Document:

EX-10.5

 

Exhibit 10.5

CA, Inc.

Incentive Stock Option Agreement

	 	 	 	 	 
	 

	 	 

	 	 
	Name of Option Holder

	 	EMPLID	 	 

	 	 	 
	Option Number

	 	Option
	Total Number of Shares Underlying Option

	 	**Total Granted**
	Option Date

	 	Option Date
	Exercise Price Per Share

	 	Ex Price

INCENTIVE STOCK OPTION granted by CA, Inc., a Delaware corporation, (the
“Company”) to the above-named option holder (the “Optionee”), an employee of the Company or one of
its subsidiaries, pursuant to the CA, Inc. 2007 Incentive Plan (the “Plan”) the terms of which are
incorporated herein by reference and which, in the event of any conflict, shall control over the
terms contained herein. A copy of the Plan (or related Prospectus delivered to you with this
Agreement) may be obtained at no cost by contacting the HR Service Center at 1-866-514-4772 or
opening an issue via the web at http://caportal.ca.com (via Employee Self-Service – ESS). If you
are located outside of North America, please contact your local Human Resources Representative.

1. Grant and Vesting Option

Subject to the vesting schedule below, the Company hereby grants to the Optionee an option to
purchase on the terms herein provided a total of the number of shares of common stock, $.10 par
value, of the Company set forth above, at an exercise price per share as set forth above.

This option may be exercised only with respect to the portion thereof that is vested. The right to
exercise this option shall become vested according to the following vesting schedule:

	 	 	 
	 	 	Percentage (%) of Option Shares With Respect to
	[Anniversary/Other] Date	 	Which Optionee Has a Vested Option to Exercise

Vested options shall be calculated only in terms of full years (for example, from one anniversary
date to the next) and no partial vesting credit shall be given for partial years of employment.

This option shall expire and shall not be exercisable after the expiration of ten (10) years from
the date it is granted.

2. Stock to be Delivered

Stock to be delivered upon the exercise of this option may constitute an original issue of
authorized stock or may consist of treasury stock.

3. Exercise of Option

Each election to exercise this option shall be made by delivering to the Company or its agent a
properly executed exercise notice, together with irrevocable instructions to a broker to deliver
promptly to the Company the amount of sale or loan proceeds with respect to the portion of shares
to be acquired upon exercise. Exercise of this option will not be permitted if the Company
determines, in its sole and absolute discretion, that issuance of shares at that time could
violate any law or regulation.

 

 

In the event an option is exercised by the executor or administrator of a deceased Optionee, or by
the person or persons to whom the option has been transferred by the Optionee’s will or the
applicable laws of descent and distribution, the Company shall be under no obligation to deliver
stock there under unless and until the Company is satisfied that the person or persons exercising
the option is or are the duly
appointed executor(s) or administrator(s) of the deceased Optionee or the person to whom the
option has been transferred by the Optionee’s will or by the applicable laws of descent and
distribution.

4. Payment for and Delivery of Stock

Payment in full by cash, certified check, bank draft, wire transfer or postal or express money
order may be made for all shares for which this option is exercised at the time of such exercise,
and no shares shall be delivered until such payment is made.

Alternatively, payment may be made by (i) delivering to the Company a properly executed exercise
notice, together with irrevocable instructions to a broker to deliver promptly to the Company the
amount of sale or loan proceeds with respect to the portion of the shares to be acquired upon
exercise having a Fair Market Value on the date of exercise equal to the sum of the applicable
portion of the exercise price being so paid and appropriate tax withholding, (ii) tendering to the
Company (by physical delivery or by attestation) certificates representing shares of outstanding
common stock, par value $.10, of the Company that have been held by the Optionee for at least six
months prior to exercise, having a Fair Market Value on the day prior to the date of exercise
equal to the applicable portion of the exercise price being so paid, together with stock powers
duly executed and with signature guaranteed; or (iii) any combination of the foregoing.
Notwithstanding the foregoing, a form of payment will not be available if the Company determines,
in its sole and absolute discretion, that such form of payment could violate any law or
regulation.

The Company shall not be obligated to deliver any stock unless and until (i) satisfactory
arrangements have been made with the Company for the payment of any applicable tax withholding
obligations, (ii) all applicable federal and state laws and regulations have been complied with,
(iii) in the event the outstanding common stock is at the time listed upon any stock exchange, the
            shares to be delivered have been listed, or authorized to be listed upon official notice of
issuance upon the exchanges where it is listed, and (iv) all legal matters in connection with the
issuance and delivery of the shares have been approved by counsel of the Company. The Optionee
shall have no rights of a stockholder until the stock is actually delivered to him. Further, the
Optionee acknowledges and consents that, pursuant to the Plan, if the Compensation and Human
Resource Committee determines that any consent (as defined in the Plan) is necessary or desirable
as a condition of, or in connection with the grant of this option, delivery of shares or other
property or the taking of any other action, then such action will not be taken unless and until
such consent is effected or obtained to the Compensation and Human Resource Committee’s
satisfaction.

5. Recovery and Reimbursement of Option Gain

The Company shall have the right to recover, or receive reimbursement for, any compensation or
profit realized by the exercise of this option or by the disposition of any option shares to the
extent that the Company has such a right of recovery or reimbursement under applicable securities
laws.

6. Nontransferability of Option

This option may not be transferred by the Optionee otherwise than by will or the laws of descent
and distribution, and during the Optionee’s lifetime this option may be exercised only by the
Optionee.

7. Termination of Employment

Upon termination of employment, other than termination of employment by reason of (i) Retirement,
as defined in the Plan, (ii) disability, or (iii) death, any portion of this option that has not
become vested as of the date of termination shall immediately terminate and any portion of this
option that has already vested as of such date shall terminate ninety (90) days after termination
of employment or the expiration date of the option, whichever occurs first.

8. Retirement

In the event of the Optionee’s Retirement, as defined in the Plan, from the employ of Company or
any subsidiary, any portion of this option that has not become vested as of the date of Retirement
shall immediately terminate and any portion of this option that has already vested as of such date
shall terminate one (1) year after such retirement or on the expiration date of the option,
whichever occurs first.

9. Disability

In the event of termination of employment of the Optionee because of disability, any unexercised
portion of this option held by the Optionee at the date of such termination (vested and unvested)
will immediately become exercisable in full and will remain exercisable by the Optionee for a
period of one (1) year or the remaining term of the option, whichever is shorter.

10. Death

If an Optionee dies while employed by the Company, any unexercised portion of this option held by
the Optionee at his date of death (vested and unvested) will immediately become exercisable in
full and will remain exercisable by the estate of the deceased Optionee or the person given
authority to exercise his options by his will or by operation of law for a period of one (1) year
or the remaining term of the options, whichever is shorter.

11. Changes In Stock

 

 

In the event of any change in the number of issued shares (or issuance of shares of stock other
than shares of Common Stock) by reason of any stock split, reverse stock split, or stock
dividend, recapitalization, reclassification, merger, consolidation, split-up, spin-off,
reorganization, combination, or exchange of shares, the exercisability of stock purchase rights
received under the Rights Agreement, the issuance of warrants or other rights to purchase shares
or other securities, or any other change in corporate structure or in the event of any
extraordinary distribution (whether in the form of cash, shares, other securities or other
property), the Compensation and Human Resource Committee shall adjust the number or kind of shares
that may be issued under the Plan, and the terms of this option (including, without limitation,
the number of shares subject to this option, the type of property to which this option relates and
the exercise price of this option) in such manner as the Compensation and Human Resource Committee
shall determine is appropriate in order to prevent the dilution or enlargement of the benefits or
potential benefits intended to be made available under the Plan, and such adjustment shall be
conclusive and binding for all purposes under the Plan. Notwithstanding the foregoing, no
adjustments shall be made with respect to Qualified Performance Awards granted to a Key Employee
to the extent such adjustment would cause the award to fail to qualify as performance-based
compensation under Section 162(m) of the Code and no adjustment shall be required if the
Compensation and Human Resource Committee determines that such action could cause an award to fail
to satisfy the conditions of an applicable exception from the requirements of Section 409A of the
Code (“Section 409A”) or otherwise could subject the Optionee to the additional tax imposed under
Section 409A in respect of an outstanding award. In the event of (i) a consolidation or merger in
which the Company is not the surviving corporation, (ii) a consolidation or merger in which the
Company is the surviving corporation but holders of shares receive securities or another
corporation, or (iii) a sale of substantially all of the Company’s assets (as an entirety) or
capital stock to another person, this option shall be deemed to apply to the equivalent amount of
securities, cash or other property that is received by Company stockholders in exchange for their
Company shares pursuant to such transaction; provided, however, that the Compensation and Human
Resource Committee may, in its discretion, either (i) provide, upon written notice to the
Optionee, that this option shall terminate as of the date specified in such notice (in which case
the Compensation and Human Resource Committee may, but does not have to, accelerate the vesting of
any portion of this option that has not already vested as of the date such notice is provided to
the Optionee), or (ii) cancel this option and in consideration of such cancellation pay to the
Optionee an amount in cash with respect to each share then remaining under the option equal to
the difference between the Fair Market Value of such share on the date of cancellation (or, if
greater, the per share value of the consideration received by Company stockholders as a result of
the merger, consolidation, reorganization or sale) and the per share exercise price of the option.

12. Continuance of Employment

This option shall not be deemed to obligate the Company or any subsidiary to retain the Optionee
in its employ for any period.

13. Provisions of the Plan and Section 422 of the Internal Revenue Code

This Agreement incorporates by reference Section 422 of the Internal Revenue Code of 1986, as
amended, and the terms of the Plan [(including without limitation, Section 7.5 of the Plan, which
provides for the forfeiture of this option and the return of any profit realized upon the exercise
of such option in certain circumstances)], and is subject to the provisions thereof. The Plan and
the options granted pursuant to this Agreement are intended to comply with Section 422 of the
Internal Revenue Code of 1986, as amended, and all of the regulations issued pursuant thereto.
This Agreement shall be construed in accordance with the Plan, said Section 422 and the
regulations issued there under and any provision of this Agreement held to be inconsistent
therewith shall be severable and of no force or effect.

14. Incorporation by Reference of Employment Agreement

If the Optionee has an employment agreement with CA, Inc. which contains different or additional
provisions relating to vesting of the stock option grant, or otherwise conflicts with the terms of
this Agreement, the provisions of the employment agreement shall govern and be incorporated herein
by reference.

IN WITNESS WHEREOF, CA, Inc. has caused this Agreement to be executed by the President and CEO.
This option is granted at the Company’s principal executive office, One CA Plaza, Islandia, New
York 11749, on the date stated above.

	 	 	 	 	 
	 	CA, Inc.

 	 
	 	By<PAGE>

                                                                     Exhibit 4.1

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.,
                                    Depositor

                             WELLS FARGO BANK, N.A.,
                  Master Servicer and Securities Administrator

                                       and

                      HSBC BANK USA, NATIONAL ASSOCIATION,
                                     Trustee

                         POOLING AND SERVICING AGREEMENT

                            Dated as of July 1, 2007

                                   ----------

            Mortgage Pass-Through Certificates, MANA Series 2007-OAR4

<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
ARTICLE I    DEFINITIONS.................................................      9
   Section 1.02  Accounting..............................................     58

ARTICLE II   CONVEYANCE OF MORTGAGE LOANS; ORIGINAL ISSUANCE OF
             CERTIFICATES................................................     59
   Section 2.01  Conveyance of Mortgage Loans to Trustee.................     59
   Section 2.02  Acceptance of Mortgage Loans by Trustee.................     62
   Section 2.03  Assignment of Interest in the Mortgage Loan Purchase
                 Agreement...............................................     65
   Section 2.04  Substitution of Mortgage Loans..........................     66
   Section 2.05  Issuance of Certificates................................     67
   Section 2.06  Representations and Warranties Concerning the
                 Depositor...............................................     67
   Section 2.07  Representations and Warranties Concerning the Master
                 Servicer and Securities Administrator...................     68
   Section 2.08  [Reserved]..............................................     70
   Section 2.09  Depositor Notification of NIM Notes.....................     70

ARTICLE III  ADMINISTRATION OF MORTGAGE LOANS............................     70
   Section 3.01  Master Servicer.........................................     70
   Section 3.02  REMIC-Related Covenants.................................     71
   Section 3.03  Monitoring of Servicers.................................     71
   Section 3.04  Fidelity Bond...........................................     72
   Section 3.05  Power to Act; Procedures................................     72
   Section 3.06  Due-on-Sale Clauses; Assumption Agreements..............     73
   Section 3.07  [Reserved]..............................................     73
   Section 3.08  Documents, Records and Funds in Possession of Master
                 Servicer To Be Held for Trustee.........................     74
   Section 3.09  Standard Hazard Insurance and Flood Insurance Policies..     74
   Section 3.10  Presentment of Claims and Collection of Proceeds........     75
   Section 3.11  Maintenance of the Primary Mortgage Insurance Policies..     75
   Section 3.12  Trustee to Retain Possession of Certain Insurance
                 Policies and Documents..................................     75
   Section 3.13  Realization Upon Defaulted Mortgage Loans...............     76
   Section 3.14  Compensation for the Master Servicer....................     76
   Section 3.15  REO Property............................................     76
   Section 3.16  Annual Statement as to Compliance.......................     77
   Section 3.17  Reports on Assessment of Compliance and Attestation.....     77
   Section 3.18  Periodic Filings........................................     79
   Section 3.19  Compliance with Regulation AB...........................     86
   Section 3.20  [Reserved]..............................................     86
   Section 3.21  Rights of the NIMs Insurer..............................     86

ARTICLE IV   ACCOUNTS....................................................     86
</TABLE>

<PAGE>

<TABLE>
<S>                                                                         <C>
   Section 4.01  Collection Accounts.....................................     86
   Section 4.02  Master Servicer Collection Account......................     87
   Section 4.03  Permitted Withdrawals and Transfers from the Master
                 Servicer Collection Account.............................     88
   Section 4.04  Distribution Account....................................     89
   Section 4.05  Permitted Withdrawals and Transfers from the
                 Distribution Account....................................     90

ARTICLE V    CERTIFICATES................................................     92
   Section 5.01  The Certificates........................................     92
   Section 5.02  Certificate Register; Registration of Transfer and
                 Exchange of Certificates................................     92
   Section 5.03  Mutilated, Destroyed, Lost or Stolen Certificates.......     96
   Section 5.04  Persons Deemed Owners...................................     97
   Section 5.05  Access to List of Certificateholders' Names and
                 Addresses...............................................     97
   Section 5.06  Book-Entry Certificates.................................     97
   Section 5.07  Notices to Depository...................................     98
   Section 5.08  Definitive Certificates.................................     98
   Section 5.09  Maintenance of Office or Agency.........................     99

ARTICLE VI   PAYMENTS TO CERTIFICATEHOLDERS..............................     99
   Section 6.01  Distributions on the Certificates.......................     99
   Section 6.02  Distributions...........................................    110
   Section 6.03  Statements to Certificateholders........................    111
   Section 6.04  Advances................................................    114
   Section 6.05  Compensating Interest Payments..........................    114

ARTICLE VII  THE MASTER SERVICER AND THE DEPOSITOR.......................    114
   Section 7.01  Liabilities of the Master Servicer......................    114
   Section 7.02  Merger or Consolidation of the Master Servicer..........    114
   Section 7.03  Indemnification from the Master Servicer and the
                 Depositor...............................................    115
   Section 7.04  Limitations on Liability of the Master Servicer and
                 Others..................................................    115
   Section 7.05  Master Servicer Not to Resign...........................    116
   Section 7.06  Successor Master Servicer...............................    117
   Section 7.07  Sale and Assignment of Master Servicing.................    117

ARTICLE VIII DEFAULT.....................................................    118
   Section 8.01  Events of Default.......................................    118
   Section 8.02  Trustee to Act; Appointment of Successor................    119
   Section 8.03  Notification to Certificateholders......................    121
   Section 8.04  Waiver of Defaults......................................    121
   Section 8.05  List of Certificateholders..............................    121

ARTICLE IX   CONCERNING THE TRUSTEE AND THE SECURITIES ADMINISTRATOR.....    121
</TABLE>

                                       iii

<PAGE>

<TABLE>
<S>                                                                         <C>
   Section 9.01  Duties of Trustee.......................................    121
   Section 9.02  Certain Matters Affecting the Trustee and the Securities
                 Administrator...........................................    124
   Section 9.03  Trustee and Securities Administrator Not Liable for
                 Certificates or Mortgage Loans..........................    126
   Section 9.04  Trustee and Securities Administrator May Own
                 Certificates............................................    126
   Section 9.05  Trustee's and Securities Administrator's Fees and
                 Expenses................................................    126
   Section 9.06  Eligibility Requirements for Trustee and Securities
                 Administrator...........................................    127
   Section 9.07  Insurance...............................................    128
   Section 9.08  Resignation and Removal of the Trustee and Securities
                 Administrator...........................................    128
   Section 9.09  Successor Trustee and Successor Securities
                 Administrator...........................................    129
   Section 9.10  Merger or Consolidation of Trustee or Securities
                 Administrator...........................................    129
   Section 9.11  Appointment of Co-Trustee or Separate Trustee...........    130
   Section 9.12  Federal Information Returns and Reports to
                 Certificateholders; REMIC Administration................    131

ARTICLE X    TERMINATION.................................................    139
   Section 10.01 Termination upon Liquidation or Repurchase of all
                 Mortgage Loans..........................................    139
   Section 10.02 Final Distribution on the Certificates..................    141
   Section 10.03 Additional Termination Requirements.....................    142

