1933, as amended.

     

    Security
      Agreement:  For any Cooperative Loan, the agreement
      between the owner of the related Co-op Shares and the originator of the related
      Mortgage Note that defines the security interest in the Co-op
      Shares and the related Proprietary Lease.

     

    Seller:  IndyMac
      Bank, F.S.B., a federal savings bank, and its successors and assigns, in its
      capacity as seller of the Mortgage Loans to the Depositor.

     

    Senior
      Certificate Group:  As specified in the Preliminary
      Statement.

     

    Senior
      Certificates:  As specified in the Preliminary
      Statement.

     

    Senior
      Credit Support Depletion Date:  The date on which the
      Class Certificate Balance of each Class of Subordinated Certificates has been
      reduced to zero.

     

    Senior
      Percentage:  As to any Senior Certificate Group and
      Distribution Date, the percentage equivalent (not greater than 100%) of a
      fraction the numerator of which is the aggregate Class Certificate Balance
      of
      the Senior Certificates of such Senior Certificate Group immediately before
      the
      Distribution Date and the denominator of which is the aggregate Stated Principal
      Balance of the Mortgage Loans in the related Loan Group as of the Due Date
      occurring in the month prior to the month of that Distribution Date (after
      giving effect to Principal Prepayments received on the related Mortgage Loans
      in
      the Prepayment Period related to such prior Due Date); provided, however, that
      on any Distribution Date after the second Senior Termination Date, the Senior
      Percentage for the Senior Certificates of the remaining Senior Certificate
      Group
      is the percentage equivalent (not greater than 100%) of a fraction, the
      numerator of which is the aggregate Class Certificate Balance of the Senior
      Certificates of such remaining Senior Certificate Group immediately prior to
      such Distribution Date and the denominator is the aggregate Class Certificate
      Balance of all Classes of Certificates immediately prior to that Distribution
      Date.

     

    

    
      
        
          
          

        

        
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    Senior
      Prepayment Percentage:  As to a Senior Certificate Group
      and any Distribution Date during the seven years beginning on the first
      Distribution Date, 100%.  The related Senior Prepayment Percentage for
      any Distribution Date occurring on or after the seventh anniversary of the
      first
      Distribution Date will, except as provided in this Agreement, be as follows:
      for
      any Distribution Date in the first year thereafter, the related Senior
      Percentage plus 70% of the related Subordinated Percentage for such Distribution
      Date; for any Distribution Date in the second year thereafter, the related
      Senior Percentage plus 60% of the related Subordinated Percentage for such
      Distribution Date; for any Distribution Date in the third year thereafter,
      the
      related Senior Percentage plus 40% of the related Subordinated Percentage for
      such Distribution Date; for any Distribution Date in the fourth year thereafter,
      the related Senior Percentage plus 20% of the related Subordinated Percentage
      for such Distribution Date; and for any Distribution Date thereafter, the
      related Senior Percentage for such Distribution Date (unless on any Distribution
      Date the Senior Percentage of a Senior Certificate Group exceeds the initial
      Senior Percentage for such Senior Certificate Group in which case the Senior
      Prepayment Percentage for each Senior Certificate Group for such Distribution
      Date will once again equal 100%).  Notwithstanding the foregoing, no
      decrease in any Senior Prepayment Percentage will occur unless both Senior
      Step
      Down Conditions are satisfied with respect to all of the Mortgage
      Loans.

     

    Notwithstanding
      the preceding paragraphs, if (x) on or before the Distribution Date in June
      2010, the Aggregate Subordinated Percentage is at least 200% of the Aggregate
      Subordinated Percentage as of the Closing Date, the delinquency test set forth
      in the definition of Senior Step Down Conditions is satisfied and cumulative
      Realized Losses do not exceed 20% of the aggregate Class Certificate Balance
      of
      the Subordinated Certificates as of the Closing Date, the Senior Prepayment
      Percentage for each Senior Certificate Group will equal the related Senior
      Percentage for that Distribution Date plus 50% of an amount equal to 100% minus
      the related Senior Percentage for that Distribution Date and (y) after the
      Distribution Date in June 2010, the Aggregate Subordinated Percentage is at
      least 200% of the Aggregate Subordinated Percentage as of the Closing Date,
      the
      delinquency test set forth in the definition of Senior Step Down Conditions
      is
      satisfied and cumulative Realized Losses do not exceed 30% of the aggregate
      Class Certificate Balance of the Subordinated Certificates as of the Closing
      Date, the Senior Prepayment Percentage for each Senior Certificate Group will
      equal the related Senior Percentage.

     

    Senior
      Principal Distribution Amount:  As to any Distribution
      Date and any Loan Group, the sum of (i) the related Senior Percentage of all
      amounts described in clauses (a) through (d) of the definition of Principal
      Amount for that Loan Group and such Distribution Date, (ii) with respect to
      any Mortgage Loan that became a Liquidated Mortgage Loan during the calendar
      month preceding the month of such Distribution Date, the lesser of (x) the
      related Senior Percentage of the Stated Principal Balance of such Mortgage
      Loan
      and (y) either (A) if no Excess Losses were sustained on the Liquidated Mortgage
      Loan during the preceding calendar month, the related Senior Prepayment
      Percentage of the amount of the Liquidation Proceeds allocable to principal
      received on the Mortgage Loan or (B) if an Excess Loss was sustained with
      respect to such Liquidated Mortgage Loan during such preceding calendar month,
      the Senior Percentage of the amount of the Liquidation Proceeds allocable to
      principal received with respect to such Mortgage Loan, and (iii) the sum of
      (x)
      the Senior Prepayment Percentage of the amounts described in clause (f) of
      the
      definition of Principal Amount for that Loan Group and such Distribution Date,
      and (y) the applicable Senior Prepayment Percentage of any Subsequent Recoveries
      described in clause (g) of the definition of Principal Amount for that Loan
      Group and such Distribution Date; provided, however, that if a Bankruptcy Loss
      that is an Excess Loss is sustained with respect to a Mortgage Loan in that
      Loan
      Group that is not a Liquidated Mortgage Loan, the Senior Principal Distribution
      Amount will be reduced on the related Distribution Date by the Senior Percentage
      of the applicable principal portion of such Bankruptcy Loss; provided further,
      however, on any Distribution Date after the second Senior Termination Date,
      the
      Senior Principal Distribution Amount for the remaining Senior Certificate Group
      will be calculated pursuant to the above formula based on all the Mortgage
      Loans
      in the Mortgage Pool, as opposed to the Mortgage Loans in the related Loan
      Group.

     

    

    
      
        
          
          

        

        
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    Senior
      Step Down Conditions:  As to any Distribution Date:
      (i) the aggregate Stated Principal Balance of all the Mortgage Loans 60
      days or more Delinquent (averaged over the preceding six month period)
      (including any Mortgage Loans subject to foreclosure proceedings, REO Property
      (regardless of whether that Mortgage Loan is 60 days or more Delinquent) and
      Mortgage Loans the Mortgagors of which are in bankruptcy), as a percentage
      (a)
      if such date is on or prior to second Senior Termination Date, the Subordinated
      Percentage for that Loan Group of the aggregate Stated Principal Balance of
      the
      Mortgage Loans in that Loan Group, or (b) if such date is after the second
      Senior Termination Date, the aggregate Class Certificate Balance of the
      Subordinated Certificates immediately prior to such Distribution Date, does
      not
      equal or exceed 50%, and (ii) cumulative Realized Losses do not exceed:
      (a) commencing with the Distribution Date on the seventh anniversary of the
      first Distribution Date, 30% of the Original Subordinated Principal Balance,
      (b) commencing with the Distribution Date on the eighth anniversary of the
      first Distribution Date, 35% of the Original Subordinated Principal Balance,
      (c) commencing with the Distribution Date on the ninth anniversary of the
      first Distribution Date, 40% of the Original Subordinated Principal Balance,
      (d) commencing with the Distribution Date on the tenth anniversary of the
      first Distribution Date, 45% of the Original Subordinated Principal Balance,
      and
      (e) commencing with the Distribution Date on the eleventh anniversary of
      the first Distribution Date and thereafter, 50% of the Original Subordinated
      Principal Balance.

     

    Senior
      Termination Date:  For each Senior Certificate Group,
      the Distribution Date on which the aggregate Class Certificate Balance of the
      related Classes of Senior Certificates has been reduced to zero.

     

    Servicer:  IndyMac
      Bank, F.S.B., a federal savings bank, and its successors and assigns, in its
      capacity as servicer under this Agreement.

     

    Servicer
      Advance Date:  As to any Distribution Date, 12:30
      P.M.  Pacific time on the Business Day preceding that Distribution
      Date.

     

    Servicing
      Advances:  All customary, reasonable, and necessary “out
      of pocket” costs and expenses incurred in the performance by the Servicer of its
      servicing obligations, including the cost of

     

    (a)           the
      preservation, restoration, and protection of a Mortgaged Property,

     

    (b)           expenses
      reimbursable to the Servicer pursuant to Section 3.12 and any enforcement or
      judicial proceedings, including foreclosures,

     

    (c)           the
      maintenance and liquidation of any REO Property,

     

    (d)           compliance
      with the obligations under Section 3.10, and

     

    (e)           reasonable
      compensation to the Servicer or its affiliates for acting as broker in
      connection with the sale of foreclosed Mortgaged Properties and for performing
      certain default management and other similar services (including appraisal
      services) in connection with the servicing of defaulted Mortgage
      Loans.  For purposes of this clause (e), only costs and expenses
      incurred in connection with the performance of activities generally considered
      to be outside the scope of customary servicing or master servicing duties shall
      be treated as Servicing Advances.

     

    

    
      
        
          
          

        

        
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    Servicing
      Criteria:  The “servicing criteria” set forth in Item
      1122(d) of Regulation AB.

     

    Servicing
      Fee:  As to each Mortgage Loan and any Distribution
      Date, one month’s interest at the applicable Servicing Fee Rate on the Stated
      Principal Balance of the Mortgage Loan, or, whenever a payment of interest
      accompanies a Principal Prepayment in Full made by the Mortgagor, interest
      at
      the Servicing Fee Rate on the Stated Principal Balance of the Mortgage Loan
      for
      the period covered by the payment of interest, subject to reduction as provided
      in Section 3.15.

     

    Servicing
      Fee Rate:For each Mortgage Loan, 0.375%.

     

    Servicing
      Officer:  Any officer of the Servicer involved in, or
      responsible for, the administration and servicing of the Mortgage Loans whose
      name and facsimile signature appear on a list of servicing officers furnished
      to
      the Trustee by the Servicer on the Closing Date pursuant to this Agreement,
      as
      the list may from time to time be amended.

     

    Servicing
      Standard: That degree of skill and care exercised by the Servicer
      with respect to mortgage loans comparable to the Mortgage Loans serviced by
      the
      Servicer for itself or others.

     

    Six-Month
      LIBOR Index:  The average of the London interbank
      offered rates for six month U.S. dollar deposits in the London market, generally
      as set forth in either The Wall Street Journal or some other source generally
      accepted in the residential mortgage loan origination business and specified
      in
      the related Mortgage Note or, if such rate ceases to be published in The Wall
      Street Journal or becomes unavailable for any reason, then based upon a new
      index selected by the Servicer, based on comparable information, in each case,
      as most recently announced as of either 45 days prior to, or the first Business
      Day of the month immediately preceding the month of, such Adjustment
      Date.

     

    Soft
      Prepayment Charge:  As to a Mortgage Loan, any charge
      payable by a Mortgagor in connection with certain partial Principal Prepayments
      and all Principal Prepayments in Full made within the related Prepayment Charge
      Period other than as a result of selling the Mortgaged Property, the Soft
      Prepayment Charges with respect to each applicable Mortgage Loan so held by
      the
      Trust Fund being identified in the Mortgage Loan Schedule.

     

    Special
      Hazard Coverage Termination Date:  The point in time at
      which the Special Hazard Loss Coverage Amount is reduced to zero.

     

    Special
      Hazard Loss:  Any Realized Loss suffered by a Mortgaged
      Property on account of direct physical loss, but not including (i) any loss
      of a
      type covered by a hazard insurance policy or a flood insurance policy required
      to be maintained with respect to such Mortgaged Property pursuant to Section
      3.10 to the extent of the amount of such loss covered thereby, or (ii) any
      loss
      caused by or resulting from:

     

    (a)           normal
      wear and tear;

     

    (b)           fraud,
      conversion or other dishonest act on the part of the Trustee, the Servicer
      or
      any of their agents or employees (without regard to any portion of the loss
      not
      covered by any errors and omissions policy);

     

    (c)           errors
      in design, faulty workmanship or faulty materials, unless the collapse of the
      property or a part thereof ensues and then only for the ensuing
      loss;

     

    

    
      
        
          
          

        

        
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    (d)           nuclear
      or chemical reaction or nuclear radiation or radioactive or chemical
      contamination, all whether controlled or uncontrolled, and whether such loss
      be
      direct or indirect, proximate or remote or be in whole or in part caused by,
      contributed to or aggravated by a peril covered by the definition of the term
      “Special Hazard Loss”;

     

    (e)           hostile
      or warlike action in time of peace and war, including action in hindering,
      combating or defending against an actual, impending or expected
      attack:

     

    1.           by
      any government or sovereign power, dejure or
defacto, or by any authority maintaining or using
      military, naval
      or air forces; or

     

    2.           by
      military, naval or air forces; or

     

    3.           by
      an agent of any such government, power, authority or forces;

     

    (f)           any
      weapon of war employing nuclear fission, fusion or other radioactive force,
      whether in time of peace or war; or

     

    (g)           insurrection,
      rebellion, revolution, civil war, usurped power or action taken by governmental
      authority in hindering, combating or defending against such an occurrence,
      seizure or destruction under quarantine or customs regulations, confiscation
      by
      order of any government or public authority, or risks of contraband or illegal
      transportation or trade.

     

    Special
      Hazard Loss Coverage Amount:  With respect to the first
      Distribution Date, $6,992,172.  With respect to any Distribution Date
      after the first Distribution Date, the lesser of (a) the greatest of (i) 1%
      of
      the aggregate of the principal balances of the Mortgage Loans, (ii) twice the
      principal balance of the largest Mortgage Loan and (iii) the aggregate of the
      principal balances of all Mortgage Loans secured by Mortgaged Properties located
      in the single California postal zip code area having the highest aggregate
      principal balance of any such zip code area and (b) the Special Hazard Loss
      Coverage Amount as of the Closing Date less the amount, if any, of Special
      Hazard Losses allocated to the Certificates since the Closing
      Date.  All principal balances for the purpose of this definition will
      be calculated as of the first day of the calendar month preceding the month
      of
      such Distribution Date after giving effect to Scheduled Payments on the Mortgage
      Loans then due, whether or not paid.

     

    Special
      Hazard Mortgage Loan:  A Liquidated Mortgage Loan as to
      which a Special Hazard Loss has occurred.

     

    Startup
      Day:  The Closing Date.

     

    Stated
      Principal Balance:  As to any Mortgage Loan and Due
      Date, the unpaid principal balance of such Mortgage Loan as of such Due Date,
      as
      specified in the amortization schedule at the time relating thereto (before
      any
      adjustment to such amortization schedule by reason of any moratorium or similar
      waiver or grace period) after giving effect to the sum of: (i) the payment
      of
      principal due on such Due Date and irrespective of any delinquency in payment
      by
      the related Mortgagor and (ii) any Liquidation Proceeds allocable to principal
      received in the prior calendar month and Principal Prepayments received through
      the last day of the Prepayment Period in which the Due Date occurs, in each
      case
      with respect to such Mortgage Loan.

     

    Subcontractor:  Any
      vendor, subcontractor or other Person that is not responsible for the overall
      servicing (as “servicing” is commonly understood by participants in the
      mortgage-backed securities market) of Mortgage Loans but performs one or more
      discrete functions identified in Item 1122(d) of Regulation AB with respect
      to
      the Mortgage Loans under the direction or authority of the Servicer or the
      Trustee, as the case may be.

     

    

    
      
        
          
          

        

        
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    Subordinate
      Pass-Through Rate: As to any Class of Subordinated Certificates
      and the Interest Accrual Period for any Distribution Date, a per annum rate
      equal to (a) the sum of the following for each Loan Group: the product of (x)
      the related Assumed Balance immediately prior to that Distribution Date and
      (y)
      the Weighted Average Adjusted Net Mortgage Rate of the Mortgage Loans in that
      Loan Group divided by (b) the aggregate of the Assumed Balance for each
      Loan Group immediately prior to that Distribution Date.

     

    Subordinated
      Certificates:  As specified in the Preliminary
      Statement.

     

    Subordinated
      Percentage:  As to any Distribution Date on or prior to
      the second Senior Termination Date and any Loan Group, 100% minus the Senior
      Percentage for the Senior Certificate Group relating to such Loan Group for
      such
      Distribution Date.  As to any Distribution Date after the second
      Senior Termination Date, 100% minus the Senior Percentage for such Distribution
      Date.

     

    Subordinated
      Prepayment Percentage:  As to any Distribution Date and
      Loan Group, 100% minus the related Senior Prepayment Percentage for such
      Distribution Date.

     

    Subordinated
      Principal Distribution Amount:  As to any Distribution
      Date and Loan Group, the sum of the following with respect to each Loan Group:
      (i) the Subordinated Percentage of all amounts described in
      clauses (a) through (d) of the definition of Principal Amount with respect
      to such Loan Group and such Distribution Date, (ii) with respect to any
      Mortgage Loan in the related Loan Group that became a Liquidated Mortgage Loan
      during the calendar month preceding the month of such Distribution Date, the
      amount of Liquidation Proceeds allocable to principal received with respect
      thereto remaining after application thereof pursuant to clause (ii) of the
      definition of Senior Principal Distribution Amount for that Loan Group, up
      to
      the related Subordinated Percentage of the Stated Principal Balance of such
      Mortgage Loan and (iii) the sum of the Subordinated Prepayment Percentage
      of the amounts described in clauses (f) and (g) of the definition of
      Principal Amount with respect to that Loan Group for such Distribution Date;
      provided, however, that on any Distribution Date after the second Senior
      Termination Date, the Subordinated Principal Distribution Amount will not be
      calculated by Loan Group but will equal the amount calculated pursuant to the
      formula set forth above based on the applicable Subordinated Percentage and
      Subordinated Prepayment Percentage for the Subordinated Certificates for such
      Distribution Date with respect to all of the Mortgage Loans as opposed to the
      Mortgage Loans only in the related Loan Group.

     

    Subsequent
      Recoveries:  As to any Distribution Date, with respect
      to a Liquidated Mortgage Loan that resulted in a Realized Loss in a prior
      calendar month, unexpected amounts received by the Servicer (net of any related
      expenses permitted to be reimbursed pursuant to Section 3.09) specifically
      related to such Liquidated Mortgage Loan.

     

    Substitute
      Mortgage Loan:  A Mortgage Loan substituted by the
      Seller for a Deleted Mortgage Loan that must, on the date of substitution,
      as
      confirmed in a Request for Release, substantially in the form of Exhibit
      M,

     

    (i)           have
      a Stated Principal Balance, after deduction of the principal portion of the
      Scheduled Payment due in the month of substitution, not in excess of, and not
      more than 10% less than, the Stated Principal Balance of the Deleted Mortgage
      Loan (unless the amount of any shortfall is deposited by the Seller in the
      Certificate Account and held for distribution to the Certificateholders on
      the
      related Distribution Date);

     

    

    
      
        
          
          

        

        
          36

          
            

          

        

        
          
          

        

      

    

    

    (ii)           have
      a Mortgage Rate no lower than and not more than 1% per annum higher than the
      Deleted Mortgage Loan;

     

    
      	
               

            	
              (iii)

            	
              have
                a Maximum Mortgage Rate not more than 1% per annum higher than and
                not
                lower than the Maximum Mortgage Rate of the Deleted Mortgage
                Loan;

            

    

     

    
      	
               

            	
              (iv)

            	
              have
                the same Mortgage Index and interval between Adjustment Dates as
                the
                Deleted Mortgage Loan and a Gross Margin not more than 1% per annum
                higher
                than, and not lower than that of the Deleted Mortgage Loan, provided
                that
                Substitute Mortgage Loans with remaining terms to maturity greater
                than
                that of the Deleted Mortgage Loans may not exceed 5% of the Cut-off
                Date
                Pool Principal Balance;

            

    

     

    (vi)           have
      a Loan-to-Value Ratio no higher than that of the Deleted Mortgage
      Loan;

     

    (vii)          have
      a remaining term to maturity no greater than one year more than (and not more
      than one year less than) that of the Deleted Mortgage Loan;

     

    (viii)         not
      be a Cooperative Loan unless the Deleted Mortgage Loan was a Cooperative Loan;
      and

     

    (ix)           comply
      with each representation and warranty in Section 2.03.

     

    Substitution
      Adjustment Amount:  As defined in Section
      2.03.

     

    Suspension
      Notification: Notification to the Commission of the suspension of
      the Trust Fund’s obligation to file reports pursuant to Section 15(d) of the
      Exchange Act.

     

    Targeted
      Balance:  Not applicable.

     

    Targeted
      Principal Classes:  As specified in the Preliminary
      Statement.

     

    Transaction
      Documents:  This Agreement and any other document or
      agreement entered into in connection with the Trust Fund, the Certificates
      or
      the Mortgage Loans.

     

    Transfer:
      Any direct or indirect transfer or sale of any Ownership Interest in a Residual
      Certificate.

     

    Transfer
      Payment Made:  As defined in Section 4.03.

     

    Transfer
      Payment Received:  As defined in Section
      4.03.

     

    Trust
      Fund:  The corpus of the trust created under this
      Agreement consisting of

     

    (i)           the
      Mortgage Loans and all interest and principal received on them after the Cut-off
      Date, other than amounts due on the Mortgage Loans by the Cut-off
      Date;

     

    (ii)           the
      Certificate Account, the Distribution Account and all amounts deposited therein
      pursuant to this Agreement (including amounts received from the Depositor on
      the
      Closing Date that will be deposited by the Depositor in the Certificate Account
      pursuant to Section 2.01);

     

    (iii)           property
      that secured a Mortgage Loan and has been acquired by foreclosure, deed-in-lieu
      of foreclosure, or otherwise;

     

    

    
      
        
          
          

        

        
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    (iv)           the
      right to collect any amounts under any mortgage insurance policies covering
      any
      Mortgage Loan and any collections received under any mortgage insurance policies
      covering any Mortgage Loan;

     

    
      	
               

            	
              (v)

            	
              all
                proceeds of the conversion, voluntary or involuntary, of any of the
                foregoing.

            

    

     

    Trustee:  Deutsche
      Bank National Trust Company and its successors and, if a successor trustee
      is
      appointed under this Agreement, the successor.

     

    Trustee
      Fee:  The fee payable to the Trustee on each
      Distribution Date for its services as Trustee hereunder, in an amount equal
      to
      one-twelfth of the Trustee Fee Rate multiplied by the aggregate Stated Principal
      Balance of the Mortgage Loans as of the Due Date in the month preceding the
      month of such Distribution Date (after giving effect to Principal Prepayments
      in
      the Prepayment Period related to that prior Due Date)..

     

    Trustee
      Fee Rate:  0.0055% per annum.

     

    The
      terms
“United States,” “State,” and
“International Organization” have the meanings in
      section 7701
      of the Code or successor provisions.  A corporation will not be
      treated as an instrumentality of the United States or of any State or political
      subdivision thereof for these purposes if all of its activities are subject
      to
      tax and, with the exception of the Federal Home Loan Mortgage Corporation,
      a
      majority of its board of directors is not selected by such government
      unit.

     

    UCC:  The
      Uniform Commercial Code for the State of New York.

     

    Undercollateralized
      Group:  As defined in Section 4.03.

     

    Underwriter’s
      Exemption:  Prohibited Transaction Exemption 2002-41, 67
      Fed.  Reg.  54487 (2002) (or any successor thereto), or any
      substantially similar administrative exemption granted by the U.S. Department
      of
      Labor

     

    United
      States Person or U.S. Person:

     

    (i)           A
      citizen or resident of the United States;

     

    (ii)           a
      corporation (or entity treated as a corporation for tax purposes) created or
      organized in the United States or under the laws of the United States or of
      any
      state thereof, including, for this purpose, the District of
      Columbia;

     

    (iii)           a
      partnership (or entity treated as a partnership for tax purposes) organized
      in
      the United States or under the laws of the United States or of any state
      thereof, including, for this purpose, the District of Columbia (unless provided
      otherwise by future Treasury regulations);

     

    (iv)           an
      estate whose income is includible in gross income for United States income
      tax
      purposes regardless of its source; or

     

    (v)           a
      trust, if a court within the United States is able to exercise primary
      supervision over the administration of the trust and one or more U.S. Persons
      have authority to control all substantial decisions of the
      trust.  Notwithstanding the last clause of the preceding sentence, to
      the extent provided in Treasury regulations, certain trusts in existence on
      August 20, 1996, and treated as U.S. Persons before that date, may elect to
      continue to be U.S. Persons.

     

    

    
      
        
          
          

        

        
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    U.S.A.
      Patriot Act: The Uniting and Strengthening America by Providing
      Appropriate Tools Required to Intercept and Obstruct Terrorism Act of
      2001.

     

    Voting
      Rights: The portion of the voting rights of all of the
      Certificates that is allocated to any Certificate.  As of any date of
      determination, (a) 1% of all Voting Rights shall be allocated to the Holder
      of
      the Class A-R Certificates and (b) the remaining Voting Rights shall be
      allocated among Holders of the remaining Classes of Senior and Subordinated
      Certificates in proportion to the Certificate Balances of the respective
      Certificates on the date.

     

    Weighted
      Average Adjusted Net Mortgage Rate:  For any
      Distribution Date and Loan Group, the average of the Adjusted Net Mortgage
      Rate
      of each Mortgage Loan in that Loan Group, weighted on the basis of its Stated
      Principal Balance as of the Due Date in the prior month (after giving effect
      to
      Principal Prepayments in the Prepayment Period related to such prior Due
      Date).

     

    Weighted
      Average Initial Adjustment Date:  Not
      applicable.

     

    Section
      1.02                                Rules
      of Construction.

     

    Except
      as
      otherwise expressly provided in this Agreement or unless the context clearly
      requires otherwise

     

    (a)  References
      to designated articles, sections, subsections, exhibits, and other subdivisions
      of this Agreement, such as “Section 6.12 (a),” refer to the designated article,
      section, subsection, exhibit, or other subdivision of this Agreement as a whole
      and to all subdivisions of the designated article, section, subsection, exhibit,
      or other subdivision.  The words “herein,” “hereof,” “hereto,”
“hereunder,” and other words of similar import refer to this Agreement as a
      whole and not to any particular article, section, exhibit, or other subdivision
      of this Agreement.

     

    (b)  Any
      term that relates to a document or a statute, rule, or regulation includes
      any
      amendments, modifications, supplements, or any other changes that may have
      occurred since the document, statute, rule, or regulation came into being,
      including changes that occur after the date of this Agreement.

     

    (c)  Any
      party may execute any of the requirements under this Agreement either directly
      or through others, and the right to cause something to be done rather than
      doing
      it directly shall be implicit in every requirement under this
      Agreement.  Unless a provision is restricted as to time or limited as
      to frequency, all provisions under this Agreement are implicitly available
      and
      things may happen from time to time.

     

    (d)  The
      term “including” and all its variations mean “including but not limited to.”
Except when used in conjunction with the word “either,” the word “or” is always
      used inclusively (for example, the phrase “A or B” means “A or B or both,” not
“either A or B but not both”).

     

    (e)  A
      reference to “a [thing]” or “any [of a thing]” does not imply the existence or
      occurrence of the thing referred to even though not followed by “if any,” and
“any [of a thing]” is any of it.  A reference to the plural of
      anything as to which there could be either one or more than one does not imply
      the existence of more than one (for instance, the phrase “the obligors on a
      note” means “the obligor or obligors on a note”).  “Until [something
      occurs]” does not imply that it must occur, and will not be modified by the word
“unless.” The word “due” and the word “payable” are each used in the sense that
      the stated time for payment has passed.  The word “accrued” is used in
      its accounting sense, i.e., an amount paid is no longer accrued.  In
      the calculation of amounts of things, differences and sums may generally result
      in negative numbers, but when the calculation of the excess of one thing over
      another results in zero or a negative number, the calculation is disregarded
      and
      an “excess” does not exist.  Portions of things may be expressed as
      fractions or percentages interchangeably.

     

    

    
      
        
          
          

        

        
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    (f)  All
      accounting terms used in an accounting context and not otherwise defined, and
      accounting terms partly defined in this Agreement, to the extent not completely
      defined, shall be construed in accordance with generally accepted accounting
      principles.  To the extent that the definitions of accounting terms in
      this Agreement are inconsistent with their meanings under generally accepted
      accounting principles, the definitions contained in this Agreement shall
      control.  Capitalized terms used in this Agreement without definition
      that are defined in the Uniform Commercial Code are used in this Agreement
      as
      defined in the Uniform Commercial Code.

     

    (g)  In
      the computation of a period of time from a specified date to a later specified
      date or an open-ended period, the words “from” and “beginning” mean “from and
      including,” the word “after” means “from but excluding,” the words “to” and
“until” mean “to but excluding,” and the word “through” means “to and
      including.” Likewise, in setting deadlines or other periods, “by” means “by.”
The words “preceding,” “following,” and words of similar import, mean
      immediately preceding or following.  References to a month or a year
      refer to calendar months and calendar years.

     

    (h)  Any
      reference to the enforceability of any agreement against a party means that
      it
      is enforceable, subject as to enforcement against the party, to applicable
      bankruptcy, insolvency, reorganization, and other similar laws of general
      applicability relating to or affecting creditors’ rights and to general equity
      principles.

     

    

    
      
        
          
          

        

        
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    ARTICLE
      TWO

     

    CONVEYANCE
      OF
      MORTGAGE
      LOANS;
      REPRESENTATIONS
      AND
      WARRANTIES

     

    Section
      2.01                                Conveyance
      of Mortgage Loans.

     

    (a)  The
      Seller, concurrently with the execution and delivery of this Agreement, hereby
      transfers to the Depositor, without recourse, all the interest of the Seller
      in
      each Mortgage Loan, including all interest and principal received or receivable
      by the Seller on each Mortgage Loan after the Cut-off Date and all interest
      and
      principal payments on each Mortgage Loan received before the Cut-off Date for
      installments of interest and principal due after the Cut-off Date but not
      including payments of principal and interest due by the Cut-off Date. By the
      Closing Date, the Seller shall deliver to the Depositor or, at the Depositor’s
      direction, to the Trustee or other designee of the Depositor, the Mortgage
      File
      for each  Mortgage Loan listed in the Mortgage Loan Schedule (except
      that, in the case of Mortgage Loans that are Delay Delivery Mortgage Loans,
      such
      delivery may take place within five Business Days of the Closing Date) as of
      the
      Closing Date.  The delivery of the Mortgage Files shall be made
      against payment by the Depositor of the purchase price, previously agreed to
      by
      the Seller and Depositor, for the Mortgage Loans.  With respect to any
      Mortgage Loan that does not have a first payment date on or before the Due
      Date
      in the month of the first Distribution Date, the Seller shall deposit into
      the
      Distribution Account on the first Distribution Account Deposit Date an amount
      equal to one month’s interest at the related Adjusted Mortgage Rate on the
      Cut-off Date Principal Balance of such Mortgage Loan.  Also on the
      Closing Date the Depositor shall deposit $200 into the Certificate Account
      for
      the benefit of the Class P-1 and Class P-2 Certificates.

     

    (b)  The
      Depositor, concurrently with the execution and delivery of this Agreement,
      hereby transfers to the Trustee for the benefit of the Certificateholders,
      without recourse, all the interest of the Depositor in the Trust Fund, together
      with the Depositor’s right to require the Seller to cure any breach of a
      representation or warranty made in this Agreement by the Seller or to repurchase
      or substitute for any affected Mortgage Loan in accordance with this
      Agreement.

     

    (c)  In
      connection with the transfer and assignment of each Mortgage Loan, the Depositor
      has delivered (or, in the case of the Delay Delivery Mortgage Loans, will
      deliver to the Trustee within the time periods specified in the definition
      of
      Delay Delivery Mortgage Loans), for the benefit of the Certificateholders the
      following documents or instruments with respect to each Mortgage Loan so
      assigned:

     

    (i)           The
      original Mortgage Note, endorsed by manual or facsimile signature in blank
      in
      the following form: “Pay to the order of _______________ ______________without
      recourse,” with all intervening endorsements showing a complete chain of
      endorsement from the originator to the Person endorsing the Mortgage Note (each
      endorsement being sufficient to transfer all interest of the party so endorsing,
      as noteholder or assignee thereof, in that Mortgage Note) or a lost note
      affidavit for any Lost Mortgage Note from the Seller stating that the original
      Mortgage Note was lost or destroyed, together with a copy of the Mortgage
      Note.

     

    (ii)           Except
      as provided below and for each Mortgage Loan that is not a MERS Mortgage Loan,
      the original recorded Mortgage or a copy of such Mortgage certified by the
      Seller as being a true and complete copy of the Mortgage (or, in the case of
      a
      Mortgage for which the related Mortgaged Property is located in the Commonwealth
      of Puerto Rico, a true copy of the Mortgage certified as such by the applicable
      notary) and in the case of each MERS Mortgage Loan, the original Mortgage,
      noting the presence of the MIN of the Mortgage Loans and either language
      indicating that the Mortgage Loan is a MOM Loan if the Mortgage Loan is a MOM
      Loan or if the Mortgage Loan was not a MOM Loan at origination, the original
      Mortgage and the assignment thereof to MERS, with evidence of recording
      indicated thereon, or a copy of the Mortgage certified by the public recording
      office in which such Mortgage has been recorded;

     

    

    
      
        
          
          

        

        
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    (iii)           In
      the case of a Mortgage Loan that is not a MERS Mortgage Loan, a duly executed
      assignment of the Mortgage (which may be included in a blanket assignment or
      assignments), together with, except as provided below, all interim recorded
      assignments of the mortgage (each assignment, when duly and validly completed,
      to be in recordable form and sufficient to effect the assignment of and transfer
      to its assignee of the Mortgage to which the assignment relates).  If
      the related Mortgage has not been returned from the applicable public recording
      office, the assignment of the Mortgage may exclude the information to be
      provided by the recording office.  The assignment of Mortgage need not
      be delivered in the case of a Mortgage for which the related Mortgage Property
      is located in the Commonwealth of Puerto Rico.

     

    (iv)           The
      original or copies of each assumption, modification, written assurance, or
      substitution agreement.

     

    (v)           Except
      as provided below, the original or duplicate original lender’s title policy and
      all its riders.

     

    (vi)           The
      originals of the following documents for each Cooperative Loan:

     

    
      	
               

            	
              (A)

            	
              the
                Co-op Shares, together with a stock power in
                blank;

            

    

     

    
      	
               

            	
              (B)

            	
              the
                executed Security Agreement;

            

    

     

    
      	
               

            	
              (C)

            	
              the
                executed Proprietary Lease;

            

    

     

    
      	
               

            	
              (D)

            	
              the
                executed Recognition Agreement;

            

    

     

    
      	
               

            	
              (E)

            	
              the
                executed UCC-1 financing statement that has been filed in all places
                required to perfect the Seller’s interest in the Co-op Shares and the
                Proprietary Lease with evidence of recording on it;
                and

            

    

     

    
      	
               

            	
              (F)

            	
              executed
                UCC-3 financing statements or other appropriate UCC financing statements
                required by state law, evidencing a complete and unbroken line from
                the
                mortgagee to the Trustee with evidence of recording thereon (or in
                a form
                suitable for recordation).

            

    

     

    In
      addition, in connection with the assignment of any MERS Mortgage Loan, the
      Seller agrees that it will cause, at the Seller’s expense, the MERS® System to
      indicate that the Mortgage Loans sold by the Seller to the Depositor have been
      assigned by the Seller to the Trustee in accordance with this Agreement for
      the
      benefit of the Certificateholders by including (or deleting, in the case of
      Mortgage Loans that are repurchased in accordance with this Agreement) in such
      computer files the information required by the MERS® System to identify the
      series of the Certificates issued in connection with such Mortgage
      Loans.  The Seller further agrees that it will not, and will not
      permit the Servicer to, and the Servicer agrees that it will not, alter the
      information referenced in this paragraph with respect to any Mortgage Loan
      sold
      by the Seller to the Depositor during the term of this Agreement unless and
      until such Mortgage Loan is repurchased in accordance with the terms of this
      Agreement.

     

    

    
      
        
          
          

        

        
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      In
        the
        event that in connection with any Mortgage Loan that is not a MERS Mortgage
        Loan
        the Depositor cannot deliver (a) the original recorded Mortgage, (b) all
        interim
        recorded assignments or (c) the lender’s title policy (together with all riders
        thereto) satisfying the requirements of clause (ii), (iii) or (v) above,
        respectively, concurrently with the execution and delivery of this Agreement
        because such document or documents have not been returned from the applicable
        public recording office in the case of clause (ii) or (iii) above, or because
        the title policy has not been delivered to either the Servicer or the Depositor
        by the applicable title insurer in the case of clause (v) above, then the
        Depositor shall promptly deliver to the Trustee, in the case of clause (ii)
        or
        (iii) above, the original Mortgage or the interim assignment, as the case
        may
        be, with evidence of recording indicated on when it is received from the
        public
        recording office, or a copy of it, certified, if appropriate, by the relevant
        recording office and in the case of clause (v) above, the original or a copy
        of
        a written commitment or interim binder or preliminary report of title issued
        by
        the title insurance or escrow company, with the original or duplicate copy
        thereof to be delivered to the Trustee upon receipt thereof.  The
        delivery of the original Mortgage Loan and each interim assignment or a copy
        of
        them, certified, if appropriate, by the relevant recording office, shall
        not be
        made later than one year following the Closing Date, or, in the case of clause
        (v) above, later than 120 days following the Closing Date.  If the
        Depositor is unable to deliver each Mortgage by that date and each interim
        assignment because any documents have not been returned by the appropriate
        recording office, or, in the case of each interim assignment, because the
        related Mortgage has not been returned by the appropriate recording office,
        the
        Depositor shall deliver the documents to the Trustee as promptly as possible
        upon their receipt and, in any event, within 720 days following the Closing
        Date.

    The
      Depositor shall forward to the Trustee (a) from time to time additional original
      documents evidencing an assumption or modification of a Mortgage Loan and (b)
      any other documents required to be delivered by the Depositor or the Servicer
      to
      the Trustee.  If the original Mortgage is not delivered and in
      connection with the payment in full of the related Mortgage Loan the public
      recording office requires the presentation of a “lost instruments affidavit and
      indemnity” or any equivalent document, because only a copy of the Mortgage can
      be delivered with the instrument of satisfaction or reconveyance, the Servicer
      shall execute and deliver the required document to the public recording
      office.  If a public recording office retains the original recorded
      Mortgage or if a Mortgage is lost after recordation in a public recording
      office, the Seller shall deliver to the Trustee a copy of the Mortgage certified
      by the public recording office to be a true and complete copy of the original
      recorded Mortgage.

     

    As
      promptly as practicable after any transfer of a Mortgage Loan under this
      Agreement, and in any event within thirty days after the transfer, the Trustee
      shall (i) affix the Trustee’s name to each assignment of Mortgage, as its
      assignee, and (ii) cause to be delivered for recording in the appropriate public
      office for real property records the assignments of the Mortgages to the
      Trustee, except that, if the Trustee has not received the information required
      to deliver any assignment of a Mortgage for recording, the Trustee shall deliver
      it as soon as practicable after receipt of the needed information and in any
      event within thirty days.

     

    If
      any
      Mortgage Loans have been prepaid in full as of the Closing Date, the Depositor,
      in lieu of delivering the above documents to the Trustee, will deposit in the
      Certificate Account the portion of the prepayment that is required to be
      deposited in the Certificate Account pursuant to Section 3.06.

     

    Notwithstanding
      anything to the contrary in this Agreement, within five Business Days after
      the
      Closing Date, the Seller shall either

     

    (x)           deliver
      to the Trustee the Mortgage File as required pursuant to this Section 2.01
      for
      each Delay Delivery Mortgage Loan or

     

    

    
      
        
          
          

        

        
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    (y)           (A)
      repurchase the Delay Delivery Mortgage Loan or (B) substitute the Substitute
      Mortgage Loan for a Delay Delivery Mortgage Loan, which repurchase or
      substitution shall be accomplished in the manner and subject to the conditions
      in Section 2.03 (treating each such Delay Delivery Mortgage Loan as a Deleted
      Mortgage Loan for purposes of such Section 2.03);

     

    provided,
      however, that if the Seller fails to deliver a Mortgage File for any
      Delay Delivery Mortgage Loan within the period specified herein, the Seller
      shall use its best reasonable efforts to effect a substitution, rather than
      a
      repurchase of, such Deleted Mortgage Loan and provided further that the cure
      period provided for in Section 2.02 or in Section 2.03 shall not apply to the
      initial delivery of the Mortgage File for such Delay Delivery Mortgage Loan,
      but
      rather the Seller shall have five (5) Business Days to cure such failure to
      deliver.  At the end of such period, the Trustee shall send a Delay
      Delivery Certification for the Delay Delivery Mortgage Loans delivered during
      such period in accordance with the provisions of Section 2.02.

     

    (d)  Notwithstanding
      the foregoing, however, the assignments of Mortgage shall not be required to
      be
      submitted for recording (except with respect to any Mortgage Loan secured by
      Mortgaged Property located in Maryland) unless such failure to record would,
      as
      certified to the Trustee in writing by the Servicer, result in a withdrawal
      or a
      downgrading by any Rating Agency of the rating on any Class of Certificates;
      provided, however, that each assignment of Mortgage shall be submitted for
      recording by the Seller (at the direction of the Servicer) in the manner
      described above, at no expense to the Trust Fund or the Trustee, upon the
      earliest to occur of: (i) reasonable direction by the Holders of Certificates
      entitled to at least 25% of the Voting Rights, (ii) the occurrence of a
      bankruptcy, insolvency or foreclosure relating to the Seller, (iii) the
      occurrence of a servicing transfer as described in Section 7.02 and (iv) if
      the
      Seller is not the Servicer and with respect to any one assignment or Mortgage,
      the occurrence of a bankruptcy, insolvency or foreclosure relating to the
      Mortgagor under the related Mortgage.  Notwithstanding the foregoing,
      if the Seller is unable to pay the cost of recording the assignments of
      Mortgage, such expense shall be paid by the Trustee and shall be reimbursable
      out of the Distribution Account.

     

    (e)   The
      Seller agrees to treat the transfer of the Mortgage Loans to the Depositor
      as a
      sale for all tax, accounting, and regulatory purposes.

     

    (f)  The
      Trust Fund does not intend to acquire or hold any Mortgage Loan that would
      violate the representations made by the Seller set forth in clause (27) of
      Schedule III.

     

    Section
      2.02                                Acceptance
      by the Trustee of the Mortgage Loans.

     

    The
      Trustee acknowledges receipt of the documents identified in the Initial
      Certification in the form of Exhibit G-1, and declares that it holds and will
      hold such documents and the other documents delivered to it constituting the
      Mortgage Files for the Mortgage Loans, and that it holds or will hold such
      other
      assets as are included in the Trust Fund, in trust for the exclusive use and
      benefit of all present and future Certificateholders.

     

    The
      Trustee acknowledges that it will maintain possession of the related Mortgage
      Notes in the State of California, unless otherwise permitted by the Rating
      Agencies.  The Trustee agrees to execute and deliver on the Closing
      Date to the Depositor, the Servicer and the Seller an Initial Certification
      in
      the form of Exhibit G-1.  Based on its review and examination, and
      only as to the documents identified in such Initial Certification, the Trustee
      acknowledges that such documents appear regular on their face and relate to
      such
      Mortgage Loans.  The Trustee shall be under no duty or obligation to
      inspect, review or examine said documents, instruments, certificates or other
      papers to determine that the same are genuine, enforceable or appropriate for
      the represented purpose or that they have actually been recorded in the real
      estate records or that they are other than what they purport to be on their
      face.

     

    

    
      
        
          
          

        

        
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    By
      the
      thirtieth day after the Closing Date (or if that day is not a Business Day,
      the
      succeeding Business Day), the Trustee shall deliver to the Depositor, the
      Servicer, and the Seller a Delay Delivery Certification with respect to the
      Mortgage Loans substantially in the form of Exhibit G-2, with any applicable
      exceptions noted thereon.

     

    By
      the
      ninetieth day after the Closing Date (or if that day is not a Business Day,
      the
      succeeding Business Day), the Trustee shall deliver to the Depositor, the
      Servicer and the Seller a Final Certification with respect to the Mortgage
      Loans
      in the form of Exhibit H, with any applicable exceptions noted
      thereon.

     

    If,
      in
      the course of its review, the Trustee finds any document constituting a part
      of
      a Mortgage File that does not meet the requirements of Section 2.01, the Trustee
      shall list such as an exception in the Final Certification.  The
      Trustee shall not make any determination as to whether (i) any endorsement
      is
      sufficient to transfer all interest of the party so endorsing, as noteholder
      or
      assignee thereof, in that Mortgage Note or (ii) any assignment is in recordable
      form or is sufficient to effect the assignment of and transfer to the assignee
      thereof under the mortgage to which the assignment relates.  The
      Seller shall promptly correct any defect that materially and adversely affects
      the interests of the Certificateholders within 90 days from the date it was
      so
      notified of the defect and, if the Seller does not correct the defect within
      that period, the Seller shall either (a) substitute for the related Mortgage
      Loan a Substitute Mortgage Loan, which substitution shall be accomplished in
      the
      pursuant Section 2.03, or (b) purchase the Mortgage Loan at its Purchase Price
      from the Trustee within 90 days from the date the Seller was notified of the
      defect in writing.

     

    If
      a
      substitution or purchase of a Mortgage Loan pursuant to this provision is
      required because of a delay in delivery of any documents by the appropriate
      recording office, or there is a dispute between either the Servicer or the
      Seller and the Trustee over the location or status of the recorded document,
      then the substitution or purchase shall occur within 720 days from the Closing
      Date.  In no other case may a substitution or purchase occur more than
      540 days from the Closing Date.

     

    Any
      substitution pursuant to (a) above or purchase pursuant to (b) above shall
      not
      be effected before the delivery to the Trustee of the Opinion of Counsel, if
      required by Section 2.05, and any substitution pursuant to (a) above shall
      not
      be effected before the additional delivery to the Trustee of a Request for
      Release substantially in the form of Exhibit N.  No substitution is
      permitted to be made in any calendar month after the Determination Date for
      the
      month.

     

    The
      Purchase Price for any Mortgage Loan shall be deposited by the Seller in the
      Certificate Account by the Distribution Account Deposit Date for the
      Distribution Date in the month following the month of repurchase and, upon
      receipt of the deposit and certification with respect thereto in the form of
      Exhibit N, the Trustee shall release the related Mortgage File to the Seller
      and
      shall execute and deliver at the Seller’s request any instruments of transfer or
      assignment prepared by the Seller, in each case without recourse, necessary
      to
      vest in the Seller, or a designee, the Trustee’s interest in any Mortgage Loan
      released pursuant hereto.

     

    If
      pursuant to the foregoing provisions the Seller repurchases a Mortgage Loan
      that
      is a MERS Mortgage Loan, the Servicer shall either (i) cause MERS to execute
      and
      deliver an assignment of the Mortgage in recordable form to transfer the
      Mortgage from MERS to the Seller and shall cause such Mortgage to be removed
      from registration on the MERS® System in accordance with MERS’ rules and
      regulations or (ii) cause MERS to designate on the MERS® System the Seller as
      the beneficial holder of such Mortgage Loan.

     

    

    
      
        
          
          

        

        
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    The
      Trustee shall retain possession and custody of each Mortgage File in accordance
      with and subject to the terms and conditions set forth herein.  The
      Servicer shall promptly deliver to the Trustee, upon the execution or receipt
      thereof, the originals of any other documents or instruments constituting the
      Mortgage File that come into the possession of the Servicer from time to
      time.

     

    The
      obligation of the Seller to substitute for or to purchase any Mortgage Loan
      that
      does not meet the requirements of Section 2.01 shall constitute the sole remedy
      respecting the defect available to the Trustee, the Depositor, and any
      Certificateholder against the Seller.

     

    Section
      2.03                                Representations,
      Warranties, and Covenants of the Seller and the
      Servicer.

     

    (a)  IndyMac,
      in its capacities as Seller and Servicer, makes the representations and
      warranties in Schedule II, and by this reference incorporated in this Agreement,
      to the Depositor and the Trustee, as of the Closing Date.

     

    (b)  The
      Seller, in its capacity as Seller, makes the representations and warranties
      in
      Schedule III, and by this reference incorporated in this Agreement, to the
      Depositor and the Trustee, as of the Closing Date, or if so specified in
      Schedule III, as of the Cut-off Date.

     

    (c)  Upon
      discovery by any of the parties hereto of a breach of a representation or
      warranty made pursuant to Section 2.03(b) that materially and adversely affects
      the interests of the Certificateholders in any Mortgage Loan, the party
      discovering such breach shall give prompt notice thereof to the other
      parties.  Any breach of representations and warranties under clauses
      (27) and (32) of Schedule III shall be deemed to materially and adversely affect
      the interests of the Certificateholders in the affected Mortgage
      Loans.  The Seller covenants that within 90 days of the earlier of its
      discovery or its receipt of written notice from any party of a breach of any
      representation or warranty made pursuant to Section 2.03(b) which materially
      and
      adversely affects the interests of the Certificateholders in any Mortgage Loan,
      it shall cure such breach in all material respects, and if such breach is not
      so
      cured, shall, (i) if the 90-day period expires before the second anniversary
      of
      the Closing Date, remove the Mortgage Loan (a “Deleted Mortgage Loan”) from the
      Trust Fund and substitute in its place a Substitute Mortgage Loan, in accordance
      with this Section 2.03; or (ii) repurchase the affected Mortgage Loan or
      Mortgage Loans from the Trustee at the Purchase Price in the manner set forth
      below.  Any substitution pursuant to (i) above shall not be effected
      before the delivery to the Trustee of the Opinion of Counsel, if required by
      Section 2.05, and a Request for Release substantially in the form of Exhibit
      N,
      and the Mortgage File for any Substitute Mortgage Loan.  The Seller
      shall promptly reimburse the Servicer and the Trustee for any expenses
      reasonably incurred by the Servicer or the Trustee in respect of enforcing
      the
      remedies for the breach.

     

    With
      respect to any Substitute Mortgage Loan or Loans, the Seller shall deliver
      to
      the Trustee for the benefit of the Certificateholders the Mortgage Note, the
      Mortgage, the related assignment of the Mortgage, and such other documents
      and
      agreements as are required by Section 2.01, with the Mortgage Note endorsed
      and
      the Mortgage assigned as required by Section 2.01.  No substitution is
      permitted to be made in any calendar month after the Determination Date for
      such
      month.  Scheduled Payments due with respect to Substitute Mortgage
      Loans in the month of substitution shall not be part of the Trust Fund and
      will
      be retained by the Seller on the next succeeding Distribution
      Date.  For the month of substitution, distributions to
      Certificateholders will include the monthly payment due on any Deleted Mortgage
      Loan for such month and thereafter the Seller shall be entitled to retain all
      amounts received in respect of such Deleted Mortgage Loan.

     

    

    
      
        
          
          

        

        
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    The
      Servicer shall amend the Mortgage Loan Schedule for the benefit of the
      Certificateholders to reflect the removal of the Deleted Mortgage Loan and
      the
      substitution of the Substitute Mortgage Loans and the Servicer shall deliver
      the
      amended Mortgage Loan Schedule to the Trustee.  Upon the substitution,
      the Substitute Mortgage Loans shall be subject to this Agreement in all
      respects, and the Seller shall be deemed to have made with respect to the
      Substitute Mortgage Loans, as of the date of substitution, the representations
      and warranties made pursuant to Section 2.03(b) with respect to the Mortgage
      Loan.  Upon any substitution and the deposit to the Certificate
      Account of the amount required to be deposited therein in connection with the
      substitution as described in the following paragraph, the Trustee shall release
      the Mortgage File held for the benefit of the Certificateholders relating to
      the
      Deleted Mortgage Loan to the Seller and shall execute and deliver at the
      Seller’s direction such instruments of transfer or assignment prepared by the
      Seller, in each case without recourse, as shall be necessary to vest title
      in
      the Seller, or its designee, the Trustee’s interest in any Deleted Mortgage Loan
      substituted for pursuant to this Section 2.03.

     

    For
      any
      month in which the Seller substitutes one or more Substitute Mortgage Loans
      for
      one or more Deleted Mortgage Loans, the Servicer will determine the amount
      (if
      any) by which the aggregate principal balance of all such Substitute Mortgage
      Loans as of the date of substitution is less than the aggregate Stated Principal
      Balance of all such Deleted Mortgage Loans (after application of the scheduled
      principal portion of the monthly payments due in the month of
      substitution).  The amount of such shortage (the
“Substitution Adjustment Amount”) plus, if the Seller
      is not the Servicer, an amount equal to the aggregate of any unreimbursed
      Advances and Servicer Advances with respect to such Deleted Mortgage Loans
      shall
      be deposited into the Certificate Account by the Seller by the Distribution
      Account Deposit Date for the Distribution Date in the month succeeding the
      calendar month during which the related Mortgage Loan became required to be
      purchased or replaced hereunder.  If the Seller repurchases a Mortgage
      Loan, the Purchase Price therefor shall be deposited in the Certificate Account
      pursuant to Section 3.06 by the Distribution Account Deposit Date for the
      Distribution Date in the month following the month during which the Seller
      became obligated hereunder to repurchase or replace the Mortgage Loan and upon
      such deposit of the Purchase Price and receipt of a Request for Release in
      the
      form of Exhibit N, the Trustee shall release the related Mortgage File held
      for
      the benefit of the Certificateholders to such Person, and the Trustee shall
      execute and deliver at such Person’s direction such instruments of transfer or
      assignment prepared by such Person, in each case without recourse, as shall
      be
      necessary to transfer title from the Trustee.  The obligation under
      this Agreement of any Person to cure, repurchase, or replace any Mortgage Loan
      as to which a breach has occurred and is continuing shall constitute the sole
      remedy against the Person respecting the breach available to Certificateholders,
      the Depositor, or the Trustee on their behalf.

     

    The
      representations and warranties made pursuant to this Section 2.03 shall survive
      delivery of the respective Mortgage Files to the Trustee for the benefit of
      the
      Certificateholders and shall not be waived by the Depositor.

     

    The
      Seller assigns to the Depositor and the Depositor assigns to the Trustee all
      rights the Seller might have under contracts with third parties relating to
      early payment defaults on the Mortgage Loans (“EPD
      Rights”) and the Servicer assumes any related duties as part of
      its servicing obligations.  Consistent with the Servicing Standard,
      the Servicer shall attempt to enforce the EPD rights.  If the
      Servicer’s enforcement of the EPD Rights obligates the Servicer to sell a
      Mortgage Loan to a third party, the Servicer shall repurchase the Mortgage
      Loan
      at the Purchase Price and sell the Mortgage Loan to the third party, provided
      however, in no case shall the Servicer be obligated to repurchase a Mortgage
      Loan on account of EPD Rights unless and until the Servicer shall have
      previously received repurchase payment from a third party.  The
      Servicer shall deposit into the Certificate Account all amounts received in
      connection with the enforcement of EPD Rights, not exceeding the Purchase Price,
      with respect to any Mortgage Loan.  Any amounts received by the
      Servicer with respect a Mortgage Loan in excess of the Purchase Price shall
      be
      retained by the Servicer as additional servicing compensation. The Trustee,
      upon
      receipt of certification from the Servicer of the deposit of the Purchase Price
      in connection with a repurchase of a Mortgage Loan and a Request for File
      Release from the Servicer, shall release or cause to be released to the
      purchaser of such Mortgage Loan the related Mortgage File and shall execute
      and
      deliver such instruments of transfer or assignment prepared by the purchaser
      of
      such Mortgage Loan, in each case without recourse, as shall be necessary to
      vest
      in the purchaser of such Mortgage Loan any Mortgage Loan released pursuant
      hereto and the purchaser of such Mortgage Loan shall succeed to all the
      Trustee’s right, title and interest in and to such Mortgage Loan and all
      security and documents related thereto.  Such assignment shall be an
      assignment outright and not for security.  The purchaser of such
      Mortgage Loan shall thereupon own such Mortgage Loan, and all security and
      documents, free of any further obligation to the Trustee or the
      Certificateholders with respect thereto.

     

    

    
      
        
          
          

        

        
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    Section
      2.04                                Representations
      and Warranties of the Depositor as to the Mortgage
      Loans.

     

    The
      Depositor represents and warrants to the Trustee with respect to each Mortgage
      Loan as of the date of this Agreement or such other date set forth in this
      Agreement that as of the Closing Date, and following the transfer of the
      Mortgage Loans to it by the Seller, the Depositor had good title to the Mortgage
      Loans and the Mortgage Notes were subject to no offsets, defenses, or
      counterclaims.

     

    The
      representations and warranties in this Section 2.04 shall survive delivery
      of
      the Mortgage Files to the Trustee.  Upon discovery by the Depositor or
      the Trustee of any breach of any of the representations and warranties in this
      Section that materially and adversely affects the interest of the
      Certificateholders, the party discovering the breach shall give prompt written
      notice to the others and to each Rating Agency.

     

    Section
      2.05                                Delivery
      of Opinion of Counsel in Connection with
      Substitutions.

     

    (a)  Notwithstanding
      any contrary provision of this Agreement, no substitution pursuant to Section
      2.02 or 2.03 shall be made more than 90 days after the Closing Date unless
      the
      Seller delivers to the Trustee an Opinion of Counsel, which Opinion of Counsel
      shall not be at the expense of either the Trustee or the Trust Fund, addressed
      to the Trustee, to the effect that such substitution will not (i) result in
      the
      imposition of the tax on “prohibited transactions” on the Trust Fund or
      contributions after the Startup Date, as defined in sections 860F(a)(2) and
      860G(d) of the Code, respectively or (ii) cause any REMIC created under this
      Agreement to fail to qualify as a REMIC at any time that any Certificates are
      outstanding.

     

    (b)  Upon
      discovery by the Depositor, the Seller, the Servicer or the Trustee that any
      Mortgage Loan does not constitute a “qualified mortgage” within the meaning of
      section 860G(a)(3) of the Code, the party discovering such fact shall promptly
      (and in any event within five Business Days of discovery) give written notice
      thereof to the other parties.  In connection therewith, the Trustee
      shall require the Seller, at the Seller’s option, to either (i) substitute, if
      the conditions in Section 2.03(c) with respect to substitutions are satisfied,
      a
      Substitute Mortgage Loan for the affected Mortgage Loan, or (ii) repurchase
      the
      affected Mortgage Loan within 90 days of such discovery in the same manner
      as it
      would a Mortgage Loan for a breach of representation or warranty made pursuant
      to Section 2.03.  The Trustee shall reconvey to the Seller the
      Mortgage Loan to be released pursuant hereto in the same manner, and on the
      same
      terms and conditions, as it would a Mortgage Loan repurchased for breach of
      a
      representation or warranty contained in Section 2.03.

     

    

    
      
        
          
          

        

        
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    Section
      2.06                                Execution
      and Delivery of Certificates.

     

    The
      Trustee acknowledges the transfer and assignment to it of the Trust Fund and,
      concurrently with such transfer and assignment, has executed and delivered
      to or
      upon the order of the Depositor, the Certificates in authorized denominations
      evidencing directly or indirectly the entire ownership of the Trust
      Fund.  The Trustee agrees to hold the Trust Fund and exercise the
      rights referred to above for the benefit of all present and future Holders
      of
      the Certificates.

     

    Section
      2.07                                REMIC
      Matters.

     

    The
      Preliminary Statement sets forth the designations and “latest possible maturity
      date” for federal income tax purposes of all interests created under this
      Agreement.  The “Startup Day” for purposes of the REMIC Provisions
      shall be the Closing Date.  Each REMIC’s fiscal year shall be the
      calendar year.

     

    

     

    

    
      
        
          
          

        

        
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    ARTICLE
      THREE

     

    ADMINISTRATION
      AND
      SERVICING
      OF
      MORTGAGE
      LOANS

     

    Section
      3.01                                Servicer
      to Service Mortgage Loans.

     

    For
      and
      on behalf of the Certificateholders, the Servicer shall service and administer
      the Mortgage Loans in accordance with this Agreement and the Servicing
      Standard.

     

    The
      Servicer shall not make or permit any modification, waiver, or amendment of
      any
      term of any Mortgage Loan that would cause any REMIC created under this
      Agreement to fail to qualify as a REMIC or result in the imposition of any
      tax
      under section 860F(a) or section 860G(d) of the Code.

     

    Without
      limiting the generality of the foregoing, the Servicer, in its own name or
      in
      the name of the Depositor and the Trustee, is hereby authorized and empowered
      by
      the Depositor and the Trustee, when the Servicer believes it appropriate in
      its
      reasonable judgment, to execute and deliver, on behalf of the Trustee, the
      Depositor, the Certificateholders, or any of them, any instruments of
      satisfaction or cancellation, or of partial or full release or discharge, and
      all other comparable instruments, with respect to the Mortgage Loans, and with
      respect to the Mortgaged Properties held for the benefit of the
      Certificateholders.  The Servicer shall prepare and deliver to the
      Depositor or the Trustee any documents requiring execution and delivery by
      either or both of them appropriate to enable the Servicer to service and
      administer the Mortgage Loans to the extent that the Servicer is not permitted
      to execute and deliver such documents pursuant to the preceding
      sentence.  Upon receipt of the documents, the Depositor or the Trustee
      shall execute the documents and deliver them to the Servicer.

     

    The
      Servicer further is authorized and empowered by the Trustee, on behalf of the
      Certificateholders and the Trustee, in its own name, when the Servicer believes
      it appropriate in its best judgment to register any Mortgage Loan on the MERS®
System, or cause the removal from the registration of any Mortgage Loan on
      the
      MERS® System, to execute and deliver, on behalf of the Trustee and the
      Certificateholders or any of them, any and all instruments of assignment and
      other comparable instruments with respect to such assignment or re-recording
      of
      a Mortgage in the name of MERS, solely as nominee for the Trustee and its
      successors and assigns.

     

    In
      accordance with and to the extent of the Servicing Standard, the Servicer shall
      advance funds necessary to effect the payment of taxes and assessments on the
      Mortgaged Properties, which advances shall be reimbursable in the first instance
      from related collections from the Mortgagors pursuant to Section 3.07, and
      further as provided in Section 3.09.  The costs incurred by the
      Servicer in effecting the timely payments of taxes and assessments on the
      Mortgaged Properties and related insurance premiums shall not, for the purpose
      of calculating monthly distributions to the Certificateholders, be added to
      the
      Stated Principal Balances of the related Mortgage Loans, notwithstanding that
      the Mortgage Loans so permit.

     

    Nothing
      in this Agreement to the contrary shall limit the Servicer from undertaking
      any
      legal action that it may deem appropriate with respect to the Mortgage Loans
      including, without limitation, any rights or causes of action arising out of
      the
      origination of the Mortgage Loans.

     

    

    
      
        
          
          

        

        
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    Section
      3.02                                [Reserved].

     

    Section
      3.03                                Rights
      of the Depositor and the Trustee in Respect of the
      Servicer.

     

    The
      Depositor may, but is not obligated to, enforce the obligations of the Servicer
      under this Agreement and may, but is not obligated to, perform, or cause a
      designee to perform, any defaulted obligation of the Servicer under this
      Agreement and in connection with any such defaulted obligation to exercise
      the
      related rights of the Servicer under this Agreement; provided that the Servicer
      shall not be relieved of any of its obligations under this Agreement by virtue
      of such performance by the Depositor or its designee.  Neither the
      Trustee nor the Depositor shall have any responsibility or liability for any
      action or failure to act by the Servicer nor shall the Trustee or the Depositor
      be obligated to supervise the performance of the Servicer under this Agreement
      or otherwise.

     

    Section
      3.04                                [Reserved].

     

    Section
      3.05                                Trustee
      to Act as Servicer.

     

    If
      the
      Servicer for any reason is no longer the Servicer under this Agreement
      (including because of the occurrence or existence of an Event of Default or
      termination by the Depositor), the Trustee or its successor shall assume all
      of
      the rights and obligations of the Servicer under this Agreement arising
      thereafter (except that the Trustee shall not be

     

    (i)           liable
      for losses of the Servicer pursuant to Section 3.10 or any acts or omissions
      of
      the predecessor Servicer hereunder,

     

    (ii)           obligated
      to make Advances if it is prohibited from doing so by applicable
      law,

     

    (iii)           obligated
      to effectuate repurchases or substitutions of Mortgage Loans hereunder,
      including repurchases or substitutions pursuant to Section 2.02 or
      2.03,

     

    (iv)           responsible
      for expenses of the Servicer pursuant to Section 2.03, or

     

    (v)           deemed
      to have made any representations and warranties of the Servicer
      hereunder).  Any assumption shall be subject to Section
      7.02.

     

    Notwithstanding
      anything else in this Agreement to the contrary, in no event shall the Trustee
      be liable for any servicing fee or for any differential in the amount of the
      Servicing Fee paid under this Agreement and the amount necessary to induce
      any
      successor Servicer to act as successor Servicer under this Agreement and the
      transactions provided for in this Agreement.

     

    Section
      3.06                                Collection
      of Mortgage Loan Payments; Certificate Account; Distribution
      Account.

     

    (a)  In
      accordance with and to the extent of the Servicing Standard, the Servicer shall
      make reasonable efforts in accordance with the customary and usual standards
      of
      practice of prudent mortgage servicers to collect all payments called for under
      the Mortgage Loans to the extent the procedures are consistent with this
      Agreement and any related Required Insurance Policy.  Consistent with
      the foregoing, the Servicer may in its discretion (i) subject to Section 3.21,
      waive any Late Payment Fee or, subject to Section 3.20, waive any Prepayment
      Charge in connection with the prepayment of a Mortgage Loan and (ii) extend
      the
      due dates for payments due on a Delinquent Mortgage Loan for a period not
      greater than 125 days.  In connection with a seriously delinquent or
      defaulted Mortgage Loan, the Servicer may, consistent with the Servicing
      Standard, waive, modify or vary any term of that Mortgage Loan (including
      modifications  that change the Mortgage Rate, forgive the payment of
      principal or interest or extend the final maturity date of that Mortgage Loan
      ),
      accept payment from the related Mortgagor of an amount less than the Stated
      Principal Balance in final satisfaction of that Mortgage Loan, or consent to
      the
      postponement of strict compliance with any such term or otherwise grant
      indulgence to any Mortgagor if in the Servicer’s determination such waiver,
      modification, postponement or indulgence is not materially adverse to the
      interests of the Certificateholders (taking into account any estimated loss
      that
      might result absent such action) and is expected to minimize the loss on such
      Mortgage Loan; provided, however, the Servicer shall not initiate new lending
      to
      such Mortgagor through the Trust and cannot, except as provided in the
      immediately succeeding sentence, extend the maturity of any Mortgage Loan past
      the date on which the final payment is due on the latest maturing Mortgage
      Loan
      as of the Cut-off Date.  With respect to no more than 5% of the
      Mortgage Loans (measured by aggregate Cut-off Date Principal Balance of the
      Mortgage Loans), the Servicer may extend the maturity of a Mortgage Loan past
      the date on which the final payment is due on the latest maturing Mortgage
      Loan
      as of the Cut-off Date, but in no event more than one year past such date.
      In
      the event of any such arrangement, the Servicer shall make Advances on the
      related Mortgage Loan in accordance with Section 4.01 during the scheduled
      period in accordance with the amortization schedule of the Mortgage Loan without
      modification thereof because of the arrangements.  The Servicer shall
      not be required to institute or join in litigation with respect to collection
      of
      any payment (whether under a Mortgage, Mortgage Note, or otherwise or against
      any public or governmental authority with respect to a taking or condemnation)
      if it reasonably believes that enforcing the provision of the Mortgage or other
      instrument pursuant to which the payment is required is prohibited by applicable
      law.  The Servicer shall not have the discretion to sell any
      Delinquent or defaulted Mortgage Loan.

     

    

    
      
        
          
          

        

        
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    (b)  [Reserved.]

     

    (c)  [Reserved.]

     

    (d)  The
      Servicer shall establish and maintain a Certificate Account into which the
      Servicer shall deposit within two Business Days of receipt or as otherwise
      specified in this Agreement, the following payments and collections received
      by
      it in respect of Mortgage Loans after the Cut-off Date (other than in respect
      of
      principal and interest due on the Mortgage Loans by the Cut-off Date) and the
      following amounts required to be deposited hereunder:

     

    (i)           all
      payments on account of principal on the Mortgage Loans, including Principal
      Prepayments;

     

    (ii)           all
      payments on account of interest on the Mortgage Loans, net of Prepayment
      Interest Excess and the Servicing Fee;

     

    (iii)           all
      Insurance Proceeds, Subsequent Recoveries and Liquidation Proceeds, other than
      proceeds to be applied to the restoration or repair of the Mortgaged Property
      or
      released to the Mortgagor in accordance with the Servicer’s normal servicing
      procedures;

     

    (iv)           any
      amount required to be deposited by the Servicer pursuant to Section 3.06(f)
      in
      connection with any losses on Permitted Investments;

     

    (v)           any
      amounts required to be deposited by the Servicer pursuant to Sections 3.10
      and
      3.12;

     

    

    
      
        
          
          

        

        
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    (vi)           all
      Purchase Prices from the Servicer or Seller and all Substitution Adjustment
      Amounts;

     

    (vii)           all
      Advances made by the Servicer pursuant to Section 4.01;

     

    (viii)           any
      other amounts required to be deposited under this Agreement; and

     

    (ix)           all
      Prepayment Charges collected and amounts payable by the Servicer for the waiver
      of such amounts.

     

    In
      addition, with respect to any Mortgage Loan that is subject to a buydown
      agreement, on each Due Date for the Mortgage Loan, in addition to the monthly
      payment remitted by the Mortgagor, the Servicer shall cause funds to be
      deposited into the Certificate Account in an amount required to cause an amount
      of interest to be paid with respect to the Mortgage Loan equal to the amount
      of
      interest that has accrued on the Mortgage Loan from the preceding Due Date
      at
      the Mortgage Rate net of the Servicing Fee Rate on that date.

     

    The
      foregoing requirements for remittance by the Servicer to the Certificate Account
      shall be exclusive, it being understood and agreed that, without limiting the
      generality of the foregoing, payments in the nature of assumption fees, if
      collected, need not be remitted by the Servicer.  If the Servicer
      remits any amount not required to be remitted, it may at any time withdraw
      that
      amount from the Certificate Account, any provision in this Agreement to the
      contrary notwithstanding.  The withdrawal or direction may be
      accomplished by delivering written notice of it to the Trustee or any other
      institution maintaining the Certificate Account that describes the amounts
      deposited in error in the Certificate Account.  The Servicer shall
      maintain adequate records with respect to all withdrawals made pursuant to
      this
      Section 3.06.  All funds deposited in the Certificate Account shall be
      held in trust for the Certificateholders until withdrawn in accordance with
      Section 3.09.

     

    (e)  The
      Trustee shall establish and maintain the Distribution Account on behalf of
      the
      Certificateholders.  The Trustee shall, promptly upon receipt, deposit
      in the Distribution Account and retain in the Distribution Account the
      following:

     

    (i)           the
      aggregate amount remitted by the Servicer to the Trustee pursuant to Section
      3.09(a);

     

    (ii)           any
      amount deposited by the Servicer pursuant to Section 3.06(f) in connection
      with
      any losses on Permitted Investments; and

     

    (iii)           any
      other amounts deposited under this Agreement that are required to be deposited
      in the Distribution Account.

     

    If
      the
      Servicer remits any amount not required to be remitted, it may at any time
      direct the Trustee in writing to withdraw that amount from the Distribution
      Account, any provision in this Agreement to the contrary
      notwithstanding.  The direction may be accomplished by delivering an
      Officer’s Certificate to the Trustee that describes the amounts deposited in
      error in the Distribution Account.  All funds deposited in the
      Distribution Account shall be held by the Trustee in trust for the
      Certificateholders until disbursed in accordance with this Agreement or
      withdrawn in accordance with Section 3.09.  In no event shall the
      Trustee incur liability for withdrawals from the Distribution Account at the
      direction of the Servicer.

     

    

    
      
        
          
          

        

        
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    (f)  Each
      institution at which the Certificate Account is maintained shall invest the
      funds in such account as directed in writing by the Servicer in Permitted
      Investments, which shall mature not later than the second Business Day preceding
      the related Distribution Account Deposit Date (except that if the Permitted
      Investment is an obligation of the institution that maintains the account,
      then
      the Permitted Investment shall mature not later than the Business Day preceding
      the Distribution Account Deposit Date) and which shall not be sold or disposed
      of before its maturity.  The funds in the Distribution Account shall
      remain uninvested.  All such Permitted Investments shall be made in
      the name of the Trustee, for the benefit of the
      Certificateholders.  All income realized from any such investment of
      funds on deposit in the Certificate Account shall be for the benefit of the
      Servicer as servicing compensation and shall be remitted to it monthly as
      provided in this Agreement.  The amount of any realized losses on
      Permitted Investments in the Certificate Account shall promptly be deposited
      by
      the Servicer in the Certificate Account.  The Trustee shall not be
      liable for the amount of any loss incurred in respect of any investment or
      lack
      of investment of funds held in the Certificate Account and made in accordance
      with this Section 3.06.

     

    (g)  The
      Servicer shall give notice to the Trustee, the Seller, each Rating Agency and
      the Depositor of any proposed change of the location of the Certificate Account
      not later than 30 days and not more than 45 days prior to any change of this
      Agreement.  The Trustee shall give notice to the Servicer, the Seller,
      each Rating Agency and the Depositor of any proposed change of the location
      of
      the Distribution Account not later than 30 days and not more than 45 days prior
      to any change of this Agreement.

     

    (h)  Upon
      a downgrade in the rating of an institution at which an Eligible Account is
      held
      below the required ratings set forth in the definition of Eligible Account,
      within 30 days of such downgrade, such account will be transferred to an account
      meeting the requirements of the definition of Eligible Account; provided,
      however, that this transfer requirement may be waived by the applicable Rating
      Agency.

     

    Section
      3.07                                Collection
      of Taxes, Assessments and Similar Items; Escrow
      Accounts.

     

    (a)  To
      the extent required by the related Mortgage Note and not violative of current
      law, the Servicer shall establish and maintain one or more accounts (each,
      an
“Escrow Account”) and deposit and retain therein all collections from the
      Mortgagors (or advances) for the payment of taxes, assessments, hazard insurance
      premiums or comparable items for the account of the
      Mortgagors.  Nothing herein shall require the Servicer to compel a
      Mortgagor to establish an Escrow Account in violation of applicable
      law.

     

    (b)  Withdrawals
      of amounts so collected from the Escrow Accounts may be made only to effect
      timely payment of taxes, assessments, hazard insurance premiums, condominium
      or
      PUD association dues, or comparable items, to reimburse (without duplication)
      the Servicer out of related collections for any payments made pursuant to
      Section 3.01 (with respect to taxes and assessments and insurance premiums)
      and
      Section 3.10 (with respect to hazard insurance), to refund to any Mortgagors
      any
      sums determined to be overages, to pay interest, if required by law or the
      related Mortgage or Mortgage Note, to Mortgagors on balances in the Escrow
      Account or to clear and terminate the Escrow Account at the termination of
      this
      Agreement in accordance with Section 9.01.  The Escrow Accounts shall
      not be a part of the Trust Fund.

     

    (c)  The
      Servicer shall advance any payments referred to in Section 3.07(a) that are
      not
      timely paid by the Mortgagors or advanced by the Servicer on the date when
      the
      tax, premium or other cost for which such payment is intended is due, but the
      Servicer shall be required so to advance only to the extent that such advances,
      in the good faith judgment of the Servicer, will be recoverable by the Servicer
      out of Insurance Proceeds, Liquidation Proceeds or otherwise.

     

    

    
      
        
          
          

        

        
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    Section
      3.08                                Access
      to Certain Documentation and Information Regarding the Mortgage
      Loans.

     

    The
      Servicer shall afford the Depositor and the Trustee reasonable access to all
      records and documentation regarding the Mortgage Loans and all accounts,
      insurance information and other matters relating to this Agreement, such access
      being afforded without charge, but only upon reasonable request and during
      normal business hours at the office designated by the Servicer.

     

    Upon
      reasonable advance notice in writing, the Servicer will provide to each
      Certificateholder or Certificate Owner that is a savings and loan association,
      bank, or insurance company certain reports and reasonable access to information
      and documentation regarding the Mortgage Loans sufficient to permit the
      Certificateholder or Certificate Owner to comply with applicable regulations
      of
      the OTS or other regulatory authorities with respect to investment in the
      Certificates.  The Servicer shall be entitled to be reimbursed by each
      such Certificateholder or Certificate Owner for actual expenses incurred by
      the
      Servicer in providing the reports and access.

     

    Section
      3.09                                Permitted
      Withdrawals from the Certificate Account and the Distribution
      Account.

     

    (a)  The
      Servicer may (and, in the case of clause (ix) below, shall) from time to time
      make withdrawals from the Certificate Account for the following
      purposes:

     

    (i)           to
      pay to the Servicer (to the extent not previously retained) the servicing
      compensation to which it is entitled pursuant to Section 3.15, and to pay to
      the
      Servicer, as additional servicing compensation, earnings on or investment income
      with respect to funds in or credited to the Certificate Account;

     

    (ii)           to
      reimburse the Servicer or successor Servicer for the unreimbursed Advances
      made
      by it, such right of reimbursement pursuant to this subclause (ii) being limited
      to amounts received on the Mortgage Loans in respect of which the Advance was
      made;

     

    (iii)           to
      reimburse the Servicer or successor Servicer for any Nonrecoverable Advance
      previously made by it;

     

    (iv)           to
      reimburse the Servicer for Insured Expenses from the related Insurance
      Proceeds;

     

    (v)           to
      reimburse the Servicer for (a) unreimbursed Servicing Advances, the Servicer’s
      right to reimbursement pursuant to this clause (a) with respect to any Mortgage
      Loan being limited to amounts received on the Mortgage Loans that represent
      late
      recoveries of the payments for which the advances were made pursuant to Section
      3.01 or Section 3.07, (b) unreimbursed Servicing Advances made in respect of
      a
      Mortgage Loan for which such Servicing Advances are not recoverable from the
      Mortgagor and (c) for unpaid Servicing Fees as provided in Section
      3.12;

     

    (vi)           to
      pay to the purchaser, with respect to each Mortgage Loan or property acquired
      in
      respect of such Mortgage Loan that has been purchased pursuant to Section 2.02,
      2.03, or 3.12, all amounts received thereon after the date of such
      purchase;

     

    (vii)           to
      reimburse the Seller, the Servicer, or the Depositor for expenses incurred
      by
      any of them and reimbursable pursuant to Section 6.03;

     

    

    
      
        
          
          

        

        
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    (viii)           to
      withdraw any amount deposited in the Certificate Account and not required to
      be
      deposited in the Certificate Account;

     

    (ix)           by
      the Distribution Account Deposit Date, to withdraw (1) the Available Funds
      and
      the Trustee Fee for the Distribution Date, to the extent on deposit and (2)
      the
      Prepayment Charges on deposit and remit such amount to the Trustee for deposit
      in the Distribution Account; and

     

    (x)           to
      clear and terminate the Certificate Account upon termination of this Agreement
      pursuant to Section 9.01.

     

    The
      Servicer shall keep and maintain separate accounting, on a Mortgage Loan by
      Mortgage Loan basis, to justify any withdrawal from the Certificate Account
      pursuant to subclauses (i), (ii), (iv), (v), and (vi).  Before making
      any withdrawal from the Certificate Account pursuant to subclause (iii), the
      Servicer shall deliver to the Trustee an Officer’s Certificate of a Servicing
      Officer indicating the amount of any previous Advance determined by the Servicer
      to be a Nonrecoverable Advance and identifying the related Mortgage Loans and
      their respective portions of the Nonrecoverable Advance.

     

    In
      addition to the amounts remitted to the Trustee by the Servicer from the
      Certificate Account, by the Distribution Account Deposit Date, the Servicer
      shall remit all Late Payment Fees assessable and not waived pursuant to Section
      3.21(a) to the Trustee for deposit in the Distribution Account.

     

    (b)   The
      Trustee shall withdraw funds from the Distribution Account for distributions
      to
      Certificateholders in the manner specified in this Agreement (and to withhold
      from the amounts so withdrawn the amount of any taxes that it is authorized
      to
      withhold pursuant to the third paragraph of Section 8.11).  In
      addition, the Trustee may from time to time make withdrawals from the
      Distribution Account for the following purposes:

     

    (i)           to
      pay to itself the Trustee Fee for the related Distribution Date;

     

    (ii)           to
      withdraw and return to the Servicer any amount deposited in the Distribution
      Account and not required to be deposited therein; and

     

    (iii)           to
      clear and terminate the Distribution Account upon termination of the Agreement
      pursuant to Section 9.01.

     

    Section
      3.10                                Maintenance
      of Hazard Insurance; Maintenance of Primary Insurance
      Policies.

     

    (a)  The
      Servicer shall maintain, for each Mortgage Loan, hazard insurance with extended
      coverage in an amount that is at least equal to the lesser of

     

    (i)           the
      maximum insurable value of the improvements securing the Mortgage Loan
      and

     

    (ii)           the
      greater of (y) the outstanding principal balance of the Mortgage Loan and (z)
      an
      amount such that the proceeds of the policy are sufficient to prevent the
      Mortgagor or the mortgagee from becoming a co-insurer.

     

    Each
      policy of standard hazard insurance shall contain, or have an accompanying
      endorsement that contains, a standard mortgagee clause.  Any amounts
      collected under the policies (other than the amounts to be applied to the
      restoration or repair of the related Mortgaged Property or amounts released
      to
      the Mortgagor in accordance with the Servicer’s normal servicing procedures)
      shall be deposited in the Certificate Account.  Any cost incurred in
      maintaining any insurance shall not, for the purpose of calculating monthly
      distributions to the Certificateholders or remittances to the Trustee for their
      benefit, be added to the principal balance of the Mortgage Loan, notwithstanding
      that the Mortgage Loan so permits.  Such costs shall be recoverable by
      the Servicer out of late payments (other than Late Payment Fees) by the related
      Mortgagor or out of Liquidation Proceeds to the extent permitted by Section
      3.09.  No earthquake or other additional insurance is to be required
      of any Mortgagor or maintained on property acquired in respect of a Mortgage
      other than pursuant to any applicable laws and regulations in force that require
      additional insurance.  If the Mortgaged Property is located at the
      time of origination of the Mortgage Loan in a federally designated special
      flood
      hazard area and the area is participating in the national flood insurance
      program, the Servicer shall maintain flood insurance for the Mortgage
      Loan.  The flood insurance shall be in an amount equal to the least of
      (i) the original principal balance of the related Mortgage Loan, (ii) the
      replacement value of the improvements that are part of the Mortgaged Property,
      and (iii) the maximum amount of flood insurance available for the related
      Mortgaged Property under the national flood insurance program.

     

    

    
      
        
          
          

        

        
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    If
      the
      Servicer obtains and maintains a blanket policy insuring against hazard losses
      on all of the Mortgage Loans, it shall have satisfied its obligations in the
      first sentence of this Section 3.10.  The policy may contain a
      deductible clause on terms substantially equivalent to those commercially
      available and maintained by comparable servicers.  If the policy
      contains a deductible clause and a policy complying with the first sentence
      of
      this Section 3.10 has not been maintained on the related Mortgaged Property,
      and
      if a loss that would have been covered by the required policy occurs, the
      Servicer shall deposit in the Certificate Account, without any right of
      reimbursement, the amount not otherwise payable under the blanket policy because
      of the deductible clause.  In connection with its activities as
      Servicer of the Mortgage Loans, the Servicer agrees to present, on behalf of
      itself, the Depositor, and the Trustee for the benefit of the
      Certificateholders, claims under any blanket policy.

     

    (b)  The
      Servicer shall not take any action that would result in non-coverage under
      any
      applicable Primary Insurance Policy of any loss that, but for the actions of
      the
      Servicer, would have been covered thereunder.  The Servicer shall not
      cancel or refuse to renew any Primary Insurance Policy that is in effect at
      the
      date of the initial issuance of the Certificates and is required to be kept
      in
      force hereunder unless the replacement Primary Insurance Policy for the canceled
      or non-renewed policy is maintained with a Qualified Insurer.  The
      Servicer need not maintain any Primary Insurance Policy if maintaining the
      Primary Insurance Policy is prohibited by applicable law.  The
      Servicer agrees, to the extent permitted by applicable law, to effect the timely
      payment of the premiums on each Primary Insurance Policy, and any costs not
      otherwise recoverable shall be recoverable by the Servicer from the related
      liquidation proceeds.

     

    In
      connection with its activities as Servicer of the Mortgage Loans, the Servicer
      agrees to present, on behalf of itself, the Trustee and the Certificateholders,
      claims to the insurer under any Primary Insurance Policies and, in this regard,
      to take any reasonable action in accordance with the Servicing Standard
      necessary to permit recovery under any Primary Insurance Policies respecting
      defaulted Mortgage Loans.  Any amounts collected by the Servicer under
      any Primary Insurance Policies shall be deposited in the Certificate
      Account.

     

    Section
      3.11                                Enforcement
      of Due-On-Sale Clauses; Assumption Agreements.

     

    (a)  Except
      as otherwise provided in this Section 3.11, when any property subject to a
      Mortgage has been conveyed by the Mortgagor, the Servicer shall to the extent
      that it has knowledge of the conveyance and in accordance with the Servicing
      Standard, enforce any due-on-sale clause contained in any Mortgage Note or
      Mortgage, to the extent permitted under applicable law and governmental
      regulations, but only to the extent that enforcement will not adversely affect
      or jeopardize coverage under any Required Insurance
      Policy.  Notwithstanding the foregoing, the Servicer is not required
      to exercise these rights with respect to a Mortgage Loan if the Person to whom
      the related Mortgaged Property has been conveyed or is proposed to be conveyed
      satisfies the conditions contained in the Mortgage Note and Mortgage related
      thereto and the consent of the mortgagee under the Mortgage Note or Mortgage
      is
      not otherwise so required under the Mortgage Note or Mortgage as a condition
      to
      the transfer.

     

    

    
      
        
          
          

        

        
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    If
      (i)
      the Servicer is prohibited by law from enforcing any due-on-sale clause, (ii)
      coverage under any Required Insurance Policy would be adversely affected, (iii)
      the Mortgage Note does not include a due-on-sale clause, or (iv) nonenforcement
      is otherwise permitted hereunder, the Servicer is authorized, subject to Section
      3.11(b), to take or enter into an assumption and modification agreement from
      or
      with the person to whom the property has been or is about to be conveyed,
      pursuant to which the person becomes liable under the Mortgage Note and, unless
      prohibited by applicable state law, the Mortgagor remains liable
      thereon.  The Mortgage Loan must continue to be covered (if so covered
      before the Servicer enters into the agreement) by the applicable Required
      Insurance Policies.

     

    The
      Servicer, subject to Section 3.11(b), is also authorized with the prior approval
      of the insurers under any Required Insurance Policies to enter into a
      substitution of liability agreement with the Person, pursuant to which the
      original Mortgagor is released from liability and the Person is substituted
      as
      Mortgagor and becomes liable under the Mortgage Note.  Notwithstanding
      the foregoing, the Servicer shall not be deemed to be in default under this
      Section 3.11 because of any transfer or assumption that the Servicer reasonably
      believes it is restricted by law from preventing, for any reason
      whatsoever.

     

    (b)  Subject
      to the Servicer’s duty to enforce any due-on-sale clause to the extent set forth
      in Section 3.11(a), in any case in which a Mortgaged Property has been conveyed
      to a Person by a Mortgagor, and the Person is to enter into an assumption
      agreement or modification agreement or supplement to the Mortgage Note or
      Mortgage that requires the signature of the Trustee, or if an instrument of
      release signed by the Trustee is required releasing the Mortgagor from liability
      on the Mortgage Loan, the Servicer shall prepare and deliver to the Trustee
      for
      signature and shall direct the Trustee, in writing, to execute the assumption
      agreement with the Person to whom the Mortgaged Property is to be conveyed,
      and
      the modification agreement or supplement to the Mortgage Note or Mortgage or
      other instruments appropriate to carry out the terms of the Mortgage Note or
      Mortgage or otherwise to comply with any applicable laws regarding assumptions
      or the transfer of the Mortgaged Property to the Person.  In
      connection with any such assumption, no material term of the Mortgage Note
      may
      be changed.

     

    In
      addition, the substitute Mortgagor and the Mortgaged Property must be acceptable
      to the Servicer in accordance with its underwriting standards as then in
      effect.  Together with each substitution, assumption, or other
      agreement or instrument delivered to the Trustee for execution by it, the
      Servicer shall deliver an Officer’s Certificate signed by a Servicing Officer
      stating that the requirements of this subsection have been met in connection
      with such Officer’s Certificate.  The Servicer shall notify the
      Trustee that any substitution or assumption agreement has been completed by
      forwarding to the Trustee the original of the substitution or assumption
      agreement, which in the case of the original shall be added to the related
      Mortgage File and shall, for all purposes, be considered a part of the Mortgage
      File to the same extent as all other documents and instruments constituting
      a
      part of the Mortgage File.  The Servicer will retain any fee collected
      by it for entering into an assumption or substitution of liability agreement
      as
      additional servicing compensation.

     

    Section
      3.12                                Realization
      Upon Defaulted Mortgage Loans.

     

    The
      Servicer shall use reasonable efforts in accordance with the Servicing Standard
      to foreclose on or otherwise comparably convert the ownership of assets securing
      such of the Mortgage Loans as come into and continue in default and as to which
      no satisfactory arrangements can be made for collection of delinquent
      payments.  In connection with the foreclosure or other conversion, the
      Servicer shall follow the Servicing Standard and shall follow the requirements
      of the insurer under any Required Insurance Policy.  The Servicer
      shall not be required to expend its own funds in connection with any foreclosure
      or towards the restoration of any property unless it determines (i) that the
      restoration or foreclosure will increase the proceeds of liquidation of the
      Mortgage Loan after reimbursement to itself of restoration expenses and (ii)
      that restoration expenses will be recoverable to it through Liquidation Proceeds
      (respecting which it shall have priority for purposes of withdrawals from the
      Certificate Account).  The Servicer shall be responsible for all other
      costs and expenses incurred by it in any foreclosure proceedings.  The
      Servicer is entitled to reimbursement of such costs and expenses from the
      liquidation proceeds with respect to the related Mortgaged Property, as provided
      in the definition of Liquidation Proceeds.  If the Servicer has
      knowledge that a Mortgaged Property that the Servicer is contemplating acquiring
      in foreclosure or by deed in lieu of foreclosure is located within a one mile
      radius of any site listed in the Expenditure Plan for the Hazardous Substance
      Clean Up Bond Act of 1984 or other site with environmental or hazardous waste
      risks known to the Servicer, the Servicer will, before acquiring the Mortgaged
      Property, consider the risks and only take action in accordance with its
      established environmental review procedures.

     

    

    
      
        
          
          

        

        
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    With
      respect to any REO Property, the deed or certificate of sale shall be taken
      in
      the name of the Trustee for the benefit of the Certificateholders, or its
      nominee, on behalf of the Certificateholders.  The Trustee’s name
      shall be placed on the title to the REO Property solely as the Trustee hereunder
      and not in its individual capacity.  The Servicer shall ensure that
      the title to the REO Property references the Pooling and Servicing Agreement
      and
      the Trustee’s capacity hereunder.  Pursuant to its efforts to sell the
      REO Property, the Servicer shall either itself or through an agent selected
      by
      the Servicer protect and conserve the REO Property in accordance with the
      Servicing Standard.

     

    The
      Servicer shall perform the tax reporting and withholding required by sections
      1445 and 6050J of the Code with respect to foreclosures and abandonments, the
      tax reporting required by section 6050H of the Code with respect to the receipt
      of mortgage interest from individuals and, if required by section 6050P of
      the
      Code with respect to the cancellation of indebtedness by certain financial
      entities, by preparing any required tax and information returns, in the form
      required.

     

    If
      the
      Trust Fund acquires any Mortgaged Property as aforesaid or otherwise in
      connection with a default or imminent default on a Mortgage Loan, the REO
      Property shall only be held temporarily, shall be actively marketed for sale,
      and the Servicer shall dispose of the Mortgaged Property as soon as practicable,
      and in any case before the end of the third calendar year following the calendar
      year in which the Trust Fund acquires the property.  Notwithstanding
      any other provision of this Agreement, no Mortgaged Property acquired by the
      Trust Fund shall be rented (or allowed to continue to be rented) or otherwise
      used for the production of income by or on behalf of the Trust
      Fund.

     

    The
      decision of the Servicer to foreclose on a defaulted Mortgage Loan shall be
      subject to a determination by the Servicer that the proceeds of the foreclosure
      would exceed the costs and expenses of bringing a foreclosure
      proceeding.  The proceeds received from the maintenance of any REO
      Properties, net of reimbursement to the Servicer for costs incurred (including
      any property or other taxes) in connection with maintenance of the REO
      Properties and net of unreimbursed Servicing Fees, Advances, and Servicing
      Advances, shall be applied to the payment of principal of and interest on the
      related defaulted Mortgage Loans (with interest accruing as though the Mortgage
      Loans were still current and adjustments, if applicable, to the Mortgage Rate
      were being made in accordance with the Mortgage Note) and all such proceeds
      shall be deemed, for all purposes in this Agreement, to be payments on account
      of principal and interest on the related Mortgage Notes and shall be deposited
      into the Certificate Account.  To the extent the net proceeds received
      during any calendar month exceeds the amount attributable to amortizing
      principal and accrued interest at the related Mortgage Rate on the related
      Mortgage Loan for the calendar month, the excess shall be considered to be
      a
      partial prepayment of principal of the related Mortgage Loan.

     

    

    
      
        
          
          

        

        
          59

          
            

          

        

        
          
          

        

      

    

    

    The
      proceeds from any liquidation of a Mortgage Loan, as well as any proceeds from
      an REO Property, will be applied in the following order of priority: first,
      to
      reimburse the Servicer for any related unreimbursed Servicing Advances or
      Servicing Fees or for any related unreimbursed Advances, as applicable; second,
      to reimburse the Servicer, as applicable, and to reimburse the Certificate
      Account for any Nonrecoverable Advances (or portions thereof) that were
      previously withdrawn by the Servicer pursuant to Section 3.09(a)(iii) that
      related to the Mortgage Loan; third, to accrued and unpaid interest (to the
      extent no Advance has been made for such amount or any such Advance has been
      reimbursed) on the Mortgage Loan or related REO Property, at the Adjusted Net
      Mortgage Rate to the Due Date occurring in the month in which such amounts
      are
      required to be distributed; and fourth, as a recovery of principal of the
      Mortgage Loan.  The Servicer will retain any Excess Proceeds from the
      liquidation of a Liquidated Mortgage Loan as additional servicing compensation
      pursuant to Section 3.15.

     

    The
      Servicer may agree to a modification of any Mortgage Loan at the request of
      the
      related Mortgagor if (i) the modification is in lieu of a refinancing and (ii)
      the Servicer purchases that Mortgage Loan from the Trust Fund as described
      below.  Upon the agreement of the Servicer to modify a Mortgage Loan
      in accordance with the preceding sentence, the Servicer shall purchase that
      Mortgage Loan and all interest of the Trustee in that Mortgage Loan shall
      automatically be deemed transferred and assigned to the Servicer and all
      benefits and burdens of ownership thereof, including the right to accrued
      interest thereon from the date of purchase and the risk of default thereon,
      shall pass to the Servicer.  The Servicer shall promptly deliver to
      the Trustee a certification of a Servicing Officer to the effect that all
      requirements of this paragraph have been satisfied with respect to a Mortgage
      Loan to be repurchased pursuant to this paragraph.

     

    The
      Servicer shall deposit the Purchase Price for any Mortgage Loan repurchased
      pursuant to Section 3.12 in the Certificate Account pursuant to Section 3.06
      within one Business Day after the purchase of the Mortgage Loan.  Upon
      receipt by the Trustee of written notification of any such deposit signed by
      a
      Servicing Officer, the Trustee shall release to the Servicer the related
      Mortgage File and shall execute and deliver such instruments of transfer or
      assignment, in each case without recourse, as shall be necessary to vest in
      the
      Servicer any Mortgage Loan previously transferred and assigned pursuant
      hereto.  The Servicer covenants and agrees to indemnify the Trust Fund
      against any liability for any “prohibited transaction” taxes and any related
      interest, additions, and penalties imposed on the Trust Fund established
      hereunder as a result of any modification of a Mortgage Loan effected pursuant
      to this Section, or any purchase of a Mortgage Loan by the Servicer in
      connection with a modification (but such obligation shall not prevent the
      Servicer or any other appropriate Person from contesting any such tax in
      appropriate proceedings and shall not prevent the Servicer from withholding
      payment of such tax, if permitted by law, pending the outcome of such
      proceedings).  The Servicer shall have no right of reimbursement for
      any amount paid pursuant to the foregoing indemnification, except to the extent
      that the amount of any tax, interest, and penalties, together with interest
      thereon, is refunded to the Trust Fund.

     

    Section
      3.13                                Trustee
      to Cooperate; Release of Mortgage Files.

     

    Upon
      the
      payment in full of any Mortgage Loan, or the receipt by the Servicer of a
      notification that payment in full will be escrowed in a manner customary for
      such purposes, the Servicer will immediately notify the Trustee by delivering
      a
      Request for Release substantially in the form of Exhibit N.  Upon
      receipt of the request, the Trustee shall promptly release the related Mortgage
      File to the Servicer, and the Trustee shall at the Servicer’s direction execute
      and deliver to the Servicer the request for reconveyance, deed of reconveyance,
      or release or satisfaction of mortgage or such instrument releasing the lien
      of
      the Mortgage in each case provided by the Servicer, together with the Mortgage
      Note with written evidence of cancellation thereon.  The Servicer is
      authorized to cause the removal from the registration on the MERS System of
      such
      Mortgage and to execute and deliver, on behalf of the Trustee and the
      Certificateholders or any of them, any and all instruments of satisfaction
      or
      cancellation or of partial or full release.  Expenses incurred in
      connection with any instrument of satisfaction or deed of reconveyance shall
      be
      chargeable to the related Mortgagor.

     

    

    
      
        
          
          

        

        
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    From
      time
      to time and as shall be appropriate for the servicing or foreclosure of any
      Mortgage Loan, including for such purpose collection under any policy of flood
      insurance, any fidelity bond or errors or omissions policy, or for the purposes
      of effecting a partial release of any Mortgaged Property from the lien of the
      Mortgage or the making of any corrections to the Mortgage Note or the Mortgage
      or any of the other documents included in the Mortgage File, the Trustee shall,
      upon delivery to the Trustee of a Request for Release in the form of Exhibit
      M
      signed by a Servicing Officer, release the Mortgage File to the Servicer or
      its
      designee.  Subject to the further limitations set forth below, the
      Servicer shall cause the Mortgage File or documents so released to be returned
      to the Trustee when the need therefor by the Servicer no longer exists, unless
      the Mortgage Loan is liquidated and the proceeds thereof are deposited in the
      Certificate Account, in which case the Servicer shall deliver to the Trustee
      a
      Request for Release in the form of Exhibit N, signed by a Servicing
      Officer.

     

    If
      the
      Servicer at any time seeks to initiate a foreclosure proceeding in respect
      of
      any Mortgaged Property as authorized by this Agreement, the Servicer shall
      deliver to the Trustee, for signature, as appropriate, any court pleadings,
      requests for trustee’s sale, or other documents necessary to effectuate such
      foreclosure or any legal action brought to obtain judgment against the Mortgagor
      on the Mortgage Note or the Mortgage or to obtain a deficiency judgment or
      to
      enforce any other remedies or rights provided by the Mortgage Note or the
      Mortgage or otherwise available at law or in equity.

     

    Section
      3.14                                Documents,
      Records and Funds in Possession of the Servicer to be Held for the
      Trustee.

     

    The
      Servicer shall account fully to the Trustee for any funds it receives or
      otherwise collects as Liquidation Proceeds or Insurance Proceeds in respect
      of
      any Mortgage Loan.  All Mortgage Files and funds collected or held by,
      or under the control of, the Servicer in respect of any Mortgage Loans, whether
      from the collection of principal and interest payments or from Liquidation
      Proceeds, including any funds on deposit in the Certificate Account, shall
      be
      held by the Servicer for and on behalf of the Trustee and shall be and remain
      the sole and exclusive property of the Trustee, subject to the applicable
      provisions of this Agreement.  The Servicer also agrees that it shall
      not create, incur or subject any Mortgage File or any funds that are deposited
      in the Certificate Account, Distribution Account, or any Escrow Account, or
      any
      funds that otherwise are or may become due or payable to the Trustee for the
      benefit of the Certificateholders, to any claim, lien, security interest,
      judgment, levy, writ of attachment, or other encumbrance, or assert by legal
      action or otherwise any claim or right of setoff against any Mortgage File
      or
      any funds collected on, or in connection with, a Mortgage Loan, except, however,
      that the Servicer shall be entitled to set off against and deduct from any
      such
      funds any amounts that are properly due and payable to the Servicer under this
      Agreement.

     

    Section
      3.15                                Servicing
      Compensation.

     

    The
      Servicer may retain or withdraw from the Certificate Account the Servicing
      Fee
      for each Mortgage Loan for the related Distribution Date.  If the
      Servicer directly services a Mortgage Loan, the Servicer may retain the
      Servicing Fee for its own account as compensation for performing
      services.  Notwithstanding the foregoing, the Servicing Fee payable to
      the Servicer shall be reduced by the lesser of the aggregate of the Prepayment
      Interest Shortfalls with respect to the Distribution Date and the aggregate
      Compensating Interest for the Distribution Date.

     

    

    
      
        
          
          

        

        
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    Additional
      servicing compensation in the form of Excess Proceeds, Prepayment Interest
      Excess, assumption fees and all income net of any losses realized from Permitted
      Investments shall be retained by the Servicer to the extent not required to
      be
      deposited in the Certificate Account pursuant to Section 3.06.  The
      Servicer shall be required to pay all expenses incurred by it in connection
      with
      its servicing activities hereunder (including the payment of any premiums for
      hazard insurance, and any Primary Insurance Policy and maintenance of the other
      forms of insurance coverage required by this Agreement) and shall not be
      entitled to reimbursement therefor except as specifically provided in this
      Agreement.

     

    Section
      3.16                                Access
      to Certain Documentation.

     

    The
      Servicer shall provide to the OTS and the FDIC and to comparable regulatory
      authorities supervising Holders of Certificates and Certificate Owners and
      the
      examiners and supervisory agents of the OTS, the FDIC, and such other
      authorities, access to the documentation regarding the Mortgage Loans required
      by applicable regulations of the OTS and the FDIC.  Access shall be
      afforded without charge, but only upon reasonable prior written request and
      during normal business hours at the offices designated by the
      Servicer.  Nothing in this Section 3.16 shall limit the obligation of
      the Servicer to observe any applicable law prohibiting disclosure of information
      regarding the Mortgagors and the failure of the Servicer to provide access
      as
      provided in this Section 3.16 as a result of such obligation shall not
      constitute a breach of this Section 3.16.

     

    Section
      3.17                                Annual
      Statement as to Compliance.

     

    (a)  By
      March 15 of each year, commencing with 2008, the Servicer shall deliver to
      the
      Trustee via electronic mail (DBSEC.Notifications@db.com) and the Depositor
      an
      Officer’s Certificate signed by two Servicing Officers stating, as to each
      signer thereof, that (i) a review of the activities of the Servicer during
      the
      preceding calendar year (or applicable portion thereof) and of the performance
      of the Servicer under this Agreement has been made under such officer’s
      supervision, and (ii) to the best of such officer’s knowledge, based on the
      review, the Servicer has fulfilled all its obligations under this Agreement,
      in
      all material respects throughout the year (or applicable portion thereof),
      or,
      if there has been a failure to fulfill any obligation in any material respect,
      specifying each failure known to the officer and the nature and status
      thereof.

     

    (b)  [Reserved].

     

    (c)  Copies
      of such statement shall be provided by the Trustee to any Certificateholder
      or
      Certificate Owner upon request at the Servicer’s expense, provided such
      statement is delivered by the Servicer to the Trustee.

     

    Section
      3.18                                Errors
      and Omissions Insurance; Fidelity Bonds.

     

    The
      Servicer shall obtain and maintain in force (a) policies of insurance covering
      errors and omissions in the performance of its obligations as Servicer hereunder
      and (b) a fidelity bond covering its officers, employees, and
      agents.  Each policy and bond shall, together, comply with the
      requirements from time to time of FNMA or FHLMC for persons performing servicing
      for mortgage loans purchased by FNMA or FHLMC.  If any policy or bond
      ceases to be in effect, the Servicer shall obtain a comparable replacement
      policy or bond from an insurer or issuer meeting the above requirements as
      of
      the date of the replacement.

     

    

    
      
        
          
          

        

        
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    Section
      3.19                                Notification
      of Adjustments.

     

    On
      each
      Adjustment Date, the Servicer shall make interest rate adjustments for each
      Mortgage Loan in compliance with the requirements of the related Mortgage and
      Mortgage Note and applicable regulations.  The Servicer shall execute
      and deliver the notices required by each Mortgage and Mortgage Note and
      applicable regulations regarding interest rate adjustments.  The
      Servicer also shall provide timely notification to the Trustee of all applicable
      data and information regarding such interest rate adjustments and the Servicer’s
      methods of implementing such interest rate adjustments.  Upon the
      discovery by the Servicer or the Trustee that the Servicer has failed to adjust
      or has incorrectly adjusted a Mortgage Rate or a monthly payment pursuant to
      the
      terms of the related Mortgage Note and Mortgage, the Servicer shall immediately
      deposit in the Certificate Account from its own funds the amount of any loss
      caused thereby without reimbursement therefor; provided, however, the Servicer
      shall not be liable with respect to any interest rate adjustments made by any
      servicer prior to the Servicer.

     

    Section
      3.20                                Prepayment
      Charges.

     

    (a)  The
      Servicer will not waive any part of any Prepayment Charge unless the waiver
      relates to a default or a reasonably foreseeable default, the Prepayment Charge
      would cause an undue hardship to the related borrower, the Mortgaged Property
      is
      sold by the Mortgagor, the collection of any Prepayment Charge would violate
      any
      relevant law or regulation or the waiving of the Prepayment Charge would
      otherwise benefit the Trust Fund and it is expected that the waiver would
      maximize recovery of total proceeds taking into account the value of the
      Prepayment Charge and related Mortgage Loan and doing so is standard and
      customary in servicing similar Mortgage Loans (including any waiver of a
      Prepayment Charge in connection with a refinancing of a Mortgage Loan that
      is
      related to a default or a reasonably foreseeable default).  The
      Servicer will not waive a Prepayment Charge in connection with a refinancing
      of
      a Mortgage Loan that is not related to a default or a reasonably foreseeable
      default.

     

    (b)  If
      a Prepayment Charge is waived other than as permitted by the prior paragraph,
      then the Servicer is required to pay the amount of such waived Prepayment
      Charge, for the benefit of the Holders of the related Class of Class P
      Certificates, by depositing such amount into the Distribution Account from
      its
      own funds, without any right of reimbursement therefor, together with and at
      the
      time that the amount prepaid on the related Mortgage Loan is required to be
      deposited into the Distribution Account.

     

    (c)  The
      Seller represents and warrants to the Depositor and the Trustee, as of the
      Closing Date, that the information in the Prepayment Charge Schedule (including
      the attached prepayment charge summary) is complete and accurate in all material
      respects at the dates as of which the information is furnished and each
      Prepayment Charge is permissible and enforceable in accordance with its terms
      under applicable state law, except as the enforceability thereof is limited
      due
      to acceleration in connection with a foreclosure or other involuntary
      payment.

     

    (d)  Upon
      discovery by the Servicer or a Responsible Officer of the Trustee (provided,
      however, that the Trustee shall have no obligation to conduct an independent
      investigation or inquiry in relation thereto) of a breach of the foregoing
      clause (c) that materially and adversely affects the right of the Holders of
      the
      Class P-1 and Class P-2 Certificates to any Prepayment Charge, the party
      discovering the breach shall give prompt written notice to the other
      parties.  Within 60 days of the earlier of discovery by the Servicer
      or receipt of notice by the Servicer of breach, the Servicer shall cure the
      breach in all material respects or shall pay into the Certificate Account the
      amount of the Prepayment Charge that would otherwise be due from the Mortgagor,
      less any amount representing such Prepayment Charge previously collected and
      paid by the Servicer into the Certificate Account.

     

    

    
      
        
          
          

        

        
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    Section
      3.21                                Late
      Payment Fees.

     

    (a)  The
      Servicer shall not waive any part of any Late Payment Fee unless (i) the
      collection of any Late Payment Fee would violate any relevant law or regulation
      or (ii) the waiving of the Late Payment Fee would otherwise benefit the Trust
      Fund and it is expected that the waiver would maximize recovery of total
      proceeds, taking into account the value of the Late Payment Fee and related
      Mortgage Loan and doing so is standard and customary in servicing similar
      Mortgage Loans (including the waiver of a Late Payment Fee in connection with
      a
      refinancing of a Mortgage Loan that is related to a default or reasonably
      foreseeable default).

     

    (b)  If
      the covenants made by the Servicer in clause (a) above is breached, the Servicer
      must pay into the Certificate Account prior to the Distribution Account Deposit
      Date following the end of the related Prepayment Period the amount of the waived
      Late Payment Fee.

     

    (c)  The
      Servicer shall remit Late Payment Fees assessable and not waived pursuant to
      clause (a) above in accordance with Section 3.09.

     

    

     

    

    
      
        
          
          

        

        
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    ARTICLE
      FOUR

     

    DISTRIBUTIONS
      AND
      ADVANCES
      BY
      THE
      SERVICER

     

    Section
      4.01                                Advances.