ARTICLE XI   MISCELLANEOUS PROVISIONS....................................    143
   Section 11.01 Intent of Parties.......................................    143
   Section 11.02 Amendment...............................................    143
   Section 11.03 Recordation of Agreement................................    144
   Section 11.04 Limitation on Rights of Certificateholders..............    145
   Section 11.05 Acts of Certificateholders..............................    145
   Section 11.06 Governing Law...........................................    147
   Section 11.07 Notices.................................................    147
   Section 11.08 Severability of Provisions..............................    147
   Section 11.09 Successors and Assigns..................................    147
   Section 11.10 Article and Section Headings............................    148
   Section 11.11 Counterparts............................................    148
   Section 11.12 Notice to Rating Agencies...............................    148
   Section 11.13 Third Party Rights......................................    148
   Section 11.14 Additional Rights of the NIMs Insurer...................    148

ARTICLE XII  PROHIBITED TRANSACTIONS.....................................    149
   Section 12.01 [Reserved]..............................................    149
   Section 12.02 Prohibited Transactions and Activities..................    149
   Section 12.03 Indemnification with Respect to Prohibited Transactions
                 or Loss of REMIC Status.................................    149
   Section 12.04 REO Property............................................    150
</TABLE>

                                       iv

<PAGE>

<TABLE>
<S>                                                                         <C>
ARTICLE XIII [RESERVED]..................................................    150

ARTICLE XIV  THE DEPOSITOR...............................................    150
   Section 14.01 Respective Liabilities of the Depositor.................    150
   Section 14.02 Merger or Consolidation of the Depositor................    150
   Section 14.03 Limitation on Liability of the Depositor and Others.....    151
</TABLE>

                                        v

<PAGE>

EXHIBITS

Exhibit A-1  - Form of Class A Certificates and Class M Certificates
Exhibit A-2  - Form of Class B Certificates
Exhibit A-3  - Form of Class R Certificate
Exhibit A-4  - Form of Class P Certificate
Exhibit A-5  - Form of Class C Certificate
Exhibit B    - Mortgage Loan Schedule
Exhibit C    - [Reserved]
Exhibit D    - Request for Release of Documents
Exhibit E-1  - Form of Transferee's Letter
Exhibit E-2  - Form of Transferor Certificate
Exhibit F-1  - Form of Transferor Representation Letter
Exhibit F-2  - Form of Investor Representation Letter
Exhibit F-3  - Form of Rule 144A Letter
Exhibit F-4  - Form of Middleman Representation Letter
Exhibit G    - Form of Custodial Agreement
Exhibit H    - One-Month LIBOR Corridor Table
Exhibit I    - [Reserved]
Exhibit J    - Mortgage Loan Purchase Agreement
Exhibit K    - Servicing Criteria To Be Addressed in Assessment of Compliance
Exhibit L    - Form of Sarbanes-Oxley Certification
Exhibit M    - Form of Back-up Sarbanes-Oxley Certification
Exhibit N    - Form of Corridor Contract
Exhibit O    - Additional Disclosure Notification
Exhibit P    - Form of Item 1123 Certification of Servicer
Exhibit Q-1  - Additional Form 10-D Disclosure
Exhibit Q-2  - Additional Form 10-K Disclosure
Exhibit Q-3  - Form 8-K Disclosure Information
Exhibit R    - Form of Swap Agreement

                                       vi
<PAGE>

     This Pooling and Servicing Agreement, dated as of July 1, 2007 (this
"Agreement" or this "Pooling and Servicing Agreement"), among MERRILL LYNCH
MORTGAGE INVESTORS, INC., as depositor (the "Depositor"), WELLS FARGO BANK,
N.A., as master servicer (in such capacity, the "Master Servicer") and as
securities administrator (in such capacity, the "Securities Administrator"), and
HSBC BANK USA, NATIONAL ASSOCIATION, as trustee (the "Trustee").

                              PRELIMINARY STATEMENT

     The Depositor has acquired the Mortgage Loans from the Sponsor and at the
Closing Date is the owner of the Mortgage Loans and the other related property
being conveyed by the Depositor to the Trustee hereunder on behalf of the
Issuing Entity for inclusion in the Trust Fund. On the Closing Date, the
Depositor will acquire the Certificates from the Trustee as consideration for
the Depositor's transfer to the Issuing Entity of the Mortgage Loans and the
other related property constituting that portion of the Trust Fund relating to
the Certificates. The Depositor has duly authorized the execution and delivery
of this Agreement to provide for the conveyance to the Issuing Entity of the
Mortgage Loans and the other related property constituting that portion of the
Trust Fund relating to the Certificates. All covenants and agreements made by
the Sponsor in the Mortgage Loan Purchase Agreement and in this Agreement and
all covenants and agreements made by the Depositor, the Trustee, the Securities
Administrator and the Master Servicer herein with respect to the Mortgage Loans
and the other related property constituting that portion of the Trust Fund
relating to the Certificates are for the benefit of the Holders from time to
time of the Certificates and, to the extent provided herein, the NIMs Insurer.
The Depositor, the Trustee, the Securities Administrator and the Master Servicer
are entering into this Agreement, and the Trustee on behalf of the Issuing
Entity is accepting the Trust Fund created hereby, for good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged.

     As provided herein, the Securities Administrator shall elect that the Trust
Fund be treated for federal income tax purposes as consisting of (i) three real
estate mortgage investment conduits, (ii) the right to receive payments
distributable to the Class P Certificates, (iii) the Corridor Contract and the
Corridor Contract Account, (iv) the grantor trusts described in Section 9.12
hereof and (v) the Supplemental Interest Trust, which in turn will hold the Swap
Agreement. The SWAP REMIC will consist of all of the assets constituting the
Trust Fund (other than the assets described in clauses (ii), (iii), (iv) and (v)
above, other than the SWAP REMIC Regular Interests and other than the Lower Tier
REMIC Regular Interests) and will be evidenced by the SWAP REMIC Regular
Interests (which will be uncertificated and will represent the "regular
interests" in the SWAP REMIC) and the Class SWR Interest as the single "residual
interest" in the SWAP REMIC. The Lower Tier REMIC will consist of SWAP REMIC
Regular Interests and will be evidenced by the Lower Tier REMIC Regular
Interests (which will be uncertificated and will represent the "regular
interests" in the Lower Tier REMIC) and the Class LTR Interest as the single
"residual interest" in the Lower Tier REMIC. The Trustee will hold the Lower
Tier REMIC Regular Interests. The Upper Tier REMIC will consist of the Lower
Tier REMIC Regular Interests and will be evidenced by the REMIC Regular
Interests (which will represent the "regular interests" in the Upper Tier REMIC)
and the Residual Interest as the single "residual interest" in the Upper Tier
REMIC. The Class R Certificate will represent beneficial ownership of the Class
SWR Interest, the Class LTR Interest and the

<PAGE>

Residual Interest. The "latest possible maturity date" for federal income tax
purposes of all interests created hereby will be the Latest Possible Maturity
Date.

     THE SWAP REMIC

     The following table sets forth the designations, initial principal balances
and interest rates for each interest in the SWAP REMIC:

<TABLE>
<CAPTION>
Class    Initial Principal Balance   Interest Rate
------   -------------------------   -------------
<S>      <C>                         <C>
SW-Z          $60,383,142.660             (1)
SW-1A         $ 3,787,976.000             (2)
SW-1B         $ 3,787,976.000             (3)
SW-2A         $ 3,487,514.000             (2)
SW-2B         $ 3,487,514.000             (3)
SW-3A         $ 3,064,782.000             (2)
SW-3B         $ 3,064,782.000             (3)
SW-4A         $ 2,796,612.500             (2)
SW-4B         $ 2,796,612.500             (3)
SW-5A         $ 2,645,908.000             (2)
SW-5B         $ 2,645,908.000             (3)
SW-6A         $ 2,446,920.000             (2)
SW-6B         $ 2,446,920.000             (3)
SW-7A         $ 2,240,247.500             (2)
SW-7B         $ 2,240,247.500             (3)
SW-8A         $ 2,225,376.500             (2)
SW-8B         $ 2,225,376.500             (3)
SW-9A         $ 2,546,917.500             (2)
SW-9B         $ 2,546,917.500             (3)
SW-10A        $ 2,838,519.000             (2)
SW-10B        $ 2,838,519.000             (3)
SW-11A        $ 2,942,088.500             (2)
SW-11B        $ 2,942,088.500             (3)
SW-12A        $ 2,945,014.000             (2)
SW-12B        $ 2,945,014.000             (3)
SW-13A        $ 2,802,585.000             (2)
SW-13B        $ 2,802,585.000             (3)
SW-14A        $ 2,655,808.500             (2)
SW-14B        $ 2,655,808.500             (3)
SW-15A        $ 2,471,671.500             (2)
SW-15B        $ 2,471,671.500             (3)
SW-16A        $ 2,323,025.500             (2)
SW-16B        $ 2,323,025.500             (3)
SW-17A        $ 2,191,699.000             (2)
SW-17B        $ 2,191,699.000             (3)
</TABLE>

                                       -2-

<PAGE>

<TABLE>
<S>      <C>                         <C>
SW-18A        $ 2,038,308.500             (2)
SW-18B        $ 2,038,308.500             (3)
SW-19A        $ 1,879,721.500             (2)
SW-19B        $ 1,879,721.500             (3)
SW-20A        $ 1,843,171.500             (2)
SW-20B        $ 1,843,171.500             (3)
SW-21A        $ 2,031,491.500             (2)
SW-21B        $ 2,031,491.500             (3)
SW-22A        $ 2,406,052.500             (2)
SW-22B        $ 2,406,052.500             (3)
SW-23A        $ 3,123,596.500             (2)
SW-23B        $ 3,123,596.500             (3)
SW-24A        $ 3,569,794.500             (2)
SW-24B        $ 3,569,794.500             (3)
SW-25A        $ 3,269,133.500             (2)
SW-25B        $ 3,269,133.500             (3)
SW-26A        $ 2,657,822.000             (2)
SW-26B        $ 2,657,822.000             (3)
SW-27A        $ 2,223,201.500             (2)
SW-27B        $ 2,223,201.500             (3)
SW-28A        $ 1,968,263.000             (2)
SW-28B        $ 1,968,263.000             (3)
SW-29A        $ 1,863,934.500             (2)
SW-29B        $ 1,863,934.500             (3)
SW-30A        $ 1,749,580.000             (2)
SW-30B        $ 1,749,580.000             (3)
SW-31A        $ 1,627,227.500             (2)
SW-31B        $ 1,627,227.500             (3)
SW-32A        $ 1,588,069.000             (2)
SW-32B        $ 1,588,069.000             (3)
SW-33A        $ 1,730,123.500             (2)
SW-33B        $ 1,730,123.500             (3)
SW-34A        $ 1,856,682.000             (2)
SW-34B        $ 1,856,682.000             (3)
SW-35A        $ 1,933,159.000             (2)
SW-35B        $ 1,933,159.000             (3)
SW-36A        $ 1,993,503.500             (2)
SW-36B        $ 1,993,503.500             (3)
SW-37A        $ 1,978,038.000             (2)
SW-37B        $ 1,978,038.000             (3)
SW-38A        $ 2,037,114.000             (2)
SW-38B        $ 2,037,114.000             (3)
SW-39A        $ 3,074,562.500             (2)
SW-39B        $ 3,074,562.500             (3)
SW-40A        $ 4,811,317.500             (2)
</TABLE>

                                       -3-

<PAGE>

<TABLE>
<S>      <C>                         <C>
SW-40B        $ 4,811,317.500             (3)
SW-41A        $ 4,617,714.500             (2)
SW-41B        $ 4,617,714.500             (3)
SW-42A        $ 3,745,143.000             (2)
SW-42B        $ 3,745,143.000             (3)
SW-43A        $ 3,044,205.500             (2)
SW-43B        $ 3,044,205.500             (3)
SW-44A        $ 2,608,342.000             (2)
SW-44B        $ 2,608,342.000             (3)
SW-45A        $ 2,533,483.500             (2)
SW-45B        $ 2,533,483.500             (3)
SW-46A        $ 2,466,448.500             (2)
SW-46B        $ 2,466,448.500             (3)
SW-47A        $ 2,430,950.500             (2)
SW-47B        $ 2,430,950.500             (3)
SW-48A        $ 2,413,524.500             (2)
SW-48B        $ 2,413,524.500             (3)
SW-49A        $ 2,177,189.000             (2)
SW-49B        $ 2,177,189.000             (3)
SW-50A        $ 1,871,265.000             (2)
SW-50B        $ 1,871,265.000             (3)
SW-51A        $ 1,569,308.500             (2)
SW-51B        $ 1,569,308.500             (3)
SW-52A        $ 5,196,790.000             (2)
SW-52B        $ 5,196,790.000             (3)
SW-53A        $ 1,003,066.500             (2)
SW-53B        $ 1,003,066.500             (3)
SW-54A        $   857,203.000             (2)
SW-54B        $   857,203.000             (3)
SW-55A        $   765,066.500             (2)
SW-55B        $   765,066.500             (3)
SW-56A        $   748,414.000             (2)
SW-56B        $   748,414.000             (3)
SW-57A        $ 8,715,113.500             (2)
SW-57B        $ 8,715,113.500             (3)
SWR                          (4)          (4)
</TABLE>

(1)  The interest rate on the Class SW-Z Interest shall be a per annum rate
     equal to the Net WAC.

(2)  For any Distribution Date, the interest rate on each SWAP REMIC Regular
     Interest ending with the designation "A" shall be a per annum rate equal to
     2 times the Net WAC, subject to a maximum rate of 2 times the REMIC Swap
     Rate for such Distribution Date.

                                       -4-
<PAGE>

(3)  For any Distribution Date, the interest rate on each SWAP REMIC Regular
     Interest ending with the designation "B" shall be a per annum rate equal to
     the greater of (x) the excess, if any, of (i) 2 times the Net WAC over (ii)
     2 times the REMIC Swap Rate for such Distribution Date and (y) 0.00%.

(4)  The Class SWR Interest shall have no principal amount and shall bear no
     interest.

THE LOWER TIER REMIC

The following table sets forth the designations, initial principal balances,
interest rates and Classes of Corresponding Certificates for each interest in
the Lower Tier REMIC:

<TABLE>
<CAPTION>
         Initial                Class(es) of
        Principal   Interest   Corresponding
Class    Balance      Rate      Certificates
-----   ---------   --------   -------------
<S>     <C>         <C>        <C>
LTA-1      (1)         (3)         A-1, R
LTA-2      (1)         (3)          A-2
LTA-3      (1)         (3)          A-3
LTM-1      (1)         (3)          M-1
LTM-2      (1)         (3)          M-2
LTM-3      (1)         (3)          M-3
LTM-4      (1)         (3)          M-4
LTM-5      (1)         (3)          M-5
LTM-6      (1)         (3)          M-6
LTB-1      (1)         (3)          B-1
LTB-2      (1)         (3)          B-2
LTB-3      (1)         (3)          B-3
LTX        (2)         (3)          N/A
LT-IO      (4)         (4)          N/A
LTR        (5)         (5)          N/A
</TABLE>

(1)  The initial principal balance of each of these Lower Tier REMIC Regular
     Interests shall equal 1/2 of the initial Certificate Principal Balance of
     its Corresponding Certificates.

(2)  The initial principal balance of the Class LTX Interest shall equal the
     excess of (i) the aggregate Cut-off Date Principal Balance of the Mortgage
     Loans over (ii) the initial principal balance of the Lower Tier REMIC
     Marker Interests.

(3)  For each Distribution Date, the interest rate for each of the Lower Tier
     REMIC Regular Interests (other than the Class LT-IO Interest) shall be a
     per annum rate (but not less than zero) equal to the product of (i) the
     weighted average of the interest rates on the SWAP REMIC Regular Interests
     for such Distribution Date and (ii) a fraction the numerator of which is 30
     and the denominator of which is the actual number of days in the Accrual
     Period for the LIBOR Certificates, provided however, that for any
     Distribution Date on which the Class LT-IO Interest is entitled to a
     portion of interest accruals on a SWAP REMIC Regular Interest ending with a
     designation "A" as described in footnote 4 below, such weighted average
     shall be computed by first subjecting the rate on such SWAP REMIC Regular
     Interest to a cap equal to Swap LIBOR for such Distribution Date.

                                      -5-

<PAGE>

(4)  The Class LT-IO Interest is an interest-only class that does not have a
     principal balance. For only those Distribution Dates for Accrual Periods
     listed in the first column of the table below, the Class LT-IO Interest
     shall be entitled to interest accrued on each SWAP REMIC Regular Interest
     listed in the second column below at a per annum rate equal to the excess,
     if any, of (i) the interest rate for such SWAP REMIC Regular Interest for
     such Accrual Period over (ii) Swap LIBOR for such Accrual Period.

<TABLE>
<CAPTION>
Distribution Date
for Accrual Periods   SWAP REMIC Regular Interest
-------------------   ---------------------------
<S>                   <C>
       12                     Class SW-1A
       12-13                  Class SW-2A
       12-14                  Class SW-3A
       12-15                  Class SW-4A
       12-16                  Class SW-5A
       12-17                  Class SW-6A
       12-18                  Class SW-7A
       12-19                  Class SW-8A
       12-20                  Class SW-9A
       12-21                  Class SW-10A
       12-22                  Class SW-11A
       12-23                  Class SW-12A
       12-24                  Class SW-13A
       12-25                  Class SW-14A
       12-26                  Class SW-15A
       12-27                  Class SW-16A
       12-28                  Class SW-17A
       12-29                  Class SW-18A
       12-30                  Class SW-19A
       12-31                  Class SW-20A
       12-32                  Class SW-21A
       12-33                  Class SW-22A
       12-34                  Class SW-23A
       12-35                  Class SW-24A
       12-36                  Class SW-25A
       12-37                  Class SW-26A
       12-38                  Class SW-27A
       12-39                  Class SW-28A
       12-40                  Class SW-29A
       12-41                  Class SW-30A
       12-42                  Class SW-31A
       12-43                  Class SW-32A
       12-44                  Class SW-33A
       12-45                  Class SW-34A
       12-46                  Class SW-35A
       12-47                  Class SW-36A
       12-48                  Class SW-37A
       12-49                  Class SW-38A
       12-50                  Class SW-39A
       12-51                  Class SW-40A
       12-52                  Class SW-41A
       12-53                  Class SW-42A
       12-54                  Class SW-43A
       12-55                  Class SW-44A
       12-56                  Class SW-45A
       12-57                  Class SW-46A
       12-58                  Class SW-47A
</TABLE>

                                      -6-

<PAGE>

<TABLE>
<S>                   <C>
       12-59                  Class SW-48A
       12-60                  Class SW-49A
       12-61                  Class SW-50A
       12-62                  Class SW-51A
       12-63                  Class SW-52A
       12-64                  Class SW-53A
       12-65                  Class SW-54A
       12-66                  Class SW-55A
       12-67                  Class SW-56A
       12-68                  Class SW-57A
</TABLE>

(5)  The Class LTR Interest shall have no principal amount and shall bear no
     interest.

UPPER TIER REMIC

The following table sets forth the designation, the initial principal balance,
the interest rate and Class of Related Certificates for each of the interests in
the Upper Tier REMIC.

<TABLE>
<CAPTION>
                                   Initial
                                  Principal   Interest        Class of
Class                              Balance      Rate     Related Certificates
-----                             ---------   --------   --------------------
<S>                               <C>         <C>        <C>
UTA-1                                (1)         (2)              A-1
UTA-2                                (1)         (2)              A-2
UTA-3                                (1)         (2)              A-3
UTM-1                                (1)         (2)              M-1
UTM-2                                (1)         (2)              M-2
UTM-3                                (1)         (2)              M-3
UTM-4                                (1)         (2)              M-4
UTM-5                                (1)         (2)              M-5
UTM-6                                (1)         (2)              M-6
UTB-1                                (1)         (2)              B-1
UTB-2                                (1)         (2)              B-2
UTB-3                                (1)         (2)              B-3
Uncertificated Class C Interest      (3)         (3)              N/A
UT-IO                                (4)         (4)              N/A
Residual Interest                    (1)         (2)              R
</TABLE>

(1)  The initial principal balance of each of these REMIC Regular Interests and
     the Residual Interest shall equal the initial principal balance of its
     Class of Related Certificates.

(2)  The interest rates on each of these REMIC Regular Interests and the
     Residual Interest shall be an annual rate equal to the Pass-Through Rate
     for the Class of Related Certificates, provided that in lieu of the
     applicable Available Funds Cap set forth in the definition of an applicable
     Pass-Through Rate, the applicable Upper Tier REMIC Net WAC Cap shall be
     used.

(3)  The Uncertificated Class C Interest shall have an initial principal balance
     equal to the initial Overcollateralization Amount. The Uncertificated Class
     C Interest shall accrue interest on a notional balance set forth in the
     definition of Class C Current Interest at a rate equal to the Class C
     Distributable Interest Rate. The Uncertificated Class C Interest shall be
     represented by the Class C Certificates.

                                      -7-

<PAGE>

(4)  The Class UT-IO Interest shall have no principal amount and will not have
     an interest rate, but will be entitled to 100% of the interest accrued with
     respect to the Class LT-IO Interest. The Class UT-IO Interest shall be
     represented by the Class C Certificates.

THE CERTIFICATES

     The following table sets forth (or describes) the Class designation,
initial Certificate Principal Balance or initial notional amount, integral
dollar multiples in excess thereof (except that one Certificate of each Class
may be issued in a different amount which must be in excess of the applicable
minimum dollar denomination) and minimum denomination for each Class of
Certificates comprising interests in the Trust Fund created hereunder.

<TABLE>
<CAPTION>
              Initial Certificate Principal   Integral Multiples         Minimum
   Class       Balance or Initial Notional       in Excess of        Denominations or
Designation               Amount                    Minimum        Percentage Interest
-----------   -----------------------------   ------------------   -------------------
<S>           <C>                             <C>                  <C>
Class A-1             $208,988,000                  $1.00               $25,000.00
Class A-2             $ 40,118,000                  $1.00               $25,000.00
Class A-3             $ 62,277,000                  $1.00               $25,000.00
Class R               $        100                    N/A               $      100
Class M-1             $  7,771,000                  $1.00               $25,000.00
Class M-2             $  7,065,000                  $1.00               $25,000.00
Class M-3             $  3,886,000                  $1.00               $25,000.00
Class M-4             $  3,885,000                  $1.00               $25,000.00
Class M-5             $  3,180,000                  $1.00               $25,000.00
Class M-6             $  2,826,000                  $1.00               $25,000.00
Class B-1             $  2,649,000                  $1.00               $25,000.00
Class B-2             $  2,296,000                  $1.00               $25,000.00
Class B-3             $  1,589,000                  $1.00               $25,000.00
Class P                           (1)                   1%                      10%
Class C                           (2)                   1%                      10%
</TABLE>

----------
(1)  The Class P Certificates shall not have minimum dollar denominations or
     Certificate Principal Balance and shall be issued in a minimum percentage
     interest of 10% and an aggregate percentage interest of 100%. The Class P
     Certificates will be entitled to receive Prepayment Charges on the
     Prepayment Charge Mortgage Loans.

(2)  The Class C Certificates shall not have minimum dollar denominations as the
     Certificate Principal Balance thereof shall vary over time as described
     herein and shall be issued in a minimum percentage interest of 10% and an
     aggregate percentage interest of 100%.

     As of the Cut-off Date, the Mortgage Loans had an aggregate Stated
Principal Balance of $353,242,663.66.

     In consideration of the mutual agreements herein contained, the Depositor,
the Trustee, the Securities Administrator and the Master Servicer hereby agree
as follows:

                                      -8-
<PAGE>

                                    ARTICLE I
                                   DEFINITIONS

     Whenever used in this Agreement, the following words and phrases, unless
otherwise expressly provided or unless the context otherwise requires, shall
have the meanings specified in this Article.

     Accepted Master Servicing Practices: With respect to any Mortgage Loan, as
applicable, either (i) those customary mortgage master servicing practices of
prudent mortgage servicing institutions that master service mortgage loans of
the same type and quality as such Mortgage Loan in the jurisdiction where the
related Mortgaged Property is located, to the extent applicable to the Trustee
or the Master Servicer (except in its capacity as successor to a Servicer), or
(ii) as provided herein, but in no event below the standard set forth in clause
(i).

     Accountant's Attestation: The accountant's report as required by Section
3.17 hereto.

     Account: The Master Servicer Collection Account, Distribution Account and
any Collection Account as the context may require.

     Accrual Period: With respect to the Certificates, their Corresponding REMIC
Regular Interests and the Lower Tier REMIC Interests and a Distribution Date,
the period from and including the preceding Distribution Date (or from the
Closing Date in the case of the first Distribution Date) to and including the
day prior to such Distribution Date and with respect to the SWAP REMIC Regular
Interests and any Distribution Date, the calendar month immediately preceding
the month in which such Distribution Date occurs. All calculations of interest
with respect to the Certificates, their Corresponding REMIC Regular Interests
and the Lower Tier REMIC Interests will be made on the basis of the actual
number of days elapsed in the related Accrual Period and a 360 day year and all
calculations of interest on the SWAP REMIC Regular Interests will be made on the
basis of a 360-day year consisting of twelve 30-day months.

     Additional Disclosure Notification: As defined in Section 3.18(b).

     Additional Form 10-D Disclosure: As defined in Section 3.18(e).

     Additional Form 10-K Disclosure: As defined in Section 3.18(h).

     Adjustment Date: With respect to a Mortgage Loan, generally the first day
of the month or months specified in the related mortgage note.

     Advance: The aggregate of the advances required to be made by the Master
Servicer pursuant to Section 6.04, the amount of any such advances being equal
to the sum of the aggregate amount of all payments of principal and interest
(or, with respect to the interest-only Mortgage Loans, payments of scheduled
interest) (net of the Servicing Fee) on the related Mortgage Loans that were due
during the applicable Due Period and not received as of the close of business on
the related Determination Date (based on the Minimum Payment for such Mortgage
Loan), except as provided in Section 6.04 hereof, less the aggregate amount of
any such Delinquent payments that a Servicer has determined would constitute a
Non-Recoverable Advance were an advance to be made with respect thereto;
provided, however, that with respect to (i) any Mortgage Loan that is 150 days
delinquent or more (whether or not the Mortgage Loan has been converted to an
REO Property), (ii) shortfalls in principal and interest due to

                                       -9-

<PAGE>

bankruptcy proceedings, the application of the Relief Act or similar laws or
permitted modifications and (iii) the principal portion of any amount paid on a
Balloon Loan, there will be no obligation to make advances and, provided
further, however, that with respect to any Mortgage Loan that has been converted
to an REO Property which is less than 150 days delinquent, the obligation to
make Advances shall only be to payments of interest (subject to the exceptions
described above and net of the Servicing Fees), to be calculated after taking
into account rental income.

     Adverse REMIC Event: As defined in Section 9.12(g).

     Affiliate: As to any Person, any other Person controlling, controlled by or
under common control with such Person. "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. "Controlled" and
"Controlling" have meanings correlative to the foregoing. The Master Servicer
may conclusively presume that a Person is not an Affiliate of another Person
unless a Responsible Officer of the Master Servicer has actual knowledge to the
contrary.

     Agreement: This Pooling and Servicing Agreement, dated as of July 1, 2007,
by and among the Depositor, the Master Servicer, the Securities Administrator
and the Trustee, including the exhibits hereto, and all amendments hereof and
supplements hereto.

     Annual Statement of Compliance: The statement of compliance as required by
Section 3.16 hereto.

     Applicable Credit Rating: For any long-term deposit or security, a credit
rating of "AAA" in the case of S&P or "Aaa" in the case of Moody's. For any
short-term deposit or security, a rating of "A-l+" in the case of S&P or "P-1"
in the case of Moody's.

     Applicable Servicing Agreement: With respect to (i) Residential Funding
Company, LLC, the Standard Terms and Provisions of Sale and Servicing Agreement,
dated as of February 1, 2007, between Residential Funding Company, LLC and
Merrill Lynch Mortgage Lending, Inc., as modified by the Assignment, Assumption
and Recognition Agreement, dated as of July 1, 2007, among Merrill Lynch
Mortgage Lending, the Depositor and Residential Funding Company, LLC, (ii)
IndyMac Bank, F.S.B., the Master Seller's Warranties and Servicing Agreement,
dated as of May 1, 2006, between IndyMac Bank, F.S.B. and Merrill Lynch Mortgage
Lending, as modified by the Assignment, Assumption and Recognition Agreement,
dated as of July 1, 2007, among Merrill Lynch Mortgage Lending, the Depositor
and IndyMac Bank, F.S.B. and (iii) Central Mortgage Company, the Servicing
Agreement, dated as of July 1, 2007, between the Depositor and Central Mortgage
Company.

     Applied Realized Loss Amount: With respect to any class of Certificates and
as to any Distribution Date, the sum of the Realized Losses with respect to the
Mortgage Loans which have been applied in reduction of the Certificate Principal
Balance of such class.

     Appraised Value: For any Mortgaged Property related to a Mortgage Loan, the
amount set forth as the appraised value of such Mortgaged Property in an
appraisal made for the mortgage originator in connection with its origination of
the related Mortgage Loan.

     Assessment of Compliance: An officer's assessment of its compliance with
the Relevant Servicing Criteria during the preceding calendar year as required
by Rules 13a-18 and 15d-18 of the Exchange Act and Item 1122 of Regulation AB.

                                      -10-

<PAGE>

     Assignment: An assignment of the Mortgage, notice of transfer or equivalent
instrument, in recordable form, sufficient under the laws of the jurisdiction
wherein the related Mortgaged Property is located to reflect of record the sale
of the Mortgage Loan to the Trustee for the benefit of Certificateholders, which
assignment, notice of transfer or equivalent instrument may be in the form of
one or more blanket assignments covering Mortgages secured by Mortgaged
Properties located in the same county, if permitted by law and accompanied by an
Opinion of Counsel to that effect.

     Auction: The one-time auction conducted by the Securities Administrator, as
described in Section 10.01(b) hereof.

     Available Funds Cap: With respect to a Distribution Date, the per annum
rate equal to the product of (i) 12, (ii) the quotient of (x) the total
scheduled interest on the Mortgage Loans based on the Net Mortgage Rates in
effect on the related Due Date, less any Net Swap Payments or Swap Termination
Payments (other than Defaulted Swap Termination Payments) owed to the Swap
Counterparty for such Distribution Date and (y) the aggregate Stated Principal
Balance of the Mortgage Loans as of the first day of the related Accrual Period
(or, in the case of the first Distribution Date, as of the Cut-off Date) and
(iii) a fraction, the numerator of which is 30, and the denominator of which is
the actual number of days in the related Accrual Period.

     Back-Up Certification: As defined in Section 3.18(k).

     Balloon Loan: A Mortgage Loan having an original term to stated maturity of
approximately 15 or 30 years which provides for level monthly payments of
principal and interest based on a 30-, 40- or 50-year amortization schedule,
with a balloon payment of the remaining outstanding principal balance due on
such Mortgage Loan at its stated maturity.

     Bankruptcy Code: The United States Bankruptcy Code, as amended as codified
in 11 U.S.C. Sections 101-1330.

     Book-Entry Certificates: Any of the Certificates that shall be registered
in the name of the Depository or its nominee, the ownership of which is
reflected on the books of the Depository or on the books of a Person maintaining
an account with the Depository (directly, as a Depository Participant, or
indirectly, as an indirect participant in accordance with the rules of the
Depository and as described in Section 5.02 hereof). On the Closing Date, the
Certificates (other than the Class R Certificate) shall be Book-Entry
Certificates.

     Business Day: Any day other than (i) a Saturday or a Sunday or (ii) a day
on which banking institutions in the jurisdiction in which the Trustee, the
Master Servicer, the Servicers or the Securities Administrator are authorized or
obligated by law or executive order to be closed

     Cap Contract Counterparty: Morgan Stanley Capital Services Inc., with whom
the Securities Administrator, on behalf of the Issuing Entity, entered into the
Corridor Contract.

     Certificate: Any mortgage pass-through certificate issued pursuant to this
Agreement evidencing a beneficial ownership interest in that portion of the
Trust Fund related to the Mortgage Loans, signed and countersigned by the
Securities Administrator.

                                      -11-

<PAGE>

     Certificate Owner: With respect to each Book-Entry Certificate, any
beneficial owner thereof.

     Certificate Register: The register maintained pursuant to Section 5.02
hereof.

     Certificateholder or Holder: The Person in whose name a Regular Certificate
is registered in the Certificate Register, except that a Disqualified
Organization or non-U.S. Person shall not be a Holder of the Class R Certificate
for any purpose hereof.

     Certification Parties: As defined in Section 3.18(k).

     Certifying Person: As defined in Section 3.18(k).

     Certificate Principal Balance: As to any Certificate and as of any
Distribution Date, the Initial Certificate Principal Balance of such Certificate
(a) less the sum of (1) all amounts distributed with respect to such Certificate
in reduction of the Certificate Principal Balance thereof on previous
Distribution Dates pursuant to Section 6.01, and (2) any Realized Loss Amounts
allocated to such Certificate on previous Distribution Dates pursuant to Section
6.01(j), and (b) plus any Deferred Interest allocated to such Certificate on
previous Distribution Dates. On each Distribution Date, after all distributions
of principal on such Distribution Date, a portion of the Class C Interest Carry
Forward Amount in an amount equal to the excess of the Overcollateralization
Amount on such Distribution Date over the Overcollateralization Amount as of the
preceding Distribution Date (or, in the case of the first Distribution Date, the
initial Overcollateralization Amount (based on the Stated Principal Balance of
the Mortgage Loans as of the Cut-Off Date)) will be added to the aggregate
Certificate Principal Balance of the Class C Certificates (on a pro rata basis).
Notwithstanding the immediately preceding sentence, however, to the extent any
excess referred to in the immediately preceding sentence is attributable to
distributions of proceeds of the Swap Agreement, such sentence shall be applied
by substituting "Class C Unpaid Realized Loss Amount" for "Class C Interest
Carry Forward Amount". Notwithstanding the foregoing on any Distribution Date
relating to a Due Period in which a Subsequent Recovery has been received by the
applicable Servicer, the Certificate Principal Balance of any Class of
Certificates then outstanding for which any Realized Loss Amount has been
allocated will be increased, in order of seniority, by an amount equal to the
lesser of (i) the Unpaid Realized Loss Amount for such Class of Certificates and
(ii) the total of any Subsequent Recovery distributed on such date to the
Certificateholders (reduced by the amount of the increase in the Certificate
Principal Balance of any more senior Class of Certificates pursuant to this
sentence on such Distribution Date).

     Class: Collectively, Certificates which have the same priority of payment
and bear the same class designation and the form of which is identical except
for variation in the Percentage Interest evidenced thereby.

     Class A-1 Certificate: Any Certificate designated as a "Class A-1
Certificate" on the face thereof substantially in the form annexed hereto as
Exhibit A-1, executed by the Securities Administrator and authenticated and
delivered by the Securities Administrator, representing the right to
distributions as set forth herein and therein.