     

    (a)  The
      Servicer shall determine on or before each Servicer Advance Date whether it
      is
      required to make an Advance pursuant to the definition thereof.  If
      the Servicer determines it is required to make an Advance, it shall, on or
      before the Servicer Advance Date, either (i) deposit into the Certificate
      Account an amount equal to the Advance or (ii) make an appropriate entry in
      its
      records relating to the Certificate Account that any Amount Held for Future
      Distribution has been used by the Servicer in discharge of its obligation to
      make any such Advance.  Any funds so applied shall be replaced by the
      Servicer by deposit in the Certificate Account no later than the close of
      business on the next Servicer Advance Date.  The Servicer shall be
      entitled to be reimbursed from the Certificate Account for all Advances of
      its
      own funds made pursuant to this Section 4.01 as provided in Section
      3.09.  The obligation to make Advances with respect to any Mortgage
      Loan shall continue if such Mortgage Loan has been foreclosed or otherwise
      terminated and the Mortgaged Property has not been liquidated.  The
      Servicer shall inform the Trustee of the amount of the Advance to be made on
      each Servicer Advance Date no later than the second Business Day before the
      related Distribution Date.

     

    (b)  If
      the Servicer determines that it will be unable to comply with its obligation
      to
      make the Advances as and when described in the second sentence of Section
      4.01(a), it shall use its best efforts to give written notice thereof to the
      Trustee (each such notice an “Advance Notice”; and such notice may be given by
      telecopy), not later than 3:00 P.M., New York time, on the Business Day
      immediately preceding the related Servicer Advance Date, specifying the amount
      that it will be unable to deposit (each such amount an “Advance Deficiency”) and
      certifying that such Advance Deficiency constitutes an Advance hereunder and
      is
      not a Nonrecoverable Advance.  If the Trustee receives a Trustee
      Advance Notice on or before 3:00 P.M., New York time on a Servicer Advance
      Date,
      the Trustee is entitled to immediately terminate the Servicer under Section
      7.01, and shall, not later than 3:00 P.M., New York time, on the related
      Distribution Date, deposit in the Distribution Account an amount equal to the
      Advance Deficiency identified in such Trustee Advance Notice unless it is
      prohibited from so doing by applicable law.  Notwithstanding the
      foregoing, the Trustee shall not be required to make such deposit if the Trustee
      shall have received written notification from the Servicer that the Servicer
      has
      deposited or caused to be deposited in the Certificate Account an amount equal
      to such Advance Deficiency by 3:00 P.M. New York time on the related
      Distribution Date.  If the Trustee has not terminated the Servicer,
      the Servicer shall reimburse the Trustee for the amount of any Advance
      (including interest at the Prime Rate on the day of such reimbursement published
      in The Wall Street Journal) on such amount, made by the Trustee
      pursuant to this Section 4.01(b) not later than the second day following the
      related Servicer Advance Date.  In the event that the Servicer does
      not reimburse the Trustee in accordance with the requirements of the preceding
      sentence, the Trustee shall immediately (a) terminate all of the rights and
      obligations of the Servicer under this Agreement in accordance with Section
      7.01
      and (b) subject to the limitations set forth in Section 3.05, assume all of
      the
      rights and obligations of the Servicer hereunder.

     

    (c)  The
      Servicer shall, not later than the close of business on the Business Day
      immediately preceding each Servicer Advance Date, deliver to the Trustee a
      report (in form and substance reasonably satisfactory to the Trustee) that
      indicates (i) the Mortgage Loans with respect to which the Servicer has
      determined that the related Scheduled Payments should be advanced and (ii)
      the
      amount of the related Scheduled Payments.  The Servicer shall deliver
      to the Trustee on the related Servicer Advance Date an Officer’s Certificate of
      a Servicing Officer indicating the amount of any proposed Advance determined
      by
      the Servicer to be a Nonrecoverable Advance.

     

    

    
      
        
          
          

        

        
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    Section
      4.02                                Priorities
      of Distribution.

     

    (a)  (1)
      On each Distribution Date, the Trustee shall withdraw the Available Funds for
      Loan Group 1 from the Distribution Account and apply such funds to distributions
      on the Group 1 Senior Certificates in the following priority, in each case,
      to
      the extent of Available Funds remaining:

     

    (i)           concurrently,
      to each interest-bearing Class of Group 1 Senior Certificates, an amount
      allocable to interest equal to the related Class Optimal Interest Distribution
      Amount, any shortfall being allocated among such Classes in proportion to the
      amount of the Class Optimal Interest Distribution Amount that would have been
      distributed in the absence of such shortfall;

     

    (ii)           [reserved];

     

    (iii)           concurrently,
      to each Class of Group 1 Senior Certificates as follows:

     

    
      	
               

            	
              (A)

            	
              [reserved];
                and

            

    

     

    
      	
               

            	
              (B)

            	
              on
                each Distribution Date, the Principal Amount for Loan Group 1, up
                to the
                amount of the related Senior Principal Distribution Amount for such
                Distribution Date will be distributed in the following
                priority:

            

    

     

    (a)           to
      the Class A-R Certificates, until its Class Certificate Balance is reduced
      to
      zero; and

     

    (b)           concurrently,
      to the Class 1-A-1 and Class 1-A-2 Certificates, pro rata, until their
      respective Class Certificate Balances are reduced to zero;

     

    (iv)           [reserved];

     

    (2)           On
      each Distribution Date, the Trustee shall withdraw the Available Funds for
      Loan
      Group 2 from the Distribution Account and apply such funds to distributions
      on
      the Group 2 Senior Certificates in the following priority, in each case, to
      the
      extent of Available Funds remaining:

     

    (i)           concurrently,
      to each interest-bearing Class of Group 2 Senior Certificates, an amount
      allocable to interest equal to the related Class Optimal Interest Distribution
      Amount, any shortfall being allocated among such Classes in proportion to the
      amount of the Class Optimal Interest Distribution Amount that would have been
      distributed in the absence of such shortfall;

     

    (ii)           [reserved];

     

    (iii)           concurrently,
      to each Class of Group 2 Senior Certificates as follows:

     

    
      	
               

            	
              (A)

            	
              [reserved];

            

    

     

    
      	
               

            	
              (B)

            	
              on
                each Distribution Date, the Principal Amount for Loan Group 2, up
                to the
                amount of the related Senior Principal Distribution Amount for such
                Distribution Date will be distributed, concurrently, to the Class
                2-A-1
                and Class 2-A-2 Certificates, pro rata, until their respective Class
                Certificate Balances are reduced to
                zero;

            

    

     

    

    
      
        
          
          

        

        
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    (3)           On
      each Distribution Date, the Trustee shall withdraw the Available Funds for
      Loan
      Group 3 from the Distribution Account and apply such funds to distributions
      on
      the Group 3 Senior Certificates in the following priority, in each case, to
      the
      extent of Available Funds remaining:

     

    (i)           concurrently,
      to each interest-bearing Class of Group 3 Senior Certificates, an amount
      allocable to interest equal to the related Class Optimal Interest Distribution
      Amount, any shortfall being allocated among such Classes in proportion to the
      amount of the Class Optimal Interest Distribution Amount that would have been
      distributed in the absence of such shortfall;

     

    (ii)           [reserved];

     

    (iii)           concurrently,
      to each Class of Group 3 Senior Certificates as follows:

     

    
      	
               

            	
              (A)

            	
              [reserved];

            

    

     

    
      	
               

            	
              (B)

            	
              on
                each Distribution Date, the Principal Amount for Loan Group 3, up
                to the
                amount of the related Senior Principal Distribution Amount for such
                Distribution Date will be distributed to the Class 3-A-1 Certificates,
                until its Class Certificate Balance is reduced to
                zero;

            

    

     

    (4)           On
      each Distribution Date, after making the distributions described in Section
      4.02(a)(1), Section 4.02(a)(2) and Section 4.02(a)(3), Available Funds from
      each
      Loan Group remaining will be distributed to the Senior Certificates to the
      extent provided in Section 4.03;

     

    (5)           On
      each Distribution Date, Available Funds from each Loan Group remaining after
      making the distributions described in Section 4.02(a)(1), Section 4.02(a)(2),
      Section 4.02(a)(3) and Section 4.02(a)(4) will be distributed to the
      Subordinated Certificates, subject to paragraph 4.02(e) below, in the following
      order of priority:

     

    
      	
               

            	
              (A)

            	
              to
                the Class B-1 Certificates, an amount allocable to interest equal
                to the
                Class Optimal Interest Distribution Amount for such Class for such
                Distribution Date;

            

    

     

    
      	
               

            	
              (B)

            	
              to
                the Class B-1 Certificates, an amount allocable to principal equal
                to its
                Pro Rata Share for such Distribution Date until the Class Certificate
                Balance thereof is reduced to zero;

            

    

     

    
      	
               

            	
              (C)

            	
              to
                the Class B-2 Certificates, an amount allocable to interest equal
                to the
                Class Optimal Interest Distribution Amount for such Class for such
                Distribution Date;

            

    

     

    
      	
               

            	
              (D)

            	
              to
                the Class B-2 Certificates, an amount allocable to principal equal
                to its
                Pro Rata Share for such Distribution Date until the Class Certificate
                Balance thereof is reduced to zero;

            

    

     

    
      	
               

            	
              (E)

            	
              to
                the Class B-3 Certificates, an amount allocable to interest equal
                to the
                Class Optimal Interest Distribution Amount for such Class for such
                Distribution Date;

            

    

     

    

    
      
        
          
          

        

        
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              (F)

            	
              to
                the Class B-3 Certificates, an amount allocable to principal equal
                to its
                Pro Rata Share for such Distribution Date until the Class Certificate
                Balance thereof is reduced to zero;

            

    

     

    
      	
               

            	
              (G)

            	
              to
                the Class B-4 Certificates, an amount allocable to interest equal
                to the
                Class Optimal Interest Distribution Amount for such Class for such
                Distribution Date;

            

    

     

    
      	
               

            	
              (H)

            	
              to
                the Class B-4 Certificates, an amount allocable to principal equal
                to its
                Pro Rata Share for such Distribution Date until the Class Certificate
                Balance thereof is reduced to zero;

            

    

     

    
      	
               

            	
              (I)

            	
              to
                the Class B-5 Certificates, an amount allocable to interest equal
                to the
                Class Optimal Interest Distribution Amount for such Class for such
                Distribution Date;

            

    

     

    
      	
               

            	
              (J)

            	
              to
                the Class B-5 Certificates, an amount allocable to principal equal
                to its
                Pro Rata Share for such Distribution Date until the Class Certificate
                Balance thereof is reduced to zero;

            

    

     

    
      	
               

            	
              (K)

            	
              to
                the Class B-6 Certificates, an amount allocable to interest equal
                to the
                Class Optimal Interest Distribution Amount for such Class for such
                Distribution Date; and

            

    

     

    
      	
               

            	
              (L)

            	
              to
                the Class B-6 Certificates, an amount allocable to principal equal
                to its
                Pro Rata Share for such Distribution Date until the Class Certificate
                Balance thereof is reduced to zero;

            

    

     

    (6)           [reserved];
      and

    

    (7)           to
      the Class A-R Certificates, any remaining funds; provided, that such amounts
      shall not include the $200 held in trust for the Class P-1 and Class P-2
      Certificates.

    

    On
      each
      Distribution Date, all amounts representing Hard Prepayment Charges and Soft
      Prepayment Charges received during the related Prepayment Period (and amounts
      paid by the Servicer for waiving them) will be distributed to the holders of
      the
      Class P-1 and Class P-2 Certificates, respectively.  On the
      Distribution Date immediately following the expiration of the latest Prepayment
      Charge Period of the Mortgage Loans, the $100 held in trust for each Class
      of
      the Class P Certificates will be distributed to the Holders of the related
      Class
      of Class P Certificates.  On each Distribution Date, all amounts
      representing Late Payment Fees assessable during the related Prepayment Period
      (and amounts paid by the Servicer for waiving them less any such amounts not
      deposited into the Distribution Account by the preceding Distribution Account
      Deposit date plus any such amounts deposited into the Distribution Account
      with
      respect to prior Prepayment Periods) will be distributed to the Holders of
      the
      Class L Certificates.

     

    (b)  [reserved].

     

    (c)  [reserved].

     

    (d)  On
      each Distribution Date, the amount referred to in clause (i) of the definition
      of Class Optimal Interest Distribution Amount for each Class of Certificates
      for
      such Distribution Date shall be reduced by (i) the related Class’ pro rata share
      of Net Prepayment Interest Shortfalls based on (x) with respect to a Class
      of
      Senior Certificates, the related Class Optimal Interest Distribution Amount
      and
      (y) with respect to a Class of Subordinated Certificates on and prior to the
      second Senior Termination Date, the related Assumed Interest Amount for such
      Distribution Date or after the second Senior Termination Date, the Class Optimal
      Interest Distribution Amount for such Distribution Date, in each case in the
      absence of such Net Prepayment Interest Shortfalls and (ii) the related Class’
Allocable Share of (A) after the Special Hazard Coverage Termination Date,
      with
      respect to each Mortgage Loan in the related Loan Group (or, after the Senior
      Credit Support Depletion Date, any Mortgage Loan) that became a Special Hazard
      Mortgage Loan during the calendar month preceding the month of such Distribution
      Date, the excess of one month’s interest at the Adjusted Net Mortgage Rate on
      the Stated Principal Balance of such Mortgage Loan as of the Due Date in such
      month over the amount of Liquidation Proceeds applied as interest on such
      Mortgage Loan with respect to such month, (B) after the Bankruptcy Coverage
      Termination Date, with respect to each Mortgage Loan that became subject to
      a
      Bankruptcy Loss during the calendar month preceding the month of such
      Distribution Date, the interest portion of the related Debt Service Reduction
      or
      Deficient Valuation, (C) each Relief Act Reduction for the Mortgage Loans in
      the
      related Loan Group (or, after the Senior Credit Support Depletion Date, any
      Mortgage Loan) incurred during the calendar month preceding the month of such
      Distribution Date and (D) after the Fraud Loss Coverage Termination Date, with
      respect to each Mortgage Loan in the related Loan Group (or, after the Senior
      Credit Support Depletion Date, any Mortgage Loan) that became a Fraud Loan
      during the calendar month preceding the month of such Distribution Date, the
      excess of one month’s interest at the related Adjusted Net Mortgage Rate on the
      Stated Principal Balance of such Mortgage Loan as of the Due Date in such month
      over the amount of Liquidation Proceeds applied as interest on such Mortgage
      Loan with respect to such month.

     

    

    
      
        
          
          

        

        
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    (e)  Notwithstanding
      the priority and allocation contained in Section 4.02(a)(5), if, with respect
      to
      any Class of Subordinated Certificates, on any Distribution Date the sum of
      the
      related Class Subordination Percentages of such Class and of all Classes of
      Subordinated Certificates that have a higher numerical Class designation than
      such Class (the “Applicable Credit Support Percentage”) is less than the
      Original Applicable Credit Support Percentage for such Class, no distribution
      of
      Principal Prepayments on the Mortgage Loans will be made to any such Classes
      (the “Restricted Classes”) and the amount of such Principal Prepayments
      otherwise distributable to the Restricted Classes shall be distributed to the
      Classes of Subordinated Certificates having lower numerical Class designations
      than such Class, pro rata, based on their respective Class Certificate Balances
      immediately prior to such Distribution Date and shall be distributed in the
      sequential order set forth in Section 4.02(a)(5).  Notwithstanding the
      foregoing, the Class of Subordinated Certificates then outstanding with the
      lowest numerical class designation shall not be a Restricted Class.

     

    (f)  If
      the amount of a Realized Loss on a Mortgage Loan in a Loan Group has been
      reduced by application of Subsequent Recoveries with respect to such Mortgage
      Loan, the amount of such Subsequent Recoveries will be applied sequentially,
      in
      the order of payment priority, to increase the Class Certificate Balance of
      each
      related Class of Certificates to which Realized Losses have been allocated,
      but
      in each case by not more than the amount of Realized Losses previously allocated
      to that Class of Certificates pursuant to Section 4.05.  Holders of
      such Certificates will not be entitled to any payment in respect of the Class
      Optimal Interest Distribution Amount on the amount of such increases for any
      Interest Accrual Period preceding the Distribution Date on which such increase
      occurs.  Any such increases shall be applied to the Certificate
      Balance of each Certificate of such Class in accordance with its respective
      Percentage Interest.

     

    

    
      
        
          
          

        

        
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    Section
      4.03                                Cross-Collateralization;
      Adjustments to Available Funds

     

    (a)  On
      each Distribution Date prior to the earlier of the Senior Credit Support
      Depletion Date and the second Senior Termination Date, but after a Senior
      Termination Date, the Trustee shall distribute the principal portion of
      Available Funds on the Mortgage Loans relating to such Senior Certificates
      that
      will have been paid in full, to the holders of the Senior Certificates of the
      other Certificate Groups, pro rata, based on their Class Certificate Balances,
      provided, however, that the Trustee shall not make such distribution on such
      Distribution Date if (a) the Aggregate Subordinated Percentage for such
      Distribution Date is greater than or equal to 200% of such Aggregate
      Subordinated Percentage as of the Closing Date and (b) the average Stated
      Principal Balance of the Mortgage Loans in each Loan Group delinquent 60 days
      or
      more over the last six months, as a percentage of the aggregate Class
      Certificate Balance of the Subordinated Certificates, is less than
      50%.

     

    (b)  If
      on any Distribution Date the Class Certificate Balance of the Senior
      Certificates in a Loan Group is greater than the aggregate Stated Principal
      Balance of the Mortgage Loans in such Loan Group (each, an “Undercollateralized
      Group”), then the Trustee shall reduce the Available Funds of the other Loan
      Group(s) that are not undercollateralized (each, an “Overcollateralized Group”),
      as follows:

     

    (i)           to
      add to the Available Funds of the Undercollateralized Group an amount equal
      to
      the lesser of (a) one month’s interest on the Transfer Payment Received of the
      Undercollateralized Group at the Weighted Average Adjusted Net Mortgage Rate
      applicable to the Undercollateralized Group and (b) Available Funds of the
      Overcollateralized Group(s) remaining after making distributions to the
      Certificates of the Overcollateralized Group(s) on such Distribution Date
      pursuant to Section 4.02; and

     

    (ii)           to
      the Senior Certificates of the Undercollateralized Group, to the extent of
      the
      principal portion of Available Funds of the Overcollateralized Group(s)
      remaining after making distributions to the Senior Certificates of the
      Overcollateralized Group(s) on such Distribution Date pursuant to Section 4.02,
      until the Class Certificate Balance of the Senior Certificates of such
      Undercollateralized Group equals the aggregate Stated Principal Balance of
      the
      Mortgage Loans in the related Loan Group.

     

    The
      portion of the payment received by the Undercollateralized Group allocable
      to
      principal is referred to as a “Transfer Payment
      Received.” The portion of the payment made by the
      Overcollateralized Group allocable to principal is referred to as a
“Transfer Payment Made.”

     

    If
      more
      than one Overcollateralized Group exists on any Distribution Date, reductions
      in
      the Available Funds of such Overcollateralized Groups to make payments required
      to be made pursuant to this Section 4.03 on such Distribution Date shall be
      made
      pro rata, based on the amount of remaining Available Funds for each such
      Overcollateralized Group.  If more than one Undercollateralized Group
      exists on any Distribution Date, the payments required to be made pursuant
      to
      this Section 4.03 on such Distribution Date shall be made pro rata, based on
      the
      amount of payments to be made to the Undercollateralized Groups.

     

    Section
      4.04                                [Reserved].

     

    Section
      4.05                                Allocation
      of Realized Losses.

     

    (a)  On
      or prior to each Determination Date, the Trustee shall determine the total
      amount of Realized Losses, including Excess Losses, with respect to each related
      Distribution Date.

     

    

    
      
        
          
          

        

        
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    Realized
      Losses with respect to any Distribution Date shall be allocated as
      follows:

     

    (i)             [reserved];
      and

     

    (A)
      On
      each Distribution Date, any Realized Loss, other than Excess Losses, on the
      Mortgage Loans in a Loan Group shall be allocated first to the Subordinated
      Certificates, in the reverse order of their numerical Class designations
      (beginning with the Class of Subordinated Certificates then outstanding with
      the
      highest numerical Class designation), in each case until the Class Certificate
      Balance of the respective Class of Certificates has been reduced to zero, and
      then to the Senior Certificates of the related Senior Certificate Group as
      follows: (1) any Realized Losses, other than Excess Losses, on the Group 1
      Mortgage Loans will be allocated, sequentially, to the Class 1-A-2 and
      Class 1-A-1 Certificates, in that order, until their respective Class
      Certificate Balances are reduced to zero,  (2) any Realized Losses,
      other than Excess Losses, on the Group 2 Mortgage Loans will be allocated,
      sequentially, to the Class 2-A-2 and 2-A-1 Certificates, in that order,
      until their respective Class Certificate Balances are reduced to zero, and
      (3)
      any Realized Losses, other than Excess Losses, on the Group 3 Mortgage Loans
      Certificates will be allocated, to the Class 3-A-1 Certificate until its Class
      Certificate Balance is reduced to zero.

     

    (B)
      On
      each Distribution Date, Excess Losses on the Mortgage Loans in a Loan Group
      shall be allocated pro rata among the Classes of Senior Certificates of the
      related Senior Certificate Group and the Subordinated Certificates as follows:
      (i) in the case of the Senior Certificates, the Senior Percentage of such Excess
      Losses shall be allocated among the Classes of Senior Certificates in the
      related Senior Certificate Group, pro rata, on the basis of their respective
      Class Certificate Balances immediately prior to the related Distribution Date
      and (ii) in the case of the Subordinated Certificates, the Subordinated
      Percentage of such Excess Loss shall be allocated among the Classes of
      Subordinated Certificates, pro rata, based on each Class’ share of the Assumed
      Balance of the related Loan Group immediately prior to the related Distribution
      Date; provided, however, on any Distribution Date after the second Senior
      Termination Date for a Senior Certificate Group, such Excess Losses on the
      Mortgage Loans in the related Loan Group shall be allocated to the Senior
      Certificates and the Subordinated Certificates on the basis of their respective
      Class Certificate Balances immediately prior to such Distribution Date; provided
      further, however, on any Distribution Date on and after the Senior Credit
      Support Depletion Date, any Excess Loss shall be allocated, pro rata, among
      the
      Classes of Senior Certificates based on their respective Class Certificate
      Balances immediately prior to the related Distribution Date.

     

    (b)  The
      Class Certificate Balance of the Class of Subordinated Certificates then
      outstanding with the highest numerical Class designation shall be reduced on
      each Distribution Date by the amount, if any, by which the aggregate Class
      Certificate Balance of all outstanding Classes of Certificates (after giving
      effect to the distribution of principal and the allocation of Realized Losses
      on
      such Distribution Date) exceeds the aggregate Stated Principal Balance of the
      Mortgage Loans as of the Due Date in the month of such Distribution Date (after
      giving effect to Principal Prepayments in the Prepayment Period related to
      such
      Due Date).

     

    (c)  Any
      Realized Loss allocated to a Class of Certificates or any reduction in the
      Class
      Certificate Balance of a Class of Certificates pursuant to Section 4.05(a)
      or
      (b) shall be allocated among the Certificates of such Class in proportion to
      their respective Certificate Balances.

     

    (d)  Any
      allocation of Realized Losses to a Certificate or any reduction in the
      Certificate Balance of a Certificate pursuant to Section 4.05(a) or (b) shall
      be
      accomplished by reducing the Certificate Balance thereof immediately following
      the distributions made on the related Distribution Date in accordance with
      the
      definition of Certificate Balance.

     

    

    
      
        
          
          

        

        
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    Section
      4.06                                Monthly
      Statements to Certificateholders.

     

    (a)  Not
      later than each Distribution Date, the Trustee shall prepare and make available
      on its website at https://www.tss.db.com/invr to each Certificateholder, the
      Servicer and the Depositor a statement for the related distribution
      of:

     

    (i)           the
      applicable Record Dates, Interest Accrual Periods and Determination Dates for
      calculating distributions for the Distribution Date;

     

    (ii)          the
      amount of funds received from the Servicer for the Distribution Date separately
      identifying amounts received in respect of the Mortgage Loans and the amount
      of
      Advances included in the distribution on the Distribution Date;

     

    (iii)         the
      Servicing Fee and the amounts of any additional servicing compensation received
      by the Servicer attributable to penalties, fees, Excess Proceeds or other
      similar charges or fees and items with respect to the Distribution Date[, and,
      with respect to Lender PMI Loans, the interest premium charged the related
      borrower for primary mortgage guaranty insurance;]

     

    (iv)         the
      Trustee Fee for the Distribution Date;

     

    (v)          the
      aggregate amount of expenses paid from amounts on deposit in the Distribution
      Account;

     

    (vi)         the
      aggregate amount on deposit in the Distribution Account, as of the beginning
      and
      end of the related Due Period;

     

    (vii)        the
      amount of the distribution allocable to principal, separately identifying the
      aggregate amount of any Principal Prepayments and Liquidation Proceeds included
      therein;

     

    (viii)       the
      amount of the distribution allocable to interest, any Class Unpaid Interest
      Amounts included in the distribution and any remaining Class Unpaid Interest
      Amounts after giving effect to the distribution;

     

    (ix)          if
      the distribution to the Holders of any Class of Certificates is less than the
      full amount that would be distributable to them if sufficient funds were
      available, the amount of the shortfall and the allocation of the shortfall
      between principal and interest;

     

    (x)           the
      aggregate amount of Realized Losses in each Loan Group and in the aggregate
      incurred and Subsequent Recoveries, if any, received during the preceding
      calendar month and aggregate Realized Losses through the Distribution
      Date;

     

    (xi)          the
      Class Certificate Balance of each Class of Certificates before and after giving
      effect to the distribution of principal on the Distribution Date;

     

    (xii)         the
      Pass-Through Rate for each Class of Certificates with respect to the
      Distribution Date;

     

    

    
      
        
          
          

        

        
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    (xiii)        the
      number of Mortgage Loans in each Loan Group and in the aggregate and the
      aggregate Stated Principal Balance of the Mortgage Loans in each Loan Group
      and
      the Pool Stated Principal Balance as the first day of the related Due Period
      and
      the last day of the related Due Period;

     

    (xiv)        as
      of the last day of the related Due Period:

     

    
      	
               

            	
              (A)

            	
              the
                weighted average mortgage rate of the Mortgage Loans in each Loan
                Group
                and in the aggregate, and

            

    

     

    
      	
               

            	
              (B)

            	
              the
                weighted average remaining term to maturity of the Mortgage Loans
                in each
                Loan Group and in the aggregate;

            

    

     

    (xv)         the
      number and aggregate outstanding Stated Principal Balance of the Mortgage Loans
      in each Loan Group and in the aggregate as of the end of the preceding calendar
      month:

     

    
      	
               

            	
              (A)

            	
              delinquent
                (exclusive of Mortgage Loans in foreclosure) (1) 30 to 59 days, (2)
                60 to
                89 days and (3) 90 or more days and

            

    

     

    
      	
               

            	
              (B)

            	
              in
                foreclosure and delinquent (1) 30 to 59 days, (2) 60 to 89 days and
                (3) 90
                or more days,

            

    

     

    in
      each
      case as of the close of business on the last day of the calendar month preceding
      the Distribution Date;

     

    (xvi)        for
      each of the preceding 12 calendar months, or all calendar months since the
      Cut-off Date, whichever is less, the aggregate dollar amount of the Scheduled
      Payments (A) due on all Outstanding Mortgage Loans on the Due Date in each
      such
      month and (B) delinquent sixty (60) days or more on the Due Date in each such
      month;

     

    (xvii)       with
      respect to any Mortgage Loan that became an REO Property during the preceding
      calendar month, the loan number and Stated Principal Balance of the Mortgage
      Loan as of the close of business on the Determination Date preceding the
      Distribution Date;

     

    (xviii)      the
      total number and principal balance of any REO Properties in each Loan Group
      and
      in the aggregate (and market value, if available) as of the close of business
      on
      the Determination Date preceding the Distribution Date;

     

    (xix)         the
      aggregate amount of Principal Prepayments received during the related Prepayment
      Period and the number of Mortgage Loans subject to such Principal
      Prepayments;

     

    (xx)          the
      amount of Advances included in the distribution on the Distribution Date and
      the
      aggregate amount of Advances outstanding as of the close of business on the
      Determination Date;

     

    (xxi)         the
      aggregate amount of Advances reimbursed during the related Due Period, the
      general source of funds for such reimbursements and the aggregate amount of
      Advances outstanding as of the close of business on the Determination
      Date;

     

    

    
      
        
          
          

        

        
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    (xxii)        the
      aggregate amount of Servicing Advances reimbursed during the related Due Period,
      the general source of funds for such reimbursements and the aggregate amount
      of
      Servicing Advances outstanding as of the close of business on the Determination
      Date;

     

    (xxiii)       the
      aggregate number and outstanding Stated Principal Balance of Mortgage Loans
      in
      each Loan Group and in the aggregate repurchased during the related Due Period
      due to material breaches of representations and warranties regarding such
      Mortgage Loans;

     

    (xxiv)       each
      Senior Prepayment Percentage and Subordinated Prepayment Percentage for the
      Distribution Date;

     

    (xxv)        each
      Senior Percentage and Subordinated Percentage for the Distribution
      Date;

     

    (xxvi)       the
      Special Hazard Loss Coverage Amount, the Fraud Loss Coverage Amount and the
      Bankruptcy Loss Coverage Amount, in each case as of the related Determination
      Date;

     

    (xxvii)      Late
      Payment Fees collected or waived by the Servicer;

     

    (xxviii)     Hard
      Prepayment Charges and Soft Prepayment Charges collected, waived, and paid
      by
      the Servicer;

     

    (xxix)        the
      aggregate Stated Principal Balance of the Mortgage Loans in each Loan Group
      and
      in the aggregate that became Liquidated Mortgage Loans in the prior month and
      since the Cut-off Date (in each case immediately prior to the Stated Principal
      Balance being reduced to zero);

     

    (xxx)         the
      Stated Principal Balance of any Mortgage Loan that has been repurchased by
      the
      Servicer in accordance with Section 2.02, 2.03 or 3.12; and

     

    (xxxi)        the
      Stated Principal Balance of any Substitute Mortgage Loan provided by the Seller
      and the Stated Principal Balance of any Mortgage Loan that has been replaced
      by
      a Substitute Mortgage Loan in accordance with Section 2.03.

     

    The
      Trustee's responsibility for disbursing the above information to the
      Certificateholders is limited to the availability, timeliness and accuracy
      of
      the information derived from the Servicer.

     

    By
      the
      Reporting Date, the Servicer shall provide to the Trustee in electronic form
      the
      information needed to determine the distributions to be made pursuant to Section
      4.02 and any other information on which the Servicer and the Trustee mutually
      agree.

     

    On
      or
      before the fifth Business Day following the end of each Prepayment Period (but
      in no event later than the third Business Day prior to the related Distribution
      Date), the Servicer shall deliver to the Trustee (which delivery may be by
      electronic data transmission) a report in substantially the form set forth
      as
      Schedule V.

     

    

    
      
        
          
          

        

        
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    Within
      a
      reasonable period of time after the end of each calendar year, the Trustee
      shall
      cause to be furnished to each Person who at any time during the calendar year
      was a Certificateholder, a statement containing the information set forth in
      clauses (a)(vii) and (a)(viii) of this Section 4.06 aggregated for such calendar
      year or applicable portion thereof during which such Person was a
      Certificateholder.  Such obligation of the Trustee shall be deemed to
      have been satisfied to the extent that substantially comparable information
      shall be provided by the Trustee pursuant to any requirements of the Code as
      from time to time in effect.

     

    

    
      
        
          
          

        

        
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    ARTICLE
      FIVE

     

    THE
      CERTIFICATES

     

    Section
      5.01                                The
      Certificates.

     

    The
      Certificates shall be substantially in the forms attached hereto as
      exhibits.  The Certificates shall be issuable in registered form, in
      the minimum denominations, integral multiples of $1,000 in excess thereof
      (except that one Certificate in each Class may be issued in a different amount
      which must exceed the applicable minimum denomination) and aggregate
      denominations per Class set forth in the Preliminary Statement.

     

    Subject
      to Section 9.02 respecting the final distribution on the Certificates, on each
      Distribution Date the Trustee shall make distributions to each Certificateholder
      of record on the preceding Record Date either (x) by wire transfer in
      immediately available funds to the account of such holder at a bank or other
      entity having appropriate facilities therefor, if such Holder has so notified
      the Trustee at least five Business Days before the related Record Date or (y)
      by
      check mailed by first class mail to such Certificateholder at the address of
      such holder appearing in the Certificate Register.

     

    The
      Trustee shall execute the Certificates by the manual or facsimile signature
      of
      an authorized officer.  Certificates bearing the manual or facsimile
      signatures of individuals who were, at the time such signatures were affixed,
      authorized to sign on behalf of the Trustee shall bind the Trustee,
      notwithstanding that such individuals or any of them have ceased to be so
      authorized before the countersignature and delivery of any such Certificates
      or
      did not hold such offices at the date of such Certificate.  No
      Certificate shall be entitled to any benefit under this Agreement, or be valid
      for any purpose, unless countersigned by the Trustee by manual signature, and
      such countersignature upon any Certificate shall be conclusive evidence, and
      the
      only evidence, that such Certificate has been duly executed and delivered
      hereunder.  All Certificates shall be dated the date of their
      countersignature.  On the Closing Date, the Trustee shall countersign
      the Certificates to be issued at the direction of the Depositor, or any
      affiliate thereof.

     

    The
      Depositor shall provide the Trustee, on a continuous basis with an adequate
      inventory of Certificates to facilitate transfers.

     

    Section
      5.02                                Certificate
      Register; Registration of Transfer and Exchange of
      Certificates.

     

    (a)  The
      Trustee shall maintain, in accordance with Section 5.06, a Certificate Register
      for the Trust Fund in which, subject to subsections (b) and (c) below and to
      such reasonable regulations as it may prescribe, the Trustee shall provide
      for
      the registration of Certificates and of transfers and exchanges of Certificates
      as herein provided.  Upon surrender for registration of transfer of
      any Certificate, the Trustee shall execute and deliver, in the name of the
      designated transferee or transferees, one or more new Certificates of the same
      Class and aggregate Percentage Interest.

     

    At
      the
      option of a Certificateholder, Certificates may be exchanged for other
      Certificates of the same Class in authorized denominations and evidencing the
      same aggregate Percentage Interest upon surrender of the Certificates to be
      exchanged at the office or agency of the Trustee.  Whenever any
      Certificates are so surrendered for exchange, the Trustee shall execute,
      authenticate, and deliver the Certificates that the Certificateholder making
      the
      exchange is entitled to receive.  A written instrument of transfer in
      form satisfactory to the Trustee duly executed by the holder of a Certificate
      or
      his attorney duly authorized in writing shall accompany every Certificate
      presented or surrendered for registration of transfer or exchange.

     

    

    
      
        
          
          

        

        
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    No
      service charge to the Certificateholders shall be made for any registration
      of
      transfer or exchange of Certificates, but payment of a sum sufficient to cover
      any tax or governmental charge that may be imposed in connection with any
      transfer or exchange of Certificates may be required.

     

    All
      Certificates surrendered for registration of transfer or exchange shall be
      cancelled and subsequently destroyed by the Trustee in accordance with the
      Trustee’s customary procedures.

     

    (b)  No
      transfer of a Private Certificate shall be made unless such transfer is made
      pursuant to an effective registration statement under the Securities Act and
      any
      applicable state securities laws or is exempt from the registration requirements
      under the Securities Act and such state securities laws.  If a
      transfer is to be made in reliance on an exemption from the Securities Act
      and
      such state securities laws, to assure compliance with the Securities Act and
      such state securities laws, the Certificateholder desiring to effect such
      transfer and such Certificateholder’s prospective transferee shall each certify
      to the Trustee in writing the facts surrounding the transfer in substantially
      the form set forth in Exhibit J (the “Transferor Certificate”)
      and deliver to the Trustee either (i) a letter in substantially the form of
      either Exhibit K (the “Investment Letter”) or Exhibit L (the
“Rule 144A Letter”) or (ii) at the expense of the transferor,
      an Opinion of Counsel that the transfer may be made without registration under
      the Securities Act.  The Depositor shall provide to any Holder of a
      Private Certificate and any prospective transferee designated by that Holder,
      information regarding the related Certificates and the Mortgage Loans and any
      other information necessary to satisfy the condition to eligibility in Rule
      144A(d)(4) for transfer of the Certificate without registration thereof under
      the Securities Act pursuant to the registration exemption provided by Rule
      144A.  The Trustee and the Servicer shall cooperate with the Depositor
      in providing the Rule 144A information referenced in the preceding sentence,
      including providing to the Depositor such information regarding the
      Certificates, the Mortgage Loans, and other matters regarding the Trust Fund
      as
      the Depositor reasonably requests to meet its obligation under the preceding
      sentence.  Each Holder of a Private Certificate desiring to effect a
      transfer shall, and does hereby agree to, indemnify the Trustee, the Depositor,
      the Seller, and the Servicer against any liability that may result if the
      transfer is not so exempt or is not made in accordance with such federal and
      state laws.

     

    No
      transfer of an ERISA-Restricted Certificate shall be made unless the Trustee
      shall have received either (i) a representation from the transferee of such
      Certificate acceptable to and in form and substance satisfactory to the Trustee
      (if the Certificate is a Private Certificate, the requirement is satisfied
      only
      by the Trustee’s receipt of a representation letter from the transferee
      substantially in the form of Exhibit K or Exhibit L, and if the Certificate
      is a
      Residual Certificate, the requirement is satisfied only by the Trustee’s receipt
      of a representation letter from the transferee substantially in the form of
      Exhibit I), to the effect that (x) the transferee is not an employee benefit
      plan or arrangement subject to section 406 of ERISA or a plan subject to section
      4975 of the Code, or a person acting on behalf of any such plan or arrangement
      or using the assets of any such plan or arrangement to effect the transfer,
      or
      (y) if the ERISA-Restricted Certificate has been the subject of an
      ERISA-Qualifying Underwriting, a representation that the transferee is an
      insurance company that is purchasing such Certificate with funds contained
      in an
“insurance company general account” (as such term is defined in Section V(e) of
      Prohibited Transaction Class Exemption 95-60 (“PTCE
      95-60”) and that the purchase and holding of such Certificate
      satisfies the requirements for exemptive relief under Sections I and III of
      PTCE
      95-60, or (ii) in the case of any ERISA-Restricted Certificate presented for
      registration in the name of an employee benefit plan subject to ERISA, or a
      plan
      or arrangement subject to section 4975 of the Code (or comparable provisions
      of
      any subsequent enactments), or a trustee of any such plan or any other person
      acting on behalf of any such plan or arrangement or using such plan’s or
      arrangement’s assets, an Opinion of Counsel satisfactory to the Trustee, which
      Opinion of Counsel shall not be an expense of the Trustee, the Servicer or
      the
      Trust Fund, addressed to the Trustee and the Servicer, to the effect that the
      purchase and holding of such ERISA-Restricted Certificate will not result in
      a
      non-exempt prohibited transaction under ERISA or section 4975 of the Code and
      will not subject the Trustee or the Servicer to any obligation in addition
      to
      those expressly undertaken in this Agreement or to any liability.  For
      purposes of the preceding sentence, with respect to an ERISA-Restricted
      Certificate that is not a Residual Certificate, if the appropriate
      representation letter or Opinion of Counsel referred to in the preceding
      sentence is not furnished, the representation in clause (i) above, shall be
      deemed to have been made to the Trustee by the transferee’s (including an
      initial acquirer’s) acceptance of the ERISA-Restricted
      Certificates.  If the representation is violated, or any attempt is
      made to transfer to a plan or arrangement subject to section 406 of ERISA or
      a
      plan subject to section 4975 of the Code, or a person acting on behalf of any
      such plan or arrangement or using the assets of any such plan or arrangement,
      without the Opinion of Counsel described above, the attempted transfer or
      acquisition shall be void.

     

    

    
      
        
          
          

        

        
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    To
      the
      extent permitted under applicable law (including ERISA), the Trustee shall
      be
      under no liability to any Person for any registration of transfer of any
      ERISA-Restricted Certificate that is in fact not permitted by this Section
      5.02(b) or for making any payments due on such Certificate to the Holder thereof
      or taking any other action with respect to such Holder under this Agreement
      so
      long as the transfer was registered by the Trustee in accordance with the
      foregoing requirements.

     

    (c)  Each
      Person who has or who acquires any Ownership Interest in a Residual Certificate
      shall be deemed by the acceptance or acquisition of such Ownership Interest
      to
      have agreed to be bound by the following provisions, and the rights of each
      Person acquiring any Ownership Interest in a Residual Certificate are expressly
      subject to the following provisions:

     

    (i)           Each
      Person holding or acquiring any Ownership Interest in a Residual Certificate
      shall be a Permitted Transferee and shall promptly notify the Trustee of any
      change or impending change in its status as a Permitted Transferee.

     

    (ii)           No
      Ownership Interest in a Residual Certificate may be registered on the Closing
      Date or thereafter transferred, and the Trustee shall not register the Transfer
      of any Residual Certificate unless, in addition to the certificates required
      to
      be delivered to the Trustee under subparagraph (b) above, the Trustee shall
      have
      been furnished with an affidavit (a “Transfer Affidavit”) of the initial owner
      or the proposed transferee in the form of Exhibit I.

     

    (iii)           Each
      Person holding or acquiring any Ownership Interest in a Residual Certificate
      shall agree (A) to obtain a Transfer Affidavit from any other Person to whom
      such Person attempts to Transfer its Ownership Interest in a Residual
      Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such
      Person is acting as nominee, trustee or agent in connection with any Transfer
      of
      a Residual Certificate and (C) not to Transfer its Ownership Interest in a
      Residual Certificate or to cause the Transfer of an Ownership Interest in a
      Residual Certificate to any other Person if it has actual knowledge that such
      Person is not a Permitted Transferee.

     

    (iv)           Any
      attempted or purported Transfer of any Ownership Interest in a Residual
      Certificate in violation of this Section 5.02(c) shall be absolutely null and
      void and shall vest no rights in the purported Transferee.  If any
      purported transferee shall become a Holder of a Residual Certificate in
      violation of this Section 5.02(c), then the last preceding Permitted Transferee
      shall be restored to all rights as Holder thereof retroactive to the date of
      registration of Transfer of such Residual Certificate.  The Trustee
      shall be under no liability to any Person for any registration of Transfer
      of a
      Residual Certificate that is in fact not permitted by Section 5.02(b) and this
      Section 5.02(c) or for making any payments due on such Certificate to the Holder
      thereof or taking any other action with respect to such Holder under this
      Agreement so long as the Transfer was registered after receipt of the related
      Transfer Affidavit, Transferor Certificate and either the Rule 144A Letter
      or
      the Investment Letter.  The Trustee shall be entitled but not
      obligated to recover from any Holder of a Residual Certificate that was in
      fact
      not a Permitted Transferee at the time it became a Holder or, at such subsequent
      time as it became other than a Permitted Transferee, all payments made on such
      Residual Certificate at and after either such time.  Any such payments
      so recovered by the Trustee shall be paid and delivered by the Trustee to the
      last preceding Permitted Transferee of such Certificate.

     

    

    
      
        
          
          

        

        
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    (v)           The
      Depositor shall use its best efforts to make available, upon receipt of written
      request from the Trustee, all information necessary to compute any tax imposed
      under section 860E(e) of the Code as a result of a Transfer of an Ownership
      Interest in a Residual Certificate to any Holder who is not a Permitted
      Transferee.

     

    The
      restrictions on Transfers of a Residual Certificate set forth in this Section
      5.02(c) shall cease to apply (and the applicable portions of the legend on
      a
      Residual Certificate may be deleted) with respect to Transfers occurring after
      delivery to the Trustee of an Opinion of Counsel, which Opinion of Counsel
      shall
      not be an expense of the Trust Fund, the Trustee, the Seller or the Servicer,
      to
      the effect that the elimination of such restrictions will not cause any REMIC
      created under this Agreement to fail to qualify as a REMIC at any time that
      the
      Certificates are outstanding or result in the imposition of any tax on the
      Trust
      Fund, a Certificateholder or another Person.  Each Person holding or
      acquiring any Ownership Interest in a Residual Certificate hereby consents
      to
      any amendment of this Agreement which, based on an Opinion of Counsel furnished
      to the Trustee, is reasonably necessary (a) to ensure that the record ownership
      of, or any beneficial interest in, a Residual Certificate is not transferred,
      directly or indirectly, to a Person that is not a Permitted Transferee and
      (b)
      to provide for a means to compel the Transfer of a Residual Certificate which
      is
      held by a Person that is not a Permitted Transferee to a Holder that is a
      Permitted Transferee.

     

    (d)  The
      preparation and delivery of all certificates and opinions referred to above
      in
      this Section 5.02 in connection with transfer shall be at the expense of the
      parties to such transfers.

     

    (e)  Except
      as provided below, the Book-Entry Certificates shall at all times remain
      registered in the name of the Depository or its nominee and at all times: (i)
      registration of the Certificates may not be transferred by the Trustee except
      to
      another Depository; (ii) the Depository shall maintain book-entry records with
      respect to the Certificate Owners and with respect to ownership and transfers
      of
      such Book-Entry Certificates; (iii) ownership and transfers of registration
      of
      the Book-Entry Certificates on the books of the Depository shall be governed
      by
      applicable rules established by the Depository; (iv) the Depository may collect
      its usual and customary fees, charges and expenses from its Depository
      Participants; (v) the Trustee shall deal with the Depository, Depository
      Participants and Indirect Participants as representatives of the Certificate
      Owners of the Book-Entry Certificates for purposes of exercising the rights
      of
      holders under this Agreement, and requests and directions for and votes of
      such
      representatives shall not be deemed to be inconsistent if they are made with
      respect to different Certificate Owners; and (vi) the Trustee may rely and
      shall
      be fully protected in relying upon information furnished by the Depository
      with
      respect to its Depository Participants and furnished by the Depository
      Participants with respect to Indirect Participants and persons shown on the
      books of such Indirect Participants as direct or indirect Certificate
      Owners.

     

    All
      transfers by Certificate Owners of Book-Entry Certificates shall be made in
      accordance with the procedures established by the Depository Participant or
      brokerage firm representing the Certificate Owner.  Each Depository
      Participant shall only transfer Book-Entry Certificates of Certificate Owners
      it
      represents or of brokerage firms for which it acts as agent in accordance with
      the Depository’s normal procedures.

     

    

    
      
        
          
          

        

        
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    If
      (x)
      (i)  the Depository or the Depositor advises the Trustee in writing
      that the Depository is no longer willing or able to properly discharge its
      responsibilities as Depository, and (ii) the Trustee or the Depositor is unable
      to locate a qualified successor or (y) after the occurrence of an Event of
      Default, Certificate Owners representing at least 51% of the Certificate Balance
      of the Book-Entry Certificates together advise the Trustee and the Depository
      through the Depository Participants in writing that the continuation of a
      book-entry system through the Depository is no longer in the best interests
      of
      the Certificate Owners, the Trustee shall notify all Certificate Owners, through
      the Depository, of the occurrence of any such event and of the availability
      of
      definitive, fully-registered Certificates (the “Definitive
      Certificates”) to Certificate Owners requesting the
      same.  Upon surrender to the Trustee of the related Class of
      Certificates by the Depository, accompanied by the instructions from the
      Depository for registration, the Trustee shall issue the Definitive
      Certificates.  Neither the Servicer, the Depositor nor the Trustee
      shall be liable for any delay in delivery of such instruction and each may
      conclusively rely on, and shall be protected in relying on, such
      instructions.  The Servicer shall provide the Trustee with an adequate
      inventory of certificates to facilitate the issuance and transfer of Definitive
      Certificates.  Upon the issuance of Definitive Certificates all
      references herein to obligations imposed upon or to be performed by the
      Depository shall be deemed to be imposed upon and performed by the Trustee,
      to
      the extent applicable with respect to such Definitive Certificates and the
      Trustee shall recognize the Holders of the Definitive Certificates as
      Certificateholders hereunder; provided that the Trustee shall not by virtue
      of
      its assumption of such obligations become liable to any party for any act or
      failure to act of the Depository.

     

    Section
      5.03                                Mutilated,
      Destroyed, Lost or Stolen Certificates.

     

    If
      (a)
      any mutilated Certificate is surrendered to the Trustee, or (b) the Trustee
      receives evidence to its satisfaction of the destruction, loss, or theft of
      any
      Certificate and the Servicer and the Trustee receive the security or indemnity
      required by them to hold each of them harmless, then, in the absence of notice
      to the Trustee that the Certificate has been acquired by a Protected Purchaser,
      and if the requirements of Section 8-406 of the UCC are met and subject to
      Section 8-405 of the UCC, the Trustee shall execute, countersign, and deliver,
      in exchange for or in lieu of any such mutilated, destroyed, lost, or stolen
      Certificate, a new Certificate of like Class, tenor, and Percentage
      Interest.  In connection with the issuance of any new Certificate
      under this Section 5.03, the Trustee may require the payment of a sum sufficient
      to cover any tax or other governmental charge that may be imposed in relation
      thereto and any other expenses (including the fees and expenses of the Trustee)
      connected therewith.  Any replacement Certificate issued pursuant to
      this Section 5.03 shall constitute complete and indefeasible evidence of
      ownership, as if originally issued, whether or not the lost, stolen, or
      destroyed Certificate is found at any time.

     

    Section
      5.04                                Persons
      Deemed Owners.

     

    The
      Servicer, the Trustee, and any agent of the Servicer or the Trustee may treat
      the Person in whose name any Certificate is registered as the owner of such
      Certificate for the purpose of receiving distributions as provided in this
      Agreement and for all other purposes whatsoever, and neither the Servicer,
      the
      Trustee nor any agent of the Servicer or the Trustee shall be affected by any
      notice to the contrary.

     

    Section
      5.05                                Access
      to List of Certificateholders’ Names and Addresses.

     

    If
      three
      or more Certificateholders and/or Certificate Owners (a) request such
      information in writing from the Trustee, (b) state that such Certificateholders
      and/or Certificate Owners desire to communicate with other Certificateholders
      and/or Certificate Owners with respect to their rights under this Agreement
      or
      under the Certificates, and (c) provide a copy of the communication which such
      Certificateholders and/or Certificate Owners propose to transmit, or if the
      Depositor or Servicer shall request such information in writing from the
      Trustee, then the Trustee shall, within ten Business Days after the receipt
      of
      such request, provide the Depositor, the Servicer or such Certificateholders
      and/or Certificate Owners at such recipients’ expense the most recent list of
      the Certificateholders of such Trust Fund held by the Trustee.  The
      Depositor and every Certificateholder and/or Certificate Owner, by receiving
      and
      holding a Certificate, agree that the Trustee shall not be held accountable
      because of the disclosure of any such information as to the list of the
      Certificateholders hereunder, regardless of the source from which such
      information was derived.

     

    

    
      
        
          
          

        

        
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    Section
      5.06                                Maintenance
      of Office or Agency.

     

    The
      Certificate Registrar will maintain at its expense an office or offices or
      agency or agencies in the United States located at DB Services Tennessee, 648
      Grassmere Park Rd., Nashville, TN 37211-3658, Attention: Transfer Unit, where
      Certificates may be surrendered for registration of transfer or
      exchange.  The Certificate Registrar will give prompt written notice
      to the Certificateholders and the Trustee (if other than the Certificate
      Registrar) of any change in such location of any such office or
      agency.

     

    

    
      
        
          
          

        

        
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    ARTICLE
      SIX

     

    THE
      DEPOSITOR
      AND
      THE
      SERVICER

     

    Section
      6.01                                Respective
      Liabilities of the Depositor and the Servicer.

     

    The
      Depositor and the Servicer shall each be liable in accordance with this
      Agreement only to the extent of the obligations specifically and respectively
      imposed upon and undertaken by them in this Agreement.

     

    Section
      6.02                                Merger
      or Consolidation of the Depositor or the Servicer.

     

    The
      Depositor and the Servicer will each keep in full effect their existence and
      their rights and franchises as a corporation and a federal savings bank,
      respectively, under the laws of the United States or under the laws of one
      of
      the states thereof and will each obtain and preserve its qualification to do
      business as a foreign corporation in each jurisdiction in which such
      qualification is or shall be necessary to protect the validity and
      enforceability of this Agreement, or any of the Mortgage Loans and to perform
      its respective duties under this Agreement.

     

    Any
      Person into which the Depositor or the Servicer may be merged or consolidated,
      or any Person resulting from any merger or consolidation to which the Depositor
      or the Servicer shall be a party, or any person succeeding to the business
      of
      the Depositor or the Servicer, shall be the successor of the Depositor or the
      Servicer, as the case may be, hereunder, without the execution or filing of
      any
      paper or any further act on the part of any of the parties hereto, anything
      herein to the contrary notwithstanding; provided, however, that the successor
      or
      surviving Person to the Servicer shall be qualified to sell mortgage loans
      to,
      and to service mortgage loans on behalf of, FNMA or FHLMC.

     

    As
      a
      condition to the effectiveness of any merger or consolidation, at least 15
      calendar days prior to the effective date of any merger or consolidation of
      the
      Servicer, the Servicer shall provide (x) written notice to the Depositor of
      any
      successor pursuant to this Section and (y) in writing and in form and substance
      reasonably satisfactory to the Depositor, all information reasonably requested
      by the Depositor in order to comply with its reporting obligation under Item
      6.02 of Form 8-K with respect to a replacement Servicer.

     

    Section
      6.03                                Limitation
      on Liability of the Depositor, the Seller, the Servicer, and
      Others.

     

    None
      of
      the Depositor, the Seller, the Servicer or any of the directors, officers,
      employees or agents of the Depositor, the Seller or the Servicer shall be under
      any liability to the Certificateholders for any action taken or for refraining
      from the taking of any action in good faith pursuant to this Agreement, or
      for
      errors in judgment; provided, however, that this provision shall not protect
      the
      Depositor, the Seller, the Servicer or any such Person against any breach of
      representations or warranties made by it herein or protect the Depositor, the
      Seller, the Servicer or any such Person from any liability which would otherwise
      be imposed by reasons of willful misfeasance, bad faith or gross negligence
      in
      the performance of duties or because of reckless disregard of obligations and
      duties hereunder.  The Depositor, the Seller, the Servicer, and any
      director, officer, employee or agent of the Depositor, the Seller or the
      Servicer may rely in good faith on any document of any kind prima facie properly
      executed and submitted by any Person respecting any matters arising
      hereunder.  The Depositor, the Seller, the Servicer, and any director,
      officer, employee or agent of the Depositor, the Seller or the Servicer shall
      be
      indemnified by the Trust Fund and held harmless against any loss, liability
      or
      expense incurred in connection with any audit, controversy or judicial
      proceeding relating to a governmental taxing authority or any legal action
      relating to this Agreement or the Certificates, other than any loss, liability
      or expense related to any specific Mortgage Loan or Mortgage Loans (except
      as
      any such loss, liability or expense shall be otherwise reimbursable pursuant
      to
      this Agreement) and any loss, liability or expense incurred because of willful
      misfeasance, bad faith or gross negligence in the performance of duties
      hereunder or because of reckless disregard of obligations and duties
      hereunder.  None of the Depositor, the Seller or the Servicer shall be
      under any obligation to appear in, prosecute or defend any legal action that
      is
      not incidental to its respective duties hereunder and which in its opinion
      may
      involve it in any expense or liability; provided, however, that any of the
      Depositor, the Seller or the Servicer may in its discretion undertake any such
      action that it may deem appropriate in respect of this Agreement and the rights
      and duties of the parties hereto and interests of the Trustee and the
      Certificateholders hereunder.  In such event, the legal expenses and
      costs of such action and any liability resulting therefrom shall be expenses,
      costs and liabilities of the Trust Fund, and the Depositor, the Seller, and
      the
      Servicer shall be entitled to be reimbursed therefor out of the Certificate
      Account.