                                      -12-

<PAGE>

     Class A-1 Certificate Principal Balance: As of any date of determination,
the aggregate Certificate Principal Balance of the Class A-1 Certificates.

     Class A-1 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class A-1 Pass-Through Rate on
the Class A-1 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or a Class A-1 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class A-1 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class A-1
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class A-1 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class A-1 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class A-1 Certificates with respect to
interest on such prior Distribution Dates and (2) interest on such excess (to
the extent permitted by applicable law) at the Class A-1 Pass-Through Rate for
the related Accrual Period. The Class A-1 Interest Carry Forward Amount shall
not include any amounts attributable to an allocation of Deferred Interest.

     Class A-1 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 0.2500% per annum, and (ii) after the Initial
Optional Termination Date, 0.5000% per annum.

     Class A-1 Pass-Through Rate: For the first Distribution Date, 5.600% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class A-1 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

     Class A-2 Certificate: Any Certificate designated as a "Class A-2
Certificate" on the face thereof, in the form of Exhibit A-1 hereto,
representing the right to distributions as set forth herein.

     Class A-2 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class A-2 Pass-Through Rate on
the Class A-2 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or a Class A-2 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class A-2 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class A-2
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class A-2 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class A-2 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class A-2

                                      -13-

<PAGE>

Certificates with respect to interest on such prior Distribution Dates and (2)
interest on such excess (to the extent permitted by applicable law) at the Class
A-2 Pass-Through Rate for the related Accrual Period. The Class A-2 Interest
Carry Forward Amount shall not include any amounts attributable to an allocation
of Deferred Interest.

     Class A-2 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 0.4500% per annum, and (ii) after the Initial
Optional Termination Date, 0.9000% per annum.

     Class A-2 Pass-Through Rate: For the first Distribution Date, 5.800% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class A-2 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

     Class A-3 Certificate: Any Certificate designated as a "Class A-3
Certificate" on the face thereof, in the form of Exhibit A-1 hereto,
representing the right to distributions as set forth herein.

     Class A-3 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class A-3 Pass-Through Rate on
the Class A-3 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or a Class A-3 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class A-3 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class A-3
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class A-3 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class A-3 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class A-3 Certificates with respect to
interest on such prior Distribution Dates and (2) interest on such excess (to
the extent permitted by applicable law) at the Class A-3 Pass-Through Rate for
the related Accrual Period. The Class A-3 Interest Carry Forward Amount shall
not include any amounts attributable to an allocation of Deferred Interest.

     Class A-3 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 0.4000% per annum, and (ii) after the Initial
Optional Termination Date, 0.8000% per annum.

     Class A-3 Pass-Through Rate: For the first Distribution Date, 5.750% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class A-3 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

     Class B Certificate: Any one of the Class B-1, Class B-2 or Class B-3
Certificates as designated on the face thereof substantially in the form annexed
hereto as Exhibit A-2, executed

                                      -14-

<PAGE>

by the Securities Administrator and authenticated and delivered by the
Securities Administrator, representing the right to distributions as set forth
herein and therein.

     Class B Certificateholder: Any Holder of a Class B Certificate.

     Class B-1 Certificate: Any Certificate designated as "Class B-1 Certificate
"on the face thereof in the form of Exhibit A-2 hereto, representing the right
to distributions as set forth herein.

     Class B-1 Certificate Principal Balance: As of any date of determination,
the aggregate Certificate Principal Balance of the Class B-1 Certificates.

     Class B-1 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class B-1 Pass-Through Rate on
the Class B-1 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or Class B-1 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class B-1 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class B-1
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class B-1 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class B-1 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class B-1 Certificates with respect to
interest on such prior Distribution Dates and (2) interest on such excess (to
the extent permitted by applicable law) at the Class B-1 Pass-Through Rate for
the related Accrual Period. The Class B-1 Interest Carry Forward Amount shall
not include any amounts attributable to an allocation of Deferred Interest.

     Class B-1 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 1.5000% per annum, and (ii) after the Initial
Optional Termination Date, 2.2500% per annum.

     Class B-1 Pass-Through Rate: For the first Distribution Date, 6.850% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class B-1 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

     Class B-1 Principal Distribution Amount: With respect to any Distribution
Date on or after the Stepdown Date, 100% of the Principal Distribution Amount if
the aggregate Certificate Principal Balance of the Senior Certificates and Class
M Certificates has been reduced to zero and a Stepdown Trigger Event exists, or,
as long as a Stepdown Trigger Event does not exist, the excess of (1) the sum of
(A) the Certificate Principal Balance of the Senior Certificates and the
Certificate Principal Balance of the Class M-1, Class M-2, Class M-3, Class M-4,
Class M-5 and Class M-6 Certificates (after taking into account distributions of
the related Principal Distribution Amount for such Distribution Date and after
the allocation of Deferred Interest, if any, for each Distribution Date) and (B)
the Certificate Principal Balance of the Class B-1

                                      -15-

<PAGE>

Certificates immediately prior to such Distribution Date over (2) the lesser of
(A) (i) for any Distribution Date on or prior to July 2013, 92.500% of the
aggregate Stated Principal Balance of the Mortgage Loans as of such Distribution
Date and (ii) for any Distribution Date after July 2013, 94.000% of the
aggregate Stated Principal Balance of the Mortgage Loans as of such Distribution
Date and (B) the excess of the aggregate Stated Principal Balance of the
Mortgage Loans as of such Distribution Date over the Minimum Required
Overcollateralization Amount. Notwithstanding the above, (1) on any Distribution
Date prior to the Stepdown Date on which the aggregate Certificate Principal
Balance of the Senior Certificates and Class M Certificates has been reduced to
zero, the Class B-1 Principal Distribution Amount will equal the lesser of (A)
the outstanding Certificate Principal Balance of the Class B-1 Certificates and
(B) 100% of the Principal Distribution Amount remaining after any distributions
on the Senior Certificates and Class M Certificates and (2) in no event will the
Class B-1 Principal Distribution Amount with respect to any Distribution Date
exceed the Certificate Principal Balance of the Class B-1 Certificates.

     Class B-2 Certificate: Any Certificate designated as "Class B-2 Certificate
"on the face thereof in the form of Exhibit A-2 hereto, representing the right
to distributions as set forth herein.

     Class B-2 Certificate Principal Balance: As of any date of determination,
the aggregate Certificate Principal Balance of the Class B-2 Certificates.

     Class B-2 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class B-2 Pass-Through Rate on
the Class B-2 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or Class B-2 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class B-2 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class B-2
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class B-2 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class B-2 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class B-2 Certificates with respect to
interest on such prior Distribution Dates and (2) interest on such excess (to
the extent permitted by applicable law) at the Class B-2 Pass-Through Rate for
the related Accrual Period. The Class B-2 Interest Carry Forward Amount shall
not include any amounts attributable to an allocation of Deferred Interest.

     Class B-2 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 1.5000% per annum, and (ii) after the Initial
Optional Termination Date, 2.2500% per annum.

     Class B-2 Pass-Through Rate: For the first Distribution Date, 6.850% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class B-2 Margin,

                                      -16-

<PAGE>

(2) the Available Funds Cap for such Distribution Date and (3) the Maximum Rate
Cap for such Distribution Date.

     Class B-2 Principal Distribution Amount: With respect to any Distribution
Date on or after the Stepdown Date, 100% of the Principal Distribution Amount if
the aggregate Certificate Principal Balance of the Class A, Class M and Class
B-1 Certificates has been reduced to zero and a Stepdown Trigger Event exists,
or, as long as a Stepdown Trigger Event does not exist, the excess of (1) the
sum of (A) the Certificate Principal Balance of the Senior Certificates and the
Certificate Principal Balance of the Class M-1, Class M-2, Class M-3, Class M-4,
Class M-5, Class M-6 and Class B-1 Certificates (after taking into account
distributions of the related Principal Distribution Amount for such Distribution
Date and after the allocation of Deferred Interest, if any, for each
Distribution Date) and (B) the Certificate Principal Balance of the Class B-2
Certificates immediately prior to such Distribution Date over (2) the lesser of
(A) (i) for any Distribution Date on or prior to July 2013, 94.125% of the
aggregate Stated Principal Balance of the Mortgage Loans as of such Distribution
Date and (ii) for any Distribution Date after July 2013, 95.300% of the
aggregate Stated Principal Balance of the Mortgage Loans as of such Distribution
Date and (B) the excess of the aggregate Stated Principal Balance of the
Mortgage Loans as of such Distribution Date over the Minimum Required
Overcollateralization Amount. Notwithstanding the above, (1) on any Distribution
Date prior to the Stepdown Date on which the aggregate Certificate Principal
Balance of the Class A, Class M and Class B-1 Certificates has been reduced to
zero, the Class B-2 Principal Distribution Amount will equal the lesser of (A)
the outstanding Certificate Principal Balance of the Class B-2 Certificates and
(B) 100% of the Principal Distribution Amount remaining after any distributions
on the Class A, Class M and Class B-1 Certificates and (2) in no event will the
Class B-2 Principal Distribution Amount with respect to any Distribution Date
exceed the Certificate Principal Balance of the Class B-2 Certificates.

     Class B-3 Certificate: Any Certificate designated as "Class B-3 Certificate
"on the face thereof in the form of Exhibit A-2 hereto, representing the right
to distributions as set forth herein.

     Class B-3 Certificate Principal Balance: As of any date of determination,
the aggregate Certificate Principal Balance of the Class B-3 Certificates.

     Class B-3 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class B-3 Pass-Through Rate on
the Class B-3 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or Class B-3 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class B-3 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class B-3
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class B-3 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class B-3 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class B-3

                                      -17-

<PAGE>

Certificates with respect to interest on such prior Distribution Dates and (2)
interest on such excess (to the extent permitted by applicable law) at the Class
B-3 Pass-Through Rate for the related Accrual Period. The Class B-3 Interest
Carry Forward Amount shall not include any amounts attributable to an allocation
of Deferred Interest.

     Class B-3 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 1.5000% per annum, and (ii) after the Initial
Optional Termination Date, 2.2500% per annum.

     Class B-3 Pass-Through Rate: For the first Distribution Date, 6.850% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class B-3 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

     Class B-3 Principal Distribution Amount: With respect to any Distribution
Date on or after the Stepdown Date, 100% of the Principal Distribution Amount if
the aggregate Certificate Principal Balance of the Class A, Class M, Class B-1
and Class B-2 Certificates has been reduced to zero and a Stepdown Trigger Event
exists, or, as long as a Stepdown Trigger Event does not exist, the excess of
(1) the sum of (A) the Certificate Principal Balance of the Senior Certificates
and the Certificate Principal Balance of the Class M-1, Class M-2, Class M-3,
Class M-4, Class M-5, Class M-6, Class B-1 and Class B-2 Certificates (after
taking into account distributions of the related Principal Distribution Amount
for such Distribution Date and after the allocation of Deferred Interest, if
any, for each Distribution Date) and (B) the Certificate Principal Balance of
the Class B-3 Certificates immediately prior to such Distribution Date over (2)
the lesser of (A) (i) for any Distribution Date on or prior to July 2013,
95.250% of the aggregate Stated Principal Balance of the Mortgage Loans as of
such Distribution Date and (ii) for any Distribution Date after July 2013,
96.200% of the aggregate Stated Principal Balance of the Mortgage Loans as of
such Distribution Date and (B) the excess of the aggregate Stated Principal
Balance of the Mortgage Loans as of such Distribution Date over the Minimum
Required Overcollateralization Amount. Notwithstanding the above, (1) on any
Distribution Date prior to the Stepdown Date on which the aggregate Certificate
Principal Balance of the Class A, Class M, Class B-1 and Class B-2 Certificates
has been reduced to zero, the Class B-3 Principal Distribution Amount will equal
the lesser of (A) the outstanding Certificate Principal Balance of the Class B-3
Certificates and (B) 100% of the Principal Distribution Amount remaining after
any distributions on the Class A, Class M, Class B-1 and Class B-2 Certificates
and (2) in no event will the Class B-3 Principal Distribution Amount with
respect to any Distribution Date exceed the Certificate Principal Balance of the
Class B-3 Certificates.

     Class C Applied Realized Loss Amount: As of any Distribution Date, the sum
of all Realized Loss Amounts with respect to the Mortgage Loans which have been
applied to the reduction of the Certificate Principal Balance of the Class C
Certificates.

     Class C Certificate: Any Certificate designated as a "Class C Certificate"
on the face thereof, in the form of Exhibit A-5 hereto, representing the right
to distributions as set forth herein.

                                      -18-

<PAGE>

     Class C Certificate Principal Balance: As of any date of determination, the
aggregate Certificate Principal Balance of the Class C Certificates.

     Class C Current Interest: As of any Distribution Date, the interest accrued
during the related Accrual Period at the Class C Distributable Interest Rate on
a notional amount equal to the aggregate principal balance of the Lower Tier
REMIC Regular Interests immediately prior to such Distribution Date, plus the
interest portion of any previous distributions on such Class that is recovered
as a voidable preference by a trustee in bankruptcy, less any Prepayment
Interest Shortfalls allocated on such Distribution Date to the Class C
Certificates and less any Deferred Interest allocated on such Distribution Date
to the Class C Certificates.

     Class C Distributable Interest Rate: The excess, if any, of (a) the
weighted average of the interest rates on the Lower Tier REMIC Regular Interests
(other than the Class LT-IO Interest) over (b) two times the weighted average of
the interest rates on the Lower Tier REMIC Regular Interests (other than the
Class LT-IO Interest) (treating for purposes of this clause (b) the interest
rate on each of the Lower Tier REMIC Marker Interests as being subject to a cap
equal to the interest rate of the Corresponding REMIC Regular Interest of the
Corresponding Certificates (as adjusted, if necessary, to reflect the length of
the Accrual Period for the LIBOR Certificates) and treating the Class LTX
Interest as being capped at zero). The averages described in the preceding
sentence shall be weighted on the basis of the respective principal balances of
the Lower Tier REMIC Regular Interests immediately prior to any date of
determination.

     Class C Interest Carry Forward Amount: As of any Distribution Date, the
excess of (A) the aggregate amount of the Class C Current Interest with respect
to all prior Distribution Dates over (B) the aggregate amount actually
distributed to the Class C Certificates with respect to interest on such prior
Distribution Dates or added to the aggregate Certificate Principal Balance of
the Class C Certificates (other than amounts so added attributable to Subsequent
Recoveries or proceeds of the Swap Agreement). The Class C Interest Carry
Forward Amount shall not include any amounts attributable to an allocation of
Deferred Interest.

     Class C Unpaid Realized Loss Amount: As of any Distribution Date, the
excess of (1) the Class C Applied Realized Loss Amount over (2) the sum of (x)
all distributions in reduction of the Class C Unpaid Realized Loss Amounts on
all previous Distribution Dates and (y) all increases in the Certificate
Principal Balance of such Class C Certificates (A) pursuant to the last sentence
of the definition of "Certificate Principal Balance" or (B) attributable to
distributions of proceeds of the Swap Agreement.

     Class LT-IO Interest: An uncertificated regular interest in the Lower Tier
REMIC with the characteristics set forth in the description of the Lower Tier
REMIC in the Preliminary Statement.

     Class LTA-1 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificates and an interest rate equal to the Net
Rate.

                                      -19-

<PAGE>

     Class LTA-2 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

     Class LTA-3 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

     Class LTB-1 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

     Class LTB-2 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

     Class LTB-3 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

     Class LTX Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to the excess of (i) the aggregate
Stated Principal Balance of the Mortgage Loans as of the Cut-off Date over (ii)
the aggregate initial principal balance of the Lower Tier REMIC Marker
Interests, and with an interest rate equal to the Net Rate.

     Class LTM-1 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

     Class LTM-2 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

     Class LTM-3 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

     Class LTM-4 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

     Class LTM-5 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

     Class LTM-6 Interest: An uncertificated regular interest in the Lower Tier
REMIC with an initial principal balance equal to 1/2 of the initial principal
balance of its Corresponding Certificate and an interest rate equal to the Net
Rate.

                                      -20-

<PAGE>

     Class LTR Interest: The sole class of "residual interest" in the Lower Tier
REMIC.

     Class M Certificate: Any one of the Class M-1, Class M-2, Class M-3, Class
M-4, Class M-5 and Class M-6 Certificates as designated on the face thereof
substantially in the form annexed hereto as Exhibit A-1, executed by the
Securities Administrator and authenticated and delivered by the Securities
Administrator, representing the right to distributions as set forth herein and
therein.

     Class M Certificateholder: Any Holder of a Class M Certificate.

     Class M-1 Certificate: Any Certificate designated as a "Class M-1
Certificate" on the face thereof, in the form of Exhibit A hereto, representing
the right to distributions as set forth herein.

     Class M-1 Certificate Principal Balance: As of any date of determination,
the aggregate Certificate Principal Balance of the Class M-1 Certificates.

     Class M-1 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class M-1 Pass-Through Rate on
the Class M-1 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or Class M-1 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class M-1 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class M-1
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class M-1 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class M-1 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class M-1 Certificates with respect to
interest on such prior Distribution Dates and (2) interest on such excess (to
the extent permitted by applicable law) at the Class M-1 Pass-Through Rate for
the related Accrual Period. The Class M-1 Interest Carry Forward Amount shall
not include any amounts attributable to an allocation of Deferred Interest.

     Class M-1 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 0.6500% per annum, and (ii) after the Initial
Optional Termination Date, 0.9750% per annum.