     

    

    
      
        
          
          

        

        
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    Section
      6.04                                Limitation
      on Resignation of the Servicer.

     

    The
      Servicer shall not resign from the obligations and duties hereby imposed on
      it
      except (a) upon appointment of a successor servicer and receipt by the Trustee
      of a letter from each Rating Agency that such a resignation and appointment
      will
      not result in a downgrading, qualification or withdrawal of the rating of any
      of
      the Certificates or (b) upon determination that its duties under this Agreement
      are no longer permissible under applicable law.  Any such
      determination under clause (b) permitting the resignation of the Servicer shall
      be evidenced by an Opinion of Counsel to such effect delivered to the
      Trustee.  No such resignation shall become effective until the Trustee
      or a successor servicer shall have assumed the Servicer’s responsibilities,
      duties, liabilities and obligations under this Agreement and the Depositor
      shall
      have received the information described in the following sentence.  As
      a condition to the effectiveness of any such resignation, at least 15 calendar
      days prior to the effective date of such resignation, the Servicer shall provide
      (x) written notice to the Depositor of any successor pursuant to this Section
      and (y) in writing and in form and substance reasonably satisfactory to the
      Depositor, all information reasonably requested by the Depositor in order to
      comply with its reporting obligation under Item 6.02 of Form 8-K with respect
      to
      the resignation of the Servicer.

     

    

    
      
        
          
          

        

        
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    ARTICLE
      SEVEN

     

    DEFAULT

     

    Section
      7.01                                Events
      of Default.

     

    “Event
      of Default,” wherever used in this Agreement, means any one of the
      following events:

     

    (a)  any
      failure by the Servicer to deposit in the Certificate Account or remit to the
      Trustee any payment required to be made by it under this Agreement, which
      failure continues unremedied for five days after the date on which written
      notice of the failure has been given to the Servicer by the Trustee or the
      Depositor or to the Servicer and the Trustee by the Holders of Certificates
      of
      any Class evidencing not less than 25% of the aggregate Percentage Interests
      of
      the Class; or

     

    (b)  any
      failure by the Servicer to observe or perform in any material respect any other
      of the covenants or agreements on the part of the Servicer contained in this
      Agreement (except with respect to a failure related to a Limited Exchange Act
      Reporting Obligation), which failure materially affects the rights of
      Certificateholders and continues unremedied for a period of 60 days after the
      date on which written notice of such failure shall have been given to the
      Servicer by the Trustee or the Depositor, or to the Servicer and the Trustee
      by
      the Holders of Certificates of any Class evidencing not less than 25% of the
      Percentage Interests of the Class; provided that the sixty-day cure period
      shall
      not apply to the initial delivery of the Mortgage File for Delay Delivery
      Mortgage Loans nor the failure to repurchase or substitute in lieu thereof;
      or

     

    (c)  a
      decree or order of a court or agency or supervisory authority having
      jurisdiction in the premises for the appointment of a receiver, conservator
      or
      liquidator in any insolvency, readjustment of debt, marshalling of assets and
      liabilities or similar proceedings, or for the winding-up or liquidation of
      its
      affairs, shall have been entered against the Servicer and such decree or order
      shall have remained in force undischarged or unstayed for a period of 60
      consecutive days; or

     

    (d)  the
      Servicer shall consent to the appointment of a receiver, conservator or
      liquidator in any insolvency, readjustment of debt, marshalling of assets and
      liabilities or similar proceedings of or relating to the Servicer or all or
      substantially all of the property of the Servicer; or

     

    (e)  the
      Servicer shall admit in writing its inability to pay its debts generally as
      they
      become due, file a petition to take advantage of, or commence a voluntary case
      under, any applicable insolvency or reorganization statute, make an assignment
      for the benefit of its creditors, or voluntarily suspend payment of its
      obligations; or

     

    (f)  the
      Servicer shall fail (i) to make an Advance on the Servicer Advance Date or
      (ii)
      to reimburse in full the Trustee within two days of the Servicer Advance Date
      for any Advance made by the Trustee pursuant to Section 4.01(b).

     

    If
      an
      Event of Default described in clauses (a) through (f) of this Section 7.01
      occurs, then, and in each and every such case, so long as such Event of Default
      shall not have been remedied, the Trustee may, or at the direction of the
      Holders of Certificates of any Class evidencing not less than 66 2/3% of the
      Percentage Interests of the Class, the Trustee shall by notice in writing to
      the
      Servicer (with a copy to each Rating Agency), terminate all of the rights and
      obligations of the Servicer under this Agreement and in the Mortgage Loans
      and
      the proceeds thereof, other than its rights as a Certificateholder
      hereunder.  In addition, if during the period that the Depositor is
      required to file Exchange Act Reports with respect to the Trust Fund, the
      Servicer shall fail to observe or perform any of the obligations that constitute
      a Limited Exchange Act Reporting Obligation or the obligations set forth in
      Section 3.17(a) or Section 11.07(a)(i) and (ii), and such failure continues
      for
      the lesser of 10 calendar days or such period in which the applicable Exchange
      Act Report can be filed timely (without taking into account any extensions),
      so
      long as such failure shall not have been remedied, the Trustee shall, but only
      at the direction of the Depositor, terminate all of the rights and obligations
      of the Servicer under this Agreement and in and to the Mortgage Loans and the
      proceeds thereof, other than its rights as a Certificateholder
      hereunder.  The Depositor shall not be entitled to terminate the
      rights and obligations of the Servicer if a failure of the Servicer to identify
      a Subcontractor “participating in the servicing function” within the meaning of
      Item 1122 of Regulation AB was attributable solely to the role or functions
      of
      such Subcontractor with respect to mortgage loans other than the Mortgage
      Loans.

     

    

    
      
        
          
          

        

        
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    On
      and
      after the receipt by the Servicer of such written notice, all authority and
      power of the Servicer hereunder, whether with respect to the Mortgage Loans
      or
      otherwise, shall pass to and be vested in the Trustee.  The Trustee
      shall make any Advance that the Servicer failed to make subject to Section
      3.05,
      whether or not the obligations of the Servicer have been terminated pursuant
      to
      this Section.  The Trustee is hereby authorized and empowered to
      execute and deliver, on behalf of the Servicer, as attorney-in-fact or
      otherwise, any documents and other instruments, and to do or accomplish all
      other acts or things necessary or appropriate to effect the purposes of such
      notice of termination, whether to complete the transfer and endorsement or
      assignment of the Mortgage Loans and related documents, or
      otherwise.  Unless expressly provided in such written notice, no such
      termination shall affect any obligation of the Servicer to pay amounts owed
      pursuant to Article VIII.  The Servicer agrees to cooperate with the
      Trustee in effecting the termination of the Servicer’s responsibilities and
      rights hereunder, including the transfer to the Trustee of all cash amounts
      which shall at the time be credited to the Certificate Account, or thereafter
      be
      received with respect to the Mortgage Loans.  If the Servicer fails to
      make any Advance required under Section 4.01 of this Agreement, thereby
      triggering an Event of Default described in clause (f) of this Section 7.01,
      the
      Trustee shall make such Advance on that Distribution Date.

     

    Notwithstanding
      any termination of the activities of the Servicer under this Agreement, the
      Servicer shall be entitled to receive, out of any late collection of a Scheduled
      Payment on a Mortgage Loan which was due before the notice terminating such
      Servicer’s rights and obligations as Servicer hereunder and received after such
      notice, that portion thereof to which such Servicer would have been entitled
      pursuant to Sections 3.09(a)(i) through (viii), and any other amounts payable
      to
      such Servicer hereunder the entitlement to which arose before the termination
      of
      its activities hereunder.

     

    If
      the
      Servicer is terminated, the Trustee shall provide the Depositor in writing
      and
      in form and substance reasonably satisfactory to the Depositor, all information
      reasonably requested by the Depositor in order to comply with its reporting
      obligation under Item 6.02 of Form 8-K with respect to a successor servicer
      in
      the event the Trustee should succeed to the duties of the Servicer as set forth
      herein.

     

    Section
      7.02                                Trustee
      to Act; Appointment of Successor.

     

    On
      and
      after the time the Servicer receives a notice of termination pursuant to Section
      7.01, the Trustee shall, subject to and to the extent provided in Section 3.05,
      be the successor to the Servicer in its capacity as servicer under this
      Agreement and the transactions set forth or provided for herein and shall be
      subject to all the responsibilities, duties and liabilities relating thereto
      placed on the Servicer by the terms hereof and applicable law including the
      obligation to make Advances pursuant to Section 4.01.  As compensation
      therefor, the Trustee shall be entitled to all funds relating to the Mortgage
      Loans that the Servicer would have been entitled to charge to the Certificate
      Account or Distribution Account if the Servicer had continued to act hereunder,
      including, if the Servicer was receiving the Servicing Fee, the Servicing
      Fee.  Notwithstanding the foregoing, if the Trustee has become the
      successor to the Servicer in accordance with Section 7.01, the Trustee may,
      if
      it shall be unwilling to so act, or shall, if it is prohibited by applicable
      law
      from making Advances pursuant to Section 4.01 or if it is otherwise unable
      to so
      act, appoint, or petition a court of competent jurisdiction to appoint, any
      established mortgage loan servicing institution the appointment of which does
      not adversely affect the then current rating of the Certificates by each Rating
      Agency, as the successor to the Servicer hereunder in the assumption of all
      or
      any part of the responsibilities, duties or liabilities of the Servicer
      hereunder.  Any successor to the Servicer shall be an institution
      which is a FNMA and FHLMC approved seller/servicer in good standing, which
      has a
      net worth of at least $15,000,000, which is willing to service the Mortgage
      Loans and which executes and delivers to the Depositor and the Trustee an
      agreement accepting such delegation and assignment, containing an assumption
      by
      such Person of the rights, powers, duties, responsibilities, obligations and
      liabilities of the Servicer (other than liabilities of the Servicer under
      Section 6.03 incurred before termination of the Servicer under Section 7.01),
      with like effect as if originally named as a party to this Agreement; provided
      that each Rating Agency acknowledges that its rating of the Certificates in
      effect immediately before such assignment and delegation will not be qualified
      or reduced as a result of such assignment and delegation.  Pending
      appointment of a successor to the Servicer hereunder, the Trustee shall act
      in
      such capacity as provided above, subject to section 3.03 and unless prohibited
      by law.  In connection with such appointment and assumption, the
      Trustee may make such arrangements for the compensation of such successor out
      of
      payments on Mortgage Loans as it and such successor shall agree; provided,
      however, that in no case shall the rate of such compensation exceed the
      Servicing Fee Rate.  The Trustee and such successor shall take such
      action, consistent with this Agreement, as shall be necessary to effectuate
      any
      such succession.  Neither the Trustee nor any other successor servicer
      shall be deemed to be in default hereunder because of any failure to make,
      or
      any delay in making, any distribution hereunder or any portion thereof or any
      failure to perform, or any delay in performing, any duties or responsibilities
      hereunder, in either case caused by the failure of the Servicer to deliver
      or
      provide, or any delay in delivering or providing, any cash, information,
      documents or records to it.

     

    

    
      
        
          
          

        

        
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    In
      connection with the termination or resignation of the Servicer hereunder, either
      (i) the successor Servicer, including the Trustee if the Trustee is acting
      as
      successor Servicer, shall represent and warrant that it is a member of MERS
      in
      good standing and shall agree to comply in all material respects with the rules
      and procedures of MERS in connection with the servicing of the Mortgage Loans
      that are registered with MERS, or (ii) the predecessor Servicer shall cooperate
      with the successor Servicer either (x) in causing MERS to execute and deliver
      an
      assignment of Mortgage in recordable form to transfer the Mortgage from MERS
      to
      the Trustee and to execute and deliver such other notices, documents and other
      instruments as may be necessary or desirable to effect a transfer of such
      Mortgage Loan or servicing of such Mortgage Loan on the MERS® System to the
      successor Servicer or (y) in causing MERS to designate on the MERS® System the
      successor Servicer as the servicer of such Mortgage Loan.  The
      predecessor Servicer shall file or cause to be filed any such assignment in
      the
      appropriate recording office.  The successor Servicer shall cause such
      assignment to be delivered to the Trustee promptly upon receipt of the original
      with evidence of recording thereon or a copy certified by the public recording
      office in which such assignment was recorded.

     

    Any
      successor to the Servicer as servicer shall give notice to the Mortgagors of
      such change of servicer and shall, during the term of its service as servicer,
      maintain in force the policy or policies that the Servicer is required to
      maintain pursuant to this Agreement.

     

    Section
      7.03                                Notification
      to Certificateholders.

     

    (a)  Upon
      any termination of or appointment of a successor to the Servicer, the Trustee
      shall give prompt written notice thereof to Certificateholders and to each
      Rating Agency.

     

    

    
      
        
          
          

        

        
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    (b)  Within
      60 days after the occurrence of any Event of Default, the Trustee shall transmit
      by mail to all Certificateholders and each Rating Agency notice of each such
      Event of Default hereunder known to the Trustee, unless such Event of Default
      shall have been cured or waived.

     

    

    
      
        
          
          

        

        
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    ARTICLE
      EIGHT

     

    CONCERNING
      THE
      TRUSTEE

     

    Section
      8.01                                Duties
      of the Trustee.

     

    The
      Trustee, before the occurrence of an Event of Default and after the curing
      of
      all Events of Default that may have occurred, shall undertake to perform such
      duties and only such duties as are specifically set forth in this
      Agreement.  In case an Event of Default has occurred and remains
      uncured, the Trustee shall exercise such of the rights and powers vested in
      it
      by this Agreement, and use the same degree of care and skill in their exercise
      as a prudent person would exercise or use under the circumstances in the conduct
      of such person’s own affairs.

     

    The
      Trustee, upon receipt of all resolutions, certificates, statements, opinions,
      reports, documents, orders or other instruments furnished to the Trustee that
      are specifically required to be furnished pursuant to any provision of this
      Agreement shall examine them to determine whether they are in the form required
      by this Agreement.  The Trustee shall not be responsible for the
      accuracy or content of any such resolution, certificate, statement, opinion,
      report, document, order, or other instrument.

     

    No
      provision of this Agreement shall be construed to relieve the Trustee from
      liability for its own negligent action, its own negligent failure to act or
      its
      own willful misconduct; provided, however, that, unless an Event of Default
      known to the Trustee has occurred and is continuing,

     

    (a)  the
      duties and obligations of the Trustee shall be determined solely by the express
      provisions of this Agreement, the Trustee shall not be liable except for the
      performance of the duties and obligations specifically set forth in this
      Agreement, no implied covenants or obligations shall be read into this Agreement
      against the Trustee, and the Trustee may conclusively rely, as to the truth
      of
      the statements and the correctness of the opinions expressed therein, upon
      any
      certificates or opinions furnished to the Trustee and conforming to the
      requirements of this Agreement which it believed in good faith to be genuine
      and
      to have been duly executed by the proper authorities respecting any matters
      arising hereunder;

     

    (b)  the
      Trustee shall not be liable for an error of judgment made in good faith by
      a
      Responsible Officer or Responsible Officers of the Trustee, unless it is finally
      proven that the Trustee was negligent in ascertaining the pertinent facts;
      and

     

    (c)  the
      Trustee shall not be liable with respect to any action taken, suffered, or
      omitted to be taken by it in good faith in accordance with the direction of
      Holders of Certificates evidencing not less than 25% of the Voting Rights of
      Certificates relating to the time, method, and place of conducting any
      proceeding for any remedy available to the Trustee, or exercising any trust
      or
      power conferred upon the Trustee under this Agreement.  As long as any
      Voting Rights are held by parties other than the Seller, its Affiliates, or
      its
      agents, Voting Rights of Certificates held by the Seller, its Affiliates or
      its
      agents as the Seller shall certify to the Trustee upon any entity obtaining
      such
      ownership, will be excluded from participating in such voting arrangements,
      and
      excluded from determining the 25% threshold.

     

    Section
      8.02                                Certain
      Matters Affecting the Trustee.

     

    Except
      as
      otherwise provided in Section 8.01:

     

    (a)  the
      Trustee may request and rely upon and shall be protected in acting or refraining
      from acting upon any resolution, Officer’s Certificate, certificate of auditors
      or any other certificate, statement, instrument, opinion, report, notice,
      request, consent, order, appraisal, bond or other paper or document believed
      by
      it to be genuine and to have been signed or presented by the proper party or
      parties and the Trustee shall have no responsibility to ascertain or confirm
      the
      genuineness of any signature of any such party or parties;

     

    

    
      
        
          
          

        

        
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    (b)  the
      Trustee may consult with counsel, financial advisers or accountants and the
      advice of any such counsel, financial advisers or accountants and any Opinion
      of
      Counsel shall be full and complete authorization and protection in respect
      of
      any action taken or suffered or omitted by it hereunder in good faith and in
      accordance with such Opinion of Counsel;

     

    (c)  the
      Trustee shall not be liable for any action taken, suffered or omitted by it
      in
      good faith and believed by it to be authorized or within the discretion or
      rights or powers conferred upon it by this Agreement;

     

    (d)  the
      Trustee shall not be bound to make any investigation into the facts or matters
      stated in any resolution, certificate, statement, instrument, opinion, report,
      notice, request, consent, order, approval, bond or other paper or document,
      unless requested in writing so to do by Holders of Certificates evidencing
      not
      less than 25% of the Voting Rights allocated to each Class of Certificates;
      provided, however, that no Certificates held by the Seller, the Depositor or
      any
      Affiliate shall be given effect for the purpose of calculating any such
      aggregation of Voting Rights;

     

    (e)  the
      Trustee may execute any of the trusts or powers hereunder or perform any duties
      hereunder either directly or by or through agents, accountants or attorneys
      and
      the Trustee shall not be responsible for any misconduct or negligence on the
      part of any agents, accountants or attorneys appointed with due care by it
      hereunder;

     

    (f)  the
      Trustee shall not be required to risk or expend its own funds or otherwise
      incur
      any financial liability in the performance of any of its duties or in the
      exercise of any of its rights or powers hereunder if it shall have reasonable
      grounds for believing that repayment of such funds or adequate indemnity against
      such risk or liability is not assured to it;

     

    (g)  the
      Trustee shall not be liable for any loss on any investment of funds pursuant
      to
      this Agreement (other than as issuer of the investment security);

     

    (h)  the
      Trustee shall not be deemed to have knowledge of an Event of Default until
      a
      Responsible Officer of the Trustee shall have received written notice
      thereof;

     

    (i)  the
      Trustee shall be under no obligation to exercise any of the trusts, rights
      or
      powers vested in it by this Agreement or to institute, conduct or defend any
      litigation hereunder or in relation hereto at the request, order or direction
      of
      any of the Certificateholders, pursuant to this Agreement, unless such
      Certificateholders shall have offered to the Trustee reasonable security or
      indemnity satisfactory to the Trustee against the costs, expenses and
      liabilities which may be incurred therein or thereby;

     

    (j)  the
      Trustee or its Affiliates are permitted to receive additional compensation
      that
      could be deemed to be in the Trustee’s economic self-interest for (i) serving as
      investment adviser, administrator, shareholder servicing agent, custodian or
      sub-custodian with respect to certain of the Permitted Investments, (ii) using
      Affiliates to effect transactions in certain Permitted Investments and (iii)
      effecting transactions in certain Permitted Investments.  The Trustee
      does not guarantee the performance of any Permitted Investment; and

     

    

    
      
        
          
          

        

        
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    (k)  the
      Trustee shall not knowingly take any action that would cause the Trust Fund
      to
      fail to qualify as a qualifying special purpose entity.

     

    In
      order
      to comply with laws, rules, regulations and executive orders in effect from
      time
      to time applicable to banking institutions, including those relating to the
      funding of terrorist activities and money laundering ("Applicable Law"), the
      Trustee is required to obtain, verify and record certain information relating
      to
      individuals and entities which maintain a business relationship with the
      Trustee.  Accordingly, each of the parties agrees to provide to the
      Trustee upon its request from time to time such identifying
      information  and documentation as may be available for such party in
      order to enable the Trustee to comply with Applicable Law.

     

    Section
      8.03                                Trustee
      Not Liable for Certificates or Mortgage Loans.

     

    The
      recitals contained herein and in the Certificates shall be taken as the
      statements of the Depositor or the Seller, as the case may be, and the Trustee
      assumes no responsibility for their correctness.  The Trustee makes no
      representations as to the validity or sufficiency of this Agreement or of the
      Certificates or of any Mortgage Loan or related document other than with respect
      to the Trustee’s execution and countersignature of the
      Certificates.  The Trustee shall not be accountable for the use or
      application by the Depositor or the Servicer of any funds paid to the Depositor
      or the Servicer in respect of the Mortgage Loans or deposited in or withdrawn
      from the Certificate Account by the Depositor or the Servicer.

     

    Except
      as
      provided in Section 2.01(c), the Trustee shall have no responsibility for filing
      or recording any financing or continuation statement in any public office at
      any
      time or to otherwise perfect or maintain the perfection of any security interest
      or lien granted to it hereunder (unless the Trustee shall have become the
      successor Servicer).  The Trustee makes no representations as to the
      validity or sufficiency of this Agreement or of the Certificates or of any
      Mortgage Loan or related document or of MERS or the MERS® System other than with
      respect to the Trustee’s execution and counter-signature of the
      Certificates.

     

    The
      Trustee executes the Certificates not in its individual capacity but solely
      as
      Trustee of the Trust Fund created by this Agreement, in the exercise of the
      powers and authority conferred and vested in it by this
      Agreement.  Each of the undertakings and agreements made on the part
      of the Trustee on behalf of the Trust Fund in the Certificates is made and
      intended not as a personal undertaking or agreement by the Trustee but is made
      and intended for the purpose of binding only the Trust Fund.

     

    Section
      8.04                                Trustee
      May Own Certificates.

     

    The
      Trustee in its individual or any other capacity may become the owner or pledgee
      of Certificates with the same rights as it would have if it were not the
      Trustee.

     

    Section
      8.05                                Trustee’s
      Fees and Expenses.

     

    As
      compensation for its activities under this Agreement, on each Distribution
      Date
      the Trustee may withdraw from the Distribution Account the Trustee Fee for
      that
      Distribution Date.  The Trustee and any director, officer, employee,
      or agent of the Trustee shall be indemnified by the Servicer against any loss,
      liability, or expense (including reasonable attorney’s fees) resulting from any
      error in any tax or information return prepared by the Servicer or incurred
      in
      connection with any claim or legal action relating to (a) this Agreement, (b)
      the Certificates, or (c) the performance of any of the Trustee’s duties under
      this Agreement, other than any loss, liability or expense incurred because
      of
      willful misfeasance, bad faith or negligence in the performance of any of the
      Trustee’s duties hereunder or incurred by reason of any action of the Trustee
      taken at the direction of the Certificateholders under this
      Agreement.  This indemnity shall survive the termination of this
      Agreement or the resignation or removal of the Trustee under this
      Agreement.  Without limiting the foregoing, except as otherwise agreed
      upon in writing by the Depositor and the Trustee, and except for any expense,
      disbursement, or advance arising from the Trustee’s negligence, bad faith, or
      willful misconduct, the Servicer shall pay or reimburse the Trustee, for all
      reasonable expenses, disbursements, and advances incurred or made by the Trustee
      in accordance with this Agreement with respect to

     

    

    
      
        
          
          

        

        
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    (A)  the
      reasonable compensation, expenses, and disbursements of its counsel not
      associated with the closing of the issuance of the Certificates,
      and

     

    (B)  the
      reasonable compensation, expenses, and disbursements of any accountant,
      engineer, or appraiser that is not regularly employed by the Trustee, to the
      extent that the Trustee must engage them to perform services under this
      Agreement.

     

    Except
      as
      otherwise provided in this Agreement, the Trustee shall not be entitled to
      payment or reimbursement for any routine ongoing expenses incurred by the
      Trustee in the ordinary course of its duties as Trustee, Registrar, or Paying
      Agent under this Agreement or for any other expenses.

     

    Section
      8.06                                Eligibility
      Requirements for the Trustee.

     

    The
      Trustee hereunder shall at all times be a corporation or association organized
      and doing business under the laws of a state or the United States of America,
      authorized under such laws to exercise corporate trust powers, having a combined
      capital and surplus of at least $50,000,000, subject to supervision or
      examination by federal or state authority and with a credit rating which would
      not cause either of the Rating Agencies to reduce their respective then current
      ratings of the Certificates (or having provided such security from time to
      time
      as is sufficient to avoid such reduction) as evidenced in writing by each Rating
      Agency.  If such corporation or association publishes reports of
      condition at least annually, pursuant to law or to the requirements of the
      aforesaid supervising or examining authority, then for the purposes of this
      Section 8.06 the combined capital and surplus of such corporation or association
      shall be deemed to be its combined capital and surplus as set forth in its
      most
      recent report of condition so published.  In case at any time the
      Trustee shall cease to be eligible in accordance with this Section 8.06, the
      Trustee shall resign immediately in the manner and with the effect specified
      in
      Section 8.07.  The entity serving as Trustee may have normal banking
      and trust relationships with the Depositor and its affiliates or the Servicer
      and its affiliates; provided, however, that such entity cannot be an affiliate
      of the Seller, the Depositor or the Servicer other than the Trustee in its
      role
      as successor to the Servicer.

     

    Section
      8.07                                Resignation
      and Removal of the Trustee.

     

    The
      Trustee may at any time resign and be discharged from the trusts hereby created
      by giving written notice of resignation to the Depositor, the Servicer, and
      each
      Rating Agency not less than 60 days before the date specified in such notice,
      when, subject to Section 8.08, such resignation is to take effect, and
      acceptance by a successor trustee in accordance with Section 8.08 meeting the
      qualifications set forth in Section 8.06.  If no successor trustee
      meeting such qualifications shall have been so appointed and have accepted
      appointment within 30 days after the giving of such notice or resignation,
      the
      resigning Trustee may petition any court of competent jurisdiction for the
      appointment of a successor trustee.

     

    As
      a
      condition to the effectiveness of any such resignation, at least 15 calendar
      days prior to the effective date of such resignation, the Trustee shall provide
      (x) written notice to the Depositor of any successor pursuant to this Section
      and (y) in writing and in form and substance reasonably satisfactory to the
      Depositor, all information reasonably requested by the Depositor in order to
      comply with its reporting obligation under Item 6.02 of Form 8-K with respect
      to
      the resignation of the Trustee.

     

    

    
      
        
          
          

        

        
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    If
      at any
      time (i) the Trustee shall cease to be eligible in accordance with Section
      8.06
      and shall fail to resign after written request thereto by the Depositor, (ii)
      the Trustee shall become incapable of acting, or shall be adjudged as bankrupt
      or insolvent, or a receiver of the Trustee or of its property shall be
      appointed, or any public officer shall take charge or control of the Trustee
      or
      of its property or affairs for the purpose of rehabilitation, conservation
      or
      liquidation, (iii)(A) a tax is imposed with respect to the Trust Fund by any
      state in which the Trustee or the Trust Fund is located and (B) the imposition
      of such tax would be avoided by the appointment of a different trustee, or
      (iv)
      during the period which the Depositor is required to file Exchange Act Reports
      with respect to the Trust Fund, the Trustee fails to comply with its obligations
      under the last sentence of Section 7.01, the preceding paragraph, Section 8.09
      or Article 11 and such failure is not remedied within the lesser of 10 calendar
      days or such period in which the applicable Exchange Act Report can be filed
      timely (without taking into account any extensions), then, in the case of
      clauses (i) through (iii), then the Depositor or the Servicer, or in the case
      of
      clause (iv), the Depositor, may remove the Trustee and appoint a successor
      trustee by written instrument, in triplicate, one copy of which shall be
      delivered to the Trustee, one copy to the Servicer and one copy to the successor
      trustee.

     

    The
      Holders of Certificates entitled to at least 51% of the Voting Rights may at
      any
      time remove the Trustee and appoint a successor trustee by written instrument
      or
      instruments, in triplicate, signed by such Holders or their attorneys-in-fact
      duly authorized, one complete set of which shall be delivered by the successor
      Trustee to the Servicer, one complete set to the Trustee so removed, one
      complete set to the successor so appointed and one complete set to the
      Depositor, together with a written description of the basis for such
      removal.  As long as any Voting Rights are held by parties other than
      the Seller, its Affiliates, or its agents, Voting Rights of Certificates held
      by
      the Seller, its Affiliates or its agents as the Seller shall certify to the
      Trustee upon any such entity obtaining such ownership will be excluded from
      participating in such voting arrangements, and excluded from determining the
      51%
      threshold.  The successor trustee shall notify each Rating Agency of
      any removal of the Trustee.

     

    Any
      resignation or removal of the Trustee and appointment of a successor trustee
      pursuant to this Section 8.07 shall become effective upon acceptance of
      appointment by the successor trustee as provided in Section 8.08.

     

    Section
      8.08                                Successor
      Trustee.

     

    Any
      successor trustee appointed as provided in Section 8.07 shall execute,
      acknowledge and deliver to the Depositor and to its predecessor trustee and
      the
      Servicer an instrument accepting such appointment hereunder and thereupon the
      resignation or removal of the predecessor trustee shall become effective and
      such successor trustee, without any further act, deed or conveyance, shall
      become fully vested with all the rights, powers, duties and obligations of
      its
      predecessor hereunder, with the like effect as if originally named as trustee
      herein.  The Depositor, the Servicer and the predecessor trustee shall
      execute and deliver such instruments and do such other things as may reasonably
      be required for more fully and certainly vesting and confirming in the successor
      trustee all such rights, powers, duties, and obligations.

     

    No
      successor trustee shall accept appointment as provided in this Section 8.08
      unless, at the time of its acceptance, the successor trustee is eligible under
      Section 8.06 and its appointment does not adversely affect the then current
      rating of the Certificates and has provided to the Depositor in writing and
      in
      form and substance reasonably satisfactory to the Depositor, all information
      reasonably requested by the Depositor in order to comply with its reporting
      obligation under Item 6.02 of Form 8-K with respect to a replacement
      Trustee.

     

    

    
      
        
          
          

        

        
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    Upon
      acceptance of appointment by a successor trustee as provided in this Section
      8.08, the Depositor shall mail notice of the succession of such trustee
      hereunder to all Holders of Certificates.  If the Depositor fails to
      mail such notice within 10 days after acceptance of appointment by the successor
      trustee, the successor trustee shall cause such notice to be mailed at the
      expense of the Depositor.

     

    Section
      8.09                                Merger
      or Consolidation of the Trustee.

     

    Any
      corporation into which the Trustee may be merged or converted or with which
      it
      may be consolidated or any corporation resulting from any merger, conversion
      or
      consolidation to which the Trustee shall be a party, or any corporation
      succeeding to the business of the Trustee, shall be the successor of the Trustee
      hereunder, provided that such corporation shall be eligible under Section 8.06
      without the execution or filing of any paper or further act on the part of
      any
      of the parties hereto, anything herein to the contrary
      notwithstanding.

     

    As
      a
      condition to the effectiveness of any merger or consolidation, at least 15
      calendar days prior to the effective date of any merger or consolidation of
      the
      Trustee, the Trustee shall provide (x) written notice to the Depositor of any
      successor pursuant to this Section and (y) in writing and in form and substance
      reasonably satisfactory to the Depositor, all information reasonably requested
      by the Depositor in order to comply with its reporting obligation under Item
      6.02 of Form 8-K with respect to a replacement Trustee.

     

    Section
      8.10                                Appointment
      of Co-Trustee or Separate Trustee.

     

    Notwithstanding
      any other provisions of this Agreement, at any time, for the purpose of meeting
      any legal requirements of any jurisdiction in which any part of the Trust Fund
      or property securing any Mortgage Note may at the time be located, the Servicer
      and the Trustee acting jointly shall have the power and shall execute and
      deliver all instruments to appoint one or more Persons approved by the Trustee
      to act as co-trustee or co-trustees jointly with the Trustee, or separate
      trustee or separate trustees, of all or any part of the Trust Fund, and to
      vest
      in such Person or Persons, in such capacity and for the benefit of the
      Certificateholders, such title to the Trust Fund or any part thereof, whichever
      is applicable, and, subject to the other provisions of this Section 8.10, such
      powers, duties, obligations, rights and trusts as the Servicer and the Trustee
      may consider appropriate.  If the Servicer shall not have joined in
      such appointment within 15 days after the receipt by it of a request to do
      so,
      or in the case an Event of Default shall have occurred and be continuing, the
      Trustee alone shall have the power to make such appointment.  No
      co-trustee or separate trustee hereunder shall be required to meet the terms
      of
      eligibility as a successor trustee under Section 8.06 and no notice to
      Certificateholders of the appointment of any co-trustee or separate trustee
      shall be required under Section 8.08.

     

    Every
      separate trustee and co-trustee shall, to the extent permitted by law, be
      appointed and act subject to the following provisions and
      conditions:

     

    (a)  To
      the extent necessary to effectuate the purposes of this Section 8.10, all
      rights, powers, duties and obligations conferred or imposed upon the Trustee,
      except for the obligation of the Trustee under this Agreement to advance funds
      on behalf of the Servicer, shall be conferred or imposed upon and exercised
      or
      performed by the Trustee and such separate trustee or co-trustee jointly (it
      being understood that such separate trustee or co-trustee is not authorized
      to
      act separately without the Trustee joining in such act), except to the extent
      that under any law of any jurisdiction in which any particular act or acts
      are
      to be performed (whether as Trustee hereunder or as successor to the Servicer
      hereunder), the Trustee shall be incompetent or unqualified to perform such
      act
      or acts, in which event such rights, powers, duties and obligations (including
      the holding of title to the applicable Trust Fund or any portion thereof in
      any
      such jurisdiction) shall be exercised and performed singly by such separate
      trustee or co-trustee, but solely at the direction of the Trustee;

     

    

    
      
        
          
          

        

        
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    (b)  No
      trustee hereunder shall be held personally liable because of any act or omission
      of any other trustee hereunder and such appointment shall not, and shall not
      be
      deemed to, constitute any such separate trustee or co-trustee as agent of the
      Trustee;

     

    (c)  The
      Trustee may at any time accept the resignation of or remove any separate trustee
      or co-trustee; and

     

    (d)  The
      Servicer, and not the Trustee, shall be liable for the payment of reasonable
      compensation, reimbursement and indemnification to any such separate trustee
      or
      co-trustee.

     

    Any
      notice, request or other writing given to the Trustee shall be deemed to have
      been given to each of the separate trustees and co-trustees, when and as
      effectively as if given to each of them.  Every instrument appointing
      any separate trustee or co-trustee shall refer to this Agreement and the
      conditions of this Article VIII.  Each separate trustee and
      co-trustee, upon its acceptance of the trusts conferred, shall be vested with
      the estates or property specified in its instrument of appointment, either
      jointly with the Trustee or separately, as may be provided therein, subject
      to
      all the provisions of this Agreement, specifically including every provision
      of
      this Agreement relating to the conduct of, affecting the liability of, or
      affording protection to, the Trustee.  Every such instrument shall be
      filed with the Trustee and a copy thereof given to the Servicer and the
      Depositor.

     

    Any
      separate trustee or co-trustee may, at any time, constitute the Trustee its
      agent or attorney-in-fact, with full power and authority, to the extent not
      prohibited by law, to do any lawful act under or in respect of this Agreement
      on
      its behalf and in its name.  If any separate trustee or co-trustee
      shall die, become incapable of acting, resign or be removed, all of its estates,
      properties, rights, remedies and trusts shall vest in and be exercised by the
      Trustee, to the extent permitted by law, without the appointment of a new or
      successor trustee.

     

    Section
      8.11                                Tax
      Matters.

     

    It
      is
      intended that the assets with respect to which one or more REMIC elections
      pertaining to the Trust Fund is to be made, as set forth in the Preliminary
      Statement, shall constitute, and that the conduct of matters relating to such
      assets shall be such as to qualify such assets as, a “real estate mortgage
      investment conduit” as defined in and in accordance with the REMIC
      Provisions.  In furtherance of such intention, the Trustee covenants
      and agrees that it shall act as agent (and the Trustee is hereby appointed
      to
      act as agent) on behalf of each REMIC created under this Agreement and that
      in
      such capacity it shall:

     

    (a)  prepare
      and file in a timely manner, a U.S. Real Estate Mortgage Investment Conduit
      Income Tax Return (Form 1066 or any successor form adopted by the Internal
      Revenue Service) with respect to each REMIC created hereunder and prepare and
      file with the Internal Revenue Service and applicable state or local tax
      authorities income tax or information returns for each taxable year with respect
      to each REMIC described in the Preliminary Statement, containing such
      information and at the times and in the manner as may be required by the Code
      or
      state or local tax laws, regulations, or rules, and furnish to
      Certificateholders the schedules, statements or information at such times and
      in
      such manner as may be required thereby;

     

    

    
      
        
          
          

        

        
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    (b)  within
      thirty days of the Closing Date, furnish to the Internal Revenue Service, on
      Forms 8811 or as otherwise may be required by the Code, the name, title,
      address, and telephone number of the person that the holders of the Certificates
      may contact for tax information relating thereto, together with such additional
      information as may be required by such Form, and update such information at
      the
      time or times in the manner required by the Code;

     

    (c)  make
      an election that each REMIC created under this Agreement be treated as a REMIC
      on the federal tax return for its first taxable year (and, if necessary, under
      applicable state law);

     

    (d)  prepare
      and forward to the Certificateholders and to the Internal Revenue Service and,
      if necessary, state tax authorities, all information returns and reports as
      and
      when required to be provided to them in accordance with the REMIC Provisions,
      including the calculations of any original issue discount and of taxable income
      or net loss to the holders of the residual interests in each REMIC created
      hereunder using the Prepayment Assumption (as defined in the Prospectus
      Supplement). For purposes of calculating taxable income or net loss to the
      holders of the residual interests in each such REMIC, the Trustee also shall
      assume that the indices in respect of any adjustable rate Mortgage Loans are
      static until the liquidation or purchase of the Mortgage Loans in accordance
      with Section 9.01;

     

    (e)  provide
      information necessary for the computation of tax imposed on the transfer of
      a
      Residual Certificate to a Person that is not a Permitted Transferee, or an
      agent
      (including a broker, nominee or other middleman) of a Person that is not a
      Permitted Transferee, or a pass-through entity in which a Person that is not
      a
      Permitted Transferee is the record holder of an interest (the reasonable cost
      of
      computing and furnishing such information may be charged to the Person liable
      for such tax);

     

    (f)  to
      the extent that they are under its control, conduct matters relating to such
      assets at all times that any Certificates are outstanding so as to maintain
      the
      status as any REMIC created under this Agreement under the REMIC
      Provisions;

     

    (g)  not
      knowingly or intentionally take any action or omit to take any action that
      would
      cause the termination of the REMIC status of any REMIC created under this
      Agreement;

     

    (h)  pay,
      from the sources specified in the third paragraph of this Section 8.11, the
      amount of any federal or state tax, including prohibited transaction taxes
      as
      described below, imposed on any REMIC before its termination when and as the
      same shall be due and payable (but such obligation shall not prevent the Trustee
      or any other appropriate Person from contesting any such tax in appropriate
      proceedings and shall not prevent the Trustee from withholding payment of such
      tax, if permitted by law, pending the outcome of such proceedings);

     

    (i)  ensure
      that federal, state or local income tax or information returns shall be signed
      by the Trustee or such other person as may be required to sign such returns
      by
      the Code or state or local laws, regulations or rules;

     

    (j)  maintain
      records relating to each REMIC created under this Agreement, including the
      income, expenses, assets, and liabilities thereof and the fair market value
      and
      adjusted basis of the assets determined at such intervals as may be required
      by
      the Code, as may be necessary to prepare the foregoing returns, schedules,
      statements or information; and

     

    (k)  as
      and when necessary and appropriate, represent each REMIC created under this
      Agreement in any administrative or judicial proceedings relating to an
      examination or audit by any governmental taxing authority, request an
      administrative adjustment as to any taxable year of such REMIC, enter into
      settlement agreements with any governmental taxing agency, extend any statute
      of
      limitations relating to any tax item of such REMIC, and otherwise act on behalf
      of such REMIC in relation to any tax matter or controversy involving
      it.

     

    

    
      
        
          
          

        

        
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    To
      enable
      the Trustee to perform its duties under this Agreement, the Depositor shall
      provide to the Trustee within ten days after the Closing Date all information
      or
      data that the Trustee requests in writing and determines to be relevant for
      tax
      purposes to the valuations and offering prices of the Certificates, including
      the price, yield, prepayment assumption, and projected cash flows of the
      Certificates and the Mortgage Loans.  Thereafter, the Depositor shall
      provide to the Trustee promptly upon written request therefor any additional
      information or data that the Trustee may, from time to time, reasonably request
      to enable the Trustee to perform its duties under this Agreement.  The
      Depositor hereby indemnifies the Trustee for any losses, liabilities, damages,
      claims, or expenses of the Trustee arising from any errors or miscalculations
      of
      the Trustee that result from any failure of the Depositor to provide, or to
      cause to be provided, accurate information or data to the Trustee on a timely
      basis.

     

    If
      any
      tax is imposed on “prohibited transactions” (as defined in section 860F(a)(2) of
      the Code) of any REMIC created under this Agreement, on the “net income from
      foreclosure property” of any REMIC created under this Agreement as defined in
      section 860G(c) of the Code, on any contribution to any REMIC created under
      this
      Agreement after the Startup Day pursuant to section 860G(d) of the Code, or
      any
      other tax is imposed, including any minimum tax imposed on any REMIC created
      hereunder pursuant to sections 23153 and 24874 of the California Revenue and
      Taxation Code, if not paid as otherwise provided for herein, the tax shall
      be
      paid by (i) the Trustee, if any such other tax arises out of or results from
      negligence of the Trustee in the performance of any of its obligations under
      this Agreement, (ii) the Servicer or the Seller, in the case of any such minimum
      tax, if such tax arises out of or results from a breach by the Servicer or
      Seller of any of their obligations under this Agreement, (iii) the Seller,
      if
      any such tax arises out of or results from the Seller’s obligation to repurchase
      a Mortgage Loan pursuant to Section 2.02 or 2.03, or (iv) in all other cases,
      or
      if the Trustee, the Servicer, or the Seller fails to honor its obligations
      under
      the preceding clauses (i), (ii), or (iii), any such tax will be paid with
      amounts otherwise to be distributed to the Certificateholders, as provided
      in
      Section 3.09(b).

     

    The
      Trustee shall file or cause to be filed with the Internal Revenue Service,
      Form
      1041 or such other form as may be applicable, and shall furnish or cause to
      be
      furnished to the Holders of the Class L Certificate the Late Payment Fees that
      are received, in the time or times and in the manner required by the
      Code.

     

    

     

    

     

    

    
      
        
          
          

        

        
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    ARTICLE
      NINE

     

    TERMINATION

     

    Section
      9.01                                Termination
      upon Liquidation or Purchase of the Mortgage Loans.

     

    Subject
      to Section 9.03, the obligations and responsibilities of the Depositor, the
      Servicer, and the Trustee created hereby shall terminate upon the earlier
      of

     

    (a)  the
      purchase by the Servicer of all Mortgage Loans (and REO Properties) at the
      price
      equal to the sum of

     

    (i)           100%
      of the Stated Principal Balance of each Mortgage Loan (other than in respect
      of
      a Delinquent Mortgage Loan or REO Property) plus one month’s accrued interest
      thereon at the applicable Adjusted Mortgage Rate less any amounts collected
      by
      the Servicer representing principal and interest due after the related Due
      Date,

     

    (ii)           the
      lesser of (x) the appraised value of any Delinquent Mortgage Loan or REO
      Property as determined by the higher of two appraisals completed by two
      independent appraisers selected by the Servicer at the expense of the Servicer
      and (y) the Stated Principal Balance of each such Delinquent Mortgage Loan
      or
      Mortgage Loan related to such REO Property, in each case plus accrued and unpaid
      interest thereon at the applicable Adjusted Net Mortgage Rate and

     

    (iii)           any
      costs and damages incurred by the Trust Fund in connection with any violation
      by
      each Mortgage Loan of any predatory or abusive lending law and

     

    (b)  the
      later of

     

    (i)           the
      maturity or other liquidation (or any Advance with respect thereto) of the
      last
      Mortgage Loan and the disposition of all REO Property and

     

    (ii)           the
      distribution to Certificateholders of all amounts required to be distributed
      to
      them pursuant to this Agreement.  In no event shall the trusts created
      hereby continue beyond the expiration of 21 years from the death of the survivor
      of the descendants of Joseph P.  Kennedy, the late Ambassador of the
      United States to the Court of St. James’s, living on the date of this
      Agreement.

     

    The
      right
      to purchase all Mortgage Loans and REO Properties pursuant to clause (a) above
      shall be conditioned upon the aggregate Stated Principal Balance of those
      Mortgage Loans, at the time of any such repurchase, aggregating less than ten
      percent (10%) of the aggregate Stated Principal Balance of the Mortgage Loans
      as
      of the Cut-off Date.  The first Distribution Date on which the right
      to purchase all Mortgage Loans and REO Properties pursuant to clause (a) above
      first becomes exercisable is referred to as the “Optional
      Termination Date.”  The Servicer shall effect any such
      repurchase by depositing the purchase price, as calculated above, as of the
      month preceding the date on which such purchase price shall be distributed
      to
      Certificateholders into the Certificate Account.  With such
      repurchase, the Servicer shall acquire any rights or potential rights of the
      Certificateholders or the Trustee to causes of action against any Person
      relating to the Mortgage Loans or the origination of the Mortgage Loans,
      including, without limitation, the right to enforce any breach of a
      representation or warranty made at any time with respect to the Mortgage
      Loans.

     

    

    
      
        
          
          

        

        
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    Section
      9.02                                Final
      Distribution on the Certificates.

     

    If
      on any
      Determination Date the Servicer determines that there are no Outstanding
      Mortgage Loans and no other funds or assets in the Trust Fund other than the
      funds in the Certificate Account, the Servicer shall direct the Trustee promptly
      to send a final distribution notice to each Certificateholder.  If the
      Servicer elects to terminate the Trust Fund pursuant to clause (a) of Section
      9.01, no later than the 15th day of
      the month
      preceding the month of the final Distribution Date the Servicer shall notify
      the
      Depositor and the Trustee of the date the Servicer intends to terminate the
      Trust Fund and of the applicable repurchase price of the Mortgage Loans and
      REO
      Properties.

     

    Notice
      of
      any termination of the Trust Fund specifying the Distribution Date on which
      Certificateholders may surrender their Certificates for payment of the final
      distribution and cancellation shall be given promptly by the Trustee by letter
      to Certificateholders mailed not earlier than the 15th day and not later than
      the last day of the month next preceding the month of such final
      distribution.  Any such notice shall specify (a) the Distribution Date
      upon which final distribution on the Certificates will be made upon presentation
      and surrender of Certificates at the office therein designated, (b) the amount
      of such final distribution, (c) the location of the office or agency at which
      such presentation and surrender must be made, and (d) that the Record Date
      otherwise applicable to the Distribution Date is not applicable, distributions
      being made only upon presentation and surrender of the Certificates at the
      office therein specified.  The Servicer will give such notice to each
      Rating Agency at the time such notice is given to
      Certificateholders.

     

    If
      this
      notice is given, the Servicer shall cause all funds in the Certificate Account
      to be remitted to the Trustee for deposit in the Distribution Account on the
      Business Day before the applicable Distribution Date in an amount equal to
      the
      final distribution in respect of the Certificates.  Upon such final
      deposit with respect to the Trust Fund and the receipt by the Trustee of a
      Request for Release therefor, the Trustee shall promptly release to the Servicer
      the Mortgage Files for the Mortgage Loans.

     

    Upon
      presentation and surrender of the Certificates, the Trustee shall cause to
      be
      distributed to the Certificateholders of each Class, in each case on the final
      Distribution Date and in the order set forth in Section 4.02, in proportion
      to their respective Percentage Interests, with respect to Certificateholders
      of
      the same Class, an amount equal to (i) as to each Class of Regular Certificates,
      its Certificate Balance plus for each such Class accrued interest thereon in
      the
      case of an interest-bearing Certificate and (ii) as to the Residual
      Certificates, any amount remaining on deposit in the Distribution Account (other
      than the amounts retained to meet claims) after application pursuant to clause
      (i) above.  Notwithstanding the reduction of the Certificate Balance
      of any Class of Certificates to zero, such Class will be outstanding hereunder
      solely for the purpose of receiving distributions and for no other purpose
      until
      the termination of the respective obligations and responsibilities of the
      Depositor, the Servicer and the Trustee hereunder in accordance with Article
      Nine.  The foregoing provisions are intended to distribute to each
      Class of Regular Certificates any accrued and unpaid interest and principal
      to
      which they are entitled based on the Pass-Through Rates and actual Class
      Certificate Balances set forth in the Preliminary Statement upon liquidation
      of
      the Trust Fund.

     

    If
      any
      affected Certificateholder does not surrender its Certificates for cancellation
      within six months after the date specified in the above mentioned written
      notice, the Trustee shall give a second written notice to the remaining
      Certificateholders to surrender their Certificates for cancellation and receive
      the final distribution with respect thereto.  If within six months
      after the second notice all the applicable Certificates shall not have been
      surrendered for cancellation, the Trustee may take appropriate steps, or may
      appoint an agent to take appropriate steps, to contact the remaining
      Certificateholders concerning surrender of their Certificates, and the cost
      thereof shall be paid out of the funds and other assets which remain a part
      of
      the Trust Fund.  If within one year after the second notice all
      Certificates shall not have been surrendered for cancellation, then the
      Class A-R Certificateholders shall be entitled to all unclaimed funds and
      other assets of the Trust Fund which remain subject hereto.

     

    

    
      
        
          
          

        

        
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    Section
      9.03                                Additional
      Termination Requirements.

     

    (a)  If
      the Servicer exercises its purchase option with respect to the Mortgage Loans
      as
      provided in Section 9.01, the Trust Fund shall be terminated in accordance
      with
      the following additional requirements, unless the Trustee has been supplied
      with
      an Opinion of Counsel, at the expense of the Servicer, to the effect that the
      failure to comply with the requirements of this Section 9.03 will not (i) result
      in the imposition of taxes on “prohibited transactions” on any REMIC created
      hereunder as defined in section 860F of the Code, or (ii) cause any REMIC
      created under this Agreement to fail to qualify as a REMIC at any time that
      any
      Certificates are outstanding:

     

    (b)  The
      Trustee shall sell all of the assets of the Trust Fund to the Servicer, and,
      within 90 days of such sale, shall distribute to the Certificateholders the
      proceeds of such sale in complete liquidation of each REMIC created under this
      Agreement.

     

    (c)  The
      Trustee shall attach a statement to the final federal income tax return for
      each
      REMIC created under this Agreement stating that pursuant to Treasury Regulation
      § 1.860F-1, the first day of the 90-day liquidation period for such REMIC was
      the date on which the Trustee sold the assets of the Trust Fund to the
      Servicer.

     

    

    
      
        
          
          

        

        
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    ARTICLE
      TEN

     

    MISCELLANEOUS
      PROVISIONS

     

    Section
      10.01                                Amendment.

     

    This
      Agreement may be amended from time to time by the Depositor, the Servicer and
      the Trustee without the consent of any of the Certificateholders (i) to cure
      any
      ambiguity or mistake, (ii) to correct any defective provision in this Agreement
      or to supplement any provision in this Agreement which may be inconsistent
      with
      any other provision in this Agreement, (iii) to conform this Agreement to the
      Prospectus Supplement, (iv) to add to the duties of the Depositor, the Seller
      or
      the Servicer, (v) to modify, alter, amend, add to or rescind any of the terms
      or
      provisions contained in this Agreement to comply with any rules or regulations
      promulgated by the Commission from time to time, (vi) to add any other
      provisions with respect to matters or questions arising under this Agreement,
      or
      (vii) to modify, alter, amend, add to, or rescind any of the terms or provisions
      contained in this Agreement.

     

    No
      action
      pursuant to clauses (v), (vi) or (vii) above may, as evidenced by an Opinion
      of
      Counsel (which Opinion of Counsel shall not be an expense of the Trustee or
      the
      Trust Fund), adversely affect in any material respect the interests of any
      Certificateholder.  The amendment shall not be deemed to adversely
      affect in any material respect the interests of the Certificateholders if the
      Person requesting the amendment obtains a letter from each Rating Agency stating
      that the amendment would not result in the downgrading, qualification or
      withdrawal of the respective ratings then assigned to the
      Certificates.  Any such letter in and of itself will not represent a
      determination as to the materiality of any amendment and will represent a
      determination only as to the credit issues affecting any rating.  Each
      party to this Agreement agrees that it will cooperate with each other party
      in
      amending this Agreement pursuant to clause (v) above.

     

    The
      Trustee, the Depositor, and the Servicer also may at any time and from time
      to
      time amend this Agreement without the consent of the Certificateholders to
      modify, eliminate or add to any of its provisions to the extent necessary or
      helpful to (i) maintain the qualification of any REMIC created under this
      Agreement as a REMIC under the Code, (ii) avoid or minimize the risk of the
      imposition of any tax on any REMIC created under this Agreement pursuant to
      the
      Code that would be a claim at any time before the final redemption of the
      Certificates, or (iii) comply with any other requirements of the Code, if the
      Trustee has been provided an Opinion of Counsel, which opinion shall be an
      expense of the party requesting such opinion but in any case shall not be an
      expense of the Trustee or the Trust Fund, to the effect that the action is
      necessary or helpful for one of the foregoing purposes.

     

    This
      Agreement may also be amended from time to time by the Depositor, the Servicer,
      and the Trustee with the consent of the Holders of Certificates evidencing
      Percentage Interests aggregating not less than 51% of each Class of Certificates
      adversely affected thereby for the purpose of adding any provisions to or
      changing in any manner or eliminating any of the provisions of this Agreement
      or
      of modifying in any manner the rights of the Holders of
      Certificates.  As long as any Voting Rights are held by parties other
      than the Seller, its Affiliates, or its agents, as the Seller shall certify
      to
      the Trustee upon any such entity obtaining such ownership, Voting Rights of
      Certificates held by the Seller, its Affiliates or its agents will be excluded
      from participating in such voting arrangements, and excluded from determining
      the 51% threshold.  No amendment shall

     

     (i)           reduce
      in any manner the amount of, or delay the timing of, payments required to be
      distributed on any Certificate without the consent of the Holder of such
      Certificate,

     

    

    
      
        
          
          

        

        
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    (ii)           amend,
      modify, add to, rescind, or alter in any respect Section 10.13, notwithstanding
      any contrary provision of this Agreement, without the consent of the Holders
      of
      Certificates evidencing Percentage Interests aggregating not less than 66 2/3%
      (provided, however, that no Certificates held by the Seller, the Depositor
      or
      any Affiliate thereby shall be given effect for the purpose of calculating
      any
      such aggregation of Percentage Interests), or

     

    (iii)           reduce
      the aforesaid percentages of Certificates the Holders of which are required
      to
      consent to any such amendment, without the consent of the Holders of all such
      Certificates then outstanding.

     

    Notwithstanding
      any contrary provision of this Agreement, the Trustee shall not consent to
      any
      amendment to this Agreement unless (i) it shall have first received an Opinion
      of Counsel, which opinion shall not be an expense of the Trustee or the Trust
      Fund, to the effect that such amendment will not cause the imposition of any
      tax
      on any REMIC created under this Agreement or the Certificateholders or cause
      any
      REMIC created hereunder to fail to qualify as a REMIC at any time that any
      Certificates are outstanding and (ii) because the Trust Fund is required to
      be a
      Qualifying Special Purpose Entity (as that term is defined in Statement of
      Financial Accounting Standards No. 140 (“SFAS 140”),
      in order for the Seller to continue to account for the transfer of the Mortgage
      Loans under this Agreement as a sale under SFAS 140, prior to the parties hereto
      entering into such an amendment, the Trustee shall receive an Officer’s
      Certificate, which shall not be an expense of the Trustee or the Trust Fund,
      to
      the effect that such amendment would not “significantly change” (within the
      meaning of SFAS 140) the permitted activities of the Trust Fund so as to cause
      the Trust Fund to fail to qualify as a Qualifying Special Purpose
      Entity.

     

    Promptly
      after the execution of any amendment to this Agreement requiring the consent
      of
      Certificateholders, the Trustee shall furnish written notification of the
      substance or a copy of such amendment to each Certificateholder and each Rating
      Agency.

     

    It
      shall
      not be necessary for the consent of Certificateholders under this Section 10.01
      to approve the particular form of any proposed amendment, but it shall be
      sufficient if such consent shall approve the substance thereof.  The
      manner of obtaining such consents and of evidencing the authorization of the
      execution thereof by Certificateholders shall be subject to such reasonable
      regulations as the Trustee may prescribe.

     

    Nothing
      in this Agreement shall require the Trustee to enter into an amendment without
      receiving an Opinion of Counsel (which Opinion shall not be an expense of the
      Trustee or the Trust Fund), satisfactory to the Trustee that (i) such amendment
      is permitted and is not prohibited by this Agreement and that all requirements
      for amending this Agreement have been complied with; and (ii) either (A) the
      amendment does not adversely affect in any material respect the interests of
      any
      Certificateholder or (B) the conclusion set forth in the preceding clause (A)
      is
      not required to be reached pursuant to this Section 10.01.

     

    Section
      10.02                                Recordation
      of Agreement; Counterparts.

     

    This
      Agreement is subject to recordation in all appropriate public offices for real
      property records in all the counties or other comparable jurisdictions in which
      any or all of the properties subject to the Mortgages are situated, and in
      any
      other appropriate public recording office or elsewhere, such recordation to
      be
      effected by the Servicer at its expense, but only upon receipt of an Opinion
      of
      Counsel to the effect that such recordation materially and beneficially affects
      the interests of the Certificateholders.

     

    

    
      
        
          
          

        

        
          101

          
            

          

        

        
          
          

        

      

    

    

    For
      the
      purpose of facilitating the recordation of this Agreement as herein provided
      and
      for other purposes, this Agreement may be executed simultaneously in any number
      of counterparts, each of which counterparts shall be deemed to be an original,
      and such counterparts shall constitute but one and the same
      instrument.

     

    Section
      10.03                                Governing
      Law.

     

    THIS
      AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE SUBSTANTIVE
      LAWS OF THE STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED
      IN THE STATE OF NEW YORK AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES
      HERETO AND THE CERTIFICATEHOLDERS SHALL BE DETERMINED IN ACCORDANCE WITH SUCH
      LAWS.

     

    Section
      10.04                                Intention
      of Parties.

     

    It
      is the
      express intent of the parties hereto that the conveyance (i) of the Mortgage
      Loans by the Seller to the Depositor and (ii) of the Trust Fund by the Depositor
      to the Trustee each be, and be construed as, an absolute sale
      thereof.  It is, further, not the intention of the parties that such
      conveyances be deemed a pledge thereof.  However, if, notwithstanding
      the intent of the parties, the assets are held to be the property of the Seller
      or Depositor, as the case may be, or if for any other reason this Agreement
      is
      held or deemed to create a security interest in either such assets, then (i)
      this Agreement shall be deemed to be a security agreement within the meaning
      of
      the UCC and (ii) the conveyances provided for in this Agreement shall be deemed
      to be an assignment and a grant (i) by the Seller to the Depositor or (ii)
      by
      the Depositor to the Trustee, for the benefit of the Certificateholders, of
      a
      security interest in all of the assets transferred, whether now owned or
      hereafter acquired.

     

    The
      Seller and the Depositor for the benefit of the Certificateholders shall, to
      the
      extent consistent with this Agreement, take such actions as may be necessary
      to
      ensure that, if this Agreement were deemed to create a security interest in
      the
      Trust Fund, such security interest would be deemed to be a perfected security
      interest of first priority under applicable law and will be maintained as such
      throughout the term of the Agreement.  The Depositor shall arrange for
      filing any Uniform Commercial Code continuation statements in connection with
      any security interest granted or assigned to the Trustee for the benefit of
      the
      Certificateholders.

     

    Section
      10.05                                Notices.

     

    (a)  The
      Trustee shall use its best efforts to promptly provide notice to each Rating
      Agency with respect to each of the following of which it has actual
      knowledge:

     

    1.  Any
      material change or amendment to this Agreement;

     

    2.  The
      occurrence of any Event of Default that has not been cured;

     

    3.  The
      resignation or termination of the Servicer or the Trustee and the appointment
      of
      any successor;

     

    4.  The
      repurchase or substitution of Mortgage Loans pursuant to Section 2.03;
      and

     

    5.  The
      final distribution to Certificateholders.

     

    In
      addition, the Trustee shall promptly furnish to each Rating Agency copies of
      the
      following:

     

    

    
      
        
          
          

        

        
          102

          
            

          

        

        
          
          

        

      

    

    

    1.  Each
      report to Certificateholders described in Section 4.06;

     

    2.  Each
      annual statement as to compliance described in Section 3.17;

     

    3.  Each
      annual independent public accountants’ servicing report described in Section
      11.07; and

     

    4.  Any
      notice of a purchase of a Mortgage Loan pursuant to Section 2.02, 2.03 or
      3.11.

     

    (b)  All
      directions, demands and notices hereunder shall be in writing and shall be
      deemed to have been duly given when delivered to (a) in the case of the
      Depositor, IndyMac MBS, Inc., 155 North Lake Avenue, Pasadena, California 91101,
      Attention: Secondary Marketing Transaction Management; (b) in the case of the
      Servicer, IndyMac Bank, F.S.B., 888 East Walnut Street, Pasadena, California
      91101-7211, Attention: Secondary Marketing, Transaction Management or such
      other
      address as may be hereafter furnished to the Depositor and the Trustee by the
      Servicer in writing; (c) in the case of the Trustee to the Corporate Trust
      Office, Deutsche Bank National Trust Company, 1761 East St. Andrew Place, Santa
      Ana, California 92705-4934, Attention:  Trust Administration IN07C1,
      Series 2007-AR1, or such other address as the Trustee may hereafter furnish
      to
      the Depositor or Servicer and (d) in the case of each of the Rating Agencies,
      the address specified therefor in the definition corresponding to the name
      of
      such Rating Agency.  Notices to Certificateholders shall be deemed
      given when mailed, first class postage prepaid, to their respective addresses
      appearing in the Certificate Register.

     

    Section
      10.06                                Severability
      of Provisions.

     

    If
      any
      one or more of the covenants, agreements, provisions or terms of this Agreement
      shall be for any reason whatsoever held invalid, then such covenants,
      agreements, provisions or terms shall be deemed severable from the remaining
      covenants, agreements, provisions or terms of this Agreement and shall in no
      way
      affect the validity or enforceability of the other provisions of this Agreement
      or of the Certificates or the rights of the Holders thereof.

     

    Section
      10.07                                Assignment

     

    Notwithstanding
      anything to the contrary contained in this Agreement, except as provided in
      Section 6.02, this Agreement may not be assigned by the Servicer without the
      prior written consent of the Trustee and Depositor.

     

    Section
      10.08                                Limitation
      on Rights of Certificateholders.

     

    The
      death
      or incapacity of any Certificateholder shall not operate to terminate this
      Agreement or the trust created by this Agreement, nor entitle such
      Certificateholder’s legal representative or heirs to claim an accounting or to
      take any action or commence any proceeding in any court for a petition or
      winding up of the trust created hereby, or otherwise affect the rights,
      obligations and liabilities of the parties to this Agreement or any of
      them.

     

    No
      Certificateholder shall have any right to vote (except as provided in this
      Agreement) or in any manner otherwise control the operation and management
      of
      the Trust Fund, or the obligations of the parties to this Agreement, nor shall
      anything herein set forth or contained in the terms of the Certificates be
      construed so as to constitute the Certificateholders from time to time as
      partners or members of an association; nor shall any Certificateholder be under
      any liability to any third party because of any action taken by the parties
      to
      this Agreement pursuant to any provision of this Agreement.

     

    

    
      
        
          
          

        

        
          103

          
            

          

        

        
          
          

        

      

    

    

    No
      Certificateholder shall have any right by virtue or by availing itself of any
      provisions of this Agreement to institute any suit, action or proceeding in
      equity or at law upon or under or with respect to this Agreement, unless such
      Holder previously shall have given to the Trustee a written notice of an Event
      of Default and of the continuance thereof, as provided in this Agreement, and
      unless the Holders of Certificates evidencing not less than 25% of the Voting
      Rights evidenced by the Certificates shall also have made written request to
      the
      Trustee to institute such action, suit or proceeding in its own name as Trustee
      hereunder and shall have offered to the Trustee such reasonable indemnity as
      it
      may require against the costs, expenses, and liabilities to be incurred therein
      or thereby, and the Trustee, for 60 days after its receipt of such notice,
      request and offer of indemnity shall have neglected or refused to institute
      any
      such action, suit or proceeding; it being understood and intended, and being
      expressly covenanted by each Certificateholder with every other
      Certificateholder and the Trustee, that no one or more Holders of Certificates
      shall have any right in any manner whatever by virtue or by availing itself
      or
      themselves of any provisions of this Agreement to affect, disturb or prejudice
      the rights of the Holders of any other of the Certificates, or to obtain or
      seek
      to obtain priority over or preference to any other such Holder or to enforce
      any
      right under this Agreement, except in the manner herein provided and for the
      common benefit of all Certificateholders.  For the protection and
      enforcement of this Section 10.08, each Certificateholder and the Trustee shall
      be entitled to any relief that can be given either at law or in equity. As
      long
      as any Voting Rights are held by parties other than the Seller, its Affiliates,
      or its agents, Voting Rights of Certificates held by the Seller, its Affiliates
      or its agents as the Seller shall certify to the Trustee upon any entity
      obtaining such ownership, will be excluded from participating in such voting
      arrangements, and excluded from determining the 25% threshold.

     

    Section
      10.09                                Inspection
      and Audit Rights.

     

    The
      Servicer agrees that, on reasonable prior notice, it will permit any
      representative of the Depositor or the Trustee during the Servicer’s normal
      business hours, to examine all the books of account, records, reports and other
      papers of the Servicer relating to the Mortgage Loans, to make copies and
      extracts therefrom, to cause such books to be audited by independent certified
      public accountants selected by the Depositor or the Trustee and to discuss
      its
      affairs, finances and accounts relating to the Mortgage Loans with its officers,
      employees and independent public accountants (and by this provision the Servicer
      hereby authorizes said accountants to discuss with such representative such
      affairs, finances and accounts), all at such reasonable times and as often
      as
      may be reasonably requested.  Any out-of-pocket expense incident to
      the exercise by the Depositor or the Trustee of any right under this Section
      10.09 shall be borne by the party requesting such inspection; all other such
      expenses shall be borne by the Servicer.

     

    Section
      10.10                                Certificates
      Nonassessable and Fully Paid.

     

    It
      is the
      intention of the Depositor that Certificateholders shall not be personally
      liable for obligations of the Trust Fund, that the interests in the Trust Fund
      represented by the Certificates shall be nonassessable for any reason
      whatsoever, and that the Certificates, upon due authentication thereof by the
      Trustee pursuant to this Agreement, are and shall be deemed fully
      paid.

     

    Section
      10.11                                Official
      Record.

     

    The
      Seller agrees that this Agreement is and shall remain at all times before the
      time at which this Agreement terminates an official record of the Seller as
      referred to in Section 13(e) of the Federal Deposit Insurance Act.

     

    

    
      
        
          
          

        

        
          104

          
            

          

        

        
          
          

        

      

    

    

    Section
      10.12                                Protection
      of Assets.

     

    (a)  Except
      for transactions and activities entered into in connection with the
      securitization that is the subject of this Agreement, the trust created by
      this
      Agreement is not authorized and has no power to:

     

    (1)           borrow
      money or issue debt;

     

    (2)           merge
      with another entity, reorganize, liquidate or sell assets;

     

    (3)           engage
      in any business or activities.

     

    (b)  Each
      party to this Agreement agrees that it will not file an involuntary bankruptcy
      petition against the Trustee or the Trust Fund or initiate any other form of
      insolvency proceeding until after the Certificates have been paid in
      full.

     

    Section
      10.13                                Qualifying
      Special Purpose Entity.

     

    Notwithstanding
      any contrary provision of this Agreement, the Trust Fund shall not hold any
      property or engage in any activity that would disqualify the Trust Fund from
      being a qualifying special purpose entity under generally accepted accounting
      principles.

     

    ARTICLE
      ELEVEN

     

    EXCHANGE
      ACT
      REPORTING

     

    Section
      11.01                                Filing
      Obligations.

     

    The
      Servicer, the Trustee and the Seller shall reasonably cooperate with the
      Depositor in connection with the satisfaction of the Depositor’s reporting
      requirements under the Exchange Act with respect to the Trust
      Fund.  In addition to the information specified below, if so requested
      by the Depositor for the purpose of satisfying its reporting obligation under
      the Exchange Act, the Servicer, the Trustee and the Seller shall provide the
      Depositor with (a) such information which is available to such Person without
      unreasonable effort or expense and within such timeframe as may be reasonably
      requested by the Depositor to comply with the Depositor’s reporting obligations
      under the Exchange Act and (b) to the extent such Person is a party (and the
      Depositor is not a party) to any agreement or amendment required to be filed,
      copies of such agreement or amendment in EDGAR-compatible form.

     

    Section
      11.02                                Form
      10-D Filings.

     

    (a)  In
      accordance with the Exchange Act, unless no reporting obligation under the
      Exchange Act exists at such time with respect to the Trust Fund, the Trustee
      shall prepare for filing and file within 15 days after each Distribution Date
      (subject to permitted extensions under the Exchange Act) with the Commission
      with respect to the Trust Fund, a Form 10-D with copies of the Monthly Report
      and, to the extent delivered to the Trustee, no later than five calendar days
      following the Distribution Date, such other information identified by the
      Depositor or the Servicer, in writing, to be filed with the Commission (such
      other information, the “Additional Designated Information”).  If the
      Depositor or Servicer directs that any Additional Designated Information is
      to
      be filed with any Form 10-D, the Depositor or Servicer, as the case may be,
      shall specify the Item on Form 10-D to which such information is responsive
      and,
      with respect to any Exhibit to be filed on Form 10-D, the Exhibit
      number.  Any information to be filed on Form 10-D shall be delivered
      to the Trustee in EDGAR-compatible form or as otherwise agreed upon by the
      Trustee and the Depositor or the Servicer, as the case may be, at the
      Depositor’s expense, and any necessary conversion to EDGAR-compatible format
      will be at the Depositor’s expense.  At the reasonable request of, and
      in accordance with the reasonable directions of, the Depositor or the Servicer,
      subject to the two preceding sentences, the Trustee shall prepare for filing
      and
      file an amendment to any Form 10-D previously filed with the Commission with
      respect to the Trust Fund.  The Depositor shall sign the Form 10-D
      filed on behalf of the Trust Fund.

     

    

    
      
        
          
          

        

        
          105

          
            

          

        

        
          
          

        

      

    

    

    The
      Trustee shall prepare each Form 10-D and, no later than five Business Days
      prior
      to the date on which such Form 10-D is required to be filed, deliver a copy
      of
      such Form 10-D to the Depositor for review.  No later than the
      Business Day following the receipt thereof, the Depositor shall notify the
      Trustee of any changes to be made to the Form 10-D.  The Trustee shall
      make any changes thereto requested by the Depositor and deliver the final Form
      10-D to the Depositor for signature no later than three Business Days prior
      to
      the date on which such Form 10-D must be filed by the Trustee in accordance
      with
      this Section 11.02.  The Depositor shall execute the final Form 10-D
      and deliver the same to the Trustee via electronic mail
      (DBSEC.Notifications@db.com) or facsimile no later than the Business Day
      following receipt of the same (which, unless not received within such time
      frame
      from the Trustee, shall be no later than two Business Days prior to the date
      on
      which the Form 10-D is required to be filed), with an original executed hard
      copy to follow by overnight courier.

     

    (b)  No
      later than each Distribution Date, any party responsible for providing
      Additional Designated Information shall notify the Depositor and the Trustee
      of
      any Form 10-D Disclosure Item, together with a description of any such Form
      10-D
      Disclosure Item in form and substance reasonably acceptable to the
      Depositor.  In addition to such information as the Servicer and the
      Trustee are obligated to provide pursuant to other provisions of this Agreement,
      if so requested by the Depositor, each of the Servicer and the Trustee shall
      provide such information which is available to the Servicer and the Trustee,
      as
      applicable, without unreasonable effort or expense regarding the performance
      or
      servicing of the Mortgage Loans (in the case of the Trustee, based on the
      information provided by the Servicer) as is reasonably required to facilitate
      preparation of distribution reports in accordance with Item 1121 of Regulation
      AB.  Such information shall be provided concurrently with the
      Remittance Reports in the case of the Servicer and the Monthly Statement in
      the
      case of the Trustee, commencing with the first such report due not less than
      five Business Days following such request.

     

    (c)  The
      Trustee shall not have any responsibility to file any items (other than those
      generated by it) that have not been received in a format suitable (or readily
      convertible into a format suitable) for electronic filing via the EDGAR system
      and shall not have any responsibility to convert any such items to such format
      (other than those items generated by it or that are readily convertible to
      such
      format).  The Trustee shall have no liability to the
      Certificateholders, the Trust Fund, the Servicer or the Depositor with respect
      to any failure to properly prepare or file any of Form 10-D to the extent that
      such failure is not the result of any negligence, bad faith or willful
      misconduct on its part.  The Trustee will not have any duty to verify
      the accuracy or sufficiency of any information to be included in any Form 10-D
      not provided by it.  The Trustee shall have no liability with respect
      to any failure to properly prepare and file such periodic reports resulting
      from
      or relating to the Trustee’s inability or failure to obtain any information not
      resulting from its own negligence or willful misconduct.

     

    Section
      11.03                                Form
      8-K Filings.

     

    The
      Servicer shall prepare and file on behalf of the Trust Fund any Form 8-K
      required by the Exchange Act.  Each Form 8-K must be signed by the
      Servicer.  Any reporting party identified on Exhibit T shall promptly
      notify the Depositor and the Servicer (if the notifying party is not the
      Servicer), but in no event later than one (1) Business Day after its occurrence,
      of any Reportable Event of which it has actual knowledge.  Each Person
      shall be deemed to have actual knowledge of any such event to the extent that
      it
      relates to such Person or any action or failure to act by such
      Person.

     

    

    
      
        
          
          

        

        
          106

          
            

          

        

        
          
          

        

      

    

    

    Section
      11.04                                Form
      10-K Filings.

     

    Prior
      to
      (x) March 31, 2008 and (y) unless and until a Form 15 Suspension Notice shall
      have been filed, March 31st of each year thereafter (or, in either case, such
      earlier date as may be required by the Exchange Act), the Trustee shall, subject
      to the provisions of this Section 11.04, file a Form 10-K, with respect to
      the
      Trust Fund.  The Trustee shall prepare and file on behalf of the Trust
      Fund a Form 10-K, in form and substance as required by the Exchange
      Act.  The Trustee shall prepare each Form 10-K and, no later than 5
      Business Days prior to the date on which such Form 10-K is required to be filed,
      deliver a copy of such Form 10-K to the Depositor for review.  No
      later than the Business Day following the receipt thereof, the Depositor shall
      notify the Trustee of any changes to be made to the Form 10-K. The Trustee
      shall
      make any changes thereto requested by the Depositor and deliver the final Form
      10-K to the Depositor for signature no later than three Business Days prior
      to
      the date on which such Form 10-K must be filed by the Trustee in accordance
      with
      this Section 11.04.  The Depositor shall execute the final Form 10-K
      and deliver the same to the Trustee via electronic mail
      (DBSEC.Notifications@db.com) or facsimile no later than Business Day following
      receipt of the same (which, unless not received within such time frame from
      the
      Trustee, shall be no later than two Business Days prior to the date on which
      the
      From 10-K is required to be filed), with an original executed hard copy to
      follow by overnight mail. Such Form 10-K shall include the Assessment of
      Compliance, Attestation Report, Annual Compliance Statements and other
      documentation provided by the Servicer pursuant to Sections 3.17 and 11.07,
      a
      certification in the form attached hereto as Exhibit O-1 (the “Depositor
      Certification”), which shall be signed by the senior officer of the Depositor in
      charge of securitization, and an accountant’s report described under Section
      11.07.  Each Form 10-K shall also include any Sarbanes-Oxley
      Certification required to be included therewith, as described in Section
      11.05.

     

    If
      the
      Item 1119 Parties listed on Exhibit T have changed since the Closing Date,
      no
      later than March 1 of each year, the Depositor shall provide each of the
      Servicer and the Trustee via electronic mail (DBSEC.Notifications@db.com) with
      an updated Exhibit T setting forth the Item 1119 Parties.

     

    As
      to
      each item of information required to be included in any Form 10-D, Form 8-K
      or
      Form 10-K, the Trustee's or Depositor’s obligation to include the information in
      the applicable report is subject to receipt from the entity that is indicated
      in
      Exhibit Q as the responsible party for providing that information, if other
      than
      the Trustee or the Depositor, as applicable, as and when required as described
      above.  Each of the Trustee, the Servicer and the Depositor, as
      applicable, hereby agree to notify and provide to the Trustee and the Depositor
      all information that is required to be included in any Form 10-D, Form 8-K
      or
      Form 10-K, with respect to which that entity is indicated in Exhibit Q as the
      responsible party for providing that information. In the case of information
      to
      be included in the From 10-D, such information shall be delivered to the Trustee
      (with a copy to the Depositor) no later than 5 calendar days following each
      Distribution Date. In the case of  information to be included in the
      Form 8-K, such information shall be delivered to the Depositor no later than
      no
      later 2 Business Days following the occurrence of a reportable
      event.  In the case of information to be included in the From 10-K,
      such information, other than the documentation provided pursuant to Sections
      3.17 and 11.07, shall be delivered to the Trustee no later than (x) March 1,
      2008 (with a 15-day cure period) and (y) unless and until a Form 15 Suspension
      Notice shall have been filed, March 1st of each year thereafter.  The
      Servicer shall be responsible for determining the pool concentration applicable
      to any subservicer or originator at any time, for purposes of disclosure as
      required by Items 1117 and 1119 of Regulation AB.  The Trustee shall
      provide electronic or paper copies of all Form 10-D, 8-K and 10-K filings free
      of charge to any Certificateholder upon request.

     

    The
      Trustee shall sign a certification (in the form attached hereto as Exhibit
      O-2)
      for the benefit of the Depositor and its officers, directors and
      Affiliates.  The Trustee's certification shall be delivered to the
      Depositor by no later than March 18th of each year (or if such day is not a
      Business Day, the immediately preceding Business Day) and the Depositor shall
      deliver the Depositor Certification to the Trustee for filing no later than
      March 20th of each year (or if such day is not a Business Day, the immediately
      preceding Business Day).

     

    

    
      
        
          
          

        

        
          107

          
            

          

        

        
          
          

        

      

    

    

    The
      Trustee shall indemnify and hold harmless the Depositor and its officers,
      directors and Affiliates from and against any losses, damages, penalties, fines,
      forfeitures, reasonable and necessary legal fees and related costs, judgments
      and other costs and expenses arising out of or based upon (i) a breach of the
      Trustee’s obligations under this Section 11.04 and Section 11.07 or (ii) any
      material misstatement or omission contained in any information provided by
      the
      Trustee including, without limitation, in the certification provided by the
      Trustee in the form of Exhibit O-2 or the assessment of compliance provided
      pursuant to Section 11.07.  If the indemnification provided for herein
      is unavailable or insufficient to hold harmless the Depositor, then the Trustee,
      in connection with (i) a breach of the Trustee’s obligations under this Section
      11.04 or Section 11.07 or (ii) any material misstatement or omission contained
      in any information provided by the Trustee including, without limitation, in
      the
      certification provided by the Trustee in the form of Exhibit O-2, or in the
      assessment of compliance or attestation report provided pursuant to Section
      11.07, agrees that it shall contribute to the amount paid or payable by the
      Depositor as a result of the losses, claims, damages or liabilities of the
      Depositor in such proportion as is appropriate to reflect the relative fault
      of
      the Depositor on the one hand and the Trustee on the other.  This
      indemnification shall survive the termination of this Agreement or the
      termination of any party to this Agreement.

     

    The
      Servicer shall indemnify and hold harmless the Depositor, the Trustee and their
      respective officers, directors and Affiliates from and against any actual
      losses, damages, penalties, fines, forfeitures, reasonable and necessary legal
      fees and related costs, judgments and other costs and expenses that such Person
      may sustain based upon (i) a breach of the Servicer’s obligations under Sections
      3.17, 11.07 or 11.04 or (ii) any material misstatement or omission contained
      in
      any information provided by the Servicer including, without limitation, in
      the
      information  provided pursuant to Sections 3.17 and 11.07. This
      indemnification shall survive the termination of this Agreement or the
      termination of any party to this Agreement.

     

    The
      Depositor shall indemnify and hold harmless the Servicer, the Trustee and their
      respective officers, directors and Affiliates from and against any actual
      losses, damages, penalties, fines, forfeitures, reasonable and necessary legal
      fees and related costs, judgments and other costs and expenses that such Person
      may sustain based upon (i) a breach of the Depositor’s obligations under this
      Section 11.04 or (ii) any material misstatement or omission contained in any
      information provided by the Depositor.

     

    The
      Trustee will have no duty or liability to verify the accuracy or sufficiency
      of
      any information not prepared by it included in any Form 10-D, Form 10-K or
      Form
      8-K.  The Trustee shall have no liability with respect to any failure
      to properly prepare or file any Form 10-D or Form 10-K resulting from or
      relating to the Trustee's inability or failure to receive any information in
      a
      timely manner from the party responsible for delivery of such
      information.  The Trustee shall have no liability with respect to any
      failure to properly file any Form 10-D or 10-K resulting from or relating to
      the
      Depositor's failure to timely comply with the provisions of this
      section.  Nothing herein shall be construed to require the Trustee or
      any officer, director or Affiliate thereof to sign any Form 10-D, Form 10-K
      or
      Form 8-K. Copies of all reports filed by the Trustee under the Exchange Act
      shall be sent to the Depositor electronically or at the address set forth in
      Section 10.05.  Fees and expenses incurred by the Trustee in
      connection with this Section 11.04 shall not be reimbursable from the Trust
      Fund.

     

    Upon
      any
      filing with the Commission, the Trustee shall promptly deliver to the Depositor
      a copy of any executed report, statement or information.

     

    

    
      
        
          
          

        

        
          108

          
            

          

        

        
          
          

        

      

    

    

    To
      the
      extent that, following the Closing Date, the Depositor certifies that reports
      and certifications differing from those required under this Section 11.04 are
      necessary to comply with the reporting requirements under the Exchange Act,
      the
      parties hereto hereby agree that each will reasonably cooperate to amend the
      provisions of this Section 11.04 in order to comply with such amended reporting
      requirements and such amendment of this Section 11.04.  Any such
      amendment may result in the reduction of the reports executed by and filed
      on
      behalf of the Depositor under the Exchange Act.  Notwithstanding the
      foregoing, the Trustee shall not be obligated to enter into any amendment
      pursuant to this Section that adversely affects its obligations and immunities
      under this Agreement.

     

    Each
      of
      the parties acknowledges and agrees that the purpose of Sections 3.17, 11.07
      and
      this Section 11.04 of this Agreement is to facilitate compliance by the
      Depositor with the provisions of Regulation AB.  Therefore, each of
      the parties agree that (a) the obligations of the parties hereunder shall be
      interpreted in such a manner as to accomplish that purpose, (b) the parties’
obligations hereunder will be supplemented and modified as necessary to be
      consistent with any such amendments, interpretive advice or guidance in respect
      of the requirements of Regulation AB, (c) the parties shall comply with
      reasonable requests made by the Depositor for delivery of additional or
      different information as the Depositor may determine in good faith is necessary
      to comply with the provisions of Regulation AB, and (d) no amendment of this
      Agreement shall be required to effect any such changes in the parties’
obligations as are necessary to accommodate evolving interpretations of the
      provisions of Regulation AB.

     

    Section
      11.05                                Sarbanes-Oxley
      Certification.

     

    Each
      Form
      10-K shall include a certification (the “Sarbanes-Oxley
      Certification”) required by Rules 13a-14(d) and 15d-14(d) under
      the Exchange Act (pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
      and
      the rules and regulations of the Commission promulgated thereunder (including
      any interpretations thereof by the Commission’s staff)).  No later
      than March 15 of each year, beginning in 2008, the Servicer and the Trustee
      shall (unless such person is the Certifying Person), and the Servicer shall
      cause each Reporting Subcontractor and the Trustee shall cause each Reporting
      Subcontractor to, provide to the Person who signs the Sarbanes-Oxley
      Certification (the “Certifying Person”) a
      certification (each, a “Performance Certification”),
      in the form attached hereto as Exhibit R on which the Certifying Person, the
      entity for which the Certifying Person acts as an officer, and such entity’s
      officers, directors and Affiliates (collectively with the Certifying Person,
      “Certification Parties”) can reasonably
      rely.  The senior officer in charge of the servicing function of the
      Servicer shall serve as the Certifying Person on behalf of the Trust
      Fund.  Neither the Servicer nor the Depositor will request delivery of
      a certification under this clause unless the Trustee is required under the
      Exchange Act to file an annual report on Form 10-K with respect to the Trust
      Fund.  In the event that prior to the filing date of the Form 10-K in
      March of each year, the Servicer or the Depositor has actual knowledge of
      information material to the Sarbanes-Oxley Certification, the Servicer or the
      Depositor, as the case may be, shall promptly notify the Servicer and the
      Trustee.  The respective parties hereto agree to cooperate with all
      reasonable requests made by any Certifying Person or Certification Party in
      connection with such Person’s attempt to conduct any due diligence that such
      Person reasonably believes to be appropriate in order to allow it to deliver
      any
      Sarbanes-Oxley Certification or portion thereof with respect to the Trust
      Fund.

     

    Section
      11.06                                Form
      15 Filing.

     

    Prior
      to
      January 30 of the first year in which the Depositor is able to do so under
      applicable law, the Trustee on behalf of the Depositor shall file a Form 15
      relating to the automatic suspension of reporting in respect of the Trust Fund
      under the Exchange Act.

     

    

    
      
        
          
          

        

        
          109

          
            

          

        

        
          
          

        

      

    

    

    Section
      11.07                                Report
      on Assessment of Compliance and Attestation.

     

    (a)  On
      or before March 15 of each calendar year, commencing in 2008, unless no
      reporting obligation under the Exchange Act exists at such time with respect
      to
      the Trust Fund:

     

    (i)           The
      Servicer shall deliver to the Trustee (with a copy to the Depositor) a report
      (in form and substance reasonably satisfactory to the Trustee) regarding the
      Servicer’s or the Trustee’s, as applicable, assessment of compliance with the
      Servicing Criteria during the immediately preceding calendar year, as required
      under Rules 13a-18 and 15d-18 of the Exchange Act and Item 1122 of Regulation
      AB.  Such report shall be signed by an authorized officer of such
      Person and shall address each of the Servicing Criteria applicable to each
      party
      specified on a certification delivered to the Trustee substantially in the
      form
      of Exhibit S.  To the extent any of the Servicing Criteria are not
      applicable to such Person, with respect to asset-backed securities transactions
      taken as a whole involving such Person and that are backed by the same asset
      type backing the Certificates, such report shall include such a statement to
      that effect.  The Trustee and the Servicer, and each of their
      respective officers and directors shall be entitled to rely upon each such
      servicing criteria assessment.

     

    (ii)           The
      Servicer shall deliver to the Trustee, and the Trustee shall provide on its
      own
      behalf, a report of a registered public accounting firm reasonably acceptable
      to
      the Trustee that attests to, and reports on, the assessment of compliance made
      by Servicer or the Trustee, as applicable, and delivered pursuant to the
      preceding paragraphs.  Such attestation shall be in accordance with
      Rules 1-02(a)(3) and 2-02(g) of Regulation S-X under the Securities Act and
      the
      Exchange Act, including, without limitation that in the event that an overall
      opinion cannot be expressed, such registered public accounting firm shall state
      in such report why it was unable to express such an opinion.  Such
      report must be available for general use and not contain restricted use
      language.  To the extent any of the Servicing Criteria are not
      applicable to such Person, with respect to asset-backed securities transactions
      taken as a whole involving such Person and that are backed by the same asset
      type backing the Certificates, such report shall include such a statement to
      that effect.

     

    (iii)           The
      Servicer shall cause each Reporting Subcontractor to deliver to the Trustee
      (with a copy to the Depositor) an assessment of compliance and accountant’s
      attestation as and when provided in paragraphs (a) and (b) of this Section
      11.07.

     

    (iv)           The
      Trustee shall cause each Reporting Subcontractor to deliver to the Trustee and
      the Servicer (with a copy to the Depositor) an assessment of compliance and
      accountant’s attestation as and when provided in paragraphs (a) and (b) of this
      Section.

     

    (v)           The
      Servicer shall execute (and the Servicer shall cause each Reporting
      Subcontractor to execute) a reliance certificate to enable the Certification
      Parties to rely upon each (A) annual compliance statement provided pursuant
      to
      Section 3.17, (B) annual report on assessments of compliance with servicing
      criteria provided pursuant to this Section 11.07 and (C) accountant’s report
      provided pursuant to this Section 11.07 and shall include a certification that
      each such annual compliance statement or report discloses any deficiencies
      or
      defaults described to the registered public accountants of such Person to enable
      such accountants to render the certificates provided for in this Section
      11.07.

     

    (vi)           The
      Trustee shall execute (and the Trustee shall cause each Reporting Subcontractor
      to execute) a reliance certificate to enable the Certification Parties to rely
      upon each (A) annual report on assessments of compliance with servicing criteria
      provided pursuant to this Section 11.07 and (C) accountant’s report provided
      pursuant to this Section 11.07 and shall include a certification that each
      such
      report discloses any deficiencies or defaults described to the registered public
      accountants of such Person to enable such accountants to render the certificates
      provided for in this Section 11.07.

     

    

    
      
        
          
          

        

        
          110

          
            

          

        

        
          
          

        

      

    

    

    (b)  In
      the event the Servicer, the Trustee or Reporting Subcontractor is terminated
      or
      resigns during the term of this Agreement, such Person shall provide documents
      and information required by this Section 11.07 with respect to the period of
      time it was subject to this Agreement or provided services with respect to
      the
      Trust Fund, the Certificates or the Mortgage Loans.

     

    (c)  An
      assessment of compliance provided by a Subcontractor pursuant to Section
      11.07(a)(iii) or (iv) need not address any elements of the Servicing Criteria
      other than those specified by the Servicer or the Trustee, as applicable,
      pursuant to Section 11.07(a)(i).

     

    Section
      11.08                                Use
      of Subcontractors.

     

    (a)  [Reserved].

     

    (b)  It
      shall not be necessary for the Servicer or the Trustee to seek the consent
      of
      the Depositor or any other party hereto to the utilization of any
      Subcontractor.  The Servicer or the Trustee, as applicable, shall
      promptly upon request provide to the Trustee and the Depositor (or any designee
      of the Depositor, such as the Servicer or administrator) a written description
      (in form and substance satisfactory to the Depositor) of the role and function
      of each Subcontractor utilized by such Person, specifying (i) the identity
      of
      each such Subcontractor, (ii) which (if any) of such Subcontractors are
“participating in the servicing function” within the meaning of Item 1122 of
      Regulation AB, and (iii) which elements of the Servicing Criteria will be
      addressed in assessments of compliance provided by each Subcontractor identified
      pursuant to clause (ii) of this paragraph.

     

    As
      a
      condition to the utilization of any Subcontractor determined to be a Reporting
      Subcontractor, the Servicer or the Trustee, as applicable, shall cause any
      such
      Subcontractor used by such Person for the benefit of the Depositor to comply
      with the provisions of Sections 11.07 and 11.09 of this Agreement to the same
      extent as if such Subcontractor were the Servicer  (except with
      respect to the Servicer’s duties with respect to preparing and filing any
      Exchange Act Reports or as the Certifying Person) or the Trustee, as
      applicable.  The Servicer or the Trustee, as applicable, shall be
      responsible for obtaining from each Subcontractor and delivering to the Trustee
      and the Servicer, any assessment of compliance and attestation required to
      be
      delivered by such Subcontractor under Section 11.05 and Section 11.07, in each
      case as and when required to be delivered.

     

    Section
      11.09                                Amendments.

     

    In
      the
      event the parties to this Agreement desire to further clarify or amend any
      provision of this Article 11, this Agreement shall be amended to reflect the
      new
      agreement between the parties covering matters in this Article 11 pursuant
      to
      Section 10.01, which amendment shall not require any Opinion of Counsel or
      Rating Agency confirmations or the consent of any
      Certificateholder.

     

    If,
      during the period that the Depositor is required to file Exchange Act Reports
      with respect to the Trust Fund, the Servicer is no longer an Affiliate of the
      Depositor, the Depositor shall assume the obligations and responsibilities
      of
      the Servicer in this Article 11 with respect to the preparation and filing
      of
      the Exchange Act Reports and/or acting as the Certifying Person, if the
      Depositor has received indemnity from such successor Servicer satisfactory
      to
      the Depositor, and such Servicer has agreed to provide a Sarbanes-Oxley
      Certification to the Depositor substantially in the form of Exhibit
      U.

     

    

    
      
        
          
          

        

        
          111

          
            

          

        

        
          
          

        

      

    

    

    *  *  *  *  *  *

     

    

    
      
        
          
          

        

        
          112

          
            

          

        

        
          
          

        

      

    

    

    IN
      WITNESS WHEREOF, the Depositor, the Trustee, and the Seller and Servicer have
      caused their names to be signed hereto by their respective officers thereunto
      duly authorized as of the day and year first above written.

     

    
      	 	
              INDYMAC
                MBS,
                INC.

            	 
	 	 	as
              Depositor	 
	 	 	 	 
	 	 	 	 
	
               

            	
              By:
                

            	/s/ Jill
              Jacobson	 

    

    
      	 	 	 	Name: Jill
              Jacobson	 
	 	 	 	Title: Vice
              President	 
	 	 	 	 	 

    

    
    

    

    
       

      
        	 	
                
                  DEUTSCHE
                    BANK
                    NATIONAL
                    TRUST
                    COMPANY,

                

              	 
	 	 	as
                Trustee	 
	 	 	 	 
	 	 	 	 
	
                 

              	
                By:
                  

              	/s/ Jennifer
                Hermansader	 

      

      
        	 	 	 	Name: Jennifer
                Hermansader	 
	 	 	 	Title: Associate	 
	 	 	 	 	 

      

      
      

       

       

    

    
      	 	 	 	 
	 	 	 	 
	
               

            	
              By:
                

            	/s/ Marion
              Hogan	 

      
        	 	 	 	Name: Marion
                Hogan	 
	 	 	 	Title: Associate	 
	 	 	 	 	 

      

      
      

    

     

     

    
       

      
        	 	
                
                  INDYMAC
                    BANK,
                    F.S.B.

                

              	 
	 	 	as
                Seller and Servicer	 
	 	 	 	 
	 	 	 	 
	
                 

              	
                By:
                  

              	/s/ Jill
                Jacobson	 

      

      
        	 	 	 	Name: Jill
                Jacobson	 
	 	 	 	Title: Vice
                President	 
	 	 	 	 	 

      

      
      

    

    
    

     

    

    
      
        
          
          

        

        
          
          

          
            

          

        

        
          
          

        

      

    

    

    
      	
              STATE
                OF CALIFORNIA

            	
              )

            
	 	
              :  ss.:

            
	
              COUNTY
                OF Los Angeles

            	
              )

            
	 	 

    

    On
      this
      28th day of
      June, 2007, before me, personally appeared Jill Jacobson, known to me to be
      a
      Vice President of IndyMac MBS, Inc., one of the entities that executed the
      within instrument, and also known to me to be the person who executed it on
      behalf of said entity, and acknowledged to me that such entity executed the
      within instrument.

     

    IN
      WITNESS WHEREOF, I have hereunto set my hand and affixed my official seal the
      day and year in this certificate first above written.

     

    
      	
               

            	
               

            	/s/ Evan
              Fitzsimon	 
	 	 	Notary
              Public	 

    

     

    [NOTARIAL
      SEAL]

     

    

    
      
        
          
          

        

        
          1

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              STATE
                OF CALIFORNIA

            	
              )

            
	 	
              :  ss.:

            
	
              COUNTY
                OF Orange

            	
              )

            
	 	 

    

    On
      this
      28th day of June, 2007, before me, personally appeared Jennifer Hermansader
      and
      Marion Hogan, known to me to be an Associate and an Associate, respectively,
      of
      Deutsche Bank National Trust Company, one of the entities that executed the
      within instrument, and also known to me to be the person who executed it on
      behalf of said entity, and acknowledged to me that such entity executed the
      within instrument.

     

    IN
      WITNESS WHEREOF, I have hereunto set my hand and affixed my official seal the
      day and year in this certificate first above written.

     

    
       

      
        	
                 

              	
                 

              	/s/ Tiffany
                Yuan	 
	 	 	Notary
                Public	 

      

       

    

    [NOTARIAL
      SEAL]

     

    
      
        
          
          

        

        
          2

          
            

          

        

        
          
          

        

      

    

     

     

    
      	
              STATE
                OF CALIFORNIA

            	
              )

            
	 	
              :  ss.:

            
	
              COUNTY
                OF Los Angeles

            	
              )

            
	 	 

    

    On
      this 28th day of June, 2007, before me, personally appeared Jill Jacobson,
      known to me to be a Vice President of IndyMac Bank, F.S.B., one of the entities
      that executed the within instrument, and also known to me to be the person
      who
      executed it on behalf of said entity, and acknowledged to me that such entity
      executed the within instrument.

     

    IN
      WITNESS WHEREOF, I have hereunto set my hand and affixed my official seal the
      day and year in this certificate first above written.

     

    
       

      
        	
                 

              	
                 

              	/s/ Evan
                Fitzsimon	 
	 	 	Notary
                Public	 

      

       

    

    [NOTARIAL
      SEAL]

     

    

    
      
        
          
          

        

        
          3

          
            

          

        

        
          
          

        

      

    

    

    Schedule
      I

     

    MORTGAGE
      LOAN
      SCHEDULE
      [DELIVERED
      AT
      CLOSING
      TO
      TRUSTEE]

     

    

    
      
        
          
          

        

        
          S-I-1

          
            

          

        

        
          
          

        

      

    

    

    Schedule
      II

     

    INDYMAC
      MBS,
      INC.
      MORTGAGE
      PASS-THROUGH
      CERTIFICATES,
      SERIES
      2007-AR1

     

    Representations
      and Warranties of the Seller/Servicer

     

    Indy
      Mac
      Bank, F.S.B. (“IndyMac”) hereby makes the
      representations and warranties set forth in this Schedule II to the Depositor
      and the Trustee, as of the Closing Date.  Capitalized terms used but
      not otherwise defined in this Schedule II shall have the meanings assigned
      thereto in the Pooling and Servicing Agreement (the “Pooling and
      Servicing Agreement”) relating to the above-referenced Series,
      among IndyMac, as seller and servicer, IndyMac MBS, Inc., as depositor, and
      Deutsche Bank National Trust Company, as trustee.

     

    (1)
      IndyMac is duly organized as a federally insured savings bank and is validly
      existing and in good standing under the laws of the United States of America
      and
      is duly authorized and qualified to transact any business contemplated by the
      Pooling and Servicing Agreement to be conducted by IndyMac in any state in
      which
      a Mortgaged Property is located or is otherwise not required under applicable
      law to effect such qualification and, in any event, is in compliance with the
      doing business laws of any such state, to the extent necessary to ensure its
      ability to enforce each Mortgage Loan, to service the Mortgage Loans in
      accordance with the Pooling and Servicing Agreement and to perform any of its
      other obligations under the Pooling and Servicing Agreement in accordance with
      the terms thereof.

     

    (2)
      IndyMac has the full corporate power and authority to sell and service each
      Mortgage Loan, and to execute, deliver and perform, and to enter into and
      consummate the transactions contemplated by the Pooling and Servicing Agreement
      and has duly authorized by all necessary corporate action on the part of IndyMac
      the execution, delivery and performance of the Pooling and Servicing Agreement;
      and the Pooling and Servicing Agreement, assuming the due authorization,
      execution and delivery thereof by the other parties thereto, constitutes a
      legal, valid and binding obligation of IndyMac, enforceable against IndyMac
      in
      accordance with its terms, except that (a) the enforceability thereof may be
      limited by bankruptcy, insolvency, moratorium, receivership and other similar
      laws relating to creditors’ rights generally and (b) the remedy of specific
      performance and injunctive and other forms of equitable relief may be subject
      to
      equitable defenses and to the discretion of the court before which any
      proceeding therefor may be brought.

     

    (3)
      The
      execution and delivery of the Pooling and Servicing Agreement by IndyMac, the
      sale and servicing of the Mortgage Loans by IndyMac under the Pooling and
      Servicing Agreement, the consummation of any other of the transactions
      contemplated by the Pooling and Servicing Agreement, and the fulfillment of
      or
      compliance with the terms thereof are in the ordinary course of business of
      IndyMac and will not (A) result in a material breach of any term or provision
      of
      the charter or by-laws of IndyMac or (B) materially conflict with, result in
      a
      material breach, violation or acceleration of, or result in a material default
      under, any other material agreement or instrument to which IndyMac is a party
      or
      by which it may be bound, or (C) constitute a material violation of any statute,
      order or regulation applicable to IndyMac of any court, regulatory body,
      administrative agency or governmental body having jurisdiction over IndyMac
      (including the OTS, the Federal Deposit Insurance Corporation or any other
      governmental entity having regulatory authority over IndyMac); and IndyMac
      is
      not in breach or violation of any material indenture or other material agreement
      or instrument, or in violation of any statute, order or regulation of any court,
      regulatory body, administrative agency or governmental body having jurisdiction
      over it (including the OTS, the Federal Deposit Insurance Corporation or any
      other governmental entity having regulatory authority over IndyMac) which breach
      or violation may materially impair IndyMac’s ability to perform or meet any of
      its obligations under the Pooling and Servicing Agreement.

     

    

    
      
        
          
          

        

        
          S-II-1

          
            

          

        

        
          
          

        

      

    

    

    (4)
      IndyMac is an approved servicer of conventional mortgage loans for FNMA or
      FHLMC
      or is a mortgagee approved by the Secretary of Housing and Urban Development
      pursuant to Sections 203 and 211 of the National Housing Act.

     

    (5)
      No
      litigation is pending or, to the best of IndyMac’s knowledge, threatened against
      IndyMac that would prohibit the execution or delivery of, or performance under,
      the Pooling and Servicing Agreement by IndyMac.

     

    (6)           IndyMac
      is a member of MERS in good standing, and will comply in all material respects
      with the rules and procedures of MERS in connection with the servicing of the
      MERS Mortgage Loans for as long as such Mortgage Loans are registered with
      MERS.

     

    

     

    

    
      
        
          
          

        

        
          S-II-2

          
            

          

        

        
          
          

        

      

    

    

    Schedule
      III

    
       

      INDYMAC
        MBS,
        INC.

      MORTGAGE
        PASS-THROUGH
        CERTIFICATES,

      SERIES
        2007-AR1

    

     

    Representations
      and Warranties as to the Mortgage Loans

     

    IndyMac
      Bank, F.S.B. (“IndyMac”) hereby makes the
      representations and warranties set forth in this Schedule III to the Depositor
      and the Trustee, as of the Closing Date or if so specified in this Schedule
      III,
      as of the Cut-off Date with respect to each Mortgage
      Loan.  Capitalized terms used but not otherwise defined in this
      Schedule III shall have the meanings assigned to them in the Pooling and
      Servicing Agreement (the “Pooling and Servicing
      Agreement”) relating to the above-referenced Series, among
      IndyMac, as seller and servicer, IndyMac MBS, Inc., as depositor, and Deutsche
      Bank National Trust Company, as trustee.

     

    (1)
      The
      information set forth on Schedule I to the Pooling and Servicing Agreement
      with
      respect to each Mortgage Loan is true and correct in all material respects
      as of
      the Closing Date.

     

    (2)
      All
      regularly scheduled monthly payments due with respect to each Mortgage Loan
      up
      to and including the Due Date before the Cut-off Date have been made; and as
      of
      the Cut-off Date, no Mortgage Loan had a regularly scheduled monthly payment
      that was 60 or more days Delinquent during the twelve months before the Cut-off
      Date.

     

    (3)
      With
      respect to any Mortgage Loan that is not a Cooperative Loan, each Mortgage
      is a
      valid and enforceable first lien on the Mortgaged Property subject only to
      (a)
      the lien of nondelinquent current real property taxes and assessments and liens
      or interests arising under or as a result of any federal, state or local law,
      regulation or ordinance relating to hazardous wastes or hazardous substances
      and, if the related Mortgaged Property is a unit in a condominium project or
      planned unit development, any lien for common charges permitted by statute
      or
      homeowner association fees, (b) covenants, conditions and restrictions, rights
      of way, easements and other matters of public record as of the date of recording
      of such Mortgage, such exceptions appearing of record being generally acceptable
      to mortgage lending institutions in the area wherein the related Mortgaged
      Property is located or specifically reflected in the appraisal made in
      connection with the origination of the related Mortgage Loan, and (c) other
      matters to which like properties are commonly subject which do not materially
      interfere with the benefits of the security intended to be provided by such
      Mortgage.

     

    (4)
      Immediately before the assignment of the Mortgage Loans to the Depositor, the
      Seller had good title to, and was the sole owner of, each Mortgage Loan free
      and
      clear of any pledge, lien, encumbrance or security interest and had full right
      and authority, subject to no interest or participation of, or agreement with,
      any other party, to sell and assign the same pursuant to the Pooling and
      Servicing Agreement.

     

    (5)
      As of
      the Closing Date, there was no delinquent tax or assessment lien against the
      related Mortgaged Property.

     

    (6)
      There
      is no valid offset, defense or counterclaim to any Mortgage Note or Mortgage,
      including the obligation of the Mortgagor to pay the unpaid principal of or
      interest on such Mortgage Note.

     

    

    
      
        
          
          

        

        
          S-IV-1

          
            

          

        

        
          
          

        

      

    

    

    (7)
      There
      are no mechanics’ liens or claims for work, labor or material affecting any
      Mortgaged Property which are or may be a lien prior to or equal with, the lien
      of such Mortgage, except those which are insured against by the title insurance
      policy referred to in item (11) below.

     

    (8)  No
      Mortgaged Property has been materially damaged by water, fire, earthquake,
      windstorm, flood, tornado or similar casualty (excluding casualty from the
      presence of hazardous wastes or hazardous substances, as to which the Seller
      makes no representation) so as to affect adversely the value of the related
      Mortgaged Property as security for the Mortgage Loan.

     

    (9)
      Each
      Mortgage Loan at origination complied in all material respects with applicable
      local, state and federal laws and regulations, including usury, equal credit
      opportunity, real estate settlement procedures, truth-in-lending, and disclosure
      laws, or any noncompliance does not have a material adverse effect on the value
      of the related Mortgage Loan.

     

    (10)
      The
      Seller has not modified the Mortgage in any material respect (except that a
      Mortgage Loan may have been modified by a written instrument which has been
      recorded or submitted for recordation, if necessary, to protect the interests
      of
      the Certificateholders and which has been delivered to the Trustee); satisfied,
      cancelled or subordinated such Mortgage in whole or in part; released the
      related Mortgaged Property in whole or in part from the lien of such Mortgage;
      or executed any instrument of release, cancellation, modification or
      satisfaction with respect thereto.

     

    (11)
      A
      lender’s policy of title insurance together with a condominium endorsement and
      extended coverage endorsement, if applicable, in an amount at least equal to
      the
      Cut-off Date Principal Balance of each such Mortgage Loan or a commitment
      (binder) to issue the same was effective on the date of the origination of
      each
      Mortgage Loan and each such policy is valid and remains in full force and
      effect.

     

    (12)
      Each
      Mortgage Loan was originated (within the meaning of Section 3(a)(41) of the
      Exchange Act) by an entity that satisfied at the time of origination the
      requirements of Section 3(a)(41) of the Exchange Act.

     

    (13)
      All
      of the improvements which were included for the purpose of determining the
      Appraised Value of the Mortgaged Property lie wholly within the boundaries
      and
      building restriction lines of such property, and no improvements on adjoining
      properties encroach upon the Mortgaged Property, unless such failure to be
      wholly within such boundaries and restriction lines or such encroachment, as
      the
      case may be, does not have a material effect on the value of the Mortgaged
      Property.

     

    (14)
      As
      of the date of origination of each Mortgage Loan, no improvement located on
      or
      being part of the Mortgaged Property is in violation of any applicable zoning
      law or regulation unless such violation would not have a material adverse effect
      on the value of the related Mortgaged Property.  All inspections,
      licenses and certificates required to be made or issued with respect to all
      occupied portions of the Mortgaged Property and, with respect to the use and
      occupancy of the same, including certificates of occupancy and fire underwriting
      certificates, have been made or obtained from the appropriate authorities,
      unless the lack thereof would not have a material adverse effect on the value
      of
      the Mortgaged Property.

     

    (15)
      The
      Mortgage Note and the related Mortgage are genuine, and each is the legal,
      valid
      and binding obligation of the maker thereof, enforceable in accordance with
      its
      terms and under applicable law.

     

    

    
      
        
          
          

        

        
          A-2

          
            

          

        

        
          
          

        

      

    

    

    (16)
      The
      proceeds of the Mortgage Loan have been fully disbursed and there is no
      requirement for future advances thereunder.

     

    (17)
      The
      related Mortgage contains customary and enforceable provisions which render
      the
      rights and remedies of the holder thereof adequate for the realization against
      the Mortgaged Property of the benefits of the security, including, (i) in the
      case of a Mortgage designated as a deed of trust, by trustee’s sale, and (ii)
      otherwise by judicial foreclosure.

     

    (18)
      With
      respect to each Mortgage constituting a deed of trust, a trustee, duly qualified
      under applicable law to serve as such, has been properly designated and
      currently so serves and is named in such Mortgage, and no fees or expenses
      are
      or will become payable by the Certificateholders to the trustee under the deed
      of trust, except in connection with a trustee’s sale after default by the
      Mortgagor.