     Class M-1 Pass-Through Rate: For the first Distribution Date, 6.000% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class M-1 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

     Class M-1 Principal Distribution Amount: With respect to any Distribution
Date on or after the Stepdown Date, 100% of the Principal Distribution Amount if
the aggregate Certificate Principal Balance of the Senior Certificates has been
reduced to zero and a Stepdown Trigger Event exists, or, as long as a Stepdown
Trigger Event does not exist, the excess of (1) the sum of

                                      -21-

<PAGE>

(A) the Certificate Principal Balance of the Senior Certificates (after taking
into account distributions of the Senior Principal Distribution Amount to the
Senior Certificates for such Distribution Date and after the allocation of
Deferred Interest, if any, for each Distribution Date) and (B) the Certificate
Principal Balance of the Class M-1 Certificates immediately prior to such
Distribution Date over (2) the lesser of (A) (i) for any Distribution Date on or
prior to July 2013, 75.875% of the aggregate Stated Principal Balance of the
Mortgage Loans as of such Distribution Date and (ii) for any Distribution Date
after July 2013, 80.700% of the aggregate Stated Principal Balance of the
Mortgage Loans as of such Distribution Date and (B) the excess of the aggregate
Stated Principal Balance of the Mortgage Loans as of such Distribution Date over
the Minimum Required Overcollateralization Amount. Notwithstanding the above,
(1) on any Distribution Date prior to the Stepdown Date on which the aggregate
Certificate Principal Balance of the Senior Certificates has been reduced to
zero, the Class M-1 Principal Distribution Amount will equal the lesser of (A)
the outstanding Certificate Principal Balance of the Class M-1 Certificates and
(B) 100% of the Principal Distribution Amount remaining after any distributions
on the Senior Certificates and (2) in no event will the Class M-1 Principal
Distribution Amount with respect to any Distribution Date exceed the Certificate
Principal Balance of the Class M-1 Certificates.

     Class M-2 Certificate: Any Certificate designated as a "Class M-2
Certificate" on the face thereof, in the form of Exhibit A hereto, representing
the right to distributions as set forth herein.

     Class M-2 Certificate Principal Balance: As of any date of determination,
the aggregate Certificate Principal Balance of the Class M-2 Certificates.

     Class M-2 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class M-2 Pass-Through Rate on
the Class M-2 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or Class M-2 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class M-2 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class M-2
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class M-2 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class M-2 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class M-2 Certificates with respect to
interest on such prior Distribution Dates and (2) interest on such excess (to
the extent permitted by applicable law) at the Class M-2 Pass-Through Rate for
the related Accrual Period. The Class M-2 Interest Carry Forward Amount shall
not include any amounts attributable to an allocation of Deferred Interest.

     Class M-2 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 0.7500% per annum, and (ii) after the Initial
Optional Termination Date, 1.1250% per annum.

                                      -22-

<PAGE>

     Class M-2 Pass-Through Rate: For the first Distribution Date, 6.100% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class M-2 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

     Class M-2 Principal Distribution Amount: With respect to any Distribution
Date on or after the Stepdown Date, 100% of the Principal Distribution Amount if
the Certificate Principal Balance of each class of Senior Certificates and Class
M-1 Certificates has been reduced to zero and a Stepdown Trigger Event exists,
or, as long as a Stepdown Trigger Event does not exist, the excess of (1) the
sum of (A) the Certificate Principal Balance of the Senior Certificates and the
Certificate Principal Balance of the Class M-1 Certificates (after taking into
account distributions of the related Principal Distribution Amount for such
Distribution Date and after the allocation of Deferred Interest, if any, for
each Distribution Date) and (B) the Certificate Principal Balance of the Class
M-2 Certificates immediately prior to such Distribution Date over (2) the lesser
of (A) (i) for any Distribution Date on or prior to July 2013, 80.875% of the
aggregate Stated Principal Balance of the Mortgage Loans as of such Distribution
Date and (ii) for any Distribution Date after July 2013, 84.700% of the
aggregate Stated Principal Balance of the Mortgage Loans as of such Distribution
Date and (B) the excess of the aggregate Stated Principal Balance of the
Mortgage Loans as of such Distribution Date over the Minimum Required
Overcollateralization Amount. Notwithstanding the above, (1) on any Distribution
Date prior to the Stepdown Date on which the aggregate Certificate Principal
Balance of the Senior Certificates and the Class M-1 Certificates has been
reduced to zero, the Class M-2 Principal Distribution Amount will equal the
lesser of (A) the outstanding Certificate Principal Balance of the Class M-2
Certificates and (B) 100% of the Principal Distribution Amount remaining after
any distributions on the Senior Certificates and Class M-1 Certificates and (2)
in no event will the Class M-2 Principal Distribution Amount with respect to any
Distribution Date exceed the Certificate Principal Balance of the Class M-2
Certificates

     Class M-3 Certificate: Any Certificate designated as a "Class M-3
Certificate" on the face thereof, in the form of Exhibit A hereto, representing
the right to distributions as set forth herein.

     Class M-3 Certificate Principal Balance: As of any date of determination,
the aggregate Certificate Principal Balance of the Class M-3 Certificates.

     Class M-3 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class M-3 Pass-Through Rate on
the Class M-3 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or Class M-3 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class M-3 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class M-3
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class M-3 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class M-3 Current
Interest with respect to all

                                      -23-
<PAGE>

prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class M-3 Certificates with respect to
interest on such prior Distribution Dates and (2) interest on such excess (to
the extent permitted by applicable law) at the Class M-3 Pass-Through Rate for
the related Accrual Period. The Class M-3 Interest Carry Forward Amount shall
not include any amounts attributable to an allocation of Deferred Interest.

     Class M-3 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 0.9000% per annum, and (ii) after the Initial
Optional Termination Date, 1.3500% per annum.

     Class M-3 Pass-Through Rate: For the first Distribution Date, 6.250% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class M-3 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

     Class M-3 Principal Distribution Amount: With respect to any Distribution
Date on or after the Stepdown Date, 100% of the Principal Distribution Amount if
the Certificate Principal Balance of each class of Class A, Class M-1 and Class
M-2 Certificates has been reduced to zero and a Stepdown Trigger Event exists,
or, as long as a Stepdown Trigger Event does not exist, the excess of (1) the
sum of (A) the Certificate Principal Balance of the Senior Certificates and the
Certificate Principal Balance of the Class M-1 and Class M-2 Certificates (after
taking into account distributions of the related Principal Distribution Amount
for such Distribution Date and after the allocation of Deferred Interest, if
any, for each Distribution Date) and (B) the Certificate Principal Balance of
the Class M-3 Certificates immediately prior to such Distribution Date over (2)
the lesser of (A) (i) for any Distribution Date on or prior to July 2013,
83.625% of the aggregate Stated Principal Balance of the Mortgage Loans as of
such Distribution Date and (ii) for any Distribution Date after July 2013,
86.900% of the aggregate Stated Principal Balance of the Mortgage Loans as of
such Distribution Date and (B) the excess of the aggregate Stated Principal
Balance of the Mortgage Loans as of such Distribution Date over the Minimum
Required Overcollateralization Amount. Notwithstanding the above, (1) on any
Distribution Date prior to the Stepdown Date on which the aggregate Certificate
Principal Balance of the Class A, Class M-1 and Class M-2 Certificates has been
reduced to zero, the Class M-3 Principal Distribution Amount will equal the
lesser of (A) the outstanding Certificate Principal Balance of the Class M-3
Certificates and (B) 100% of the Principal Distribution Amount remaining after
any distributions on the Class A, Class M-1 and Class M-2 Certificates and (2)
in no event will the Class M-3 Principal Distribution Amount with respect to any
Distribution Date exceed the Certificate Principal Balance of the Class M-3
Certificates.

     Class M-4 Certificate: Any Certificate designated as a "Class M-4
Certificate" on the face thereof, in the form of Exhibit A hereto, representing
the right to distributions as set forth herein.

     Class M-4 Certificate Principal Balance: As of any date of determination,
the aggregate Certificate Principal Balance of the Class M-4 Certificates.

     Class M-4 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class M-4 Pass-Through Rate on
the Class M-4 Certificate

                                      -24-

<PAGE>

Principal Balance as of such Distribution Date plus the portion of any previous
distributions on such Class in respect of Current Interest or Class M-4 Interest
Carry Forward Amount that is recovered as a voidable preference by a trustee in
bankruptcy, less any Prepayment Interest Shortfalls allocated on such
Distribution Date to the Class M-4 Certificates and less any Deferred Interest
allocated on such Distribution Date to the Class M-4 Certificates. For purposes
of calculating interest, principal distributions on a Distribution Date will be
deemed to have been made on the first day of the Accrual Period in which such
Distribution Date occurs.

     Class M-4 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class M-4 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class M-4 Certificates with respect to
interest on such prior Distribution Dates and (2) interest on such excess (to
the extent permitted by applicable law) at the Class M-4 Pass-Through Rate for
the related Accrual Period. The Class M-4 Interest Carry Forward Amount shall
not include any amounts attributable to an allocation of Deferred Interest.

     Class M-4 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 1.2000% per annum, and (ii) after the Initial
Optional Termination Date, 1.8000% per annum.

     Class M-4 Pass-Through Rate: For the first Distribution Date, 6.550% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class M-4 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

     Class M-4 Principal Distribution Amount: With respect to any Distribution
Date on or after the Stepdown Date, 100% of the Principal Distribution Amount if
the Certificate Principal Balance of each class of Class A, Class M-1, Class M-2
and Class M-3 Certificates has been reduced to zero and a Stepdown Trigger Event
exists, or, as long as a Stepdown Trigger Event does not exist, the excess of
(1) the sum of (A) the Certificate Principal Balance of the Senior Certificates
and the Certificate Principal Balance of the Class M-1, Class M-2 and Class M-3
Certificates (after taking into account distributions of the related Principal
Distribution Amount for such Distribution Date and after the allocation of
Deferred Interest, if any, for each Distribution Date) and (B) the Certificate
Principal Balance of the Class M-4 Certificates immediately prior to such
Distribution Date over (2) the lesser of (A) (i) for any Distribution Date on or
prior to July 2013, 86.375% of the aggregate Stated Principal Balance of the
Mortgage Loans as of such Distribution Date and (ii) for any Distribution Date
after July 2013, 89.100% of the aggregate Stated Principal Balance of the
Mortgage Loans as of such Distribution Date and (B) the excess of the aggregate
Stated Principal Balance of the Mortgage Loans as of such Distribution Date over
the Minimum Required Overcollateralization Amount. Notwithstanding the above,
(1) on any Distribution Date prior to the Stepdown Date on which the aggregate
Certificate Principal Balance of the Class A, Class M-1, Class M-2 and Class M-3
Certificates has been reduced to zero, the Class M-4 Principal Distribution
Amount will equal the lesser of (A) the outstanding Certificate Principal
Balance of the Class M-4 Certificates and (B) 100% of the Principal Distribution
Amount remaining after any distributions on the Class A, Class M-1, Class M-2
and Class M-3 Certificates and (2) in no event will the Class M-4

                                      -25-

<PAGE>

Principal Distribution Amount with respect to any Distribution Date exceed the
Certificate Principal Balance of the Class M-4 Certificates.

     Class M-5 Certificate: Any Certificate designated as a "Class M-5
Certificate" on the face thereof, in the form of Exhibit A hereto, representing
the right to distributions as set forth herein.

     Class M-5 Certificate Principal Balance: As of any date of determination,
the aggregate Certificate Principal Balance of the Class M-5 Certificates.

     Class M-5 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class M-5 Pass-Through Rate on
the Class M-5 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or Class M-5 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class M-5 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class M-5
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class M-5 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class M-5 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class M-5 Certificates with respect to
interest on such prior Distribution Dates and (2) interest on such excess (to
the extent permitted by applicable law) at the Class M-5 Pass-Through Rate for
the related Accrual Period. The Class M-5 Interest Carry Forward Amount shall
not include any amounts attributable to an allocation of Deferred Interest.

     Class M-5 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 1.5000% per annum, and (ii) after the Initial
Optional Termination Date, 2.2500% per annum.

     Class M-5 Pass-Through Rate: For the first Distribution Date, 6.850% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class M-5 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

     Class M-5 Principal Distribution Amount: With respect to any Distribution
Date on or after the Stepdown Date, 100% of the Principal Distribution Amount if
the Certificate Principal Balance of each class of Class A, Class M-1, Class
M-2, Class M-3 and Class M-4 Certificates has been reduced to zero and a
Stepdown Trigger Event exists, or, as long as a Stepdown Trigger Event does not
exist, the excess of (1) the sum of (A) the Certificate Principal Balance of the
Senior Certificates and the Certificate Principal Balance of the Class M-1,
Class M-2, Class M-3 and Class M-4 Certificates (after taking into account
distributions of the related Principal Distribution Amount for such Distribution
Date and after the allocation of Deferred Interest, if any, for each
Distribution Date) and (B) the Certificate Principal Balance of the Class M-5
Certificates immediately prior to such Distribution Date over (2) the lesser of
(A) (i) for any

                                      -26-

<PAGE>

Distribution Date on or prior to July 2013, 88.625% of the aggregate Stated
Principal Balance of the Mortgage Loans as of such Distribution Date and (ii)
for any Distribution Date after July 2013, 90.900% of the aggregate Stated
Principal Balance of the Mortgage Loans as of such Distribution Date and (B) the
excess of the aggregate Stated Principal Balance of the Mortgage Loans as of
such Distribution Date over the Minimum Required Overcollateralization Amount.
Notwithstanding the above, (1) on any Distribution Date prior to the Stepdown
Date on which the aggregate Certificate Principal Balance of the Class A, Class
M-1, Class M-2, Class M-3 and Class M-4 Certificates has been reduced to zero,
the Class M-5 Principal Distribution Amount will equal the lesser of (A) the
outstanding Certificate Principal Balance of the Class M-5 Certificates and (B)
100% of the Principal Distribution Amount remaining after any distributions on
the Class A, Class M-1, Class M-2, Class M-3 and Class M-4 Certificates and (2)
in no event will the Class M-5 Principal Distribution Amount with respect to any
Distribution Date exceed the Certificate Principal Balance of the Class M-5
Certificates.

     Class M-6 Certificate: Any Certificate designated as a "Class M-6
Certificate" on the face thereof, in the form of Exhibit A hereto, representing
the right to distributions as set forth herein.

     Class M-6 Certificate Principal Balance: As of any date of determination,
the aggregate Certificate Principal Balance of the Class M-6 Certificates.

     Class M-6 Current Interest: As of any Distribution Date, the interest
accrued during the related Accrual Period at the Class M-6 Pass-Through Rate on
the Class M-6 Certificate Principal Balance as of such Distribution Date plus
the portion of any previous distributions on such Class in respect of Current
Interest or Class M-6 Interest Carry Forward Amount that is recovered as a
voidable preference by a trustee in bankruptcy, less any Prepayment Interest
Shortfalls allocated on such Distribution Date to the Class M-6 Certificates and
less any Deferred Interest allocated on such Distribution Date to the Class M-6
Certificates. For purposes of calculating interest, principal distributions on a
Distribution Date will be deemed to have been made on the first day of the
Accrual Period in which such Distribution Date occurs.

     Class M-6 Interest Carry Forward Amount: As of any Distribution Date, the
sum of (1) the excess of (A) the aggregate amount of the Class M-6 Current
Interest with respect to all prior Distribution Dates over (B) the aggregate
amount actually distributed to the Class M-6 Certificates with respect to
interest on such prior Distribution Dates and (2) interest on such excess (to
the extent permitted by applicable law) at the Class M-6 Pass-Through Rate for
the related Accrual Period. The Class M-6 Interest Carry Forward Amount shall
not include any amounts attributable to an allocation of Deferred Interest.

     Class M-6 Margin: As of any Distribution Date, (i) on or before the Initial
Optional Termination Date, 1.5000% per annum, and (ii) after the Initial
Optional Termination Date, 2.2500% per annum.

     Class M-6 Pass-Through Rate: For the first Distribution Date, 6.850% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class M-6 Margin, (2) the Available Funds Cap for such Distribution
Date and (3) the Maximum Rate Cap for such Distribution Date.

                                      -27-

<PAGE>

     Class M-6 Principal Distribution Amount: With respect to any Distribution
Date on or after the Stepdown Date, 100% of the Principal Distribution Amount if
the Certificate Principal Balance of each class of Class A, Class M-1, Class
M-2, Class M-3, Class M-4 and Class M-5 Certificates has been reduced to zero
and a Stepdown Trigger Event exists, or, as long as a Stepdown Trigger Event
does not exist, the excess of (1) the sum of (A) the Certificate Principal
Balance of the Senior Certificates and the Certificate Principal Balance of the
Class M-1, Class M-2, Class M-3, Class M-4 and Class M-5 Certificates (after
taking into account distributions of the related Principal Distribution Amount
for such Distribution Date and after the allocation of Deferred Interest, if
any, for each Distribution Date) and (B) the Certificate Principal Balance of
the Class M-6 Certificates immediately prior to such Distribution Date over (2)
the lesser of (A) (i) for any Distribution Date on or prior to July 2013,
90.625% of the aggregate Stated Principal Balance of the Mortgage Loans as of
such Distribution Date and (ii) for any Distribution Date after July 2013,
92.500% of the aggregate Stated Principal Balance of the Mortgage Loans as of
such Distribution Date and (B) the excess of the aggregate Stated Principal
Balance of the Mortgage Loans as of such Distribution Date over the Minimum
Required Overcollateralization Amount. Notwithstanding the above, (1) on any
Distribution Date prior to the Stepdown Date on which the aggregate Certificate
Principal Balance of the Class A, Class M-1, Class M-2, Class M-3, Class M-4 and
Class M-5 Certificates has been reduced to zero, the Class M-6 Principal
Distribution Amount will equal the lesser of (A) the outstanding Certificate
Principal Balance of the Class M-6 Certificates and (B) 100% of the Principal
Distribution Amount remaining after any distributions on the Class A, Class M-1,
Class M-2, Class M-3, Class M-4 and Class M-5 Certificates and (2) in no event
will the Class M-6 Principal Distribution Amount with respect to any
Distribution Date exceed the Certificate Principal Balance of the Class M-6
Certificates.

     Class P Certificate: Any one of the Class P Certificates as designated on
the face thereof substantially in the forum of annexed hereto as Exhibit A-4,
executed by the Securities Administrator and authenticated and delivered by the
Securities Administrator representing the right to distributions of Prepayment
Charges received on the Prepayment Charge Mortgage Loans as set forth herein.

     Class R Certificate: The Class R Certificate executed, authenticated and
delivered by the Securities Administrator substantially in the form annexed
hereto as Exhibit A-3 and evidencing the ownership of the residual interest in
each REMIC.

     Class R Certificate Principal Balance: As of any date of determination, the
aggregate Certificate Principal Balance of the Class R Certificate.

     Class R Current Interest: As of any Distribution Date, the interest accrued
during the related Accrual Period at the Class R Pass-Through Rate on the Class
R Certificate Principal Balance as of such Distribution Date plus the portion of
any previous distributions on such Class in respect of Current Interest or a
Class R Interest Carry Forward Amount that is recovered as a voidable preference
by a trustee in bankruptcy, less any Prepayment Interest Shortfalls allocated on
such Distribution Date to the Class R Certificate and less any Deferred Interest
allocated on such Distribution Date to the Class R Certificates. For purposes of
calculating interest, principal distributions on a Distribution Date will be
deemed to have been made on the first day of the Accrual Period in which such
Distribution Date occurs.

                                      -28-

<PAGE>

     Class R Interest Carry Forward Amount: As of any Distribution Date, the sum
of (1) the excess of (A) the Class R Current Interest with respect to prior
Distribution Dates over (B) the amount actually distributed to the Class R
Certificate with respect to interest on such prior Distribution Dates and (2)
interest on such excess (to the extent permitted by applicable law) at the Class
R Pass-Through Rate for the related Accrual Period. The Class R Interest Carry
Forward Amount shall not include amounts attributable to an allocation of
Deferred Interest.

     Class R Margin: With respect to any Distribution Date, (i) on or before the
Initial Optional Termination Date, 0.2500%, and (ii) after the Initial Optional
Termination Date, 0.5000%.

     Class R Pass-Through Rate: For the first Distribution Date, 5.600% per
annum. As of any Distribution Date thereafter, the least of (1) One-Month LIBOR
plus the Class R Margin, (2) the Available Funds Cap for such Distribution Date
and (3) the Maximum Rate Cap for such Distribution Date.

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

     Class SWR Interest: The sole class of "residual interest" in the SWAP
REMIC.

     Closing Date: August 10, 2007.

     CMC: Central Mortgage Company.

     Code: The Internal Revenue Code of 1986, as amended.

     Collection Account: An account established and maintained for the benefit
of Certificateholders by each Servicer with respect to the related Mortgage
Loans and with respect to REO Property pursuant to the Applicable Servicing
Agreement and this Agreement and designated "[Name of Servicer], as servicer for
Wells Fargo Bank, N.A., in trust for registered holders of Merrill Lynch
Alternative Note Asset Trust, Mortgage Pass-Through Certificates, Series
2007-OAR4." Each Collection Account shall be an Eligible Account. Funds in a
Collection Account shall be held in trust for the Certificateholders for the
uses and purposes set forth in this Agreement and the Applicable Servicing
Agreements.

     Commission: The Securities and Exchange Commission.

     Compensating Interest: For any Distribution Date and all Principal
Prepayments in respect of a Mortgage Loan that are received during the period
from the first day of the related Prepayment Period through the last day of the
calendar month preceding such Distribution Date, a payment made by the
applicable Servicer in an amount equal to the interest accrued at the Net
Mortgage Rate for that Mortgage Loan from the date of prepayment through the
30th day of the preceding calendar month; provided, however, that such amount
shall not exceed a Principal Prepayment in Full or a Curtailment, the product of
(a) the Servicing Fee Rate and (b) the

                                      -29-

<PAGE>

aggregate Stated Principal Balance of the Mortgage Loans for such Distribution
Date; and provided further, however, that any month consisting of less than 30
days shall be deemed to consist of 30 days.

     Compensating Interest Payment: As defined in Section 6.05.

     Cooperative: A corporation that has been formed for the purpose of
cooperative apartment ownership.

     Cooperative Assets: Shares issued by Cooperatives, the related Cooperative
Lease and any other collateral securing the Cooperative Loans.

     Cooperative Lease: With respect to a Cooperative Loan, the proprietary
lease or occupancy agreement with respect to the cooperative apartment occupied
by the Mortgagor and relating to the related Cooperative Assets, which lease or
agreement confers an exclusive right to the holder of such Cooperative Assets to
occupy such apartment.

     Cooperative Loan: The indebtedness of a Mortgagor evidenced by a Mortgage
Note which is secured by Cooperative Assets and which is being sold to the
Depositor pursuant to this Agreement, the Mortgage Loans so sold being
identified in the Mortgage Loan Schedule.

     Cooperative Stock: With respect to a Cooperative Loan, the single
outstanding class of stock, partnership interest or other ownership instrument
in the related Cooperative.

     Corporate Trust Office: With respect to the Trustee, the principal
corporate trust office of the Trustee at which at any particular time its
corporate trust business in connection with this Agreement shall be
administered, which office at the date of the execution of this instrument is
located at HSBC Bank USA, National Association, 452 Fifth Avenue, New York, New
York 10018, Attention: Issuer Services - Merrill Lynch Mortgage Investors, Inc.,
MANA Series 2007-OAR4, or at such other address as the Trustee may designate
from time to time by notice to the Certificateholders, the Depositor and the
Master Servicer and with respect to the Securities Administrator, for
Certificate transfer purposes, Wells Fargo Center, Sixth Street and Marquette
Avenue, Minneapolis, Minnesota 55479, Attn: Corporate Trust Services - MANA
2007-OAR4, and for all other purposes, 9062 Old Annapolis Road, Columbia,
Maryland, 21045, Attn: Client Manager - MANA 2007-OAR4.

     Corresponding Certificates: With respect to the Class LTA-1 Interest, the
Class A-1 and Class R Certificates. With respect to the Class LTA-2 Interest,
the Class A-2 Certificates. With respect to the Class LTA-3 Interest, the Class
A-3 Certificates. With respect to the Class LTM-1 Interest, the Class M-1
Certificates. With respect to the Class LTM-2 Interest, the Class M-2
Certificates. With respect to the Class LTM-3 Interest, the Class M-3
Certificates. With respect to the Class LTM-4 Interest, the Class M-4
Certificates. With respect to the Class LTM-5 Interest, the Class M-5
Certificates. With respect to the Class LTM-6 Interest, the Class M-6
Certificates. With respect to the Class LTB-1 Interest, the Class B-1
Certificates. With respect to the Class LTB-2 Interest, the Class B-2
Certificates. With respect to the Class LTB-3 Interest, the Class B-3
Certificates.

                                      -30-

<PAGE>

     Corresponding REMIC Regular Interest: For each Class of Certificates, the
interest in the Upper Tier REMIC listed on the same row in the table entitled
"Upper Tier REMIC" in the Preliminary Statement.

     Corridor Contract: The long form confirmation, between the Securities
Administrator on behalf of the Issuing Entity and the Cap Contract Counterparty
(in the form of Exhibit N hereto).

     Corridor Contract Account: The separate Eligible Account created and
maintained by the Supplemental Interest Trust Trustee pursuant to Section
6.01(l) in the name of the Securities Administrator for the benefit of the
Issuing Entity and designated "Wells Fargo Bank, National Association, as
Securities Administrator for Merrill Lynch Mortgage Investors, Inc., Mortgage
Pass-Through Certificates, MANA Series 2007-OAR4 - Corridor Contract Account."
Funds in the Corridor Contract Account shall be held in trust for the Issuing
Entity for the uses and purposes set forth in this Agreement.

     Corridor Contract Notional Balance: With respect to any Distribution Date,
the Corridor Contract Notional Balance set forth for such Distribution Date in
the One-Month LIBOR Corridor Table attached hereto as Exhibit H.

     Corridor Contract Termination Date: The Distribution Date in June 2008.

     Current Interest: Any of the Class A-1 Current Interest, the Class A-2
Current Interest, the Class A-3 Current Interest, the Class R Current Interest,
the Class M-1 Current Interest, the Class M-2 Current Interest, the Class M-3
Current Interest, the Class M-4 Current Interest, the Class M-5 Current
Interest, the Class M-6 Current Interest, the Class B-1 Current Interest, the
Class B-2 Current Interest, the Class B-3 Current Interest and the Class C
Current Interest.

     Curtailment: Any Principal Prepayment made by a Mortgagor which is not a
Principal Prepayment in Full.

     Custodial Agreement: An agreement, dated as of the Closing Date among the
Depositor, the Master Servicer, the Securities Administrator, the Trustee and
the Custodian in substantially the form of Exhibit G hereto.

     Custodian: Wells Fargo Bank, N.A., including any successors in interest, or
any successor custodian appointed pursuant to the provisions hereof and of the
Custodial Agreement.

     Cut-off Date: July 1, 2007.

     Cut-off Date Principal Balance: As to any Mortgage Loan, the unpaid
principal balance thereof as of the close of business on the calendar day
immediately preceding the Cut-off Date after application of all payments of
principal due on or prior to the Cut-off Date, whether or not received, and all
principal prepayments received prior to the Cut-off Date, but without giving
effect to any installments of principal received in respect of Due Dates after
the Cut-off Date.

     Debt Service Reduction: Any reduction of the Monthly Payments which a
Mortgagor is obligated to pay with respect to a Mortgage Loan as a result of any
proceeding under the Bankruptcy Code or any other similar state law or other
proceeding.

                                      -31-

<PAGE>

     Defaulted Swap Termination Payment: Any payment required to be made by the
Supplemental Interest Trust to the Swap Counterparty pursuant to the Swap
Agreement as a result of an event of default under the Swap Agreement with
respect to which the Swap Counterparty is the defaulting party or a termination
event under that agreement (other than illegality or a tax event) with respect
to which the Swap Counterparty is the sole Affected Party (as defined in the
Swap Agreement).

     Defective Mortgage Loan: A Mortgage Loan replaced or to be replaced by one
or more Substitute Mortgage Loans.

     Deferred Interest: Any interest shortfall resulting from Net Negative
Amortization.

     Deficient Valuation: With respect to any Mortgage Loan, a valuation of the
related Mortgaged Property by a court of competent jurisdiction in an amount
less than the then outstanding principal balance of the Mortgage Loan, which
valuation results from a proceeding initiated under the Bankruptcy Code.

     Definitive Certificates: As defined in Section 5.06.

     Delinquent: A Mortgage Loan is "delinquent" if any payment due thereon is
not made pursuant to the terms of such Mortgage Loan by the close of business on
the day such payment is scheduled to be due. A Mortgage Loan is "30 days
delinquent" if such payment has not been received by the close of business on
the corresponding day of the month immediately succeeding the month in which
such payment was due, or, if there is no such corresponding day (e.g., as when a
30-day month follows a 31-day month in which a payment was due on the 31st day
of such month), then on the last day of such immediately succeeding month. With
respect to any Mortgage Loan due on any day other than the first day of the
month, such Mortgage Loan shall be deemed to be due on the first day of the
immediately succeeding month. Similarly for "60 days delinquent," "90 days
delinquent" and so on.

     Depositor: Merrill Lynch Mortgage Investors, Inc., a Delaware corporation,
or any successor in interest.

     Depository: The Depository Trust Company, the nominee of which is Cede &
Co., or any successor thereto.

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

     Designated Depository Institution: A depository institution (commercial
bank, federal savings bank, mutual savings bank or savings and loan association)
or trust company (which may include the Trustee), the deposits of which are
fully insured by the FDIC to the extent provided by law.

     Determination Date: With respect to any Distribution Date, the 15th day of
the month of such Distribution Date or, if such 15th day is not a Business Day,
the immediately preceding Business Day.

                                      -32-

<PAGE>

     Disqualified Organization: A "disqualified organization" as defined in
Section 860E(e)(5) of the Code.

     Distribution Account: The trust account or accounts created and maintained
pursuant to Section 4.04, which shall be denominated "Wells Fargo Bank, N.A., as
Securities Administrator for HSBC Bank USA, National Association, as Trustee
f/b/o holders of Merrill Lynch Mortgage Investors, Inc., Mortgage Pass-Through
Certificates, MANA Series 2007-OAR4 - Distribution Account." The Distribution
Account shall be an Eligible Account.

     Distribution Account Deposit Date: The Business Day prior to each
Distribution Date.

     Distribution Date: The 25th day of any month, beginning in August 2007, or,
if such 25th day is not a Business Day, the Business Day immediately following.

     Due Date: With respect to any Distribution Date and any Mortgage Loan, the
day during the related Due Period on which a Scheduled Payment is due.

     Due Period: With respect to any Distribution Date and each Mortgage Loan,
the period commencing on the second day of the month preceding the month in
which the Distribution Date occurs and ending at the close of business on the
first day of the month in which the Distribution Date occurs.

     Eligible Account: Any of (i) a segregated account maintained with a federal
or state chartered depository institution (A) the short-term obligations of
which are rated A-1 or better by S&P and P-1 by Moody's at the time of any
deposit therein or (B) the long term unsecured debt obligations of which are
rated at least "AA-" by S&P and "A+" by Fitch if the deposits are to be held in
the account more than 30 days; following a downgrade, withdrawal, or suspension
of such institution's rating, each account should promptly (and in any case
within not more than 30 calendar days) be moved to a qualifying institution or
to one or more segregated trust accounts in the trust department of such
institution, if permitted, (ii) a segregated trust account or accounts
maintained with a federal or state chartered depository institution or trust
company with trust powers acting in its fiduciary capacity or (iii) a segregated
account or accounts of a depository institution acceptable to the NIMs Insurer
and the Rating Agencies (as evidenced by a letter from each Rating Agency that
use of any such account as the Distribution Account will not have an adverse
effect on the then-current ratings assigned to the Classes of the Certificates
then rated by the Rating Agencies). Eligible Accounts may bear interest.

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

     ERISA Restricted Certificates: The Class C, the Class P and the Subordinate
Certificates and any other Certificate, as long as the acquisition and holding
of such Certificate is not covered by and exempt under an underwriter's
exemption.

     ERISA-Qualifying Underwriting: A best efforts or firm commitment
underwriting or private placement that would satisfy the requirements of
Prohibited Transaction Exemption 90-29, Exemption Application No. D-8012, 55
Fed. Reg. 21459 (1990), as amended, granted to the underwriter by the United
States Department of Labor (or any other applicable underwriter's exemption
granted by the United States Department of Labor), except, in relevant part, for
the

                                      -33-

<PAGE>

requirement that the certificates have received a rating at the time of
acquisition that is in one of the two highest generic rating categories by at
least one of the Rating Agencies.

     Event of Default: An event of default described in Section 8.01.

     Excess Interest: On any Distribution Date, for the Senior Certificates,
Class M and Class B Certificates, the excess, if any, of (1) the amount of
interest such Class of Certificates is entitled to receive on such Distribution
Date over (2) the amount of interest such Class of Certificates would have been
entitled to receive on such Distribution Date at an interest rate equal to the
REMIC Pass-Through Rate.

     Excess Liquidation Proceeds: To the extent that such amount is not required
by law to be paid to the related Mortgagor, the amount, if any, by which
Liquidation Proceeds with respect to a Liquidated Mortgage Loan exceed the sum
of (i) the Outstanding Principal Balance of such Mortgage Loan and accrued but
unpaid interest at the related Mortgage Interest Rate through the last day of
the month in which the related Liquidation Date occurs, plus (ii) related
Liquidation Expenses.

     Exchange Act: The Securities Exchange Act of 1934, as amended.

     Extra Principal Distribution Amount: With respect to any Distribution Date,
(1) prior to the Stepdown Date, the excess, if any, of (A) the sum of (x) the
aggregate Certificate Principal Balance of the Certificates (other than the
Class C Certificates) reduced by the Principal Funds with respect to such
Distribution Date and (y) $6,711,611 over (B) the aggregate Stated Principal
Balance of the Mortgage Loans as of such Distribution Date and (2) on and after
the Stepdown Date, the excess, if any, of (A) the sum of (x) the aggregate
Certificate Principal Balance of the Certificates (other than the Class C
Certificates) reduced by the Principal Funds with respect to such Distribution
Date and (y) the greater of (a) (I) on or prior to the Distribution Date in July
2013, 4.750% of the aggregate Stated Principal Balance of the Mortgage Loans as
of such Distribution Date and (II) after the Distribution Date in July 2013,
3.800% of the aggregate Stated Principal Balance of the Mortgage Loans as of
such Distribution Date and (b) the Minimum Required Overcollateralization Amount
less (B) the aggregate Stated Principal Balance of the Mortgage Loans; provided,
however, that if on any Distribution Date a Stepdown Trigger Event is in effect,
the Extra Principal Distribution Amount will not be reduced to the applicable
percentage of then-current aggregate Stated Principal Balance of the Mortgage
Loans (and will remain fixed at the applicable percentage of the aggregate
Stated Principal Balance of the Mortgage Loans as of the Due Date immediately
prior to the Stepdown Trigger Event) until the next Distribution Date on which
the Stepdown Trigger Event is not in effect.