     

    (19)
      At
      the Closing Date, the improvements upon each Mortgaged Property are covered
      by a
      valid and existing hazard insurance policy with a generally acceptable carrier
      that provides for fire and extended coverage and coverage for such other hazards
      as are customarily required by institutional single family mortgage lenders
      in
      the area where the Mortgaged Property is located, and the Seller has received
      no
      notice that any premiums due and payable thereon have not been paid; the
      Mortgage obligates the Mortgagor thereunder to maintain all such insurance
      including flood insurance at the Mortgagor’s cost and
      expense.  Anything to the contrary in this item (19) notwithstanding,
      no breach of this item (19) shall be deemed to give rise to any obligation
      of
      the Seller to repurchase or substitute for such affected Mortgage Loan or Loans
      so long as the Servicer maintains a blanket policy pursuant to the second
      paragraph of Section 3.10(a) of the Pooling and Servicing
      Agreement.

     

    (20)
      If
      at the time of origination of each Mortgage Loan, the related Mortgaged Property
      was in an area then identified in the Federal Register by the Federal Emergency
      Management Agency as having special flood hazards, a flood insurance policy
      in a
      form meeting the then-current requirements of the Flood Insurance Administration
      is in effect with respect to the Mortgaged Property with a generally acceptable
      carrier.

     

    (21)
      There is no proceeding pending or threatened for the total or partial
      condemnation of any Mortgaged Property, nor is such a proceeding currently
      occurring.

     

    (22)
      There is no material event which, with the passage of time or with notice and
      the expiration of any grace or cure period, would constitute a material
      non-monetary default, breach, violation or event of acceleration under the
      Mortgage or the related Mortgage Note; and the Seller has not waived any
      material non-monetary default, breach, violation or event of
      acceleration.

     

    (23)
      Each
      Mortgage File contains an appraisal prepared in accordance with the Uniform
      Standards of Professional Appraisal Practice (USPAP).

     

    (24)
      Any
      leasehold estate securing a Mortgage Loan has a stated term of not less than
      five years in excess of the term of the related Mortgage Loan.

     

    (25)
      Each
      Mortgage Loan was selected from among the outstanding adjustable rate one-
      to
      four-family mortgage loans in the Seller’s portfolio at the Closing Date as to
      which the representations and warranties made with respect to the Mortgage
      Loans
      set forth in this Schedule III can be made.  No such selection was
      made in a manner intended to adversely affect the interests of the
      Certificateholders.

     

    

    
      
        
          
          

        

        
          A-3

          
            

          

        

        
          
          

        

      

    

    

    (26)
      No
      more than one of the Mortgage Loans is a Cooperative Loan.

     

    (27)
      None
      of the Mortgage Loans is a “high cost” loan, “covered” loan or any other
      similarly designated loan as defined under any state, local or federal
      law,  as defined by applicable predatory and abusive lending
      laws.

     

    (28)
      No
      proceeds from any Mortgage Loan underlying the Certificates were used to finance
      single-premium credit insurance policies.

     

    (29)
      None
      of the Mortgage Notes related to the Mortgage Loans impose a Prepayment Charge
      on the related Mortgage Loan for a term in excess of five years from the
      origination of the Mortgage Loan.

     

    (30)
      Each
      Mortgage Loan was in compliance with the anti-predatory lending eligibility
      for
      purchase requirements of Fannie Mae’s Selling Guide.

     

    (31)
      Each
      Mortgage Loan has been underwritten and serviced substantially in accordance
      with the Seller’s guidelines, subject to such variances as are reflected on the
      Mortgage Loan Schedule or that the Seller has approved.

     

    (32)
      No
      Mortgage Loan is a High Cost Loan or Covered Loan, as applicable (as such terms
      are defined in the then-current version of Standard & Poor's LEVELS®
Glossary, which is now Version 5.7 Revised, Appendix E) and no Mortgage Loan
      originated on or after October 1, 2002 through March 6, 2003 is governed by
      the
      Georgia Fair Lending Act.

     

    (33)
      The
      Pooling and Servicing Agreement creates a valid and continuing “security
      interest” (as defined in Section 1-201(37) of the UCC) in each Mortgage Note in
      favor of the Trustee, which security interest is prior to all other liens and
      is
      enforceable as such against creditors of and purchasers from the Depositor.
      Each
      Mortgage Note constitutes “promissory notes” (as defined in Section 9-102(a)(65)
      of the UCC). Immediately before the assignment of each Mortgage Note to the
      Trustee, the Depositor had good and marketable title to such Mortgage Note
      free
      and clear of any lien, claim, encumbrance of any Person. All original executed
      copies of each Mortgage Note have been or shall be delivered to the Trustee
      within five Business Days following the Closing Date. Other than the security
      interest granted to the Trustee, the Depositor has not pledged, assigned, sold,
      granted a security interest in, or otherwise conveyed any Mortgage Note. The
      Depositor has not authorized the filing of and is not aware of any financing
      statements against the Depositor that include a description of any of the
      Mortgage Notes. The Depositor is not aware of any judgment or tax liens filed
      against the Depositor.  None of the Mortgage Notes has any marks or
      notations indicating that they have been pledged, assigned or otherwise conveyed
      to any Person other than the Trustee.

     

    (34)
      To
      the best of the Seller’s knowledge, there was no fraud involved in the
      origination of any Mortgage Loan by the mortgagee or by the Mortgagor, any
      appraiser or any other party involved in the origination of the Mortgage
      Loan.

     

    (35)  Each
      Mortgage Loan constitutes a “qualified mortgage” within the meaning of Section
      860G(a)(3) of the Code.

     

    

     

    

    
      
        
          
          

        

        
          A-4

          
            

          

        

        
          
          

        

      

    

    

    SCHEDULE
      IV

     

    [Reserved].

     

    

      
        
          
          

        

        
          S-IV-1

          
            

          

        

        
          
          

        

      

SCHEDULE
      V

     

    FORM
      OF
      MONTHLY REPORT

     

    [On
      File
      with the Trustee]

     

    

    
      
        
          
          

        

        
          S-V-1

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      A

     

    [FORM
      OF
      SENIOR CERTIFICATE]

     

    [UNLESS
      THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY
      TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO THE ISSUER OR ITS AGENT FOR
      REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED
      IS
      REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED
      BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE &
CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE
      OF
      DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR
      TO
      ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO.,
      HAS AN INTEREST HEREIN.]

     

    SOLELY
      FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A “REGULAR INTEREST”
IN A “REAL ESTATE MORTGAGE INVESTMENT CONDUIT,” AS THOSE TERMS ARE DEFINED,
      RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986,
      AS
      AMENDED (THE “CODE”).

     

    [UNTIL
      THIS CERTIFICATE HAS BEEN THE SUBJECT OF AN ERISA-QUALIFYING UNDERWRITING,
      NEITHER THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS
      THE
      TRANSFEREE DELIVERS TO THE TRUSTEE EITHER A REPRESENTATION LETTER TO THE EFFECT
      THAT SUCH TRANSFEREE IS NOT, AND IS NOT INVESTING ON BEHALF OF OR WITH PLAN
      ASSETS OF, AN EMPLOYEE BENEFIT PLAN SUBJECT TO THE EMPLOYEE RETIREMENT INCOME
      SECURITY ACT OF 1974, AS AMENDED, OR A PLAN OR ARRANGEMENT SUBJECT TO SECTION
      4975 OF THE CODE, OR AN OPINION OF COUNSEL IN ACCORDANCE WITH THE PROVISIONS
      OF
      THE AGREEMENT REFERRED TO HEREIN.  NOTWITHSTANDING ANYTHING ELSE TO
      THE CONTRARY HEREIN, UNTIL THIS CERTIFICATE HAS BEEN THE SUBJECT OF AN
      ERISA-QUALIFYING UNDERWRITING, ANY PURPORTED TRANSFER OF THIS CERTIFICATE TO
      OR
      ON BEHALF OF A BENEFIT PLAN OR ARRANGEMENT SUBJECT TO ERISA OR TO SECTION 4975
      OF THE CODE WITHOUT THE OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE AS
      DESCRIBED ABOVE SHALL BE VOID AND OF NO EFFECT.]

     

    

     

    

    
      
        
          
          

        

        
          A-1

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              Certificate
                No.

            	
              :

            	 
	 	 	 
	
              Cut-off  Date

            	
              :

            	 
	 	 	 
	
              First
                Distribution Date

            	
              :

            	 
	 	 	 
	
              Initial
                Certificate Balance of

              this
                Certificate

              (“Denomination”)

            	
               

               

              :

            	
               

               

              $

            
	 	 	 
	
              Initial
                Certificate Balances of

              all
                Certificates of this Class

            	
               

              :

            	
               

              $

            
	 	 	 
	
              CUSIP

            	
              :

            	 
	 	 	 
	
              Interest
                Rate

            	
              :

            	
              %

            
	 	 	 
	
              Maturity
                Date

            	
              :

            	 

    

    INDYMAC
      MBS, INC.

     

    IndyMac
      IMSC Mortgage Loan Trust 200_-_

     

    Mortgage
      Pass-Through Certificates, Series 200_-_

     

    Class
      [__]

     

    evidencing
      a percentage interest in the distributions allocable to the Certificates of
      the
      above-referenced Class with respect to a Trust Fund consisting primarily of
      a
      pool of conventional mortgage loans (the “Mortgage Loans”) secured by first
      liens on one- to four-family residential properties.

     

    IndyMac
      MBS, Inc., as Depositor

     

    Principal
      in respect of this Certificate is distributable monthly as set forth herein
      or
      in the Agreement (defined below).  Accordingly, the Certificate
      Balance at any time may be less than the Certificate Balance as set forth
      herein.  This Certificate does not evidence an obligation of, or an
      interest in, and is not guaranteed by the Depositor, the Seller, the Servicer
      or
      the Trustee referred to below or any of their respective
      affiliates.  Neither this Certificate nor the Mortgage Loans are
      guaranteed or insured by any governmental agency or
      instrumentality.

     

    This
      certifies that
                                
      is the registered owner of the Percentage Interest evidenced by this Certificate
      (obtained by dividing the denomination of this Certificate by the aggregate
      Initial Certificate Balances of all Certificates of the Class to which this
      Certificate belongs) in certain monthly distributions with respect to a Trust
      Fund consisting primarily of the Mortgage Loans deposited by IndyMac MBS, Inc.
      (the “Depositor”).  The Trust Fund was created pursuant to a Pooling
      and Servicing Agreement dated as of the Cut-off Date specified above (the
“Agreement”) among the Depositor, IndyMac Bank, F.S.B., as seller (in such
      capacity, the “Seller”) and as servicer (in such capacity, the “Servicer”), and
      Deutsche Bank National Trust Company, as trustee (the “Trustee”).  To
      the extent not defined herein, the capitalized terms used herein have the
      meanings assigned in the Agreement.  This Certificate is issued under
      and is subject to the terms, provisions and conditions of the Agreement, to
      which Agreement the Holder of this Certificate by virtue of the acceptance
      hereof assents and by which such Holder is bound.

     

    

    
      
        
          
          

        

        
          A-2

          
            

          

        

        
          
          

        

      

    

    

    [Until
      this certificate has been the subject of an ERISA-Qualifying Underwriting,
      no
      transfer of a Certificate of this Class shall be made unless the Trustee shall
      have received either (i) a representation letter from the transferee of such
      Certificate, acceptable to and in form and substance satisfactory to the
      Trustee, to the effect that such transferee is not an employee benefit plan
      subject to Section 406 of ERISA or Section 4975 of the Code, or a person
      investing on behalf of or with plan assets of any such plan, which
      representation letter shall not be an expense of the Trustee or the Servicer,
      or
      (ii) in the case of any such Certificate presented for registration in the
      name
      of an employee benefit plan subject to ERISA or Section 4975 of the Code (or
      comparable provisions of any subsequent enactments), or a trustee of any such
      plan or any other person acting on behalf of any such plan, an Opinion of
      Counsel satisfactory to the Trustee to the effect that the purchase and holding
      of such Certificate will not result in a nonexempt prohibited transaction under
      Section 406 of ERISA or Section 4975 of the Code and will not subject the
      Trustee or the Servicer to any obligation in addition to those undertaken in
      the
      Agreement, which Opinion of Counsel shall not be an expense of the Trustee,
      the
      Servicer, or the Trust Fund.  Notwithstanding anything else to the
      contrary herein, until this certificate has been the subject of an
      ERISA-Qualifying Underwriting, any purported transfer of a Certificate of this
      Class to or on behalf of an employee benefit plan subject to ERISA or to the
      Code without the opinion of counsel satisfactory to the Trustee as described
      above shall be void and of no effect.]

     

    Reference
      is hereby made to the further provisions of this Certificate set forth on the
      reverse hereof, which further provisions shall for all purposes have the same
      effect as if set forth at this place.

     

    This
      Certificate shall not be entitled to any benefit under the Agreement or be
      valid
      for any purpose unless manually countersigned by an authorized signatory of
      the
      Trustee.

     

    

    
      
        
          
          

        

        
          A-3

          
            

          

        

        
          
          

        

      

    

    

    IN
      WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
      executed.

     

    Dated:  ____________,
      20__

     

    
      	 	
              DEUTSCHE
                BANK NATIONAL TRUST COMPANY,

            	 
	 	 	
              as
                Trustee

            	 
	 	 	 	 
	 	 	 	 
	
               

            	
              By:
                

            	 	 

    

     

    Countersigned:

     

    
       

      
        	
                By:
                  

              	 	 
	 	 	
                Authorized
                  Signatory of

              	 
	 	 	
                DEUTSCHE
                  BANK NATIONAL TRUST COMPANY,

              	 
	 	 	
                as
                  Trustee

              	 

      

       

    

    

    
      
        
          
          

        

        
          A-4

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      B

     

    [FORM
      OF
      SUBORDINATED CERTIFICATE]

     

    [UNLESS
      THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY
      TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO THE ISSUER OR ITS AGENT FOR
      REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED
      IS
      REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED
      BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE &
CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE
      OF
      DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR
      TO
      ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO.,
      HAS AN INTEREST HEREIN.]

     

    SOLELY
      FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A “REGULAR INTEREST”
IN A “REAL ESTATE MORTGAGE INVESTMENT CONDUIT,” AS THOSE TERMS ARE DEFINED,
      RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986,
      AS
      AMENDED (THE “CODE”).

     

    THIS
      CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO CERTAIN CERTIFICATES AS
      DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.

     

    [THIS
      CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
      (THE “ACT”).  ANY RESALE OR TRANSFER OF THIS CERTIFICATE WITHOUT
      REGISTRATION THEREOF UNDER THE ACT MAY ONLY BE MADE IN A TRANSACTION EXEMPTED
      FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE
      PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.]

     

    [UNTIL
      THIS CERTIFICATE HAS BEEN THE SUBJECT OF AN ERISA-QUALIFYING UNDERWRITING,
      NEITHER THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS
      THE
      TRANSFEREE DELIVERS TO THE TRUSTEE EITHER A REPRESENTATION LETTER TO THE EFFECT
      THAT SUCH TRANSFEREE IS NOT, AND IS NOT INVESTING ON BEHALF OF OR WITH PLAN
      ASSETS OF, AN EMPLOYEE BENEFIT PLAN SUBJECT TO THE EMPLOYEE RETIREMENT INCOME
      SECURITY ACT OF 1974, AS AMENDED, OR A PLAN OR ARRANGEMENT SUBJECT TO SECTION
      4975 OF THE CODE, OR AN OPINION OF COUNSEL IN ACCORDANCE WITH THE PROVISIONS
      OF
      THE AGREEMENT REFERRED TO HEREIN.  NOTWITHSTANDING ANYTHING ELSE TO
      THE CONTRARY HEREIN, UNTIL THIS CERTIFICATE HAS BEEN THE SUBJECT OF AN
      ERISA-QUALIFYING UNDERWRITING, ANY PURPORTED TRANSFER OF THIS CERTIFICATE TO
      OR
      ON BEHALF OF A BENEFIT PLAN OR ARRANGEMENT SUBJECT TO ERISA OR TO SECTION 4975
      OF THE CODE WITHOUT THE OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE AS
      DESCRIBED ABOVE SHALL BE VOID AND OF NO EFFECT.]

     

    

    
      
        
          
          

        

        
          B-1

          
            

          

        

        
          
          

        

      

    

    

    [NEITHER
      THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS THE
      TRANSFEREE REPRESENTS TO THE TRUSTEE THAT SUCH TRANSFEREE IS NOT AND IS NOT
      INVESTING ON BEHALF OF OR WITH PLAN ASSETS OF AN EMPLOYEE BENEFIT PLAN SUBJECT
      TO THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (“ERISA”), OR
      A PLAN SUBJECT TO SECTION 4975 OF THE CODE, OR, IF THE CERTIFICATE HAS BEEN
      THE
      SUBJECT OF AN ERISA-QUALIFYING UNDERWRITING, DELIVERS A REPRESENTATION IN
      ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN, OR DELIVERS
      TO THE TRUSTEE AN OPINION OF COUNSEL IN ACCORDANCE WITH THE PROVISIONS OF THE
      AGREEMENT REFERRED TO HEREIN.  NOTWITHSTANDING ANYTHING ELSE TO THE
      CONTRARY HEREIN, ANY PURPORTED TRANSFER OF THIS CERTIFICATE TO OR ON BEHALF
      OF
      AN EMPLOYEE BENEFIT PLAN SUBJECT TO ERISA OR TO SECTION 4975 OF THE CODE WITHOUT
      THE OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE AS DESCRIBED ABOVE SHALL
      BE
      VOID AND OF NO EFFECT.]

     

    

    
      
        
          
          

        

        
          B-2

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              Certificate
                No.

            	
              :

            	 
	 	 	 
	
              Cut-off  Date

            	
              :

            	 
	 	 	 
	
              First
                Distribution Date

            	
              :

            	 
	 	 	 
	
              Initial
                Certificate Balance of

              this
                Certificate

              (“Denomination”)

            	
               

               

              :

            	
               

               

              $

            
	 	 	 
	
              Initial
                Certificate Balances of

              all
                Certificates of this Class

            	
               

              :

            	
               

              $

            
	 	 	 
	
              CUSIP

            	
              :

            	 
	 	 	 

    

    INDYMAC
      MBS, INC.

    IndyMac
      IMSC Mortgage Loan Trust 200_-_

    Mortgage
      Pass-Through Certificates, Series 200_-_

    Class
      [___]

     

    evidencing
      a percentage interest in the distributions allocable to the Certificates of
      the
      above-referenced Class with respect to a Trust Fund consisting primarily of
      a
      pool of conventional mortgage loans (the “Mortgage Loans”) secured by first
      liens on one- to four-family residential properties.

     

    IndyMac
      MBS, Inc., as Depositor

     

    Principal
      in respect of this Certificate is distributable monthly as set forth herein
      or
      in the Agreement (defined below).  Accordingly, the Certificate
      Balance at any time may be less than the Certificate Balance as set forth
      herein.  This Certificate does not evidence an obligation of, or an
      interest in, and is not guaranteed by the Depositor, the Seller, the Servicer
      or
      the Trustee referred to below or any of their respective
      affiliates.  Neither this Certificate nor the Mortgage Loans are
      guaranteed or insured by any governmental agency or
      instrumentality.

     

    This
      certifies that
                                
is the registered owner of the Percentage Interest evidenced by this
      Certificate (obtained by dividing the denomination of this Certificate by the
      aggregate Initial Certificate Balances of the denominations of all Certificates
      of the Class to which this Certificate belongs) in certain monthly distributions
      with respect to a Trust Fund consisting primarily of the Mortgage Loans
      deposited by IndyMac MBS, Inc. (the “Depositor”).  The Trust Fund was
      created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off
      Date specified above (the “Agreement”) among the Depositor, IndyMac Bank,
      F.S.B., as seller (in such capacity, the “Seller”), and as servicer (in such
      capacity, the “Servicer”), and Deutsche Bank National Trust Company, as trustee
      (the “Trustee”).  To the extent not defined herein, the capitalized
      terms used herein have the meanings assigned in the Agreement.  This
      Certificate is issued under and is subject to the terms, provisions and
      conditions of the Agreement, to which Agreement the Holder of this Certificate
      by virtue of the acceptance hereof assents and by which such Holder is
      bound.

     

    [No
      transfer of a Certificate of this Class shall be made unless such transfer
      is
      made pursuant to an effective registration statement under the Securities Act
      and any applicable state securities laws or is exempt from the registration
      requirements under said Act and such laws.  In the event that a
      transfer is to be made in reliance upon an exemption from the Securities Act
      and
      such laws, in order to assure compliance with the Securities Act and such laws,
      the Certificateholder desiring to effect such transfer and such
      Certificateholder’s prospective transferee shall each certify to the Trustee in
      writing the facts surrounding the transfer.  In the event that such a
      transfer is to be made within three years from the date of the initial issuance
      of Certificates pursuant hereto, there shall also be delivered (except in the
      case of a transfer pursuant to Rule 144A of the Securities Act) to the Trustee
      an Opinion of Counsel that such transfer may be made pursuant to an exemption
      from the Securities Act and such state securities laws, which Opinion of Counsel
      shall not be obtained at the expense of the Trustee, the Seller, the Servicer
      or
      the Depositor.  The Holder hereof desiring to effect such transfer
      shall, and does hereby agree to, indemnify the Trustee and the Depositor against
      any liability that may result if the transfer is not so exempt or is not made
      in
      accordance with such federal and state laws.]

     

    

    
      
        
          
          

        

        
          B-3

          
            

          

        

        
          
          

        

      

    

    

    [Until
      this certificate has been the subject of an ERISA-Qualifying Underwriting,
      no
      transfer of a Certificate of this Class shall be made unless the Trustee shall
      have received either (i) a representation letter from the transferee of such
      Certificate, acceptable to and in form and substance satisfactory to the
      Trustee, to the effect that such transferee is not an employee benefit plan
      subject to Section 406 of ERISA or Section 4975 of the Code, or a person
      investing on behalf of or with plan assets of any such plan, which
      representation letter shall not be an expense of the Trustee or the Servicer,
      or
      (ii) in the case of any such Certificate presented for registration in the
      name
      of an employee benefit plan subject to ERISA or Section 4975 of the Code (or
      comparable provisions of any subsequent enactments), or a trustee of any such
      plan or any other person acting on behalf of any such plan, an Opinion of
      Counsel satisfactory to the Trustee to the effect that the purchase and holding
      of such Certificate will not result in a nonexempt prohibited transaction under
      Section 406 of ERISA or Section 4975 of the Code and will not subject the
      Trustee or the Servicer to any obligation in addition to those undertaken in
      the
      Agreement, which Opinion of Counsel shall not be an expense of the Trustee,
      the
      Servicer, or the Trust Fund.  Notwithstanding anything else to the
      contrary herein, until this certificate has been the subject of an
      ERISA-Qualifying Underwriting, any purported transfer of a Certificate of this
      Class to or on behalf of an employee benefit plan subject to ERISA or to the
      Code without the opinion of counsel satisfactory to the Trustee as described
      above shall be void and of no effect.]

     

    [No
      transfer of a Certificate of this Class shall be made unless the Trustee shall
      have received either (i) a representation [letter] from the transferee of such
      Certificate, acceptable to and in form and substance satisfactory to the
      Trustee, to the effect that (x) such transferee is not an employee benefit
      plan
      or other benefit plan subject to Section 406 of ERISA or Section 4975 of the
      Code, or a person acting on behalf of or investing plan assets of any such
      plan,
      which representation letter shall not be an expense of the Trustee or the
      Servicer, or (y) if the purchaser is an insurance company and the Certificate
      has been the subject of an ERISA-Qualifying Underwriting, a representation
      that
      the purchaser is an insurance company which is purchasing such Certificates
      with
      funds contained in an “insurance company general account” (as such term is
      defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 (“PTCE
      95-60”)) and that the purchase and holding of such Certificates are covered
      under Sections I and III of PTCE 95-60 or (ii) in the case of any such
      Certificate presented for registration in the name of an employee benefit plan
      subject to ERISA or Section 4975 of the Code (or comparable provisions of any
      subsequent enactments), or a trustee of any such plan or any other person acting
      on behalf of any such plan, an Opinion of Counsel satisfactory to the Trustee
      to
      the effect that the purchase or holding of such Certificate will not result
      in a
      nonexempt prohibited transaction under ERISA or Section 4975 of the Code and
      will not subject the Trustee or the Servicer to any obligation in addition
      to
      those undertaken in the Agreement, which Opinion of Counsel shall not be an
      expense of the Trustee, the Servicer or the Trust
      Fund.  Notwithstanding anything else to the contrary herein, any
      purported transfer of a Certificate of this Class to or on behalf of an employee
      benefit plan subject to ERISA or to Section 4975 of the Code without the opinion
      of counsel satisfactory to the Trustee as described above shall be void and
      of
      no effect.]

     

    

    
      
        
          
          

        

        
          B-4

          
            

          

        

        
          
          

        

      

    

    

    Reference
      is hereby made to the further provisions of this Certificate set forth on the
      reverse hereof, which further provisions shall for all purposes have the same
      effect as if set forth at this place.

     

    This
      Certificate shall not be entitled to any benefit under the Agreement or be
      valid
      for any purpose unless manually countersigned by an authorized signatory of
      the
      Trustee.

     

    

    
      
        
          
          

        

        
          B-5

          
            

          

        

        
          
          

        

      

    

    

    IN
      WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
      executed.

     

    
      Dated:  ____________,
        20__

       

      
        	 	
                DEUTSCHE
                  BANK NATIONAL TRUST COMPANY,

              	 
	 	 	
                as
                  Trustee

              	 
	 	 	 	 
	 	 	 	 
	
                 

              	
                By:
                  

              	 	 

      

       

      Countersigned:

       

      
         

        
          	
                  By:
                    

                	 	 
	 	 	
                  Authorized
                    Signatory of

                	 
	 	 	
                  DEUTSCHE
                    BANK NATIONAL TRUST COMPANY,

                	 
	 	 	
                  as
                    Trustee

                	 

        

         

      

    

    
      
        
          
          

        

        
          B-6

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      C

     

    [FORM
      OF
      CLASS A-R CERTIFICATE]

     

    SOLELY
      FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A “RESIDUAL INTEREST”
IN A “REAL ESTATE MORTGAGE INVESTMENT CONDUIT,” AS THOSE TERMS ARE DEFINED,
      RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986,
      AS
      AMENDED (THE “CODE”).

     

    NEITHER
      THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS THE PROPOSED
      TRANSFEREE DELIVERS TO THE TRUSTEE A TRANSFER AFFIDAVIT IN ACCORDANCE WITH
      THE
      PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.

     

    NEITHER
      THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS THE
      TRANSFEREE REPRESENTS TO THE TRUSTEE THAT SUCH TRANSFEREE IS NOT AND IS NOT
      INVESTING ON BEHALF OF OR WITH PLAN ASSETS OF AN EMPLOYEE BENEFIT PLAN SUBJECT
      TO THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (“ERISA”), OR
      A PLAN SUBJECT TO SECTION 4975 OF THE CODE, OR, IF SUCH TRANSFEREE IS AN
      INSURANCE COMPANY, DELIVERS A REPRESENTATION IN ACCORDANCE WITH THE PROVISIONS
      OF THE AGREEMENT REFERRED TO HEREIN, OR DELIVERS TO THE TRUSTEE AN OPINION
      OF
      COUNSEL IN ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO
      HEREIN.  NOTWITHSTANDING ANYTHING ELSE TO THE CONTRARY HEREIN, ANY
      PURPORTED TRANSFER OF THIS CERTIFICATE TO OR ON BEHALF OF AN EMPLOYEE BENEFIT
      PLAN SUBJECT TO ERISA OR TO SECTION 4975 OF THE CODE WITHOUT THE OPINION OF
      COUNSEL SATISFACTORY TO THE TRUSTEE AS DESCRIBED ABOVE SHALL BE VOID AND OF
      NO
      EFFECT.

     

    

    
      
        
          
          

        

        
          C-1

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              Certificate
                No.

            	
              :

            	 
	 	 	 
	
              Cut-off  Date

            	
              :

            	 
	 	 	 
	
              First
                Distribution Date

            	
              :

            	 
	 	 	 
	
              Initial
                Certificate Balance of

              this
                Certificate

              (“Denomination”)

            	
               

               

              :

            	
               

               

              $

            
	 	 	 
	
              Initial
                Certificate Balances of

              all
                Certificates of this Class

            	
               

              :

            	
               

              $

            
	 	 	 
	
              CUSIP

            	
              :

            	 
	 	 	 

    

    INDYMAC
      MBS, INC.

    IndyMac
      IMSC Mortgage Loan Trust 200_-_

    Mortgage
      Pass-Through Certificates, Series 200_-_

     

    evidencing
      the distributions allocable to the Class A-R Certificates with respect to a
      Trust Fund consisting primarily of a pool of conventional mortgage loans (the
      “Mortgage Loans”) secured by first liens on one- to four-family residential
      properties.

     

    IndyMac
      MBS, Inc., as Depositor

     

    Principal
      in respect of this Certificate is distributable monthly as set forth herein
      or
      in the Agreement (defined below).  Accordingly, the Certificate
      Balance at any time may be less than the Certificate Balance as set forth
      herein.  This Certificate does not evidence an obligation of, or an
      interest in, and is not guaranteed by the Depositor, the Seller, the Servicer
      or
      the Trustee referred to below or any of their respective
      affiliates.  Neither this Certificate nor the Mortgage Loans are
      guaranteed or insured by any governmental agency or
      instrumentality.

     

    This
      certifies that
                                
      is the registered owner of the Percentage Interest (obtained by dividing the
      denomination of this Certificate by the aggregate Initial Certificate Balances
      of the denominations of all Certificates of the Class to which this Certificate
      belongs) in certain monthly distributions with respect to a Trust Fund
      consisting of the Mortgage Loans deposited by IndyMac MBS, Inc. (the
“Depositor”).  The Trust Fund was created pursuant to a Pooling and
      Servicing Agreement dated as of the Cut-off Date specified above (the
“Agreement”) among the Depositor, IndyMac Bank, F.S.B., as seller (in such
      capacity, the “Seller”) and as servicer (in such capacity, the “Servicer”), and
      Deutsche Bank National Trust Company, as trustee (the “Trustee”).  To
      the extent not defined herein, the capitalized terms used herein have the
      meanings assigned in the Agreement.  This Certificate is issued under
      and is subject to the terms, provisions and conditions of the Agreement, to
      which Agreement the Holder of this Certificate by virtue of the acceptance
      hereof assents and by which such Holder is bound.

     

    Any
      distribution of the proceeds of any remaining assets of the Trust Fund will
      be
      made only upon presentment and surrender of this Class A-R Certificate at the
      Corporate Trust Office.

     

    

    
      
        
          
          

        

        
          C-2

          
            

          

        

        
          
          

        

      

    

    

    No
      transfer of a Class A-R Certificate shall be made unless the Trustee shall
      have
      received either (i) a representation letter from the transferee of such
      Certificate, acceptable to and in form and substance satisfactory to the
      Trustee, to the effect that such transferee is not an employee benefit plan
      subject to Section 406 of ERISA or Section 4975 of the Code, nor a person
      investing on behalf of or with plan assets of any such plan, which
      representation letter shall not be an expense of the Trustee or the Servicer,
      (ii) if the purchaser is an insurance company, a representation that the
      purchaser is an insurance company which is purchasing such Certificate with
      funds contained in an “insurance company general account” (as such term is
      defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 (“PTCE
      95-60”)) and that the purchase and holding of such Certificate are covered under
      Sections I and III of PTCE 95-60 or (iii) in the case of any such Certificate
      presented for registration in the name of an employee benefit plan subject
      to
      ERISA or Section 4975 of the Code (or comparable provisions of any subsequent
      enactments), or a trustee of any such plan or any other person acting on behalf
      of any such plan, an Opinion of Counsel satisfactory to the Trustee to the
      effect that the purchase or holding of such Class A-R Certificate will not
      result in a nonexempt prohibited transaction under Section 406 of ERISA or
      Section 4975 of the Code and will not subject the Trustee or the Servicer to
      any
      obligation in addition to those undertaken in the Agreement, which Opinion
      of
      Counsel shall not be an expense of the Trustee, the Servicer or the Trust
      Fund.  Notwithstanding anything else to the contrary herein, any
      purported transfer of a Class A-R Certificate to or on behalf of an employee
      benefit plan subject to ERISA or to Section 4975 of the Code without the opinion
      of counsel satisfactory to the Trustee as described above shall be void and
      of
      no effect.

     

    Each
      Holder of this Class A-R Certificate will be deemed to have agreed to be bound
      by the restrictions of the Agreement, including but not limited to the
      restrictions that (i) each person holding or acquiring any Ownership Interest
      in
      this Class A-R Certificate must be a Permitted Transferee, (ii) no Ownership
      Interest in this Class A-R Certificate may be transferred without delivery
      to
      the Trustee of (a) a transfer affidavit of the proposed transferee and (b)
      a
      transfer certificate of the transferor, each of such documents to be in the
      form
      described in the Agreement, (iii) each person holding or acquiring any Ownership
      Interest in this Class A-R Certificate must agree to require a transfer
      affidavit and to deliver a transfer certificate to the Trustee as required
      pursuant to the Agreement, (iv) each person holding or acquiring an Ownership
      Interest in this Class A-R Certificate must agree not to transfer an Ownership
      Interest in this Class A-R Certificate if it has actual knowledge that the
      proposed transferee is not a Permitted Transferee and (v) any attempted or
      purported transfer of any Ownership Interest in this Class A-R Certificate
      in
      violation of such restrictions will be absolutely null and void and will vest
      no
      rights in the purported transferee.

     

    Reference
      is hereby made to the further provisions of this Certificate set forth on the
      reverse hereof, which further provisions shall for all purposes have the same
      effect as if set forth at this place.

     

    This
      Certificate shall not be entitled to any benefit under the Agreement or be
      valid
      for any purpose unless manually countersigned by an authorized signatory of
      the
      Trustee.

     

    

    
      
        
          
          

        

        
          C-3

          
            

          

        

        
          
          

        

      

    

    

    IN
      WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
      executed.

     

    
      Dated:  ____________,
        20__

       

      
        	 	
                DEUTSCHE
                  BANK NATIONAL TRUST COMPANY,

              	 
	 	 	
                as
                  Trustee

              	 
	 	 	 	 
	 	 	 	 
	
                 

              	
                By:
                  

              	 	 

      

       

      Countersigned:

       

      
         

        
          	
                  By:
                    

                	 	 
	 	 	
                  Authorized
                    Signatory of

                	 
	 	 	
                  DEUTSCHE
                    BANK NATIONAL TRUST COMPANY,

                	 
	 	 	
                  as
                    Trustee

                	 

        

         

      

    

    
      
        
          
          

        

        
          C-4

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      D

     

    [Reserved].

    

    

    

    
      
        
          
          

        

        
          D-1

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      E

     

    [Form
      of
      Reverse of Certificates]

     

    INDYMAC
      MBS, INC.

    IndyMac
      IMSC Mortgage Loan Trust 200_-_

    Mortgage
      Pass-Through Certificates, Series 200_-_

     

    This
      Certificate is one of a duly authorized issue of Certificates designated as
      IndyMac MBS, Inc. Mortgage Pass-Through Certificates, of the Series specified
      on
      the face hereof (herein collectively called the “Certificates”), and
      representing a beneficial ownership interest in the Trust Fund created by the
      Agreement.

     

    The
      Certificateholder, by its acceptance of this Certificate, agrees that it will
      look solely to the funds on deposit in the Distribution Account for payment
      hereunder and that the Trustee is not liable to the Certificateholders for
      any
      amount payable under this Certificate or the Agreement or, except as expressly
      provided in the Agreement, subject to any liability under the
      Agreement.

     

    This
      Certificate does not purport to summarize the Agreement and reference is made
      to
      the Agreement for the interests, rights and limitations of rights, benefits,
      obligations and duties evidenced thereby, and the rights, duties and immunities
      of the Trustee.

     

    Pursuant
      to the terms of the Agreement, a distribution will be made on the 25th day
      of
      each month or, if such 25th day is not a Business Day, the Business Day
      immediately following (the “Distribution Date”), commencing on the first
      Distribution Date specified on the face hereof, to the Person in whose name
      this
      Certificate is registered at the close of business on the applicable Record
      Date
      in an amount equal to the product of the Percentage Interest evidenced by this
      Certificate and the amount required to be distributed to Holders of Certificates
      of the Class to which this Certificate belongs on such Distribution Date
      pursuant to the Agreement.  The Record Date applicable to each
      Distribution Date is the last Business Day of the month next preceding the
      month
      of such Distribution Date.

     

    Distributions
      on this Certificate shall be made by wire transfer of immediately available
      funds to the account of the Holder hereof at a bank or other entity having
      appropriate facilities therefor, if such Certificateholder shall have so
      notified the Trustee in writing at least five Business Days prior to the Record
      Date and such Certificateholder shall satisfy the conditions to receive such
      form of payment set forth in the Agreement, or, if not, by check mailed by
      first
      class mail to the address of such Certificateholder appearing in the Certificate
      Register.  The final distribution on each Certificate will be made in
      like manner, but only upon presentment and surrender of such Certificate at
      the
      Corporate Trust Office or such other location specified in the notice to
      Certificateholders of such final distribution.

     

    The
      Agreement permits, with certain exceptions therein provided, the amendment
      thereof and the modification of the rights and obligations of the Trustee and
      the rights of the Certificateholders under the Agreement at any time by the
      Depositor, the Servicer and the Trustee with the consent of the Holders of
      Certificates affected by such amendment evidencing the requisite Percentage
      Interest, as provided in the Agreement.  Any such consent by the
      Holder of this Certificate shall be conclusive and binding on such Holder and
      upon all future Holders of this Certificate and of any Certificate issued upon
      the transfer hereof or in exchange therefor or in lieu hereof whether or not
      notation of such consent is made upon this Certificate.  The Agreement
      also permits the amendment thereof, in certain limited circumstances, without
      the consent of the Holders of any of the Certificates.

     

    

    
      
        
          
          

        

        
          E-1

          
            

          

        

        
          
          

        

      

    

    

    As
      provided in the Agreement and subject to certain limitations therein set forth,
      the transfer of this Certificate is registrable in the Certificate Register
      of
      the Trustee upon surrender of this Certificate for registration of transfer
      at
      the Corporate Trust Office, accompanied by a written instrument of transfer
      in
      form satisfactory to the Trustee and the Certificate Registrar duly executed
      by
      the holder hereof or such holder’s attorney duly authorized in writing, and
      thereupon one or more new Certificates of the same Class in authorized
      denominations and evidencing the same aggregate Percentage Interest in the
      Trust
      Fund will be issued to the designated transferee or transferees.

     

    The
      Certificates are issuable only as registered Certificates without coupons in
      denominations specified in the Agreement.  As provided in the
      Agreement and subject to certain limitations therein set forth, Certificates
      are
      exchangeable for new Certificates of the same Class in authorized denominations
      and evidencing the same aggregate Percentage Interest, as requested by the
      Holder surrendering the same.

     

    No
      service charge will be made for any such registration of transfer or exchange,
      but the Trustee may require payment of a sum sufficient to cover any tax or
      other governmental charge payable in connection therewith.

     

    The
      Depositor, the Servicer, the Seller and the Trustee and any agent of the
      Depositor or the Trustee may treat the Person in whose name this Certificate
      is
      registered as the owner hereof for all purposes, and neither the Depositor,
      the
      Trustee, nor any such agent shall be affected by any notice to the
      contrary.

     

    On
      any
      Distribution Date on which the aggregate Stated Principal Balance of the
      Mortgage Loans in the mortgage pool is less than 10% of the Cut-off Date Pool
      Principal Balance, the Servicer will have the option to repurchase, in whole,
      from the Trust Fund all remaining Mortgage Loans in the mortgage pool and all
      property acquired in respect of the Mortgage Loans in the mortgage pool at
      a
      purchase price determined as provided in the Agreement.  In the event
      that no such optional termination occurs, the obligations and responsibilities
      created by the Agreement will terminate upon the later of the maturity or other
      liquidation (or any advance with respect thereto) of the last Mortgage Loan
      remaining in the Trust Fund or the disposition of all property in respect
      thereof and the distribution to Certificateholders of all amounts required
      to be
      distributed pursuant to the Agreement.  In no event, however, will the
      trust created by the Agreement continue beyond the expiration of 21 years from
      the death of the last survivor of the descendants living at the date of the
      Agreement of a certain person named in the Agreement.

     

    Any
      term
      used herein that is defined in the Agreement shall have the meaning assigned
      in
      the Agreement, and nothing herein shall be deemed inconsistent with that
      meaning.

     

    

    
      
        
          
          

        

        
          E-2

          
            

          

        

        
          
          

        

      

    

    

    
      
         

        ASSIGNMENT

         

        FOR
          VALUE
          RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s)
          unto

        
          

        

         

        
          

        

         

        
          

        

        (Please
          print or typewrite name and address including postal zip code of
          assignee)

         

        the
          Percentage Interest evidenced by the within Certificate and hereby authorizes
          the transfer of registration of such Percentage Interest to assignee on
          the
          Certificate Register of the Trust Fund.

         

        I
          (We)
          further direct the Trustee to issue a new Certificate of a like denomination
          and
          Class, to the above named assignee and deliver such Certificate to the
          following
          address:

         

        
          
            

          
                                                                                                                    

         

        Dated:

         

        
          	 	  	 
	 	Signature
                  by or on behalf of
                  assignor 

        

         

         

        DISTRIBUTION
          INSTRUCTIONS

         

        The
          assignee should include the following for purposes of distribution:

         

        Distributions
          shall be made, by wire transfer or otherwise, in immediately available
          funds to,
____________________________________________________________________________________________________

         _________________________________________________________________________________________________________________________________________________________________________________

        
           _________________________________________________________________________________________________________________________________________________________________________________

          for
            the
            account
            of _________________________________________________________________________________________________________________________________________________________________  
,

        

        account
          number
_____________________________________________________________ ,
          or, if mailed by  check, to
________________________________________________________________________________    
.

        Applicable
          statements should be mailed
          to ______________________________________________________________________________________________________________________________________________ 
,

        
           _______________________________________________________________________________________________________________________________________________________________________________

           ______________________________________________________________________________________________________________________________________________________________________________
            .
                                                                                                                            

        This
          information is provided
          by ________________________________________________________________________________________________________________________________________________,

        the
          assignee named above,
          or ________________________________________________________________________________________________________________________________________________________,

         

        as
          its
          agent.

      

    

    

    
      
        
          
          

        

        
          E-3

          
            

          

        

        
          
          

        

      

    

    

     

    

    
      	
              STATE
                OF CALIFORNIA

            	
              )

            
	 	
              :  ss.:

            
	
              COUNTY
                OF _____________

            	
              )

            
	 	 

    

    On
      the
  th day of
             ,
      20    before me, a notary public in and for said State,
      personally appeared
                               ,
      known to me who, being by me duly sworn, did depose and say that he executed
      the
      foregoing instrument.

     

    
       

      
        	 	  	 
	 	
                Notary
                  Public

              

      

    

     

    [Notarial
      Seal]

     

    

    
      
        
          
          

        

        
          E-4

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      F-1

     

    [FORM
      OF
      CLASS P-[1][2] CERTIFICATE]

     

    SOLELY
      FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A “REGULAR INTEREST”
IN A “REAL ESTATE MORTGAGE INVESTMENT CONDUIT,” AS THOSE TERMS ARE DEFINED,
      RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986,
      AS
      AMENDED (THE “CODE”).

     

    THIS
      CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
      (THE “ACT”).  ANY RESALE OR TRANSFER OF THIS CERTIFICATE WITHOUT
      REGISTRATION THEREOF UNDER THE ACT MAY ONLY BE MADE IN A TRANSACTION EXEMPTED
      FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE
      PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.

     

    [NEITHER
      THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS THE
      TRANSFEREE REPRESENTS TO THE TRUSTEE THAT SUCH TRANSFEREE IS NOT AND IS NOT
      INVESTING ON BEHALF OF OR WITH PLAN ASSETS OF AN EMPLOYEE BENEFIT PLAN SUBJECT
      TO THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (“ERISA”), OR
      A PLAN SUBJECT TO SECTION 4975 OF THE CODE, OR, IF THE CERTIFICATE HAS BEEN
      THE
      SUBJECT OF AN ERISA-QUALIFYING UNDERWRITING, DELIVERS A REPRESENTATION IN
      ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN, OR DELIVERS
      TO THE TRUSTEE AN OPINION OF COUNSEL IN ACCORDANCE WITH THE PROVISIONS OF THE
      AGREEMENT REFERRED TO HEREIN.  NOTWITHSTANDING ANYTHING ELSE TO THE
      CONTRARY HEREIN, ANY PURPORTED TRANSFER OF THIS CERTIFICATE TO OR ON BEHALF
      OF
      AN EMPLOYEE BENEFIT PLAN SUBJECT TO ERISA OR TO SECTION 4975 OF THE CODE WITHOUT
      THE OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE AS DESCRIBED ABOVE SHALL
      BE
      VOID AND OF NO EFFECT.]

     

    

    
      
        
          
          

        

        
          F-1-1

          
            

          

        

        
          
          

        

      

    

    

    

     

    
      	
              Certificate
                No.

            	
              :

            	 
	 	 	 
	
              Cut-off  Date

            	
              :

            	 
	 	 	 
	
              First
                Distribution Date

            	
              :

            	 
	 	 	 
	
              Initial
                Certificate Balance of

              this
                Certificate

              (“Denomination”)

            	
               

               

              :

            	
               

               

              $

            
	 	 	 
	
              Initial
                Certificate Balances

              of
                all Certificates

              of
                this Class

            	
               

               

              :

            	
               

               

              $

            
	 	 	 
	
              CUSIP

            	
              :

            	 
	 	 	 
	
              Interest
                Rate

            	
              :

            	 
	 	 	 
	
              Maturity
                Date

            	
              :

            	 

    

    

     

    INDYMAC
      MBS, INC.

    IndyMac
      IMSC Mortgage Loan Trust 200_-__

    Mortgage
      Pass-Through Certificates, Series 200_-__

    

    Class
      P-[1][2]

     

    evidencing
      a percentage interest in the distributions allocable to the Certificates of
      the
      above-referenced Class with respect to a Trust Fund consisting primarily of
      a
      pool of conventional mortgage loans (the “Mortgage Loans”) secured by first
      liens on one- to four-family residential properties.

     

    Distributors
      in respect of this Certificate are distributable monthly as set forth
      herein.  Accordingly, the Certificate Balance at any time may be less
      than the Certificate Balance as set forth herein.  This Certificate
      does not evidence an obligation of, or an interest in, and is not guaranteed
      by
      the Depositor, the Seller, the Servicer or the Trustee referred to below or
      any
      of their respective affiliates.  Neither this Certificate nor the
      Mortgage Loans are guaranteed or insured by any governmental agency or
      instrumentality.

     

    This
      certifies that ________________ is the registered owner of the Percentage
      Interest evidenced by this Certificate (obtained by dividing the denomination
      of
      this Certificate by the aggregate of the denominations of all Certificates
      of
      the Class to which this Certificate belongs) in certain monthly distributions
      with respect to a Trust Fund consisting primarily of the Mortgage Loans
      deposited by IndyMac MBS, Inc. (the “Depositor”).  The Trust Fund was
      created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off
      Date specified above (the “Agreement”) among the Depositor, IndyMac Bank,
      F.S.B., as seller and servicer (the "Seller" or the "Servicer", as
      appropriate),  and Deutsche Bank National Trust Company, as trustee
      (the “Trustee”).  To the extent not defined herein, the capitalized
      terms used herein have the meanings assigned in the Agreement.  This
      Certificate is issued under and is subject to the terms, provisions and
      conditions of the Agreement, to which Agreement the Holder of this Certificate
      by virtue of the acceptance hereof assents and by which such Holder is
      bound.

     

    

    
      
        
          
          

        

        
          F-1-2

          
            

          

        

        
          
          

        

      

    

    

    The
      Certificates are limited in right of payment to certain collections and
      recoveries respecting the Mortgage Loans, all as more specifically set forth
      herein and in the Agreement.  As provided in the Agreement,
      withdrawals from the Distribution Account may be made from time to time for
      purposes other than distributions to Certificateholders, such purposes including
      reimbursement of advances made, or certain expenses incurred, with respect
      to
      the Mortgage Loans.

     

    This
      Certificate does not have a Certificate Balance or Pass-Through Rate and will
      be
      entitled to distributions only to the extent set forth in the
      Agreement.  In addition, any distribution of the proceeds of any
      remaining assets of the Trust will be made only upon presentment and surrender
      of this Certificate at the Corporate Trust Office or the office or agency
      maintained by the Trustee.

     

    No
      transfer of a Certificate of this Class shall be made unless such disposition
      is
      exempt from the registration requirements of the Securities Act of 1933, as
      amended (the “1933 Act”), and any applicable state securities laws or is made in
      accordance with the 1933 Act and such laws.  In the event of any such
      transfer, the Trustee shall require the transferor to execute a transferor
      certificate (in substantially the form attached to the Pooling and Servicing
      Agreement) and deliver either (i) an Investment Letter  or the Rule
      144A Letter, in either case substantially in the form attached to the Agreement,
      or (ii) a written Opinion of Counsel to the Trustee that such transfer may
      be
      made pursuant to an exemption, describing the applicable exemption and the
      basis
      therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which
      Opinion of Counsel shall be an expense of the transferor.

     

    [No
      transfer of a Certificate of this Class shall be made unless the Trustee shall
      have received either (i) a representation [letter] from the transferee of such
      Certificate, acceptable to and in form and substance satisfactory to the
      Trustee, to the effect that such transferee is not an employee benefit plan
      or
      other benefit plan subject to Section 406 of ERISA or Section 4975 of the Code,
      or a person acting on behalf of or investing plan assets of any such plan,
      which
      representation letter shall not be an expense of the Trustee or the Servicer,
      (ii) if the purchaser is an insurance company and the Certificate has been
      the
      subject of an ERISA-Qualifying Underwriting, a representation that the purchaser
      is an insurance company which is purchasing such Certificates with funds
      contained in an “insurance company general account” (as such term is defined in
      Section V(e) of Prohibited Transaction Class Exemption 95-60 (“PTCE 95-60”)) and
      that the purchase and holding of such Certificates are covered under Sections
      I
      and III of PTCE 95-60 or (iii) in the case of any such Certificate presented
      for
      registration in the name of an employee benefit plan subject to ERISA or Section
      4975 of the Code (or comparable provisions of any subsequent enactments), or
      a
      trustee of any such plan or any other person acting on behalf of any such plan,
      an Opinion of Counsel satisfactory to the Trustee and the Servicer to the effect
      that the purchase or holding of such Certificate will not result in a nonexempt
      prohibited transaction under ERISA or Section 4975 of the Code and will not
      subject the Trustee or the Servicer to any obligation in addition to those
      undertaken in the Agreement, which Opinion of Counsel shall not be an expense
      of
      the Trustee, the Servicer or the Trust Fund.  Notwithstanding anything
      else to the contrary herein, any purported transfer of a Certificate of this
      Class to or on behalf of an employee benefit plan subject to ERISA or to Section
      4975 of the Code without the opinion of counsel satisfactory to the Trustee
      as
      described above shall be void and of no effect.]

     

    Reference
      is hereby made to the further provisions of this Certificate set forth on the
      reverse hereof, which further provisions shall for all purposes have the same
      effect as if set forth at this place.

     

    This
      Certificate shall not be entitled to any benefit under the Agreement or be
      valid
      for any purpose unless manually countersigned by an authorized signatory of
      the
      Trustee.

     

    

    
      
        
          
          

        

        
          F-1-3

          
            

          

        

        
          
          

        

      

    

    

    *            *            *

     

    

    
      
        
          
          

        

        
          F-1-4

          
            

          

        

        
          
          

        

      

    

    

    IN
      WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
      executed.

     

    Dated:  _______,
      ____

     

    
      
        	 	
                DEUTSCHE
                  BANK NATIONAL TRUST

              	 
	 	COMPANY,	 
	 	 	
                as
                  Trustee

              	 
	 	 	 	 
	 	 	 	 
	
                 

              	
                By:
                  

              	 	 

      

       

      Countersigned:

       

      
         

        
          	
                  By:
                    

                	 	 
	 	 	
                  Authorized
                    Signatory of

                	 
	 	 	
                  DEUTSCHE
                    BANK NATIONAL TRUST

                	 
	 	 	
                  COMPANY,
                    as Trustee

                	 

        

         

      

    

    

    
      
        
          
          

        

        
          F-1-5

          
            

          

        

        
          
          

        

      

    

    

    INDYMAC
      MBS, INC.

    IndyMac
      IMSC Mortgage Loan Trust 200_-__

    Mortgage
      Pass-Through Certificates

     

    This
      Certificate is one of a duly authorized issue of Certificates designated as
      IndyMac MBS, Inc. Mortgage Pass-Through Certificates, of the Series specified
      on
      the face hereof (herein collectively called the “Certificates”), and
      representing a beneficial ownership interest in the Trust Fund created by the
      Agreement.

     

    The
      Certificateholder, by its acceptance of this Certificate, agrees that it will
      look solely to the funds on deposit in the Distribution Account for payment
      hereunder and that the Trustee is not liable to the Certificateholders for
      any
      amount payable under this Certificate or the Agreement or, except as expressly
      provided in the Agreement, subject to any liability under the
      Agreement.

     

    This
      Certificate does not purport to summarize the Agreement and reference is made
      to
      the Agreement for the interests, rights and limitations of rights, benefits,
      obligations and duties evidenced thereby, and the rights, duties and immunities
      of the Trustee.

     

    Pursuant
      to the terms of the Agreement, a distribution will be made on the 25th day
      of
      each month or, if such 25th day is not a Business Day, the Business Day
      immediately following (the “Distribution Date”), commencing on the first
      Distribution Date specified on the face hereof, to the Person in whose name
      this
      Certificate is registered at the close of business on the applicable Record
      Date
      in an amount equal to the product of the Percentage Interest evidenced by this
      Certificate and the amount required to be distributed to Holders of Certificates
      of the Class to which this Certificate belongs on such Distribution Date
      pursuant to the Agreement.  The Record Date applicable to each
      Distribution Date is the last Business Day of the month next preceding the
      month
      of such Distribution Date.

     

    Distributions
      on this Certificate shall be made by wire transfer of immediately available
      funds to the account of the Holder hereof at a bank or other entity having
      appropriate facilities therefor, if such Certificateholder shall have so
      notified the Trustee in writing at least five Business Days prior to the related
      Record Date and such Certificateholder shall satisfy the conditions to receive
      such form of payment set forth in the Agreement, or, if not, by check mailed
      by
      first class mail to the address of such Certificateholder appearing in the
      Certificate Register.  The final distribution on each Certificate will
      be made in like manner, but only upon presentment and surrender of such
      Certificate at the Corporate Trust Office or such other location specified
      in
      the notice to Certificateholders of such final distribution.

     

    The
      Agreement permits, with certain exceptions therein provided, the amendment
      thereof and the modification of the rights and obligations of the Trustee and
      the rights of the Certificateholders under the Agreement at any time by the
      Depositor, the Servicer and the Trustee with the consent of the Holders of
      Certificates affected by such amendment evidencing the requisite Percentage
      Interest, as provided in the Agreement.  Any such consent by the
      Holder of this Certificate shall be conclusive and binding on such Holder and
      upon all future Holders of this Certificate and of any Certificate issued upon
      the transfer hereof or in exchange therefor or in lieu hereof whether or not
      notation of such consent is made upon this Certificate.  The Agreement
      also permits the amendment thereof, in certain limited circumstances, without
      the consent of the Holders of any of the Certificates.

     

    As
      provided in the Agreement and subject to certain limitations therein set forth,
      the transfer of this Certificate is registrable in the Certificate Register
      of
      the Trustee upon surrender of this Certificate for registration of transfer
      at
      the Corporate Trust Office, accompanied by a written instrument of transfer
      in
      form satisfactory to the Trustee and the Certificate Registrar duly executed
      by
      the holder hereof or such holder’s attorney duly authorized in writing, and
      thereupon one or more new Certificates of the same Class in authorized
      denominations and evidencing the same aggregate Percentage Interest in the
      Trust
      Fund will be issued to the designated transferee or transferees.

     

    

    
      
        
          
          

        

        
          F-1-6

          
            

          

        

        
          
          

        

      

    

    

    The
      Certificates are issuable only as registered Certificates without coupons in
      denominations specified in the Agreement.  As provided in the
      Agreement and subject to certain limitations therein set forth, Certificates
      are
      exchangeable for new Certificates of the same Class in authorized denominations
      and evidencing the same aggregate Percentage Interest, as requested by the
      Holder surrendering the same.

     

    No
      service charge will be made for any such registration of transfer or exchange,
      but the Trustee may require payment of a sum sufficient to cover any tax or
      other governmental charge payable in connection therewith.

     

    The
      Depositor, the Servicer, the Seller and the Trustee and any agent of the
      Depositor or the Trustee may treat the Person in whose name this Certificate
      is
      registered as the owner hereof for all purposes, and neither the Depositor,
      the
      Trustee, nor any such agent shall be affected by any notice to the
      contrary.

     

    On
      any
      Distribution Date on which the aggregate Stated Principal Balance of the
      Mortgage Loans is less than 10% of the Cut-off Date Pool Principal Balance,
      the
      Servicer will have the option to repurchase, in whole, from the Trust Fund
      all
      remaining Mortgage Loans and all property acquired in respect of the Mortgage
      Loans at a purchase price determined as provided in the Agreement.  In
      the event that no such optional termination occurs, the related obligations
      and
      responsibilities created by the Agreement will terminate upon the later of
      the
      maturity or other liquidation (or any advance with respect thereto) of the
      last
      Mortgage Loan remaining in the Trust Fund or the disposition of all property
      in
      respect thereof and the distribution to Certificateholders of all amounts
      required to be distributed pursuant to the Agreement.  In no event,
      however, will the trust created by the Agreement continue beyond the expiration
      of 21 years from the death of the last survivor of the descendants living at
      the
      date of the Agreement of a certain person named in the Agreement.

     

    Any
      term
      used herein that is defined in the Agreement shall have the meaning assigned
      in
      the Agreement, and nothing herein shall be deemed inconsistent with that
      meaning.

     

    

    
      
        
          
          

        

        
          F-1-7

          
            

          

        

        
          
          

        

      

    

    

       

      ASSIGNMENT

       

      FOR
        VALUE
        RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s)
        unto

      
        

      

       

      
        

      

       

      
        

      

      (Please
        print or typewrite name and address including postal zip code of
        assignee)

       

      the
        Percentage Interest evidenced by the within Certificate and hereby authorizes
        the transfer of registration of such Percentage Interest to assignee on the
        Certificate Register of the Trust Fund.

       

      I
        (We)
        further direct the Trustee to issue a new Certificate of a like denomination
        and
        Class, to the above named assignee and deliver such Certificate to the following
        address:

       

      
        
          

        
                                                                                                                    

       

      Dated:

       

      
        	 	  	 
	 	Signature
                by or on behalf of
                assignor 

      

       

       

      DISTRIBUTION
        INSTRUCTIONS

       

      The
        assignee should include the following for purposes of distribution:

       

      Distributions
        shall be made, by wire transfer or otherwise, in immediately available funds
        to,
____________________________________________________________________________________________________

       _________________________________________________________________________________________________________________________________________________________________________________

      
         _________________________________________________________________________________________________________________________________________________________________________________

        for
          the
          account
          of _________________________________________________________________________________________________________________________________________________________________  
,

      

      account
        number                                                                                                                                                
, or, if mailed by  check, to
________________________________________________________________________________    
.

      Applicable
        statements should be mailed
        to ______________________________________________________________________________________________________________________________________________ 
,

      
         _______________________________________________________________________________________________________________________________________________________________________________

         ______________________________________________________________________________________________________________________________________________________________________________
          .
                                                                                                                            

      This
        information is provided
        by ________________________________________________________________________________________________________________________________________________,

      the
        assignee named above,
        or ________________________________________________________________________________________________________________________________________________________,

      as
        its
        agent.

       

       

      
        
          
          

        

        
          
          

          
            

          

        

        
          
          

        

      

    

    
 

    
      
        
          
          

        

        
          F-1-8

          
            

          

        

        
          
          

        

      

    

    

    STATE
      OF
      ___________________               )

    )  ss.:

    COUNTY
      OF
      __________________              )

     

    On
      the
  th day of
              ,
      20    before me, a notary public in and for said State,
      personally appeared
                                ,
      known to me who, being by me duly sworn, did depose and say that he executed
      the
      foregoing instrument.

     

    
      
         

        
          	 	  	 
	 	
                  Notary
                    Public

                	 

        

      

    

     

    [Notarial
      Seal]

     

    

     

    

    
      
        
          
          

        

        
          F-1-9

          
            

          

        

        
          
          

        

      

    

    

    Exhibit
      F-2

    

    [FORM
      OF
      CLASS L CERTIFICATE]

    

    THIS
      CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
      (THE “ACT”).  ANY RESALE OR TRANSFER OF THIS CERTIFICATE WITHOUT
      REGISTRATION THEREOF UNDER THE ACT MAY ONLY BE MADE IN A TRANSACTION EXEMPTED
      FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE
      PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.

     

    NEITHER
      THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS THE
      TRANSFEREE DELIVERS TO THE TRUSTEE EITHER A REPRESENTATION LETTER TO THE EFFECT
      THAT SUCH TRANSFEREE IS NOT, AND IS NOT INVESTING ON BEHALF OF OR WITH PLAN
      ASSETS OF, AN EMPLOYEE BENEFIT PLAN SUBJECT TO THE EMPLOYEE RETIREMENT INCOME
      SECURITY ACT OF 1974, AS AMENDED (“ERISA”), OR A PLAN OR ARRANGEMENT SUBJECT TO
      SECTION 4975 OF THE CODE, OR IF THE TRANSFEREE IS AN INSURANCE COMPANY AND
      THE
      CERTIFICATES HAVE BEEN THE SUBJECT OF AN ERISA QUALIFYING UNDERWRITING, A
      REPRESENTATION IN ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED
      TO
      HEREIN OR AN OPINION OF COUNSEL IN ACCORDANCE WITH THE PROVISIONS OF THE
      AGREEMENT REFERRED TO HEREIN.  NOTWITHSTANDING ANYTHING ELSE TO THE
      CONTRARY HEREIN, ANY PURPORTED TRANSFER OF THIS CERTIFICATE TO OR ON BEHALF
      OF
      AN EMPLOYEE BENEFIT PLAN OR ARRANGEMENT SUBJECT TO ERISA OR TO SECTION 4975
      OF
      THE CODE WITHOUT THE OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE AS DESCRIBED
      ABOVE SHALL BE VOID AND OF NO EFFECT.

     

    

    
      
        
          
          

        

        
          F-2-1

          
            

          

        

        
          
          

        

      

    

    

    

     

    
      	
              Certificate
                No.

            	
              :

            	 
	 	 	 
	
              Cut-off  Date

            	
              :

            	 
	 	 	 
	
              First
                Distribution Date

            	
              :

            	 
	 	 	 
	
              Percentage
                Interest

              of
                this Certificate

              (“Denomination”)

            	
               

               

              :

            	
               

               

              %

            
	 	 	 
	
              CUSIP

            	
              :

            	 
	 	 	 
	
              ISIN

            	
              :

            	 
	 	 	 
	
              Interest
                Rate

            	
              :

            	
              Not
                Applicable

            
	 	 	 
	
              Maturity
                Date

            	
              :

            	
              Not
                Applicable

            

    

    

     

    INDYMAC
      MBS, INC.

    IndyMac
      IMSC Mortgage Loan Trust 200_-__

    Mortgage
      Pass-Through Certificates, Series 200_-__

    

    Class
      L

     

    evidencing
      a percentage interest in the distributions allocable to the Certificates of
      the
      above-referenced Class with respect to a Trust Fund consisting primarily of
      a
      pool of 30-year conventional adjustable-rate mortgage loans (the “Mortgage
      Loans”) secured by first liens on one- to four-family residential
      properties.

     

    Distributions
      in respect of this Certificate are distributable monthly as set forth
      herein.  Accordingly, the Certificate Balance at any time may be less
      than the Certificate Balance as set forth herein.  This Certificate
      does not evidence an obligation of, or an interest in, and is not guaranteed
      by
      the Depositor, the Seller, the Servicer or the Trustee referred to below or
      any
      of their respective affiliates.  Neither this Certificate nor the
      Mortgage Loans are guaranteed or insured by any governmental agency or
      instrumentality.

     

    This
      certifies that ________________ is the registered owner of the Percentage
      Interest evidenced by this Certificate (obtained by dividing the denomination
      of
      this Certificate by the aggregate of the denominations of all Certificates
      of
      the Class to which this Certificate belongs) in certain monthly distributions
      with respect to a Trust Fund consisting primarily of the Mortgage Loans
      deposited by IndyMac MBS, Inc. (the “Depositor”).  The Trust Fund was
      created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off
      Date specified above (the “Agreement”) among the Depositor, IndyMac Bank,
      F.S.B., as seller and servicer (the “Seller” or the “Servicer”, as
      appropriate),  and Deutsche Bank National Trust Company, as trustee
      (the “Trustee”).  To the extent not defined herein, the capitalized
      terms used herein have the meanings assigned in the Agreement.  This
      Certificate is issued under and is subject to the terms, provisions and
      conditions of the Agreement, to which Agreement the Holder of this Certificate
      by virtue of the acceptance hereof assents and by which such Holder is
      bound.

     

    

    
      
        
          
          

        

        
          F-2-2

          
            

          

        

        
          
          

        

      

    

    

    The
      Certificates are limited in right of payment to certain collections and
      recoveries respecting the Mortgage Loans, all as more specifically set forth
      herein and in the Agreement.  As provided in the Agreement,
      withdrawals from the Collection Account and the Distribution Account may be
      made
      from time to time for purposes other than distributions to Certificateholders,
      such purposes including reimbursement of advances made, or certain expenses
      incurred, with respect to the Mortgage Loans.

     

    This
      Certificate does not have a Certificate Balance or Pass-Through Rate and will
      be
      entitled to distributions only to the extent set forth in the
      Agreement.  In addition, any distribution of the proceeds of any
      remaining assets of the Trust will be made only upon presentment and surrender
      of this Certificate at the Corporate Trust Office or the office or agency
      maintained by the Trustee.

     

    No
      transfer of a Certificate of this Class shall be made unless such disposition
      is
      exempt from the registration requirements of the Securities Act of 1933, as
      amended (the “1933 Act”), and any applicable state securities laws or is made in
      accordance with the 1933 Act and such laws.  In the event of any such
      transfer, the Trustee shall require the transferor to execute a transferor
      certificate (in substantially the form attached to the Pooling and Servicing
      Agreement) and deliver either (i) an Investment Letter  or the Rule
      144A Letter, in either case substantially in the form attached to the Agreement,
      or (ii) a written Opinion of Counsel to the Trustee that such transfer may
      be
      made pursuant to an exemption, describing the applicable exemption and the
      basis
      therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which
      Opinion of Counsel shall be an expense of the transferor.

     

    No
      transfer of a Certificate of this Class shall be made unless the Trustee shall
      have received either (i) a representation letter from the transferee of such
      Certificate, acceptable to and in form and substance satisfactory to the
      Trustee, to the effect that such transferee is not an employee benefit plan
      or
      arrangement subject to Section 406 of ERISA or Section 4975 of the Code, or
      a
      person investing on behalf of or with plan assets of any such plan, which
      representation letter shall not be an expense of the Trustee, or (ii) if the
      transferee is an insurance company and the Certificates have been the subject
      of
      an ERISA-Qualifying Underwriting, a representation that the purchaser is an
      insurance company which is purchasing such Certificates with funds contained
      in
      an “insurance company general account” (as such term is defined in Section V(e)
      of Prohibited Transaction Class Exemption 95-60 (“PTCE 95-60”)) and that the
      purchase and holding of such Certificates are covered under Sections I and
      III
      of PTCE 95-60, or (iii) in the case of a Certificate presented for registration
      in the name of an employee benefit plan or arrangement subject to ERISA, or
      a
      plan or arrangement subject to Section 4975 of the Code (or comparable
      provisions of any subsequent enactments), or a trustee of any such plan or
      arrangement or any other person acting on behalf of any such plan or arrangement
      or using such plan’s or arrangement’s assets, an Opinion of Counsel satisfactory
      to the Trustee and addressed to the Trustee and the Servicer, which Opinion
      of
      Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund,
      to the effect that the purchase and holding of such Certificate will not result
      in a non-exempt prohibited transaction under Section 406 of ERISA or Section
      4975 of the Code and will not subject the Trustee or the Servicer to any
      obligation in addition to those expressly undertaken in this Agreement or to
      any
      liability.  If no written representation or Opinion of Counsel as
      described above is delivered to the Trustee, the representation in (i) or (ii)
      above, as appropriate, shall be deemed to have been made to the Trustee by
      the
      Transferee’s acceptance of this Certificate and by a beneficial owner’s
      acceptance of its interest in such Certificate.  Notwithstanding
      anything else to the contrary herein, any purported transfer of a Certificate
      of
      this Class to or on behalf of an employee benefit plan or arrangement subject
      to
      ERISA or to the Code without the Opinion of Counsel satisfactory to the Trustee
      as described above shall be void and of no effect.

     

    Reference
      is hereby made to the further provisions of this Certificate set forth on the
      reverse hereof, which further provisions shall for all purposes have the same
      effect as if set forth at this place.

     

    

    
      
        
          
          

        

        
          F-2-3

          
            

          

        

        
          
          

        

      

    

    

    This
      Certificate shall not be entitled to any benefit under the Agreement or be
      valid
      for any purpose unless manually countersigned by an authorized signatory of
      the
      Trustee.

     

    

    
      
        
          
          

        

        
          F-2-4

          
            

          

        

        
          
          

        

      

    

    

    IN
      WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
      executed.

     

    Dated:  _______,
      ____

     

    
       

      
        	 	
                DEUTSCHE
                  BANK NATIONAL TRUST COMPANY,

              	 
	 	 	
                as
                  Trustee

              	 
	 	 	 	 
	 	 	 	 
	
                 

              	
                By:
                  

              	 	 

      

       

      Countersigned:

       

      
         

        
          	
                  By:
                    

                	 	 
	 	 	
                  Authorized
                    Signatory of

                	 
	 	 	
                  DEUTSCHE
                    BANK NATIONAL TRUST COMPANY,

                	 
	 	 	
                  as
                    Trustee

                	 

        

         

      

    

    

    

    
      
        
          
          

        

        
          F-2-5

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      G-1

     

    FORM
      OF
      INITIAL CERTIFICATION OF TRUSTEE

     

    [date]

     

    [Depositor]

     

    [Servicer]

     

    [Seller]

     

    _____________________

     

    _____________________

     

    
      	
               

            	
              Re:

            	
              Pooling
                and Servicing Agreement among IndyMac MBS, Inc.,
                as

            

    

    
      	
               

            	
              Depositor,
                IndyMac Bank, F.S.B., as Seller and
                Servicer,

            

    

    
      	
               

            	
              and
                Deutsche Bank National Trust Company, as
                Trustee,

            

    

    
      	
               

            	
              IndyMac
                IMSC Mortgage Loan Trust 2007-AR1

            

      	 	Mortgage
              Pass-Through Certificates,
              Series 200  -                                                      
              

    

     

    Gentlemen:

     

    In
      accordance with Section 2.02 of the above-captioned Pooling and Servicing
      Agreement (the “Pooling and Servicing Agreement”), the undersigned, as Trustee,
      hereby certifies that, as to each Mortgage Loan listed in the Mortgage Loan
      Schedule (other than any Mortgage Loan listed in the attached schedule), it
      has
      received:

     

    (i)  the
      original Mortgage Note, endorsed as provided in the following
      form:  “Pay to the order of ________, without recourse”;
      and

     

    (ii)  an
      executed assignment of the Mortgage (which may be included in a blanket
      assignment or assignments); provided, however, that it has received no
      assignment with respect to any Mortgage for which the Mortgaged Property is
      located in the Commonwealth of Puerto Rico.

     

    Based
      on
      its review and examination and only as to the foregoing documents, such
      documents appear regular on their face and to such Mortgage Loan.

     

    The
      Trustee has made no independent examination of any documents contained in each
      Mortgage File beyond the review specifically required in the Pooling and
      Servicing Agreement.  The Trustee makes no representations as
      to:  (i) the validity, legality, sufficiency, enforceability or
      genuineness of any of the documents contained in each Mortgage File of any
      of
      the Mortgage Loans identified on the Mortgage Loan Schedule, or (ii) the
      collectability, insurability, effectiveness or suitability of any such Mortgage
      Loan.

     

    Capitalized
      words and phrases used herein shall have the respective meanings assigned to
      them in the Pooling and Servicing Agreement.

     

    

    
      
        
          
          

        

        
          G-1-1

          
            

          

        

        
          
          

        

      

    

    

     

    
       

      
        	 	
                DEUTSCHE
                  BANK NATIONAL TRUST COMPANY,

              	 
	 	 	
                as
                  Trustee

              	 
	 	 	 	 
	 	 	 	 
	
                 

              	
                By:
                  

              	 	 
	 	 	 	 Name:	 
	 	 	 	 Title:	 

      

       

    

    

    
      
        
          
          

        

        
          G-1-2

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      G-2

     

    FORM
      OF
      DELAY DELIVERY CERTIFICATION (INITIAL MORTGAGE LOANS)

     

    [date]

     

    [Depositor]

     

    [Servicer]

     

    [Seller]

     

    _____________________

     

    _____________________

     

    
      	
               

            	
              Re:

            	
              Pooling
                and Servicing Agreement among IndyMac MBS, Inc.,
                as

            

    

    
      	
               

            	
              Depositor,
                IndyMac Bank, F.S.B., as Seller and
                Servicer,

            

    

    
      	
               

            	
              and
                Deutsche Bank National Trust Company, as
                Trustee,

            

    

    
      	
               

            	
              IndyMac
                IMSC Mortgage Loan Trust 2007-AR1

            

      	 	Mortgage
              Pass-Through Certificates, Series
              200  -                                 
              

    

    
    

    

    Gentlemen:

     

    Reference
      is made to the Initial Certification of Trustee relating to the above-referenced
      series, with the schedule of exceptions attached thereto (the “Schedule A”),
      delivered by the undersigned, as Trustee, on the Closing Date in accordance
      with
      Section 2.02 of the above-captioned Pooling and Servicing Agreement (the
“Pooling and Servicing Agreement”).  The undersigned hereby certifies
      that, as to each Delay Delivery Mortgage Loan listed on Schedule A attached
      hereto (other than any Mortgage Loan paid in full or listed on Schedule B
      attached hereto) it has received:

     

    
      	
               

            	
              (i)

            	
              the
                original Mortgage Note, endorsed by the Seller or the originator
                of such
                Mortgage Loan, without recourse in the following form:  “Pay to
                the order of _______________ without recourse”, with all intervening
                endorsements that show a complete chain of endorsement from the originator
                to the Seller, or, if the original Mortgage Note has been lost or
                destroyed and not replaced, an original lost note affidavit from
                the
                Seller, stating that the original Mortgage Note was lost or destroyed,
                together with a copy of the Mortgage
                Note;

            

    

     

    
      	
               

            	
              (ii)

            	
              the
                original recorded Mortgage;

            

    

     

    
      	
               

            	
              (iii)

            	
              an
                executed assignment of the Mortgage to “Deutsche Bank National Trust
                Company, as trustee under the Pooling and Servicing Agreement dated
                as of
                June 1, 2007, without recourse” (each such assignment, when duly and
                validly completed, to be in recordable form and sufficient to effect
                the
                assignment of and transfer to the assignee thereof, under the Mortgage
                to
                which such assignment relates);

            

    

     

    
      	
               

            	
              (iv)

            	
              the
                original recorded assignment or assignments of the Mortgage together
                with
                all interim recorded assignments of such
                Mortgage;

            

    

     

    

    
      
        
          
          

        

        
          G-2-1

          
            

          

        

        
          
          

        

      

    

    

    
      	
               

            	
              (v)

            	
              the
                original or copies of each assumption, modification, written assurance
                or
                substitution agreement, if any, with evidence of recording thereon
                if
                recordation thereof is permissible under applicable law;
                and

            

    

     

    
      	
               

            	
              (vi)

            	
              the
                original or duplicate original lender’s title policy and all riders, if
                any, thereto or, in the event such original title policy has not
                been
                received from the insurer, any one of an original title binder, an
                original preliminary title report or an original title commitment,
                or a
                copy thereof certified by the title company, with the original policy
                of
                title insurance to be delivered within one year of the Closing
                Date.

            

    

     

    In
      the
      event that in connection with any Mortgage Loan for which the Seller cannot
      deliver the original recorded Mortgage or all interim recorded assignments
      of
      the Mortgage satisfying the requirements of clause (ii), (iii) or (iv), as
      applicable, the Trustee has received, in lieu thereof, a true and complete
      copy
      of such Mortgage and/or such assignment or assignments of the Mortgage, as
      applicable, each certified by the Seller, the applicable title company, escrow
      agent or attorney, or the originator of such Mortgage Loan, as the case may
      be,
      to be a true and complete copy of the original Mortgage or assignment of
      Mortgage submitted for recording.

     

    Based
      on
      its review and examination and only as to the foregoing documents, (i) such
      documents appear regular on their face and related to such Mortgage Loan, and
      (ii) the information set forth in items (i), (iv), (vi) and (xv) (solely as
      of origination, not as of the Cut-off Date) of the definition of the “Mortgage
      Loan Schedule” in Section 1.01 of the Pooling and Servicing Agreement
      accurately reflects information set forth in the Mortgage File.

     

    The
      Trustee has made no independent examination of any documents contained in each
      Mortgage File beyond the review specifically required in the above-referenced
      Pooling and Servicing Agreement.  The Trustee makes no representations
      as to:  (i) the validity, legality, sufficiency, enforceability
      or genuineness of any of the documents contained in each Mortgage File of any
      of
      the Mortgage Loans identified on the [Mortgage Loan Schedule][Loan Number and
      Borrower Identification Mortgage Loan Schedule] or (ii) the collectability,
      insurability, effectiveness or suitability of any such Mortgage
      Loan.

     

    Capitalized
      words and phrases used herein shall have the respective meanings assigned to
      them in the Pooling and Servicing Agreement.

     

    
       

      
         

        
          	 	
                  DEUTSCHE
                    BANK NATIONAL TRUST COMPANY,

                	 
	 	 	
                  as
                    Trustee

                	 
	 	 	 	 
	 	 	 	 
	
                   

                	
                  By:
                    

                	 	 
	 	 	 	 Name:	 
	 	 	 	 Title:	 

        

         

      

    

    

    
      
        
          
          

        

        
          G-2-2

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      H

     

    FORM
      OF
      FINAL CERTIFICATION OF TRUSTEE

     

    [date]

     

    [Depositor]

     

    [Servicer]

     

    [Seller]

     

    _____________________

     

    _____________________

     

    
       

      
        	
                 

              	
                Re:

              	
                Pooling
                  and Servicing Agreement among IndyMac MBS, Inc.,
                  as

              

      

      
        	
                 

              	
                Depositor,
                  IndyMac Bank, F.S.B., as Seller and
                  Servicer,

              

      

      
        	
                 

              	
                and
                  Deutsche Bank National Trust Company, as
                  Trustee,

              

      

      
        	
                 

              	
                IndyMac
                  IMSC Mortgage Loan Trust 2007-AR1

              

        	 	Mortgage
                Pass-Through Certificates, Series
                200  -                                 
                

      

      
      

      

      Gentlemen:

    

     

    In
      accordance with Section 2.02 of the above-captioned Pooling and Servicing
      Agreement (the “Pooling and Servicing Agreement”), the undersigned, as Trustee,
      hereby certifies that as to each Mortgage Loan listed in the Mortgage Loan
      Schedule (other than any Mortgage Loan paid in full or listed on the attached
      Document Exception Report) it has received:

     

    (i)  The
      original Mortgage Note, endorsed in the form provided in Section 2.01(c) of
      the
      Pooling and Servicing Agreement, with all intervening endorsements showing
      a
      complete chain of endorsement from the originator to the Seller.

     

    (ii)  The
      original recorded Mortgage.

     

    (iii)  An
      executed assignment of the Mortgage in the form provided in Section 2.01(c)
      of
      the Pooling and Servicing Agreement; provided, however, that it has received
      no
      assignment with respect to any Mortgage for which the Mortgaged Property is
      located in the Commonwealth of Puerto Rico, or, if the Depositor has certified
      or the Trustee otherwise knows that the Mortgage has not been returned from
      the
      applicable recording office, a copy of the assignment of the Mortgage (excluding
      information to be provided by the recording office).

     

    (iv)  The
      original or duplicate original recorded assignment or assignments of the
      Mortgage showing a complete chain of assignment from the originator to the
      Seller.

     

    (v)  The
      original or duplicate original lender’s title policy and all riders thereto or,
      any one of an original title binder, an original preliminary title report or
      an
      original title commitment, or a copy thereof certified by the title
      company.

     

    Based
      on
      its review and examination and only as to the foregoing documents, (a) such
      documents appear regular on their face and related to such Mortgage Loan, and
      (b) the information set forth in items (i), (ii), (iii), (iv), (vi) and (xv)
      (solely as of origination, not as of the Cut-off Date) of the definition of
      the
“Mortgage Loan Schedule” in Section 1.01 of the Pooling and Servicing Agreement
      accurately reflects information set forth in the Mortgage File.

     

    

    
      
        
          
          

        

        
          H-1

          
            

          

        

        
          
          

        

      

    

    

    The
      Trustee has made no independent examination of any documents contained in each
      Mortgage File beyond the review specifically required in the Pooling and
      Servicing Agreement.  The Trustee makes no representations as
      to:  (i) the validity, legality, sufficiency, enforceability or
      genuineness of any of the documents contained in each Mortgage File of any
      of
      the Mortgage Loans identified on the Mortgage Loan Schedule, or (ii) the
      collectability, insurability, effectiveness or suitability of any such Mortgage
      Loan.  Notwithstanding anything herein to the contrary, the Trustee
      has made no determination and makes no representations as to whether (i) any
      endorsement is sufficient to transfer all right, title and interest of the
      party
      so endorsing, as noteholder or assignee thereof, in and to that Mortgage Note
      or
      (ii) any assignment is in recordable form or sufficient to effect the assignment
      of and transfer to the assignee thereof, under the Mortgage to which the
      assignment relates.

     

    Capitalized
      words and phrases used herein shall have the respective meanings assigned to
      them in the Pooling and Servicing Agreement.

     

    
      
         

        
           

          
            	 	
                    DEUTSCHE
                      BANK NATIONAL TRUST COMPANY,

                  	 
	 	 	
                    as
                      Trustee

                  	 
	 	 	 	 
	 	 	 	 
	
                     

                  	
                    By:
                      

                  	 	 
	 	 	 	 Name:	 
	 	 	 	 Title:	 

          

           

        

      

    

    

    
      
        
          
          

        

        
          H-2

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      I

     

    TRANSFER
      AFFIDAVIT

     

    IndyMac
      MBS, Inc.

    IndyMac
      IMSC Mortgage Loan Trust 200_-_

    Mortgage
      Pass-Through Certificates

    Series
      200_-_

     

    
      	
              STATE
                OF CALIFORNIA

            	
              )

            
	 	
              :  ss.:

            
	
              COUNTY
                OF _____________

            	
              )

            
	 	 

    

    The
      undersigned, being first duly sworn, deposes and says as follows:

     

    1.           The
      undersigned is an officer of
                   ,
      the proposed Transferee of an Ownership Interest in a Class A-R Certificate
      (the
“Certificate”) issued pursuant to the Pooling and Servicing Agreement, (the
“Agreement”), relating to the above-referenced Series, by and among IndyMac MBS,
      Inc., as depositor (the “Depositor”), IndyMac Bank, F.S.B., as seller and
      servicer and Deutsche Bank National Trust Company, as
      Trustee.  Capitalized terms used, but not defined herein or in Exhibit
      1 hereto, shall have the meanings ascribed to such terms in the
      Agreement.  The Transferee has authorized the undersigned to make this
      affidavit on behalf of the Transferee.

     

    2.           The
      Transferee is, as of the date hereof, and will be, as of the date of the
      Transfer, a Permitted Transferee.  The Transferee is acquiring its
      Ownership Interest in the Certificate for its own account.

     

    3.           The
      Transferee has been advised of, and understands that (i) a tax will be imposed
      on Transfers of the Certificate to Persons that are not Permitted Transferees;
      (ii) such tax will be imposed on the transferor, or, if such Transfer is through
      an agent (which includes a broker, nominee or middleman) for a Person that
      is
      not a Permitted Transferee, on the agent; and (iii) the Person otherwise liable
      for the tax shall be relieved of liability for the tax if the subsequent
      Transferee furnished to such Person an affidavit that such subsequent Transferee
      is a Permitted Transferee and, at the time of Transfer, such Person does not
      have actual knowledge that the affidavit is false.

     

    4.           The
      Transferee has been advised of, and understands that a tax will be imposed
      on a
“pass-through entity” holding the Certificate if at any time during the taxable
      year of the pass-through entity a Person that is not a Permitted Transferee
      is
      the record holder of an interest in such entity.  The Transferee
      understands that such tax will not be imposed for any period with respect to
      which the record holder furnishes to the pass-through entity an affidavit that
      such record holder is a Permitted Transferee and the pass-through entity does
      not have actual knowledge that such affidavit is false.  (For this
      purpose, a “pass-through entity” includes a regulated investment company, a real
      estate investment trust or common trust fund, a partnership, trust or estate,
      and certain cooperatives and, except as may be provided in Treasury Regulations,
      persons holding interests in pass-through entities as a nominee for another
      Person.)

     

    5.           The
      Transferee has reviewed the provisions of Section 5.02(c) of the Agreement
      (attached hereto as Exhibit 2 and incorporated herein by reference) and
      understands the legal consequences of the acquisition of an Ownership Interest
      in the Certificate including, without limitation, the restrictions on subsequent
      Transfers and the provisions regarding voiding the Transfer and mandatory
      sales.  The Transferee expressly agrees to be bound by and to abide by
      the provisions of Section 5.02(c) of the Agreement and the restrictions noted
      on
      the face of the Certificate.  The Transferee understands and agrees
      that any breach of any of the representations included herein shall render
      the
      Transfer to the Transferee contemplated hereby null and void.

     

    

    
      
        
          
          

        

        
          I-1

          
            

          

        

        
          
          

        

      

    

    

    6.           The
      Transferee agrees to require a Transfer Affidavit from any Person to whom the
      Transferee attempts to Transfer its Ownership Interest in the Certificate,
      and
      in connection with any Transfer by a Person for whom the Transferee is acting
      as
      nominee, trustee or agent, and the Transferee will not Transfer its Ownership
      Interest or cause any Ownership Interest to be Transferred to any Person that
      the Transferee knows is not a Permitted Transferee.  In connection
      with any such Transfer by the Transferee, the Transferee agrees to deliver
      to
      the Trustee a certificate substantially in the form set forth as Exhibit J
      to
      the Agreement (a “Transferor Certificate”) to the effect that such Transferee
      has no actual knowledge that the Person to which the Transfer is to be made
      is
      not a Permitted Transferee.

     

    7.           The
      Transferee does not have the intention to impede the assessment or collection
      of
      any tax legally required to be paid with respect to the
      Certificate.

     

    8.           The
      Transferee’s taxpayer identification number is
           .

     

    9.           The
      Transferee is a U.S. Person as defined in Code Section 7701(a)(30).

     

    10.           The
      Transferee is aware that the Certificate may be a “noneconomic residual
      interest” within the meaning of proposed Treasury regulations promulgated
      pursuant to the Code and that the transferor of a noneconomic residual interest
      will remain liable for any taxes due with respect to the income on such residual
      interest, unless no significant purpose of the transfer was to impede the
      assessment or collection of tax.

     

    11.           The
      Transferee is not a foreign permanent establishment or fixed base (within the
      meaning of an applicable income tax treaty) of a U.S. taxpayer.

     

    12.           The
      Transferee will not transfer the Certificates, directly or indirectly, to a
      foreign permanent establishment or fixed base (within the meaning of an
      applicable income tax treaty) of the Transferee or another U.S.
      taxpayer.

     

    13.           The
      Transferee will not cause income from the Certificates to be attributable to
      a
      foreign permanent establishment or fixed base (within the meaning of an
      applicable income tax treaty) of the Transferee or another U.S.
      taxpayer.

     

    14.           Either:

     

    (a)
      (i)
      At the time of the transfer, and at the close of each of the Transferee’s two
      fiscal years preceding the Transferee’s fiscal year of transfer, the
      Transferee’s gross assets for financial reporting purposes exceed $100 million
      and its net assets for financial reporting purposes exceed $10 million. For
      purposes of the preceding sentence, the gross assets and net assets of a
      Transferee do not include any obligation of any Related Person, as defined
      below, or any other asset if a principal purpose for holding or acquiring the
      other asset is to permit the Transferee to satisfy the conditions of this
      paragraph 15(a); (ii) The Transferee is an Eligible Corporation, as defined
      below, and hereby agrees that any subsequent transfer of the interest will
      be to
      another Eligible Corporation in a transaction that satisfies this Transfer
      Affidavit, including this paragraph 15(a); and (iii) The Transferee has not
      given the Transferor any reason to know that the Transferee will not honor
      the
      restrictions on subsequent transfers of the residual interest or that the
      Transferee cannot or will not pay any taxes associated with the residual
      interest; or

     

    

    
      
        
          
          

        

        
          I-2

          
            

          

        

        
          
          

        

      

    

    

    (b)(i)
      The Transferee is a United States Person; (ii) The present value of the
      anticipated tax liabilities associated with holding the residual interest does
      not exceed the sum of: (A) The present value of any consideration given to
      the
      Transferee to acquire the interest; (B) The present value of the expected future
      distributions on the interest; and (C) The present value of the anticipated
      tax
      savings associated with holding the interest as any REMIC generates losses;
      and
      (iii) For purposes of calculating the aforementioned present values: (A) The
      transferee has assumed that it pays tax at a rate equal to the highest rate
      of
      tax specified in Code Section 11(b)(1) (unless the Transferee has been subject
      to the alternative minimum tax under Code Section 55 in the preceding two years
      and will compute its taxable income in the current taxable year using the
      alternative minimum tax rate, in which case the Transferee can assume that
      it
      pays tax at the rate specified in Code Section 55(b)(1)(B) provided the
      Transferee states in this Transfer Affidavit that it is using such alternate
      rate and that has been subject to the alternative minimum tax under Code Section
      55 in the preceding two years and will compute its taxable income in the current
      taxable year using the alternative minimum tax rate):and (B) The Transferee
      uses
      a discount rate equal to the Federal short-term rate prescribed by section
      1274(d) for the month of the transfer and the compounding period used by the
      Transferee.

     

    The
      term
“Eligible Corporation” means any domestic C corporation (as defined in section
      1361(a)(2) of the Code) other than a corporation which is exempt from, or is
      not
      subject to, tax under section 11 of the Code, an entity described in section
      851(a) or 856(a) of the Code, a REMIC; or an organization to which part I,
      subchapter T, chapter 1, subtitle A of the Code applies.  The Term
“Related Person” means any person that bears a relationship to the Transferee
      enumerated in section 267(b) or 707(b)(1) of the Code, using "20 percent"
      instead of "50 percent" where it appears under the provisions; or is under
      common control (within the meaning of section 52(a) and (b) of the Code) with
      the Transferee.

     

    15.           Either
      (i) the Transferee is not an employee benefit plan that is subject to ERISA
      or a
      plan that is subject to Section 4975 of the Code, and the Transferee is not
      acting on behalf of or with plan assets of such a plan; or (ii) the Transferee
      is an insurance company that is investing funds contained in an “insurance
      company general account” (as such term is defined in Section V(e) of Prohibited
      Transaction Class Exemption 95-60 (“PTCE 95-60”) and the purchase and holding of
      the Class A-R Certificate satisfy the requirements for exemptive relief under
      Sections I and III of PTCE 95-60.

     

    *           *           *

    

    
      
        
          
          

        

        
          I-3

          
            

          

        

        
          
          

        

      

    

    

    IN
      WITNESS WHEREOF, the Transferee has caused this instrument to be executed on
      its
      behalf, pursuant to authority of its Board of Directors, by its duly authorized
      officer and its corporate seal to be hereunto affixed, duly attested, this
           day of
                 ,
      20 .

     

    
       

      
        
          	 	 	 

        

        
          	 	
                  Print
                    Name of Transferee

                	 
	 	 	 	 
	
                   

                	
                  By:
                    

                	 	 
	 	
                   Name:

                	 
	 	
                   Title:

                	 
	 	 	 	 
	 [Corporate
                  Seal]	 	 	 
	 	 	 
	 ATTEST:	 	 	 
	 	 	 	 
	 	  	 
	 	 	
                   

                	 
	[Assistant]
                  Secretary	 	 	 
	 	 	 	 

        

         

      

    

     

    Personally
      appeared before me the above-named
            ,
      known or proved to me to be the same person who executed the foregoing
      instrument and to be the
                    
      of the Transferee, and acknowledged that he executed the same as his free act
      and deed and the free act and deed of the Transferee.

     

    Subscribed
      and sworn before me this      day of
        ,
      20 .

     

    
       

      
        
          	
                   

                	
                   

                	 
	 	
                  NOTARY
                    PUBLIC

                	 
	 	 	 
	 	 	 
	 	My
                  Commission expires the __ day of___________________,	 
	 	 20__	 

        

      

    

     

    

    
      
        
          
          

        

        
          I-4

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      1

    to
      EXHIBIT I

     

    Certain
      Definitions

     

    “Ownership
      Interest”:  As to any Certificate, any ownership interest in such
      Certificate, including any interest in such Certificate as the Holder thereof
      and any other interest therein, whether direct or indirect, legal or
      beneficial.

     

    “Permitted
      Transferee”:  Any Person other than (i) the United States, any State
      or political subdivision thereof, or any agency or instrumentality of any of
      the
      foregoing, (ii) a foreign government, International Organization or any agency
      or instrumentality of either of the foregoing, (iii) an organization (except
      certain farmers’ cooperatives described in Code Section 521) that is exempt from
      tax imposed by Chapter 1 of the Code (including the tax imposed by Code Section
      511 on unrelated business taxable income) on any excess inclusions (as defined
      in Code Section 860E(c)(1)) with respect to any Restricted Certificate, (iv)
      a
      rural electric and telephone cooperatives described in Code Section
      1381(a)(2)(c), (v) an “electing large partnership” as defined in Code Section
      775 of (vi) a Person that is not a U.S. Person, and (vii) any other Person
      so
      designated by the Depositor based upon an Opinion of Counsel that the Transfer
      of an Ownership Interest in a Residual Certificate to such Person may cause
      any
      REMIC to fail to qualify as a REMIC at any time that certain Certificates are
      Outstanding.  The terms “United States,” “State” and “International
      Organization” shall have the meanings set forth in Code Section 7701 or
      successor provisions.  A corporation will not be treated as an
      instrumentality of the United States or of any State or political subdivision
      thereof if all of its activities are subject to tax, and, with the exception
      of
      the FHLMC, a majority of its board of directors is not selected by such
      governmental unit.

     

    “Person”:  Any
      individual, corporation, partnership, joint venture, limited liability company,
      bank, joint stock company, trust (including any beneficiary thereof),
      unincorporated organization or government or any agency or political subdivision
      thereof.

     

    “Transfer”:  Any
      direct or indirect transfer or sale of any Ownership Interest in a Certificate,
      including the acquisition of a Certificate by the Depositor.

     

    “Transferee”:  Any
      Person who is acquiring by Transfer any Ownership Interest in a
      Certificate.

     

    

    
      
        
          
          

        

        
          I-5

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      2

    to
      EXHIBIT I

     

    Section
      5.02(c) of the Agreement

     

    (c)  Each
      Person who has or who acquires any Ownership Interest in a Residual Certificate
      shall be deemed by the acceptance or acquisition of such Ownership Interest
      to
      have agreed to be bound by the following provisions, and the rights of each
      Person acquiring any Ownership Interest in a Residual Certificate are expressly
      subject to the following provisions:

     

    (i)  Each
      Person holding or acquiring any Ownership Interest in a Residual Certificate
      shall be a Permitted Transferee and shall promptly notify the Trustee of any
      change or impending change in its status as a Permitted Transferee.

     

    (ii)  No
      Ownership Interest in a Residual Certificate may be registered on the Closing
      Date or thereafter transferred, and the Trustee shall not register the Transfer
      of any Residual Certificate unless, in addition to the certificates required
      to
      be delivered to the Trustee under subparagraph (b) above, the Trustee shall
      have
      been furnished with an affidavit (a “Transfer Affidavit”) of the initial owner
      or the proposed transferee in the form attached hereto as Exhibit
      I.

     

    (iii)  Each
      Person holding or acquiring any Ownership Interest in a Residual Certificate
      shall agree (A) to obtain a Transfer Affidavit from any other Person to whom
      such Person attempts to Transfer its Ownership Interest in a Residual
      Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such
      Person is acting as nominee, trustee or agent in connection with any Transfer
      of
      a Residual Certificate and (C) not to Transfer its Ownership Interest in a
      Residual Certificate or to cause the Transfer of an Ownership Interest in a
      Residual Certificate to any other Person if it has actual knowledge that such
      Person is not a Permitted Transferee.

     

    (iv)  Any
      attempted or purported Transfer of any Ownership Interest in a Residual
      Certificate in violation of the provisions of this Section 5.02(c) shall be
      absolutely null and void and shall vest no rights in the purported
      Transferee.  If any purported transferee shall become a Holder of a
      Residual Certificate in violation of the provisions of this Section 5.02(c),
      then the last preceding Permitted Transferee shall be restored to all rights
      as
      Holder thereof retroactive to the date of registration of Transfer of such
      Residual Certificate.  The Trustee shall be under no liability to any
      Person for any registration of Transfer of a Residual Certificate that is in
      fact not permitted by Section 5.02(b) and this Section 5.02(c) or for making
      any
      payments due on such Certificate to the Holder thereof or taking any other
      action with respect to such Holder under the provisions of this Agreement so
      long as the Transfer was registered after receipt of the Transfer Affidavit,
      Transferor Certificate and either the Rule 144A Letter or the Investment
      Letter.  The Trustee shall be entitled but not obligated to recover
      from any Holder of a Residual Certificate that was in fact not a Permitted
      Transferee at the time it became a Holder or, at such subsequent time as it
      became other than a Permitted Transferee, all payments made on such Residual
      Certificate at and after either such time.  Any such payments so
      recovered by the Trustee shall be paid and delivered by the Trustee to the
      last
      preceding Permitted Transferee of such Certificate.

     

    

    
      
        
          
          

        

        
          I-6

          
            

          

        

        
          
          

        

      

    

    

    (v)  The
      Depositor shall use its best efforts to make available, upon receipt of written
      request from the Trustee, all information necessary to compute any tax imposed
      under Section 860E(e) of the Code as a result of a Transfer of an Ownership
      Interest in a Residual Certificate to any Holder who is not a Permitted
      Transferee.

     

    

    
      
        
          
          

        

        
          I-7

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      J

     

    FORM
      OF
      TRANSFEROR CERTIFICATE

     

    __________,
      200__

     

    IndyMac
      MBS, Inc.

    155
      North
      Lake Avenue, 7th Floor

    Pasadena,
      CA  91101

    Attention:  Secondary
      Marketing, Transaction Management

     

    DB
      Services Tennessee

    648
      Grassmere Park Road

    Nashville,
      TN 37211-3658

    Attention:
      Transfer Unit, [Series 200 -]

     

    
      	
               

            	
              Re:

            	
              IndyMac
                MBS, Inc.

            

    

    
      	
               

            	
              IndyMac
                IMSC Mortgage Loan Trust 2007-AR1

            

    

    
      	
               

            	
              Mortgage
                Pass-Through Certificates, Series 200 -,
                Class

            

    

     

    Ladies
      and Gentlemen:

     

    In
      connection with our disposition of the above Certificates we certify that (a)
      we
      understand that the Certificates have not been registered under the Securities
      Act of 1933, as amended (the “Act”), and are being disposed by us in a
      transaction that is exempt from the registration requirements of the Act, (b)
      we
      have not offered or sold any Certificates to, or solicited offers to buy any
      Certificates from, any person, or otherwise approached or negotiated with any
      person with respect thereto, in a manner that would be deemed, or taken any
      other action which would result in, a violation of Section 5 of the Act and
      (c)
      to the extent we are disposing of a Class A-R Certificate, we have no knowledge
      the Transferee is not a Permitted Transferee.

     

    
       

      
        
          	
                	Very
                  truly yours,	 
	 	 	 
	 	 	 
	 	Print
                  Name of Transferor	 
	 	 	 	 
	
                   

                	
                  By:

                	 	 
	 	 	
                  Authorized
                    Officer

                	 
	 	 	 

        

         

      

    

    

    
      
        
          
          

        

        
          J-1

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      K

     

    FORM
      OF
      INVESTMENT LETTER (NON-RULE 144A)

     

    __________,
      200__

     

    IndyMac
      MBS, Inc.

    155
      North
      Lake Avenue, 7th Floor

    Pasadena,
      CA  91101

    Attention:  Secondary
      Marketing, Transaction Management

     

    DB
      Services Tennessee

    648
      Grassmere Park Road

    Nashville,
      TN 37211-3658

    Attention:
      Transfer Unit, [Series 200 -]

     

    
      	
               

            	
              Re:

            	
              IndyMac
                MBS, Inc.

            

    

    
      	
               

            	
              IndyMac
                IMSC Mortgage Loan Trust 2007-AR1

            

    

    
      	
               

            	
              Mortgage
                Pass-Through Certificates, Series 200 -,
                Class

            

    

     

    Ladies
      and Gentlemen:

     

    In
      connection with our acquisition of the above-referenced Certificates we certify
      that (a) we understand that the Certificates are not being registered under
      the
      Securities Act of 1933, as amended (the “Act”), or any state securities laws and
      are being transferred to us in a transaction that is exempt from the
      registration requirements of the Act and any such laws, (b) we are an
“accredited investor,” as defined in Regulation D under the Act, and have such
      knowledge and experience in financial and business matters that we are capable
      of evaluating the merits and risks of investments in the Certificates, (c)
      we
      have had the opportunity to ask questions of and receive answers from the
      Depositor concerning the purchase of the Certificates and all matters relating
      thereto or any additional information deemed necessary to our decision to
      purchase the Certificates, (d) either (i) we are not an employee benefit plan
      that is subject to the Employee Retirement Income Security Act of 1974, as
      amended, or a plan or arrangement that is subject to Section 4975 of the
      Internal Revenue Code of 1986, as amended, nor are we acting on behalf of any
      such plan or arrangement or using the assets of any such plan or arrangement
      to
      effect such acquisition or (ii) [in the case of a Certificate that has been
      the
      subject of an ERISA-Qualifying Underwriting] we are an insurance company which
      is purchasing such Certificates with funds contained in an “insurance company
      general account” (as such term is defined in Section V(e) of Prohibited
      Transaction Class Exemption 95-60 (“PTCE 95-60”)) and the purchase and holding
      of such Certificates are covered under Sections I and III of PTCE 95-60, (e)
      we
      are acquiring the Certificates for investment for our own account and not with
      a
      view to any distribution of such Certificates (but without prejudice to our
      right at all times to sell or otherwise dispose of the Certificates in
      accordance with clause (g) below), (f) we have not offered or sold any
      Certificates to, or solicited offers to buy any Certificates from, any person,
      or otherwise approached or negotiated with any person with respect thereto,
      or
      taken any other action which would result in a violation of Section 5 of the
      Act, (g) we will not sell, transfer or otherwise dispose of any Certificates
      unless (1) such sale, transfer or other disposition is made pursuant to an
      effective registration statement under the Act or is exempt from such
      registration requirements, and if requested, we will at our expense provide
      an
      opinion of counsel satisfactory to the addressees of this Certificate that
      such
      sale, transfer or other disposition may be made pursuant to an exemption from
      the Act, (2) the purchaser or transferee of such Certificate has executed and
      delivered to you a certificate to

     

    

    
      
        
          
          

        

        
          K-1

          
            

          

        

        
          
          

        

      

    

    

    substantially
      the same effect as this certificate, and (3) the purchaser or transferee has
      otherwise complied with any conditions for transfer set forth in the Pooling
      and
      Servicing Agreement and (h) if we are a corporation purchasing the Certificates
      in the State of California, we have a net worth of at least $14,000,000
      according to our most recent audited financial statements.

     

    
      
        	 	 Very
                truly yours,	 
	 	 	 
	 	 	 
	 	Name
                of Transferee	 
	 	 	 	 
	
                 

              	
                By:
                  

              	 	 
	 	 	Authorized
                Officer	 
	 	 	 	 

      

       

    

    

    
      
        
          
          

        

        
          K-2

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      L

     

    FORM
      OF
      RULE 144A LETTER

     

    ____________,
      200__

     

    IndyMac
      MBS, Inc.

    155
      North
      Lake Avenue, 7th Floor

    Pasadena,
      CA  91101

    Attention:  Secondary
      Marketing, Transaction Management

     

    DB
      Services Tennessee

    648
      Grassmere Park Road

    Nashville,
      TN 37211-3658

    Attention:
      Transfer Unit, [Series 200 -]

     

    
      	
               

            	
              Re:

            	
              IndyMac
                MBS, Inc.

            

    

    
      	
               

            	
              IndyMac
                IMSC Mortgage Loan Trust 2007-AR1

            

    

    
      	
               

            	
              Mortgage
                Pass-Through Certificates, Series 200 -,
                Class

            

    

     

    Ladies
      and Gentlemen:

     

    In
      connection with our acquisition of the above-referenced Certificates we certify
      that (a) we understand that the Certificates are not being registered under
      the
      Securities Act of 1933, as amended (the “Act”), or any state securities laws and
      are being transferred to us in a transaction that is exempt from the
      registration requirements of the Act and any such laws, (b) we have such
      knowledge and experience in financial and business matters that we are capable
      of evaluating the merits and risks of investments in the Certificates, (c)
      we
      have had the opportunity to ask questions of and receive answers from the
      Depositor concerning the purchase of the Certificates and all matters relating
      thereto or any additional information deemed necessary to our decision to
      purchase the Certificates, (d) either (i) we are not an employee benefit plan
      that is subject to the Employee Retirement Income Security Act of 1974, as
      amended, or a plan or arrangement that is subject to Section 4975 of the
      Internal Revenue Code of 1986, as amended, nor are we acting on behalf of any
      such plan or arrangement or using the assets of any such plan or arrangement
      to
      effect such acquisition, or (ii) [in the case of a Certificate that has been
      the
      subject of an ERISA-Qualifying Underwriting] we are purchasing the Certificates
      with funds contained in an “insurance company general account” (as defined in
      Section V(e) of Prohibited Transaction Class Exemption 95-60 (“PTCE 95-60”)) and
      our purchase and holding of the Certificates satisfy the requirements for
      exemptive relief under Sections I and III of PTCE 95-60, (e) we have not, nor
      has anyone acting on our behalf offered, transferred, pledged, sold or otherwise
      disposed of the Certificates, any interest in the Certificates or any other
      similar security to, or solicited any offer to buy or accept a transfer, pledge
      or other disposition of the Certificates, any interest in the Certificates
      or
      any other similar security from, or otherwise approached or negotiated with
      respect to the Certificates, any interest in the Certificates or any other
      similar security with, any person in any manner, or made any general
      solicitation by means of general advertising or in any other manner, or taken
      any other action, that would constitute a distribution of the Certificates
      under
      the Act or that would render the disposition of the Certificates a violation
      of
      Section 5 of the Act or require registration pursuant thereto, nor will act,
      nor
      has authorized or will authorize any person to act, in such manner with respect
      to the Certificates, (f) we are a “qualified institutional buyer” as that term
      is defined in Rule 144A under the Act (“Rule 144A”) and have completed either of
      the forms of certification to that effect attached hereto as Annex 1 or Annex
      2,
      (g) we

     

    

    
      
        
          
          

        

        
          L-1

          
            

          

        

        
          
          

        

      

    

    

    are
      aware
      that the sale to us is being made in reliance on Rule 144A, (h) we are acquiring
      the Certificates for our own account or for resale pursuant to Rule 144A and
      further, understand that such Certificates may be resold, pledged or transferred
      only (A) to a person reasonably believed to be a qualified institutional buyer
      that purchases for its own account or for the account of a qualified
      institutional buyer to whom notice is given that the resale, pledge or transfer
      is being made in reliance on Rule 144A, or (B) pursuant to another exemption
      from registration under the Act and (i) if we are a corporation purchasing
      the
      Certificates in the State of California, we have a net worth of at least
      $14,000,000 according to our most recent audited financial
      statements.

     

    
      
        	 	 Very
                truly yours,	 
	 	 	 
	 	 	 
	 	Name
                of Transferee	 
	 	 	 	 
	
                 

              	
                By:
                  

              	 	 
	 	 	Authorized
                Officer	 
	 	 	 	 

      

       

    

    

    
      
        
          
          

        

        
          L-2

          
            

          

        

        
          
          

        

      

    

    

    ANNEX
      1
      TO EXHIBIT L

     

    QUALIFIED
      INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A

     

    [For
      Transferees Other Than Registered Investment Companies]

     

    The
      undersigned (the “Buyer”) hereby certifies as follows to the parties listed in
      the Rule 144A Transferee Certificate to which this certification relates with
      respect to the Certificates described therein:

     

    1.  As
      indicated below, the undersigned is the President, Chief Financial Officer,
      Senior Vice President or other executive officer of the Buyer.

     

    2.  In
      connection with purchases by the Buyer, the Buyer is a “qualified institutional
      buyer” as that term is defined in Rule 144A under the Securities Act of 1933, as
      amended (“Rule 144A”) because (i) the Buyer owned and/or invested on a
      discretionary basis
      $            1 in
      securities (except for the excluded securities referred to below) as of the
      end
      of the Buyer’s most recent fiscal year (such amount being calculated in
      accordance with Rule 144A and (ii) the Buyer satisfies the criteria in the
      category marked below.

     

    ___           Corporation,
      etc.  The Buyer is a corporation (other than a bank, savings and
      loan association or similar institution), Massachusetts or similar business
      trust, partnership, or charitable organization described in Section 501(c)(3)
      of
      the Internal Revenue Code of 1986, as amended.