     Extraordinary Trust Fund Expenses: Any amounts reimbursable to the Master
Servicer, the Servicers or the Depositor pursuant to this Agreement, including
but not limited to Sections 4.03, 4.05 and 7.04, any amounts reimbursable to the
Trustee and the Securities Administrator from the Trust Fund pursuant to this
Agreement, including but not limited to Section 9.05, and any other costs,
expenses, liabilities and losses borne by the Trust Fund (exclusive of any cost,
expense, liability or loss that is specific to a particular Mortgage Loan or REO
Property and is taken into account in calculating a Realized Loss in respect
thereof) for which the Trust Fund has

                                      -34-

<PAGE>

not and, in the reasonable good faith judgment of the Securities Administrator,
shall not, obtain reimbursement or indemnification from any other Person.

     Fannie Mae: Federal National Mortgage Association or any successor thereto.

     FDIC: Federal Deposit Insurance Corporation or any successor thereto.

     Final Certification: The certification substantially in the form of Exhibit
Two to the Custodial Agreement.

     Final Scheduled Distribution Date: With respect to the Certificates, the
Distribution Date in September 2037.

     Fitch: Fitch Ratings or its successor in interest.

     Floating Rate Certificate Carryover: With respect to a Distribution Date,
in the event that the Pass-Through Rate for a class of Senior, Class M or Class
B Certificates is based upon the Available Funds Cap or the Maximum Rate Cap,
the sum of (A) the excess of (1) the amount of interest that such Class would
have been entitled to receive on such Distribution Date had the Pass-Through
Rate for that Class not been calculated based on the Available Funds Cap or the
Maximum Rate Cap, up to but not exceeding the greater of (a) the Maximum Rate
Cap or (b) the sum of (i) the Available Funds Cap and (ii) the product of (AA) a
fraction, the numerator of which is 360 and the denominator of which is the
actual number of days in the related Accrual Period and (BB) the sum of (x) the
quotient obtained by dividing (I) an amount equal to the proceeds, if any,
payable under the Corridor Contract with respect to such Distribution Date and
(II) the aggregate Certificate Principal Balance of each of the Classes of
Certificates to which such Corridor Contract relates for such Distribution Date
and (y) the quotient obtained by dividing (I) an amount equal to any Net Swap
Payments owed by the Swap Counterparty for such Distribution Date by (II) the
aggregate Stated Principal Balance of the Mortgage Loans as of the immediately
preceding Distribution Date over (2) the amount of interest such Class was
entitled to receive on such Distribution Date based on the Available Funds Cap,
(B) the unpaid portion of any such excess from prior Distribution Dates (and
interest accrued thereon at the then applicable Pass-Through Rate for such
class, without giving effect to the Available Funds Cap or the Maximum Rate Cap)
and (C) any amount previously distributed with respect to Floating Rate
Certificate Carryover for such Class that is recovered as a voidable preference
by a trustee in bankruptcy.

     Form 8-K Disclosure Information: As defined in Section 3.18(a).

     Freddie Mac: Freddie Mac, formerly the Federal Home Loan Mortgage
Corporation, or any successor thereto.

     Gross Margin: As to each Mortgage Loan, the fixed percentage set forth in
the related Mortgage Note and indicated on the Mortgage Loan Schedule which
percentage is added to the related Index on each Interest Adjustment Date to
determine (subject to rounding, the minimum and maximum Mortgage Interest Rate
and the Periodic Rate Cap) the Mortgage Interest Rate until the next Interest
Adjustment Date.

                                      -35-

<PAGE>

     Indemnified Persons: The Trustee, the Master Servicer, the Servicers, the
Depositor, the Securities Administrator, the NIMs Insurer and their respective
officers, directors, agents and employees and, with respect to the Trustee, any
separate co-trustee and its officers, directors, agents and employees.

     Indenture: An indenture relating to the issuance of the NIM Notes, which
may be guaranteed by the NIMs Insurer.

     Independent: When used with respect to any specified Person, any such
Person who (a) is in fact independent of the Depositor, the Master Servicer and
their respective Affiliates, (b) does not have any direct financial interest in
or any material indirect financial interest in the Depositor or the Master
Servicer or any Affiliate thereof, and (c) is not connected with the Depositor
or the Master Servicer or any Affiliate thereof as an officer, employee,
promoter, underwriter, trustee, partner, director or Person performing similar
functions; provided, however, that a Person shall not fail to be Independent of
the Depositor or the Master Servicer or any Affiliate thereof merely because
such Person is the beneficial owner of 1% or less of any class of securities
issued by the Depositor or the Master Servicer or any Affiliate thereof, as the
case may be.

     Index: The index, if any, specified in a Mortgage Note by reference to
which the related Mortgage Interest Rate will be adjusted from time to time.

     IndyMac Bank: IndyMac Bank, F.S.B.

     Initial Certification: The certification substantially in the form of
Exhibit One to the Custodial Agreement.

     Initial Certificate Principal Balance: With respect to any Regular
Certificate, the amount designated "Initial Certificate Principal Balance" on
the face thereof.

     Initial Optional Termination Date: The first Distribution Date following
the date on which the aggregate Stated Principal Balance of the Mortgage Loans
is less than 10% of the aggregate Stated Principal Balance of the Mortgage Loans
as of the Cut-off Date.

     Insurance Policy: With respect to any Mortgage Loan, any standard hazard
insurance policy, flood insurance policy or title insurance policy.

     Insurance Proceeds: Amounts paid by the insurer under any Insurance Policy
covering any Mortgage Loan or Mortgaged Property other than amounts required to
be paid over to the Mortgagor pursuant to law or the related Mortgage Note or
Security Instrument and other than amounts used to repair or restore the
Mortgaged Property or to reimburse insured expenses.

     Interest Adjustment Date: With respect to a Mortgage Loan, the date, if
any, specified in the related Mortgage Note on which the Mortgage Interest Rate
is subject to adjustment.

     Interest Carry Forward Amount: Any of the Class A-1 Interest Carry Forward
Amount, the Class A-2 Interest Carry Forward Amount, the Class A-3 Interest
Carry Forward Amount, the Class R Interest Carry Forward Amount, the Class M-1
Interest Carry Forward Amount, the

                                      -36-

<PAGE>

Class M-2 Interest Carry Forward Amount, the Class M-3 Interest Carry Forward
Amount, the Class M-4 Interest Carry Forward Amount, the Class M-5 Interest
Carry Forward Amount, the Class M-6 Interest Carry Forward Amount, the Class B-1
Interest Carry Forward Amount, the Class B-2 Interest Carry Forward Amount, the
Class B-3 Interest Carry Forward Amount or the Class C Interest Carry Forward
Amount, as the case may be.

     Interest Determination Date: Each date that is the second LIBOR Business
Day preceding the commencement of each Accrual Period for the Certificates.

     Interest Funds: With respect to any Distribution Date and the Mortgage
Loans, the sum, without duplication, of (1) all interest due during the related
Due Period that is received before the related Servicer Remittance Date less the
Servicing Fee, (2) all Advances relating to interest, (3) all Compensating
Interest Payments, (4) Liquidation Proceeds collected during the related
Prepayment Period (to the extent such liquidation proceeds relate to interest),
(5) proceeds of any Mortgage Loan purchased by the Depositor or any transferor
under the Pooling and Servicing Agreement during the related Prepayment Period
for document defects, breach of a representation or warranty, realization upon
default or optional termination (to the extent such proceeds relate to
interest), (6) Prepayment Charges received with respect to the related Mortgage
Loans, less all non-recoverable Advances and Servicing Advances relating to
interest and certain indemnification amounts, expenses reimbursed to the
Trustee, Securities Administrator, Master Servicer and the Servicers (not
limited to such Advances, Servicing Advances, interest, amounts and expenses set
forth in this clause (6)) and (7) as increased by the lesser of (x) the
aggregate amount of items (2), (3), (4) and (5) of the definition of Principal
Funds collected during the related Prepayment Period and (y) the aggregate
amount of Negative Amortization during the related Prepayment Period.

     Investor Representation Letter: As defined in Section 5.02(b).

     Issuing Entity: Merrill Lynch Alternative Note Asset Trust, Series
2007-OAR4.

     Latest Possible Maturity Date: The latest maturity date for any Mortgage
Loan in the Trust Fund plus one month.

     LIBOR Business Day: Any day on which banks in the City of London, England
and New York City, U.S.A. are open and conducting transactions in foreign
currency and exchange.

     LIBOR Certificates: Any of the Certificates (other than the Class C and
Class P Certificates).

     Liquidated Mortgage Loan: Any defaulted Mortgage Loan (including any REO
Property) as to which the applicable Servicer has determined that all amounts it
expects to recover from or on account of such Mortgage Loan have been recovered.

     Liquidation Date: With respect to any Liquidated Mortgage Loan, the date on
which the applicable Servicer has certified that such Mortgage Loan has become a
Liquidated Mortgage Loan.

                                      -37-

<PAGE>

     Liquidation Expenses: With respect to a Mortgage Loan in liquidation,
unreimbursed expenses paid or incurred by or for the account of the Master
Servicer or the applicable Servicer in connection with the liquidation of such
Mortgage Loan and the related Mortgaged Property, such expenses including (a)
property protection expenses, (b) property sales expenses, (c) foreclosure and
sale costs, including court costs and reasonable attorneys' fees, and (d)
similar expenses reasonably paid or incurred in connection with liquidation.

     Liquidation Proceeds: With respect to any Mortgage Loan, cash received in
connection with the liquidation of a defaulted Mortgage Loan, whether through
trustee's sale, foreclosure sale or otherwise, and amounts received through
Insurance Proceeds and condemnation proceeds.

     Loan-to-Value Ratio: With respect to any Mortgage Loan, the fraction,
expressed as a percentage, the numerator of which is the original principal
balance of the related Mortgage Loan and the denominator of which is the
Original Value of the related Mortgaged Property.

     Lower Collar: With respect to each Distribution Date, the applicable per
annum rate set forth under the heading "1ML Strike Lower Collar" in the
One-Month LIBOR Corridor Table (set forth on Exhibit H).

     Lower Tier REMIC: As described in the Preliminary Statement and Section
9.12.

     Lower Tier REMIC Interests: Each of the Class LTA-1 Interest, the Class
LTA-2 Interest, the Class LTA-3 Interest, the Class LTM-1 Interest, the Class
LTM-2 Interest, the Class LTM-3 Interest, the Class LTM-4 Interest, the Class
LTM-5 Interest, the Class LTM-6 Interest, the Class LTB-1 Interest, the Class
LTB-2 Interest, the Class LTB-3 Interest, the Class LTX Interest, the Class
LT-IO Interest and the Class LTR Interest.

     Lower Tier REMIC Marker Interests: Each of the classes of Lower Tier REMIC
Regular Interests other than the Class LTX Interest and the Class LT-IO
Interest.

     Lower Tier REMIC Regular Interests: Each of the Lower Tier REMIC Interests
other than the Class LTR Interest.

     Lower Tier REMIC Subordinated Balance Ratio: Not applicable.

     Master Servicer: Wells Fargo Bank, N.A. including any successors in
interest who meet the qualifications for a master servicer set forth in this
Agreement, and any successor master servicer appointed hereunder.

     Master Servicer Collection Account: The trust account or accounts created
and maintained pursuant to Section 4.02, which shall be denominated "Wells Fargo
Bank, N.A. as Master Servicer for HSBC Bank USA, National Association, as
Trustee f/b/o holders of Merrill Lynch Mortgage Investors, Inc., Mortgage
Pass-Through Certificates, MANA Series 2007-OAR4 - Master Servicer Collection
Account." The Master Servicer Collection Account shall be an Eligible Account.

     Master Servicing Compensation: The meaning specified in Section 3.14.

                                      -38-
<PAGE>

     Maximum Lifetime Mortgage Rate: The maximum level to which a Mortgage
Interest Rate can adjust in accordance with its terms, regardless of changes in
the applicable Index.

     Maximum Rate Cap: With respect to a Distribution Date, the per annum rate
equal to the product of (i) 12, (ii) the quotient of (x) the total scheduled
interest that would have been due on the Mortgage Loans had the Mortgage Loans
provided for interest at their maximum lifetime Net Mortgage Rates less any Net
Swap Payments or Swap Termination Payments owed to the Swap Counterparty for
such Distribution Date (other than Defaulted Swap Termination Payments), and (y)
the aggregate Stated Principal Balance of the Mortgage Loans as of the first day
of the related Accrual Period (or, in the case of the first Distribution Date,
as of the Cut-off Date) and (iii) a fraction, the numerator of which is 30 and
the denominator of which is the actual number of days in the related Accrual
Period.

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

     MERS Loan: Any Mortgage Loan registered with MERS on the MERS System.

     MERS System: The system of recording transfers of mortgage electronically
maintained by MERS.

     MIN: The loan number for any MERS Loan.

     Minimum Lifetime Mortgage Rate: The minimum level to which a Mortgage
Interest Rate can adjust in accordance with its terms, regardless of changes in
the applicable Index.

     Minimum Payment: The minimum Monthly Payment required to be paid by a
Mortgagor.

     Minimum Required Overcollateralization Amount: An amount equal to the
product of (x) 0.50% and (y) the aggregate Stated Principal Balance of the
Mortgage Loans as of the Cut-off Date.

     MLML: Merrill Lynch Mortgage Lending, Inc., a Delaware corporation, or any
successor in interest.

     Monthly Payment: With respect to any Mortgage Loan, the scheduled monthly
payment of principal and interest on such Mortgage Loan which is payable by the
related Mortgagor from time to time under the related Mortgage Note, determined:
(a) after giving effect to the Mortgagor's choice of payment to the extent
permitted by the Mortgage Note, (b) after giving effect to (i) any Deficient
Valuation and/or Debt Service Reduction with respect to such Mortgage Loan and
(ii) any reduction in the amount of interest collectible from the related
Mortgagor pursuant to the Relief Act; (c) without giving effect to any extension
granted or agreed to by the applicable Servicer pursuant to the Applicable
Servicing Agreement; and (d) on the assumption that all other amounts, if any,
due under such Mortgage Loan are paid when due.

     Monthly Statement: The statement distributed to Certificateholders pursuant
to Section 6.03.

                                      -39-

<PAGE>

     Moody's: Moody's Investors Service, Inc. or its successor in interest.

     Mortgage: The mortgage, deed of trust or other instrument creating a first
lien on, or first priority security interest in, a Mortgaged Property securing a
Mortgage Note.

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

     Mortgage Interest Rate: The annual rate at which interest accrues from time
to time on any Mortgage Loan pursuant to the related Mortgage Note.

     Mortgage Loan: A mortgage loan transferred and assigned to the Trustee
pursuant to Section 2.01 or Section 2.04 and held as a part of the Trust Fund,
as identified in the Mortgage Loan Schedule, including a mortgage loan the
property securing which has become an REO Property.

     Mortgage Loan Purchase Agreement: The Mortgage Loan Purchase Agreement,
dated as of July 1, 2007, between the Sponsor, as seller, and the Depositor, as
purchaser, and all amendments thereof and supplements thereto, substantially in
the form annexed hereto as Exhibit J.

     Mortgage Loan Schedule: The Mortgage Loan Schedule, attached hereto as
Exhibit B, with respect to the Mortgage Loans and as amended from time to time
to reflect the repurchase or substitution of Mortgage Loans pursuant to this
Agreement.

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

     Mortgage Pool: The pool of Mortgage Loans, identified on Exhibit B from
time to time, and any REO Properties acquired in respect thereof.

     Mortgaged Property: Land and improvements securing the indebtedness of a
Mortgagor under the related Mortgage Loan or, in the case of REO Property, such
REO Property.

     Mortgagor: The obligor on a Mortgage Note.

     Negative Amortization: With respect to each Distribution Date, the amount
of interest on the Mortgage Loans that the related Mortgagors are not obligated
to pay as interest (and which shall be added to the Stated Principal Balance of
each such Mortgage Loan) due to the negative amortization feature of such
Mortgage Loans, in each case during the related Due Period.

     Negative Amortization Certificate: Any Certificate other than the Class P
Certificate.

     Net Excess Cashflow: Any Interest Funds and Principal Funds not otherwise
required to be distributed with respect to principal of and interest on the
Certificates and not otherwise required to be distributed to the Class P
Certificates, less any Net Swap Payments or Swap Termination Payment to the Swap
Counterparty and the Issuing Entity expenses.

                                      -40-

<PAGE>

     Net Liquidation Proceeds: As to any Liquidated Mortgage Loan, Liquidation
Proceeds net of (i) Liquidation Expenses which are payable therefrom by the
applicable Servicer or the Master Servicer in accordance with the Applicable
Servicing Agreement and (ii) unreimbursed advances by the applicable Servicer or
the Master Servicer and Advances.

     Net Mortgage Rate: With respect to each Mortgage Loan, the Mortgage
Interest Rate in effect from time to time less the Servicing Fee Rate (expressed
as a per annum rate).

     Net Negative Amortization: For any Distribution Date, the excess, if any,
of (i) the Negative Amortization with respect to the Mortgage Loans for the
related calendar month prior to that Distribution Date, over (ii) the aggregate
amount of items (2), (3), (4) and (5) of the definition of Principal Funds
collected during the related Prepayment Period.

     Net Rate: The per annum rate set forth in footnote 3 to the description of
the Lower Tier REMIC in the Preliminary Statement hereto (such rate being based
on the weighted average of the interest rates on the SWAP REMIC Regular
Interests as adjusted and as set forth in such footnote).