     

    ___           Bank.  The
      Buyer (a) is a national bank or banking institution organized under the laws
      of
      any State, territory or the District of Columbia, the business of which is
      substantially confined to banking and is supervised by the State or territorial
      banking commission or similar official or is a foreign bank or equivalent
      institution, and (b) has an audited net worth of at least $25,000,000 as
      demonstrated in its latest annual financial statements, a copy of which is
      attached hereto.

     

    ___           Savings
      and Loan.  The Buyer (a) is a savings and loan association,
      building and loan association, cooperative bank, homestead association or
      similar institution, which is supervised and examined by a State or Federal
      authority having supervision over any such institutions or is a foreign savings
      and loan association or equivalent institution and (b) has an audited net worth
      of at least $25,000,000 as demonstrated in its latest annual financial
      statements, a copy of which is attached hereto.

     

    ___           Broker-dealer.  The
      Buyer is a dealer registered pursuant to Section 15 of the Securities Exchange
      Act of 1934.

     

    ___           Insurance
      Company.  The Buyer is an insurance company whose primary and
      predominant business activity is the writing of insurance or the reinsuring
      of
      risks underwritten by insurance companies and which is subject to supervision
      by
      the insurance commissioner or a similar official or agency of a State, territory
      or the District of Columbia.

     

    
      
        

      

    

    
      	
              1

            	
              Buyer
                must own and/or invest on a discretionary basis at least $100,000,000
                in
                securities unless Buyer is a dealer, and, in that case, Buyer must
                own
                and/or invest on a discretionary basis at least $10,000,000 in
                securities.

            

    

     

    
 

    
      
        
          
          

        

        
          L-3

          
            

          

        

        
          
          

        

      

    

    

    ___           State
      or Local Plan.  The Buyer is a plan established and maintained by
      a State, its political subdivisions, or any agency or instrumentality of the
      State or its political subdivisions, for the benefit of its
      employees.

     

    ___           ERISA
      Plan.  The Buyer is an employee benefit plan within the meaning of
      Title I of the Employee Retirement Income Security Act of 1974.

     

    ___           Investment
      Advisor.  The Buyer is an investment advisor registered under the
      Investment Advisors Act of 1940.

     

    ___           Small
      Business Investment Company.  Buyer is a small business investment
      company licensed by the U.S. Small Business Administration under Section 301(c)
      or (d) of the Small Business Investment Act of 1958.

     

    ___           Business
      Development Company.  Buyer is a business development company as
      defined in Section 202(a)(22) of the Investment Advisors Act of
      1940.

     

    3.  The
      term “securities” as used herein does not include (i) securities of issuers that
      are affiliated with the Buyer, (ii) securities that are part of an unsold
      allotment to or subscription by the Buyer, if the Buyer is a dealer, (iii)
      securities issued or guaranteed by the U.S. or any instrumentality thereof,
      (iv)
      bank deposit notes and certificates of deposit, (v) loan participations, (vi)
      repurchase agreements, (vii) securities owned but subject to a repurchase
      agreement and (viii) currency, interest rate and commodity swaps.

     

    4.  For
      purposes of determining the aggregate amount of securities owned and/or invested
      on a discretionary basis by the Buyer, the Buyer used the cost of such
      securities to the Buyer and did not include any of the securities referred
      to in
      the preceding paragraph, except (i) where the Buyer reports its securities
      holdings in its financial statements on the basis of their market value, and
      (ii) no current information with respect to the cost of those securities has
      been published.  If clause (ii) in the preceding sentence applies, the
      securities may be valued at market.  Further, in determining such
      aggregate amount, the Buyer may have included securities owned by subsidiaries
      of the Buyer, but only if such subsidiaries are consolidated with the Buyer
      in
      its financial statements prepared in accordance with generally accepted
      accounting principles and if the investments of such subsidiaries are managed
      under the Buyer’s direction.  However, such securities were not
      included if the Buyer is a majority-owned, consolidated subsidiary of another
      enterprise and the Buyer is not itself a reporting company under the Securities
      Exchange Act of 1934, as amended.

     

    5.  The
      Buyer acknowledges that it is familiar with Rule 144A and understands that
      the
      seller to it and other parties related to the Certificates are relying and
      will
      continue to rely on the statements made herein because one or more sales to
      the
      Buyer may be in reliance on Rule 144A.

     

    6.  Until
      the date of purchase of the Rule 144A Securities, the Buyer will notify each
      of
      the parties to which this certification is made of any changes in the
      information and conclusions herein.  Until such notice is given, the
      Buyer’s purchase of the Certificates will constitute a reaffirmation of this
      certification as of the date of such purchase.  In addition, if the
      Buyer is a bank or savings and loan is provided above, the Buyer agrees that
      it
      will furnish to such parties updated annual financial statements promptly after
      they become available.

     

    

    
      
        
          
          

        

        
          L-4

          
            

          

        

        
          
          

        

      

    

    

    
       

      
        	
              	 	 
	 	
                Print
                  Name of Buyer

              	 
	 	 	 
	 	 	 	 
	
                 

              	
                By:
                  

              	 	 
	 	 	
                Name: 

              	 
	 	 	
                Title: 

              	 
	 	 	 	 
	 	  	 
	 	 Date:	 	 
	 

      

       

    

     

    

    
      
        
          
          

        

        
          L-5

          
            

          

        

        
          
          

        

      

    

    

    ANNEX
      2
      TO EXHIBIT L

     

    QUALIFIED
      INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A

     

    [For
      Transferees That are Registered Investment Companies]

     

    The
      undersigned (the “Buyer”) hereby certifies as follows to the parties listed in
      the Rule 144A Transferee Certificate to which this certification relates with
      respect to the Certificates described therein:

     

    1.  As
      indicated below, the undersigned is the President, Chief Financial Officer
      or
      Senior Vice President of the Buyer or, if the Buyer is a “qualified
      institutional buyer” as that term is defined in Rule 144A under the Securities
      Act of 1933, as amended (“Rule 144A”) because Buyer is part of a Family of
      Investment Companies (as defined below), is such an officer of the
      Adviser.

     

    2.  In
      connection with purchases by Buyer, the Buyer is a “qualified institutional
      buyer” as defined in SEC Rule 144A because (i) the Buyer is an investment
      company registered under the Investment Company Act of 1940, as amended and
      (ii)
      as marked below, the Buyer alone, or the Buyer’s Family of Investment Companies,
      owned at least $100,000,000 in securities (other than the excluded securities
      referred to below) as of the end of the Buyer’s most recent fiscal
      year.  For purposes of determining the amount of securities owned by
      the Buyer or the Buyer’s Family of Investment Companies, the cost of such
      securities was used, except (i) where the Buyer or the Buyer’s Family of
      Investment Companies reports its securities holdings in its financial statements
      on the basis of their market value, and (ii) no current information with respect
      to the cost of those securities has been published.  If clause (ii) in
      the preceding sentence applies, the securities may be valued at
      market.

     

    ___           The
      Buyer owned
      $             in
      securities (other than the excluded securities referred to below) as of the
      end
      of the Buyer’s most recent fiscal year (such amount being calculated in
      accordance with Rule 144A).

     

    ___           The
      Buyer is part of a Family of Investment Companies which owned in the aggregate
      $          in securities
      (other than the excluded securities referred to below) as of the end of the
      Buyer’s most recent fiscal year (such amount being calculated in accordance with
      Rule 144A).

     

    3.  The
      term “Family of Investment Companies” as used herein means two or more
      registered investment companies (or series thereof) that have the same
      investment adviser or investment advisers that are affiliated (by virtue of
      being majority owned subsidiaries of the same parent or because one investment
      adviser is a majority owned subsidiary of the other).

     

    4.  The
      term “securities” as used herein does not include (i) securities of
      issuers that are affiliated with the Buyer or are part of the Buyer’s Family of
      Investment Companies, (ii) securities issued or guaranteed by the U.S. or any
      instrumentality thereof, (iii) bank deposit notes and certificates of deposit,
      (iv) loan participations, (v) repurchase agreements, (vi) securities owned
      but
      subject to a repurchase agreement and (vii) currency, interest rate and
      commodity swaps.

     

    5.  The
      Buyer is familiar with Rule 144A and understands that the parties listed in
      the
      Rule 144A Transferee Certificate to which this certification relates are relying
      and will continue to rely on the statements made herein because one or more
      sales to the Buyer will be in reliance on Rule 144A.  In addition, the
      Buyer will only purchase for the Buyer’s own account.

     

    

    
      
        
          
          

        

        
          L-6

          
            

          

        

        
          
          

        

      

    

    

    6.  Until
      the date of purchase of the Certificates, the undersigned will notify the
      parties listed in the Rule 144A Transferee Certificate to which this
      certification relates of any changes in the information and conclusions
      herein.  Until such notice is given, the Buyer’s purchase of the
      Certificates will constitute a reaffirmation of this certification by the
      undersigned as of the date of such purchase.

     

    
      
         

        
          	
                	 	 
	 	
                  Print
                    Name of Buyer

                	 
	 	 	 
	 	 	 	 
	
                   

                	
                  By:
                    

                	 	 
	 	 	
                  Name: 

                	 
	 	 	
                  Title: 

                	 
	 	 	 	 
	 	  	 
	 	 Date:	 	 
	 

        

         

      

    

     

    

    
      
        
          
          

        

        
          L-7

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      M

     

    REQUEST
      FOR RELEASE

    (for
      Trustee)

     

    IndyMac
      MBS, Inc.

    IndyMac
      IMSC Mortgage Loan Trust 200_-_

    Mortgage
      Pass-Through Certificates

    Series
      200_-_

     

    
      	
              Loan
                Information

            
	 	 	 
	 	
              Name
                of Mortgagor:

            	 
	 	 	 
	 	
              Servicer

              Loan
                No.:

            	 	 
	 	 	 
	
              Trustee

            
	 	 	 
	 	
              Name:

            	 	 
	 	 	 
	 	
              Address:

            	 	 
	 	 	 
	 	 	 	 
	 
	
              Trustee

              Mortgage
                File No.:

            
	 	 	 

    

    The
      undersigned Servicer hereby acknowledges that it has received from Deutsche
      Bank
      National Trust Company, as Trustee for the Holders of Mortgage Pass-Through
      Certificates, of the above-referenced Series, the documents referred to below
      (the “Documents”).  All capitalized terms not otherwise defined in
      this Request for Release shall have the meanings given them in the Pooling
      and
      Servicing Agreement (the “Pooling and Servicing Agreement”) relating to the
      above-referenced Series among the Trustee, IndyMac Bank, F.S.B., as Seller
      and
      Servicer and IndyMac MBS, Inc., as Depositor.

     

    
      	
              ( )

            	
              Mortgage
                Note dated
                           ,
                20 , in the original principal sum of
                $         , made by
                                 .
                payable to, or endorsed to the order of, the
                Trustee.

            

    

     

    
      	
              ( )

            	
              Mortgage
                recorded on
                                
                as instrument no.
                                    
                in the County Recorder’s Office of the County of
                                  ,
                State of
                              
                in book/reel/docket
                                
                of official records at page/image
                               .

            

    

     

    
      	
              ( )

            	
              Deed
                of Trust recorded on
                                  
                as instrument no.
                                
                in the County Recorder’s Office of the County of
                               ,
                State of
                              
                in book/reel/docket
                              
                of official records at page/image
                               .

            

    

     

    
      	
              ( )

            	
              Assignment
                of Mortgage or Deed of Trust to the Trustee, recorded on
                                
                as instrument no.
                            
                in the County Recorder’s Office of the County of
                         , State of
                                
                in book/reel/docket
                              
                of official records at page/image
                              .

            

    

     

    

    
      
        
          
          

        

        
          M-1

          
            

          

        

        
          
          

        

      

    

    

    
      	
              ( )

            	
              Other
                documents, including any amendments, assignments or other assumptions
                of
                the Mortgage Note or Mortgage.

            

    

     

    
      	
               

            	
              ( )

            

    

     

    
      	
               

            	
              ( )

            

    

     

    
      	
               

            	
              ( )

            

    

     

    
      	
               

            	
              ( )

            

    

     

    The
      undersigned Servicer hereby acknowledges and agrees as follows:

     

    (1)           The
      Servicer shall hold and retain possession of the Documents in trust for the
      benefit of the Trustee, solely for the purposes provided in the
      Agreement.

     

    (2)           The
      Servicer shall not cause or knowingly permit the Documents to become subject
      to,
      or encumbered by, any claim, liens, security interest, charges, writs of
      attachment or other impositions nor shall the Servicer assert or seek to assert
      any claims or rights of setoff to or against the Documents or any proceeds
      thereof.

     

    (3)           The
      Servicer shall return each and every Document previously requested from the
      Mortgage File to the Trustee when the need therefor no longer exists, unless
      the
      Mortgage Loan relating to the Documents has been liquidated and the proceeds
      thereof have been remitted to the Certificate Account and except as expressly
      provided in the Agreement.

     

    (4)           The
      Documents and any proceeds thereof, including any proceeds of proceeds, coming
      into the possession or control of the Servicer shall at all times be earmarked
      for the account of the Trustee, and the Servicer shall keep the Documents and
      any proceeds separate and distinct from all other property in the Servicer’s
      possession, custody or control.

     

    
      	 	
              INDYMAC
                BANK, F.S.B.

            	 
	 	 	 	 
	
               

            	
              By:
                

            	/s/ 	 
	 	 	Name:	 
	 	 	Title:	 
	 	 	 	 

    

     

    Date:
                      ,
      20

     

    

    
      
        
          
          

        

        
          M-2

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      N

     

    REQUEST
      FOR RELEASE OF DOCUMENTS

     

    
      	
              To:

            	
              Deutsche
                Bank National Trust Company

            

    

    
      	
              Attn:

            	
              Mortgage
                Custody Services

            

    

    
      	
              Re:

            	
              The
                Pooling and Servicing Agreement dated June 1, 2007 among
                IndyMac

            

    

    
      	
               

            	
              Bank,
                F.S.B. as Servicer, Inc, IndyMac MBS, Inc. and
                Deutsche

            

      	 	Bank
              National Trust Company, as
              Trustee                                                             
              

    

     

    Ladies
      and Gentlemen:

     

    In
      connection with the administration of the Mortgage Loans held by you as Trustee
      for IndyMac MBS, Inc., we request the release of the Mortgage Loan File for
      the
      Mortgage Loan(s) described below, for the reason indicated.

     

    FT
      Account
      #:                                Pool
      #:

     

    Mortgagor’s
      Name, Address and Zip Code:

     

    Mortgage
      Loan Number:

     

    Reason
      for Requesting Documents (check one)

     

    
      	
              _______1.

            	
              Mortgage
                Loan paid in full (IndyMac hereby certifies that all amounts have
                been
                received.)

            
	 	 
	
              _______2.

            	
              Mortgage
                Loan Liquidated (IndyMac hereby certifies that all proceeds of
                foreclosure, insurance, or other liquidation have been finally
                received.)

            
	 	 
	
              _______3.

            	
              Mortgage
                Loan in Foreclosure.

            
	 	 
	
              _______4.

            	
              Other
                (explain): ____________________________________

            
	 	 

    

    If
      item 1
      or 2 above is checked, and if all or part of the Mortgage File was previously
      released to us, please release to us our previous receipt on file with you,
      as
      well as an additional documents in your possession relating to the
      above-specified Mortgage Loan.  If item 3 or 4 is checked, upon return
      of all of the above documents to you as Trustee, please acknowledge your receipt
      by signing in the space indicated below, and returning this form.

     

    

    
      
        
          
          

        

        
          N-1

          
            

          

        

        
          
          

        

      

    

    

    INDYMAC
      BANK, F.S.B.

    888
      East
      Walnut Street

    Pasadena,
      CA  91101-7211

     

    By:________________________

    Name:______________________

    Title:____________________

    Date:______________________

     

    TRUSTEE
      CONSENT TO RELEASE AND

    ACKNOWLEDGEMENT
      OF RECEIPT

     

    By:________________________

    Name:______________________

    Title:____________________

    Date:______________________

     

    

    
      
        
          
          

        

        
          N-2

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      O-1

     

    FORM
      OF
      CERTIFICATION TO BE PROVIDED BY THE DEPOSITOR WITH FORM 10-K

     

    Re:          IndyMac
      MBS, Inc.

    IndyMac
      IMSC Mortgage Loan Trust 200_-  , Series 200_- __

    

    I,
      [identify the certifying individual], certify that:

     

    1.           I
      have reviewed this report on Form 10-K and all reports on Form 10-D required
      to
      be filed in respect of the period covered by this report on Form 10-K of IndyMac
      IMSC Mortgage Loan Trust 200 -   , Series
      200 -    (the “Exchange Act periodic reports”);

     

    2.           Based
      on my knowledge, the Exchange Act periodic reports, taken as a whole, does
      not
      contain any untrue statement of a material fact or omit to state a material
      fact
      necessary to make the statements made, in light of the circumstances under
      which
      such statements were made, not misleading with respect to the period covered
      by
      this report;

     

    3.           Based
      on my knowledge, the distribution, servicing and other information required
      to
      be provided under Form 10-D for the period covered by this report is included
      in
      the Exchange Act periodic reports;

     

    4.           Based
      on my knowledge and the servicer compliance statement required in this report
      under Item 1123 of Regulation AB and except as disclosed in the Exchange Act
      periodic reports, the servicer has fulfilled its obligations under the servicing
      agreement in all material respects; and

     

    5.           All
      of the reports on assessment of compliance with servicing criteria for
      asset-backed securities and their related attestation reports on assessment
      of
      compliance with servicing criteria for asset-backed securities required to
      be
      included in this report in accordance with Item 1122 of Regulation AB and
      Exchange Act Rules 13a-18 and 15d-18 have been included as an exhibit to this
      report, except as otherwise disclosed in this report.  Any material
      instances of noncompliance described in such reports have been disclosed in
      this
      report on Form 10-K.

     

    In
      giving
      the certifications above, I have reasonably relied on information provided
      to me
      by the following unaffiliated parties: Deutsche Bank National Trust
      Company.

     

    Date:
      __________________

     

    
      	 	 
	 	
              [Signature]

              [Title]

            

    

    

     

    

    
      
        
          
          

        

        
          O-1-1

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      O-2

     

    

     

    TRUSTEE’S
      OFFICER’S CERTIFICATE

     

    

    I,
      ____________________, a duly elected and acting officer of Deutsche Bank
      National Trust Company (the “Trustee”) hereby certify as follows:

     

    Reference
      is hereby made to the Pooling and Servicing Agreement dated as of June 1, 2007
      (the “Pooling Agreement”) by and among IndyMac Bank, F.S.B., as seller and
      servicer, IndyMac MBS, Inc., as depositor and Deutsche Bank National Trust
      Company, as trustee, pursuant to which was created the IndyMac IMSC Mortgage
      Loan Trust 200 -   , Series 200 -   
(the “Trust”). Capitalized terms used herein but not defined shall have the
      meanings assigned to them in the Pooling Agreement.

     

    1.           I
      am an authorized officer of the Trustee and I have reviewed this annual report
      on Form 10-K and all reports on Form 10-D required to be filed in respect of
      the
      period covered by this report on Form 10-K of IndyMac IMSC Mortgage Loan Trust
      200 -   , Series 200 -    (the “Exchange
      Act Periodic Reports”);

     

    2.           For
      purposes of this certificate, “Relevant Information” means the information in
      the report on assessment of the Trustee’s compliance with the servicing criteria
      set forth in Item 1122(d) of Reg AB (the “Servicing Assessment”), the registered
      public accounting firm’s attestation provided in accordance with Rules 13a-18
      and 15d-18 under the Exchange Act and Section 1122(b) of Reg AB ( the
“Attestation Report”) applicable to the Trustee and the Monthly Statements
      (excluding information provided, or based on information provided, by the
      Servicer or any servicer) and those items in Exhibit S attached to the Pooling
      and Servicing Agreement which indicate the 4.06 statement or the Trustee as
      the
      responsible party during the Relevant Year. Based on my knowledge, the Relevant
      Information, taken as a whole, does not contain any untrue statement of a
      material fact or omit to state a material fact necessary to make the statements
      made, in light of the circumstances under which such statements were made,
      not
      misleading with respect to the period covered by this annual report;
      and

     

    3.           Based
      on my knowledge, the distribution information required to be provided by the
      Trustee under the Pooling and Servicing Agreement is included in the Monthly
      Statements.

     

    4.           I
      am responsible for reviewing the activities performed by the Trustee, as
      servicer under the Pooling Agreement during the Relevant Year. Based upon the
      review required by the Pooling Agreement and except as disclosed in the
      Servicing Assessment or Attestation Report, to the best of my knowledge, the
      Trustee has fulfilled its obligations under the Pooling Agreement throughout
      the
      Relevant Year. Relevant Year shall mean 200__.

     

    DATED
      as
      of _____________, 200____.

     

    
      	 	 	 	 
	
               

            	
              By:
                

            	 	 
	 	 Name:	 
	 	  Title:	 
	 	 	 	 

    

     

    

    
      
        
          
          

        

        
          O-2-1

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      P

     

    [RESERVED]

     

    

    
      
        
          
          

        

        
          P-1

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      Q

     

    FORM
      10-D, FORM 8-K AND FORM 10-K

    REPORTING
      RESPONSIBILITY

    

    As
      to
      each item described below, the entity indicated as the Responsible Party shall
      be primarily responsible for reporting the information to the Trustee pursuant
      to Section 11.04.  If the Trustee is indicated below as to any item,
      then the Trustee is primarily responsible for obtaining that
      information.

    

    Under
      Item 1 of Form 10-D: a) items marked “4.06 statement” are required to be
      included in the periodic Distribution Date statement under Section 4.06,
      provided by the Trustee based on information received from the Servicer; and
      b)
      items marked “Form 10-D report” are required to be in the Form 10-D report but
      not the 4.06 statement, provided by the party indicated.  Information
      under all other Items of Form 10-D is to be included in the Form 10-D
      report.

    

    
      	
              Form

            	
              Item

            	
              Description

            	
              Responsible
                Party

            
	
              10-D

            	
              Must
                be filed within 15 days of the distribution date for the mortgage-backed
                securities.

            
	
              1

            	
              Distribution
                and Pool Performance Information

            	 
	
              Item
                1121(a) – Distribution and Pool Performance
                Information

            	 
	
              (1)
                Any applicable record dates, accrual dates, determination dates for
                calculating distributions and actual distribution dates for the
                distribution period.

            	
              4.06
                statement

            
	
              (2)
                Cash flows received and the sources thereof for distributions, fees
                and
                expenses.

            	
              4.06
                statement

            
	
              (3)
                Calculated amounts and distribution of the flow of funds for the
                period
                itemized by type and priority of payment, including:

            	
              4.06
                statement

            
	
              (i)
                Fees or expenses accrued and
                paid, with an identification of the general purpose of such fees
                and the
                party receiving such fees or expenses.

            	
              4.06
                statement

            
	
              (ii)
                Payments accrued or paid
                with respect to enhancement or other support identified in Item 1114
                of
                Regulation AB (such as insurance premiums or other enhancement maintenance
                fees), with an identification of the general purpose of such payments
                and
                the party receiving such payments.

            	
              4.06
                statement

            
	
              (iii)
                Principal, interest and
                other distributions accrued and paid on the mortgage-backed securities
                by
                type and by class or series and any principal or interest shortfalls
                or
                carryovers.

            	
              4.06
                statement

            
	
              (iv)
                The amount of excess cash
                flow or excess spread and the disposition of excess cash
                flow.

            	
              4.06
                statement

            
	
              (4)
                Beginning and ending principal balances of the mortgage-backed
                securities.

            	
              4.06
                statement

            
	
              (5)
                Interest rates applicable to the pool assets and the mortgage-backed
                securities, as applicable.

            	
              4.06
                statement

            
	
              (6)
                Beginning and ending balances of transaction accounts, such as reserve
                accounts, and material account activity during the period.

            	
              4.06
                statement

            

    

    

    
      
        
          
          

        

        
          Q-1

          
            

          

        

        
          
          

        

      

    

    

    

    
      	 	 	
              (7)
                Any amounts drawn on any credit enhancement or other support identified
                in
                Item 1114 of Regulation AB, as applicable, and the amount of coverage
                remaining under any such enhancement, if known and
                applicable.

            	
              4.06
                statement

            
	
              (8)
                Number and amount of pool assets at the beginning and ending of each
                period, and updated pool composition information, such as weighted
                average
                coupon, weighted average life, weighted average remaining term, pool
                factors and prepayment amounts.

            	
              4.06
                statement

               

              Updated
                pool composition information fields to be as specified by Depositor
                from
                time to time

            
	
              (9)
                Delinquency and loss information for the period.

               

              In
                addition, describe any material changes to the information specified
                in
                Item 1100(b)(5) of Regulation AB regarding the pool
                assets.

            	
              4.06
                statement.

               

               

              Form
                10-D report: Servicer

            
	
              (10)
                Information on the amount, terms and general purpose of any advances
                made
                or reimbursed during the period, including the general use of funds
                advanced and the general source of funds for
                reimbursements.

            	
              4.06
                statement

            
	
              (11)
                Any material modifications, extensions or waivers to pool asset terms,
                fees, penalties or payments during the distribution period or that
                have
                cumulatively become material over time.

            	
              Form
                10-D report: Servicer

            
	
              (12)
                Material breaches of pool asset representations or warranties or
                transaction covenants.

            	
              Form
                10-D report: Trustee (based on actual knowledge to the extent not
                notified
                by the Servicer or the Depositor)and Depositor (to the extent of
                actual
                knowledge)

            
	
              (13)
                Information on ratio, coverage or other tests used for determining
                any
                early amortization, liquidation or other performance trigger and
                whether
                the trigger was met.

            	
              4.06
                statement

            
	
              (14)
                Information regarding any new issuance of mortgage-backed securities
                backed by the same asset pool,

               

              [information
                regarding] any pool asset changes (other than in connection with
                a pool
                asset converting into cash in accordance with its terms), such as
                additions or removals in connection with a pre-funding or revolving
                period
                and pool asset substitutions and repurchases (and purchase rates,
                if
                applicable), and cash flows available for future purchases, such
                as the
                balances of any pre-funding or revolving accounts, if
                applicable.

               

              Disclose
                any material changes in the solicitation, credit-granting, underwriting,
                origination, acquisition or pool selection criteria or procedures,
                as
                applicable, used to originate, acquire or select the new pool
                assets.

            	
              Form
                10-D report: Depositor

               

               

              Form
                10-D report: Servicer

               

               

               

               

               

              Form
                10-D report: Servicer

            

    

    

    
      
        
          
          

        

        
          Q-2

          
            

          

        

        
          
          

        

      

    

    

    

    
      	 	 	
              Item
                1121(b) – Pre-Funding or Revolving Period Information

               

              Updated
                pool information as required under Item 1121(b).

            	
              N/A

            
	
              2

            	
              Legal
                Proceedings

            	 
	
              Item
                1117 – Legal proceedings pending against the following entities, or their
                respective property, that is material to Certificateholders, including
                proceedings known to be contemplated by governmental
                authorities:

               

              Sponsor
                (Seller)

               

              Depositor

               

              Trustee

               

              Issuing
                entity

               

              Servicer,
                affiliated Servicer, other Servicer servicing 20% or more of pool
                assets
                at time of report, other material servicers

               

              Originator
                of 20% or more of pool assets as of the Cut-off Date

               

              Custodian

            	
               

               

               

              Seller

               

              Depositor

               

              Trustee

               

              Depositor

               

               

              Servicer

               

              Seller

               

              Trustee

            
	
              3

            	
              Sales
                of Securities and Use of Proceeds

            	 
	
              Information
                from Item 2(a) of Part II of Form 10-Q:

               

              With
                respect to any sale of securities by the sponsor, depositor or issuing
                entity, that are backed by the same asset pool or are otherwise issued
                by
                the issuing entity, whether or not registered, provide the sales
                and use
                of proceeds information in Item 701 of Regulation S-K.  Pricing
                information can be omitted if securities were not
                registered.

            	
               

               

               

              Depositor

            

    

    

    
      
        
          
          

        

        
          Q-3

          
            

          

        

        
          
          

        

      

    

    

    

    
      	 	
              4

            	
              Defaults
                Upon Senior Securities

            	 
	
              Information
                from Item 3 of Part II of Form 10-Q:

               

              Report
                the occurrence of any Event of Default (after expiration of any grace
                period and provision of any required notice)

            	
               

               

               

              Trustee

            
	
              5

            	
              Submission
                of Matters to a Vote of Security Holders

            	 
	
              Information
                from Item 4 of Part II of Form 10-Q

            	
              Party
                submitting the matter to Holders for vote

            
	
              6

            	
              Significant
                Obligors of Pool Assets

            	 
	
              Item
                1112(b) –Significant Obligor Financial
                Information*

            	
              N/A

            
	
              *This
                information need only be reported on the Form 10-D for the distribution
                period in which updated information is required pursuant to the
                Item.

            	 
	
              7

            	
              Significant
                Enhancement Provider Information

            	 
	
              Item
                1114(b)(2) – Credit Enhancement Provider Financial
                Information*

               

              Determining
                applicable disclosure threshold

               

               

              Obtaining
                required financial information or effecting incorporation by
                reference

            	
              Depositor

               

               

               

               

            
	
              Item
                1115(b) – Derivative Counterparty Financial Information*

               

              Determining
                current maximum probable exposure

               

              Determining
                current significance percentage

               

               

              Obtaining
                required financial information or effecting incorporation by
                reference

            	
              Depositor

               

               

               

               

               

            
	
              *This
                information need only be reported on the Form 10-D for the distribution
                period in which updated information is required pursuant to the
                Items.

            	 
	
              8

            	
              Other
                Information

            	 
	
              Disclose
                any information required to be reported on Form 8-K during the period
                covered by the Form 10-D but not reported

            	
              The
                Responsible Party for the applicable Form 8-K item as indicated
                below

            
	
              9

            	
              Exhibits

            	 
	
              Distribution
                report

            	
              Trustee

            
	
              Exhibits
                required by Item 601 of Regulation S-K, such as material
                agreements

            	
              Depositor

            

    

    

    
      
        
          
          

        

        
          Q-4

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              8-K

            	
              Must
                be filed within four business days of an event reportable on Form
                8-K.

            
	
              1.01

            	
              Entry
                into a Material Definitive Agreement

            	 
	
              Disclosure
                is required regarding entry into or amendment of any definitive agreement
                that is material to the securitization, even if depositor is not
                a
                party.

               

              Examples:
                servicing agreement, custodial agreement.

               

              Note:
                disclosure not required as to definitive agreements that are fully
                disclosed in the prospectus

            	
              Servicer;
                or any of the following that is a party to the agreement if Servicer
                is
                not: Trustee, Sponsor, Depositor

            
	
              1.02

            	
              Termination
                of a Material Definitive Agreement

            	 
	
              Disclosure
                is required regarding termination of  any definitive agreement
                that is material to the securitization (other than expiration in
                accordance with its terms), even if depositor is not a party.

               

              Examples:
                servicing agreement, custodial agreement.

               

            	
              Servicer;
                or any of the following that is a party to the agreement if Servicer
                is
                not: Trustee, Sponsor, Depositor

            
	
              1.03

            	
              Bankruptcy
                or Receivership

            	 
	
              Disclosure
                is required regarding the bankruptcy or receivership, if known to
                the
                Depositor, with respect to any of the following:

               

              Sponsor
                (Seller), Depositor, Servicer, affiliated Servicer, other Servicer
                servicing 20% or more of pool assets at time of report, other material
                servicers, Trustee, significant obligor, credit enhancer (10% or
                more),
                derivatives counterparty

            	
              Depositor

            
	
              2.04

            	
              Triggering
                Events that Accelerate or Increase a Direct Financial Obligation
                or an
                Obligation under an Off-Balance Sheet Arrangement

            	 
	
              Includes
                an early amortization, performance trigger or other event, including
                event
                of default, that would materially alter the payment priority/distribution
                of cash flows/amortization schedule.

               

              Disclosure
                will be made of events other than waterfall triggers which are disclosed
                in the 4.06 statement

            	
              Servicer/Trustee
                (to the extent of actual knowledge)

            
	
              3.03

            	
              Material
                Modification to Rights of Security Holders

            	 
	
              Disclosure
                is required of any material modification to documents defining the
                rights
                of Certificateholders, including the Pooling and Servicing
                Agreement

            	
              Trustee

            
	
              5.03

            	
              Amendments
                to Articles of Incorporation or Bylaws; Change in Fiscal
                Year

            	 
	
              Disclosure
                is required of any amendment “to the governing documents of the issuing
                entity”

            	
              Depositor

            

    

    

    
      
        
          
          

        

        
          Q-5

          
            

          

        

        
          
          

        

      

    

    

    

    
      	 	
              5.06

            	
              Change
                in Shell Company Status

            	 
	
              [Not
                applicable to ABS issuers]

            	
              Depositor

            
	
              6.01

            	
              ABS
                Informational and Computational Material

            	 
	
              [Not
                included in reports to be filed under Section 11.03]

            	
              Depositor

            
	
              6.02

            	
              Change
                of Servicer or Trustee

            	 
	
              Requires
                disclosure of any removal, replacement, substitution or addition
                of any
                servicer, affiliated servicer, other servicer servicing 10% or more
                of
                pool assets at time of report, other material servicers, certificate
                administrator or trustee.  Reg AB disclosure about any new
                servicer or trustee is also required.

            	
              Trustee
                or Servicer

            
	
              6.03

            	
              Change
                in Credit Enhancement or Other External Support

            	 
	
              Covers
                termination of any enhancement in manner other than by its terms,
                the
                addition of an enhancement, or a material change in the enhancement
                provided.  Applies to external credit enhancements as well as
                derivatives.  Reg AB disclosure about any new enhancement
                provider is also required.

            	
              Depositor
                or Trustee

            
	
              6.04

            	
              Failure
                to Make a Required Distribution

            	
              Trustee

            
	
              6.05

            	
              Securities
                Act Updating Disclosure

            	 
	
              If
                any material pool characteristic differs by 5% or more at the time
                of
                issuance of the securities from the description in the final prospectus,
                provide updated Reg AB disclosure about the actual asset
                pool.

            	
              Depositor

            
	
              If
                there are any new servicers or originators required to be disclosed
                under
                Regulation AB as a result of the foregoing, provide the information
                called
                for in Items 1108 and 1110 respectively.

            	
              Depositor

            
	
              7.01

            	
              Regulation
                FD Disclosure

            	
              Depositor

            
	
              8.01

            	
              Other
                Events

            	 
	
              Any
                event, with respect to which information is not otherwise called
                for in
                Form 8-K, that the registrant deems of importance to security
                holders.

            	
              Depositor

            
	
              9.01

            	
              Financial
                Statements and Exhibits

            	
              The
                Responsible Party applicable to reportable event

            
	
              10-K

            	
              Must
                be filed within 90 days of the fiscal year end for the
                registrant.

            
	
              9B

            	
              Other
                Information

            	 
	
              Disclose
                any information required to be reported on Form 8-K during the fourth
                quarter covered by the Form 10-K but not reported

            	
              The
                Responsible Party for the applicable Form 8-K item as indicated
                above

            

    

    

    
      
        
          
          

        

        
          Q-6

          
            

          

        

        
          
          

        

      

    

    

    

    
      	 	
              15

            	
              Exhibits
                and Financial Statement Schedules

            	 
	
              Item
                1112(b) –Significant Obligor Financial
                Information

            	
              Servicer

            
	
              Item
                1114(b)(2) – Credit Enhancement Provider Financial
                Information

               

              Determining
                applicable disclosure threshold

               

              Obtaining
                required financial information or effecting incorporation by
                reference

            	
               

              Depositor

               

               

            
	
              Item
                1115(b) – Derivative Counterparty Financial Information

               

              Determining
                current maximum probable exposure

               

              Determining
                current significance percentage

               

              Obtaining
                required financial information or effecting incorporation by
                reference

            	
              Depositor

               

               

               

            
	
              Item
                1117 – Legal proceedings pending against the following entities, or their
                respective property, that is material to Certificateholders, including
                proceedings known to be contemplated by governmental
                authorities:

               

              Sponsor
                (Seller)

               

              Depositor

               

              Trustee

               

              Issuing
                entity

               

              Servicer,
                affiliated Servicer, other Servicer servicing 20% or more of pool
                assets
                at time of report, other material servicers

               

              Originator
                of 20% or more of pool assets as of the Cut-off Date

            	
               

               

               

              Seller

               

              Depositor

               

              Trustee

               

              Depositor

               

               

              Servicer

               

              Servicer

               

            
	
              Item
                1119 – Affiliations and relationships between the following entities, or
                their respective affiliates, that are material to
                Certificateholders:

               

              Sponsor
                (Seller)

               

              Depositor

               

              Trustee

               

              Servicer,
                affiliated Servicer, other Servicer servicing 20% or more of pool
                assets
                at time of report, other material servicers

               

              Originator

               

              Credit
                Enhancer/Support Provider

               

              Significant
                Obligor

            	
               

               

               

              Seller

               

              Depositor

               

              Trustee
                (only as to affiliations between the Trustee and such other parties
                listed)

               

              Servicer

               

              Depositor

               

              Depositor

               

              Servicer

            

    

    

    
      
        
          
          

        

        
          Q-7

          
            

          

        

        
          
          

        

      

    

    

    

    
      	 	 	
              Item
                1122 – Assessment of Compliance with Servicing
                Criteria

            	
              Each
                Party participating in the servicing function

            
	
              Item
                1123 – Servicer Compliance Statement

            	
              Servicer

            

    

    

    

    

    

    
      
        
          
          

        

        
          Q-8

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      R

     

    FORM
      OF
      PERFORMANCE CERTIFICATION

     

    (Trustee)

     

    
      	
               

            	
              Re:

            	
              The
                Pooling and Servicing Agreement dated as of June 1, 2007 (the
                “Pooling and Servicing Agreement”) among IndyMac
                MBS, Inc., as Depositor, IndyMac Bank, F.S.B., as Seller and Servicer,
                and
                the undersigned, as Trustee (the
                “Trustee”)

            

    

     

    I,
      ________________________________, the _______________________ of the Trustee
      (the “Trustee”), certify to the Depositor and the
      Servicer, and their officers, with the knowledge and intent that they will
      rely
      upon this certification, that:

     

    (i)           I
      have reviewed the report on assessment of the Trustee’s compliance with the
      servicing criteria set forth in Item 1122(d) of Regulation AB (the
“Servicing Criteria”), provided in accordance with
      Rules 13a-18 and 15d-18 under Securities Exchange Act of 1934, as amended (the
      “Exchange Act”) and Item 1122 of Regulation AB (the
“Servicing Assessment”), the registered public
      accounting firm’s attestation report provided in accordance with Rules 13a-18
      and 15d-18 under the Exchange Act and Section 1122(b) of Regulation AB (the
      “Attestation Report”), all reports on Form 10-D
      containing statements to certificateholders filed in respect of the period
      included in the year covered by the annual report of the Trust Fund
      (collectively, the “Distribution Date
      Statements”);

     

    (ii)           Assuming
      the accuracy and completeness of the information delivered to the Trustee by
      the
      Servicer as provided in the Pooling and Servicing Agreement and subject to
      paragraph (iv) below, to its knowledge the distribution information determined
      by the Trustee and set forth in the Distribution Date Statements contained
      in
      all Form 10-D’s included in the year covered by the annual report of such Trust
      on Form 10-K for the calendar year 200[  ], is complete and does not
      contain any material misstatement of fact as of the last day of the period
      covered by such annual report;

     

    (iii)           Based
      solely on the information delivered to the Trustee by the Servicer as provided
      in the Pooling and Servicing Agreement, the distribution information required
      under the Pooling and Servicing Agreement to be contained in the Trust Fund’s
      Distribution Date Statements is included in such Distribution Date
      Statements;

     

    (iv)           The
      Trustee is not certifying as to the accuracy, completeness or correctness of
      the
      information which it received from the Servicer and did not independently verify
      or confirm the accuracy, completeness or correctness of the information provided
      by the Servicer;

     

    (v)           I
      am responsible for reviewing the activities performed by the Trustee as a person
      “performing a servicing function” under the Pooling and Servicing Agreement, and
      based on my knowledge and the compliance review conducted in preparing the
      Servicing Assessment and except as disclosed in the Servicing Assessment or
      the
      Attestation Report, the Trustee has fulfilled its obligations under the Pooling
      and Servicing Agreement; and

     

    (vi)           The
      Servicing Assessment and Attestation Report required to be provided by the
      Trustee and by Subcontractor, if any, pursuant to the Pooling and Servicing
      Agreement, have been provided to the Servicer and the Depositor.  Any
      material instances of noncompliance described in such reports have been
      disclosed to the Servicer and the Depositor.  Any material instance of
      noncompliance with the Servicing Criteria has been disclosed in such
      reports.

     

    

    
      
        
          
          

        

        
          R-1

          
            

          

        

        
          
          

        

      

    

     

    
       

      
        
          	
                	 Date:	 	 	 	 
	 	 	 	 
	
                   

                	
                  By:
                    

                	 	 
	 	
                   Name:

                	 
	 	
                   Title:

                	 
	 	 	 	 

        

         

        
 

      

    

    
      
        
          
          

        

        
          R-2

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      S

     

    FORM
      OF
      SERVICING CRITERIA TO BE ADDRESSED IN

    ASSESSMENT
      OF COMPLIANCE STATEMENT

     

    

     

    Key:

    X
      - obligation

    

    

    Where
      there are multiple checks for criteria the attesting party will identify in
      their management assertion that they are attesting only to the portion of the
      distribution chain they are responsible for in the related transaction
      agreements.

    

    

    
      	
              Reg
                AB Reference

            	
              Servicing
                Criteria

            	
               Servicer

            	
              Trustee

            	
              Notes

            
	
              1122(d)(1)(i)

            	
              Policies
                and procedures are instituted to monitor any performance or other
                triggers
                and events of default in accordance with the transaction
                agreements.

            	
              X

            	
              X

            	 
	
              1122(d)(1)(ii)

            	
              If
                any material servicing activities are outsourced to third parties,
                policies and procedures are instituted to monitor the third party’s
                performance and compliance with such servicing activities.

            	
              X

            	
              X

            	 
	
              1122(d)(1)(iii)

            	
              Any
                requirements in the transaction agreements to maintain a back-up
                servicer
                for the Pool Assets are maintained.

            	 	 	
              NA

            
	
              1122(d)(1)(iv)

            	
              A
                fidelity bond and errors and omissions policy is in effect on the
                party
                participating in the servicing function throughout the reporting
                period in
                the amount of coverage required by and otherwise in accordance with
                the
                terms of the transaction agreements.

            	
              X

            	 	 

    

    

    

    
      
        
          
          

        

        
          S-1

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              Reg
                AB Reference

            	
              Servicing
                Criteria

            	
              Primary
                Servicer

            	
              Trustee

            	
              Notes

            
	
              1122(d)(2)(i)

            	
              Payments
                on pool assets are deposited into the appropriate custodial bank
                accounts
                and related bank clearing accounts no more than two business days
                following receipt, or such other number of days specified in the
                transaction agreements.

            	
              X

            	
              X

            	 
	
              1122(d)(2)(ii)

            	
              Disbursements
                made via wire transfer on behalf of an obligor or to an investor
                are made
                only by authorized personnel.

            	
              X

            	
              X

            	 
	
              1122(d)(2)(iii)

            	
              Advances
                of funds or guarantees regarding collections, cash flows or distributions,
                and any interest or other fees charged for such advances, are made,
                reviewed and approved as specified in the transaction
                agreements.

            	
              X

            	 	 
	
              1122(d)(2)(iv)

            	
              The
                related accounts for the transaction, such as cash reserve accounts
                or
                accounts established as a form of over collateralization, are separately
                maintained (e.g., with respect to commingling of cash) as set forth
                in the
                transaction agreements.

            	
              X

            	
              X

            	 
	
              1122(d)(2)(v)

            	
              Each
                custodial account is maintained at a federally insured depository
                institution as set forth in the transaction agreements. For purposes
                of
                this criterion, “federally insured depository institution” with respect to
                a foreign financial institution means a foreign financial institution
                that
                meets the requirements of Rule 13k-1(b)(1) of the Securities Exchange
                Act.

            	
              X

            	
              X

            	 
	
              1122(d)(2)(vi)

            	
              Unissued
                checks are safeguarded so as to prevent unauthorized
                access.

            	
              X

            	 	 
	
              1122(d)(2)(vii)

            	
              Reconciliations
                are prepared on a monthly basis for all asset-backed securities related
                bank accounts, including custodial accounts and related bank clearing
                accounts. These reconciliations are (A) mathematically accurate;
                (B)
                prepared within 30 calendar days after the bank statement cutoff
                date, or
                such other number of days specified in the transaction agreements;
                (C)
                reviewed and approved by someone other than the person who prepared
                the
                reconciliation; and (D) contain explanations for reconciling items.
                These
                reconciling items are resolved within 90 calendar days of their original
                identification, or such other number of days specified in the transaction
                agreements.

            	
              X

            	
              X

            	 

    

    

    

    

    
      
        
          
          

        

        
          S-2

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              Reg
                AB Reference

            	
              Servicing
                Criteria

            	
              Servicer

            	
              Trustee

            	
              Notes

            
	
              1122(d)(3)(i)

            	
              Reports
                to investors, including those to be filed with the Commission, are
                maintained in accordance with the transaction agreements and applicable
                Commission requirements. Specifically, such reports (A) are prepared
                in
                accordance with timeframes and other terms set forth in the transaction
                agreements; (B) provide information calculated in accordance with
                the
                terms specified in the transaction agreements; (C) are filed with
                the
                Commission as required by its rules and regulations; and (D) agree
                with
                investors’ or the trustee’s records as to the total unpaid principal
                balance and number of Pool Assets serviced by the
                Servicer.

            	
              X

            	
              X

            	 
	
              1122(d)(3)(ii)

            	
              Amounts
                due to investors are allocated and remitted in accordance with timeframes,
                distribution priority and other terms set forth in the transaction
                agreements.

            	
              X

            	
              X

            	 
	
              1122(d)(3)(iii)

            	
              Disbursements
                made to an investor are posted within two business days to the Servicer’s
                investor records, or such other number of days specified in the
                transaction agreements.

            	
              X

            	
              X

            	 
	
              1122(d)(3)(iv)

            	
              Amounts
                remitted to investors per the investor reports agree with cancelled
                checks, or other form of payment, or custodial bank
                statements.

            	
              X

            	
              X

            	 

    

    

    

    
      
        
          
          

        

        
          S-3

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              Reg
                AB Reference

            	
              Servicing
                Criteria

            	
              Servicer

            	
              Trustee

            	
              Notes

            
	
              1122(d)(4)(i)

            	
              Collateral
                or security on pool assets is maintained as required by the transaction
                agreements or related pool asset documents.

            	
              X

            	
              X

            	 
	
              1122(d)(4)(ii)

            	
              Pool
                assets  and related documents are safeguarded as required by the
                transaction agreements.

            	
              X

            	
              X

            	 
	
              1122(d)(4)(iii)

            	
              Any
                additions, removals or substitutions to the asset pool are made,
                reviewed
                and approved in accordance with any conditions or requirements in
                the
                transaction agreements.

            	
              X

            	
              X

            	 
	
              1122(d)(4)(iv)

            	
              Payments
                on pool assets, including any payoffs, made in accordance with the
                related
                pool asset documents are posted to the Servicer’s obligor records
                maintained no more than two business days after receipt, or such
                other
                number of days specified in the transaction agreements, and allocated
                to
                principal, interest or other items (e.g., escrow) in accordance with
                the
                related pool asset documents.

            	
              X

            	 	 
	
              1122(d)(4)(v)

            	
              The
                Servicer’s records regarding the pool assets agree with the Servicer’s
                records with respect to an obligor’s unpaid principal
                balance.

            	
              X

            	 	 
	
              1122(d)(4)(vi)

            	
              Changes
                with respect to the terms or status of an obligor's pool assets (e.g.,
                loan modifications or re-agings) are made, reviewed and approved
                by
                authorized personnel in accordance with the transaction agreements
                and
                related pool asset documents.

            	
              X

            	 	 
	
              1122(d)(4)(vii)

            	
              Loss
                mitigation or recovery actions (e.g., forbearance plans, modifications
                and
                deeds in lieu of foreclosure, foreclosures and repossessions, as
                applicable) are initiated, conducted and concluded in accordance
                with the
                timeframes or other requirements established by the transaction
                agreements.

            	
              X

            	 	 
	
              1122(d)(4)(viii)

            	
              Records
                documenting collection efforts are maintained during the period a
                pool
                asset is delinquent in accordance with the transaction agreements. Such
                records are maintained on at least a monthly basis, or such other
                period
                specified in the transaction agreements, and describe the entity’s
                activities in monitoring delinquent pool assets including, for example,
                phone calls, letters and payment rescheduling plans in cases where
                delinquency is deemed temporary (e.g., illness or
                unemployment).

            	
              X

            	 	 
	
              1122(d)(4)(ix)

            	
              Adjustments
                to interest rates or rates of return for pool assets with variable
                rates
                are computed based on the related pool asset documents.

            	
              X

            	 	 

    

    

    
      
        
          
          

        

        
          S-4

          
            

          

        

        
          
          

        

      

    

    

    

    
      	
              Reg
                AB Reference

            	
              Servicing
                Criteria

            	
              Servicer

            	
              Trustee

            	
              Notes

            
	
              1122(d)(4)(x)

            	
              Regarding
                any funds held in trust for an obligor (such as escrow accounts):
                (A) such
                funds are analyzed, in accordance with the obligor’s pool asset documents,
                on at least an annual basis, or such other period specified in the
                transaction agreements; (B) interest on such funds is paid, or credited,
                to obligors in accordance with applicable pool asset documents and
                state
                laws; and (C) such funds are returned to the obligor within 30 calendar
                days of full repayment of the related pool assets, or such other
                number of
                days specified in the transaction agreements.

            	
              X

            	 	 
	
              1122(d)(4)(xi)

            	
              Payments
                made on behalf of an obligor (such as tax or insurance payments)
                are made
                on or before the related penalty or expiration dates, as indicated
                on the
                appropriate bills or notices for such payments, provided that such
                support
                has been received by the servicer at least 30 calendar days prior
                to these
                dates, or such other number of days specified in the transaction
                agreements.

            	
              X

            	 	 
	
              1122(d)(4)(xii)

            	
              Any
                late payment penalties in connection with any payment to be made
                on behalf
                of an obligor are paid from the Servicer’s funds and not charged to the
                obligor, unless the late payment was due to the obligor’s error or
                omission.

            	
              X

            	 	 
	
              1122(d)(4)(xiii)

            	
              Disbursements
                made on behalf of an obligor are posted within two business days
                to the
                obligor’s records maintained by the servicer, or such other number of days
                specified in the transaction agreements.

            	
              X

            	 	 
	
              1122(d)(4)(xiv)

            	
              Delinquencies,
                charge-offs and uncollectible accounts are recognized and recorded
                in
                accordance with the transaction agreements.

            	
              X

            	 	 
	
              1122(d)(4)(xv)

            	
              Any
                external enhancement or other support, identified in Item 1114(a)(1)
                through (3) or Item 1115 of Regulation AB, is maintained as set forth
                in
                the transaction agreements.

            	
              X(with
                respect to a swap
                disclosure event)

            	
              X

            	 

    

    

     

    

    
      
        
          
          

        

        
          S-5

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      T

     

    [FORM
      OF]
      LIST OF ITEM 1119 PARTIES

     

    ASSET
      BACKED CERTIFICATES

    Series
      200_-__

     

    [Date]

     

    
      	
              Party

            	
              Contact
                Information

            
	 	 
	 	 
	 	 
	 	 
	 	 
	 	 

    

    

    

    
      
        
          
          

        

        
          T-1

          
            

          

        

        
          
          

        

      

    

    

    EXHIBIT
      U

     

    [FORM
      OF]
      SARBANES-OXLEY CERTIFICATION

    (Replacement
      Servicer)

     

    

    Re:           IndyMac
      IMSC Mortgage Loan Trust 2007-AR1

    

    

    The
      undersigned Servicer hereby
      certifies to the Depositor and its officers, directors and Affiliates
      (collectively, the “Certification Parties”) as follows, with the knowledge and
      intent that the Certification Parties will rely on this Certification in
      connection with the certification concerning the Trust Fund to be signed by
      an
      officer of the Depositor and submitted to the Securities and Exchange Commission
      pursuant to the Sarbanes-Oxley Act of 2002:

    

    1.           I
      have reviewed the servicer compliance statement of the Servicer provided in
      accordance with Item 1123 of Regulation AB (the “Compliance Statement”), the
      report on assessment of the Servicer’s compliance with the servicing criteria
      set forth in Item 1122(d) of Regulation AB (the “Servicing Criteria”), provided
      in accordance with Rules 13a-18 and 15d-18 under Securities Exchange Act of
      1934, as amended (the “Exchange Act”) and Item 1122 of Regulation AB (the
“Servicing Assessment”), the registered public accounting firm’s attestation
      report provided in accordance with Rules 13a-18 and 15d-18 under the Exchange
      Act and Section 1122(b) of Regulation AB (the “Attestation Report”), and all
      servicing reports, officer’s certificates and other information relating to the
      servicing of the Mortgage Loans by the Servicer during 200[ ] that were
      delivered by the Servicer to the Trustee pursuant to the Agreement
      (collectively, the “Servicing Information”);

    

    2.           Based
      on my knowledge, the Servicing Information, taken as a whole, does not contain
      any untrue statement of a material fact or omit to state a material fact
      necessary to make the statements made, in the light of the circumstances under
      which such statements were made, not misleading with respect to the period
      of
      time covered by the Servicing Information;

    

    3.           Based
      on my knowledge, all of the Servicing Information required to be provided by
      the
      Servicer under the Agreement has been provided to the Depositor or the Trustee,
      as applicable;

    

    4.           I
      am responsible for reviewing the activities performed by the Servicer as
      servicer under the Servicing Agreement (the “Pooling and Servicing Agreement”)
      relating to the above-referenced Series, among IndyMac MBS, Inc., as Depositor,
      IndyMac Bank, F.S.B., as Seller and Servicer, and Deutsche Bank National Trust
      Company, as Trustee and based on my knowledge and the compliance review
      conducted in preparing the Compliance Statement and except as disclosed in
      the
      Compliance Statement, the Pooling and Servicing Assessment or the Attestation
      Report, the Servicer has fulfilled its obligations under the Agreement in all
      material respects; and

    

    5.           The
      Compliance Statement required to be delivered by the Servicer pursuant to the
      Pooling and Servicing Agreement, and the Servicing Assessment and Attestation
      Report required to be provided by the Servicer and by any Reporting
      Subcontractor pursuant to the Agreement, have been provided to the
      Depositor.  Any material instances of noncompliance described in such
      reports have been disclosed to the Depositor.  Any material instance
      of noncompliance with the Servicing Criteria has been disclosed in such
      reports.

    

    
      
        
          
          

        

        
          U-1

          
            

          

        

        
          
          

        

      

    

    

    

    
       

      
        
          	 	[SERVICER]	 
	 	 	 	 
	
                   

                	
                  By:
                    

                	 	 
	 	
                   Name:

                	 
	 	
                   Title:

                	 
	 	 	 	 

        

        
          
            
              	
                    	 Date:	 	 	 	 

            

        

      

    

     

    U-2

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