     Net Swap Payment: With respect to any Distribution Date, any net payment
(other than a Swap Termination Payment or Defaulted Swap Termination Payment)
made by the Supplemental Interest Trust to the Swap Counterparty on the related
Fixed Rate Payer Payment Date (as defined in the Swap Agreement) or made by the
Swap Counterparty to the Supplemental Interest Trust on the related Floating
Rate Payer Payment Date (as defined in the Swap Agreement). In each case, the
Net Swap Payment shall not be less than zero.

     Net WAC: With respect to any Distribution Date, the weighted average Net
Mortgage Rate for the Mortgage Loans calculated based on the respective Net
Mortgage Rates and the Stated Principal Balances of such Mortgage Loans as of
the preceding Distribution Date (or, in the case of the first Distribution Date,
as of the Cut-off Date).

     NIMs Insurer: Any of the one or more insurers, if any, that may be
guaranteeing certain payments under any NIM Notes; provided, that upon the
payment in full of the NIM Notes, all rights of the NIMs Insurer hereunder shall
terminate.

     NIMs Insurer Default: As defined in Section 11.14.

     NIM Notes: The net interest margin or excess cashflow securities to be
issued pursuant to an indenture.

     Non-Recoverable Advance: Any portion of an Advance previously made or
proposed to be made by a Servicer that, in the good faith judgment of such
Servicer, will not or, in the case of a current delinquency, would not, be
ultimately recoverable by such Servicer from the related Mortgagor, related
Liquidation Proceeds or otherwise related to the Mortgage Loans.

     Non-Recoverable Servicing Advance: Any portion of a Servicing Advance
previously made or proposed to be made by a Servicer that, in the good faith
judgment of such Servicer, will not or, in the case of a current Servicing
Advance, would not, be ultimately recoverable by such

                                      -41-

<PAGE>

Servicer from the related Mortgagor, related Liquidation Proceeds or otherwise
related to the Mortgage Loans.

     Offered Certificate: Any Senior Certificate or Subordinate Certificate
issued hereunder.

     Officer's Certificate: A certificate signed by the Chairman of the Board,
the Vice Chairman of the Board, the President or a Vice President or Assistant
Vice President or other authorized officer of the Servicers, the Master Servicer
or the Depositor, as applicable, and delivered to the Trustee, as required by
this Agreement.

     One-Month LIBOR: With respect to any Accrual Period, the rate determined by
the Securities Administrator on the related Interest Determination Date on the
basis of (1) the offered rates for one-month United States dollar deposits from
Reuters, as of 11:00 a.m. (London time) on such Interest Determination Date (or
if such service is no longer offered, such other service for displaying LIBOR or
comparable rates as may be reasonably selected by the Securities Administrator)
or (2) if such rate does not appear on Reuters as of 11:00 a.m. (London time),
the Securities Administrator will determine such rate on the basis of the
offered rates of the Reference Banks for one-month United States dollar
deposits, as such rates appear on the Reuters Screen LIBO Page, as of 11:00 a.m.
(London time) on such Interest Determination Date:

          (i) If on such Interest Determination Date two or more Reference Banks
     provide such offered quotations, One-Month LIBOR for the related Accrual
     Period shall be the arithmetic mean of such offered quotations (rounded
     upwards if necessary to the nearest whole multiple of 0.03125%).

          (ii) If on such Interest Determination Date fewer than two Reference
     Banks provide such offered quotations, One-Month LIBOR for the related
     Accrual Period shall be the higher of (i) One-Month LIBOR as determined on
     the previous Interest Determination Date and (ii) the Reserve Interest
     Rate.

     Opinion of Counsel: A written opinion of counsel who is or are acceptable
to the Trustee and who, unless required to be Independent (an "Opinion of
Independent Counsel"), may be internal counsel for the Master Servicer or the
Depositor.

     Optional Termination: The termination hereunder of that portion of the
Trust Fund related to the Certificates pursuant to Section 10.01(a) hereof.

     Optional Termination Amount: The amount received by the Securities
Administrator in connection with any purchase of all of the Mortgage Loans and
REO Properties pursuant to Section 10.01(b) hereof.

     Optional Termination Price: On any date after the Initial Optional
Termination Date, an amount equal to the sum of (A) the aggregate Stated
Principal Balance of each Mortgage Loan (other than any Mortgage Loan that has
become an REO Property) as of the Distribution Date on which the proceeds of the
Optional Termination are distributed to the Certificateholders, plus accrued
interest thereon at the applicable Mortgage Interest Rate as of the Due Date
preceding the Distribution Date on which the proceeds of the Optional
Termination are distributed to Certificateholders and the fair market value of
any REO Property, plus accrued interest thereon

                                      -42-

<PAGE>

as of the Distribution Date on which the proceeds of the Optional Termination
are distributed to Certificateholders, (B) any unreimbursed out-of-pocket costs
and expenses, fees and indemnity amounts owed to the Master Servicer, the
Trustee or the Securities Administrator (including any amounts incurred by the
Securities Administrator in connection with conducting the Auction) and any
unpaid or unreimbursed Servicing Fees, Advances and Servicing Advances, (C) any
unreimbursed costs, penalties and/or damages incurred by the Trust Fund in
connection with any violation relating to any of the Mortgage Loans of any
predatory or abusive lending law, (D) in the event an Auction has been
conducted, all reasonable fees and expenses incurred by the Securities
Administrator to conduct the Auction and (E) any unpaid Net Swap Payments, any
Swap Termination Payment and any other amounts owed to the Swap Counterparty and
determined in accordance with the Swap Agreement.

     Original Value: The lesser of (i) the Appraised Value or (ii) the sales
price of a Mortgaged Property at the time of origination of a Mortgage Loan,
except in instances where either clauses (i) or (ii) is unavailable, the other
may be used to determine the Original Value, or if both clauses (i) and (ii) are
unavailable, Original Value may be determined from other sources reasonably
acceptable to the Depositor.

     OTS: The Office of Thrift Supervision.

     Outstanding Mortgage Loan: With respect to any Due Date, a Mortgage Loan
which, prior to such Due Date, was not the subject of a Principal Prepayment in
Full, did not become a Liquidated Mortgage Loan and was not purchased or
replaced.

     Outstanding Principal Balance: As of the time of any determination, the
principal balance of a Mortgage Loan remaining to be paid by the Mortgagor, or,
in the case of an REO Property, the principal balance of the related Mortgage
Loan remaining to be paid by the Mortgagor at the time such property was
acquired by the Trust Fund less any Net Liquidation Proceeds with respect
thereto to the extent applied to principal.

     Overcollateralization Amount: As of any date of determination, the excess
of (1) the Stated Principal Balance of the Mortgage Loans over (2) the
Certificate Principal Balance of the Certificates (other than the Class P
Certificates and the Class C Certificates).

     Ownership Interest: As to any Certificate, any ownership or security
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, as owner or as pledgee.

     Pass-Through Margin: Any of the Class A-1 Pass-Through Margin, the Class
A-2 Pass-Through Margin, the Class A-3 Pass-Through Margin, the Class M-1
Pass-Through Margin, the Class M-2 Pass-Through Margin, the Class M-3
Pass-Through Margin, the Class M-4 Pass-Through Margin, the Class M-5
Pass-Through Margin, the Class M-6 Pass-Through Margin, the Class B-1
Pass-Through Margin, the Class B-2 Pass-Through Margin, the Class B-3
Pass-Through Margin or the Class R Pass-Through Margin.

     Pass-Through Rate: With respect to any class of the LIBOR Certificates on
any Distribution Date, the lesser of (1) One-Month LIBOR plus the related
Pass-Through Margin for such class of Certificates, (2) the Available Funds Cap
and (3) the Maximum Rate Cap.

                                      -43-

<PAGE>

     Percentage Interest: With respect to any Certificate (other than the Class
R and Class P Certificates), a fraction, expressed as a percentage, the
numerator of which is the Initial Certificate Principal Balance represented by
such Certificate and the denominator of which is the Initial Certificate
Principal Balance of the related Class. With respect to the Class R and Class P
Certificates, the Percentage Interest evidenced thereby shall be as specified on
the face thereof, or otherwise, be equal to 100%.

     Periodic Rate Cap: With respect to each Mortgage Loan, the maximum
adjustment that can be made to the Mortgage Interest Rate on each Interest
Adjustment Date in accordance with its terms, regardless of changes in the
applicable Index.

     Permitted Investments: Any one or more of the following obligations or
securities held in the name of the Trustee for the benefit of the
Certificateholders (provided that such obligation or security must be a
"permitted investment" within the meaning of such term as provided for in
Section 860G(a)(5) of the Code):

          (i) direct obligations of, and obligations the timely payment of which
     are fully guaranteed by the United States of America or any agency or
     instrumentality of the United States of America the obligations of which
     are backed by the full faith and credit of the United States of America;

          (ii) (a) demand or time deposits, federal funds or bankers'
     acceptances issued by any depository institution or trust company
     incorporated under the laws of the United States of America or any state
     thereof (including the Trustee or the Master Servicer or its Affiliates
     acting in its commercial banking capacity) and subject to supervision and
     examination by federal and/or state banking authorities, provided that the
     commercial paper and/or the short-term debt rating and/or the long-term
     unsecured debt obligations of such depository institution or trust company
     at the time of such investment or contractual commitment providing for such
     investment have the Applicable Credit Rating or better from each Rating
     Agency and (b) any other demand or time deposit or certificate of deposit
     that is fully insured by the Federal Deposit Insurance Corporation;

          (iii) repurchase obligations with respect to (a) any security
     described in clause (i) above or (b) any other security issued or
     guaranteed by an agency or instrumentality of the United States of America,
     the obligations of which are backed by the full faith and credit of the
     United States of America, in either case entered into with a depository
     institution or trust company (acting as principal) described in clause
     (ii)(a) above where the Trustee holds the security therefor;

          (iv) securities bearing interest or sold at a discount issued by any
     corporation (including the Trustee, the Securities Administrator or the
     Master Servicer or its Affiliates) incorporated under the laws of the
     United States of America or any state thereof that have the Applicable
     Credit Rating or better from each Rating Agency at the time of such
     investment or contractual commitment providing for such investment;
     provided, however, that securities issued by any particular corporation
     will not be Permitted Investments to the extent that investments therein
     will cause the then outstanding principal amount of securities issued by
     such corporation and held as part of

                                      -44-

<PAGE>

     the Issuing Entity to exceed 10% of the aggregate Outstanding Principal
     Balances of all the Mortgage Loans and Permitted Investments held as part
     of the Issuing Entity;

          (v) commercial paper (including both non-interest-bearing discount
     obligations and interest-bearing obligations payable on demand or on a
     specified date not more than one year after the date of issuance thereof)
     having the Applicable Credit Rating or better from each Rating Agency at
     the time of such investment;

          (vi) a Reinvestment Agreement issued by any bank, insurance company or
     other corporation or entity;

          (vii) any other demand, money market or time deposit, obligation,
     security or investment as may be acceptable to either Rating Agency as
     evidenced in writing by each Rating Agency to the Trustee, the Securities
     Administrator or Master Servicer;

          (viii) any money market or common trust fund having the Applicable
     Credit Rating or better from each Rating Agency (if such fund is rated by
     each such Rating Agency), including any such fund for which the Trustee,
     Securities Administrator or Master Servicer or any affiliate of the
     Trustee, Securities Administrator or Master Servicer acts as a manager or
     an advisor; provided, however, that no instrument or security shall be a
     Permitted Investment if such instrument or security evidences a right to
     receive only interest payments with respect to the obligations underlying
     such instrument or if such security provides for payment of both principal
     and interest with a yield to maturity in excess of 120% of the yield to
     maturity at par or if such instrument or security is purchased at a price
     greater than par; and

          (ix) units of a taxable money-market portfolio having the highest
     rating assigned by each Rating Agency (except 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.

     Permitted Transferee: Any Person other than a Disqualified Organization or
an "electing large partnership" (as defined by Section 775 of the Code).

     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 Certificate: The Residual Certificate.

     Pooling and Servicing Agreement: This Pooling and Servicing Agreement,
dated July 1, 2007, relating to the Mortgage Pass-Through Certificates, MANA
Series 2007-OAR4.

     Posted Collateral: Collateral posted pursuant to and in accordance with the
terms and provisions of the Swap Agreement.

                                      -45-

<PAGE>

     Preliminary Statement: The paragraphs in the preamble to this Agreement
that precede Article I.

     Prepayment Charge: Any prepayment premium or fee payable by a Mortgagor in
connection with any Principal Prepayment on a Mortgage Loan pursuant to the
terms of the related Mortgage Note or Mortgage, as applicable.

     Prepayment Charge Mortgage Loans: Any of the Mortgage Loans that are
subject to existing prepayment charges.

     Prepayment Interest Shortfall: As to any Distribution Date and any Mortgage
Loan (other than a Mortgage Loan relating to an REO Property) that was the
subject of (a) a Principal Prepayment in Full during the related Prepayment
Period, an amount equal to the excess of one month's interest at the Net
Mortgage Rate on the Stated Principal Balance of such Mortgage Loan over the
amount of interest (adjusted to the Net Mortgage Rate) paid by the Mortgagor for
such Prepayment Period to the date of such Principal Prepayment in Full or (b) a
Curtailment during the prior calendar month, an amount equal to one month's
interest at the Net Mortgage Rate on the amount of such Curtailment. The
obligations of the Master Servicer in respect of any Prepayment Interest
Shortfall are set forth in Section 6.05.

     Prepayment Period: With respect to any Mortgage Loan and any Distribution
Date, with respect to prepayments and other payments received in connection
therewith, either the calendar month preceding the month in which such
Distribution Date occurs or the period commencing on the second day of the month
preceding the month of such Distribution Date and ending on the first day of the
month of such Distribution Date (or, in the case of the first Distribution Date,
beginning on the Cut-off Date).

     Primary Mortgage Insurance Policy: Any primary mortgage guaranty insurance
policy issued in connection with a Mortgage Loan which provides compensation to
a Mortgage Note holder in the event of default by the obligor under such
Mortgage Note or the related Security Instrument, if any or any replacement
policy therefor through the related Accrual Period for such Class relating to a
Distribution Date.

     Principal Distribution Amount: with respect to each Distribution Date, the
sum of (1) the Principal Funds for such Distribution Date and (2) any Extra
Principal Distribution Amount for such Distribution Date.

     Principal Funds: With respect to any Distribution Date and the Mortgage
Loans, the sum, without duplication, of (1) the principal due during the related
Due Period and received before the related Servicer Remittance Date or advanced
by the Servicers as an Advance on or before the related Servicer Remittance
Date, (2) Principal Prepayments in Full collected in the related Prepayment
Period, (3) the Stated Principal Balance of each Mortgage Loan that was
purchased by the Depositor or the applicable Servicer during the related
Prepayment Period or, in the case of a purchase in connection with an optional
termination, on the Business Day prior to such Distribution Date, (4) the
amount, if any, by which the aggregate unpaid principal balance of any
replacement Mortgage Loans is less than the aggregate unpaid principal balance
of any Mortgage Loans delivered by the Sponsor during the related Prepayment
Period in connection with a

                                      -46-

<PAGE>

substitution of a Mortgage Loan, (5) all Liquidation Proceeds applicable to the
related Prepayment Period (to the extent such Liquidation Proceeds related to
principal), (6) all Subsequent Recoveries received applicable to the related
Prepayment Period and (7) all other collections and recoveries in respect of
principal applicable to the related Prepayment Period and less (A) all
non-recoverable Advances relating to principal and all non-recoverable Servicing
Advances reimbursed during the applicable reimbursement period, (B)
indemnification amounts and expenses reimbursable to the Trustee, Securities
Administrator, Master Servicer and the Servicers hereunder and (C) the lesser of
(i) the aggregate amount of items (2), (3), (4) and (5) above collected during
the related Prepayment Period and (ii) the aggregate amount of Negative
Amortization during the related Prepayment Period.

     Principal Prepayment: Any Principal Prepayment in Full or Curtailment or
other recovery of principal on a Mortgage Loan which is received in advance of
its scheduled Due Date to the extent that it is not accompanied by an amount as
to interest representing scheduled interest due on any date or dates in any
month or months subsequent to the month of prepayment, including Insurance
Proceeds and Repurchase Proceeds, but excluding the principal portion of Net
Liquidation Proceeds.

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

     Prospectus Supplement: The Prospectus Supplement dated August 9, 2007,
relating to the public offering of the Offered Certificates.

     PUD: A Planned Unit Development.

     Purchase Price: With respect to any Mortgage Loan or REO Property to be
purchased pursuant to or as contemplated by Section 2.03 or 10.01, and as
confirmed by an Officers' Certificate from the Master Servicer to the Trustee,
an amount equal to the sum of (i) 100% of the Stated Principal Balance thereof
as of the date of purchase (or such other price as provided in Section 10.01),
(ii) accrued interest on such Stated Principal Balance at the applicable
Mortgage Interest Rate in effect from time to time from the Due Date as to which
interest was last covered by a payment by the Mortgagor or an advance by the
applicable Servicer or Master Servicer, which payment or advance had as of the
date of purchase been distributed to Certificateholders, through the end of the
calendar month in which the purchase is to be effected less any unreimbursed
Advances and any unpaid Servicing Fees payable to the purchaser of the Mortgage
Loan and (iii) any costs and damages incurred by the Issuing Entity in
connection with any violation by such Mortgage Loan or REO Property of any
predatory or abusive-lending law.

     Rating Agencies: Moody's, and S&P.

     Rating Agency Condition: As defined in the Swap Agreement.

     Realized Loss: With respect to a Liquidated Mortgage Loan, the amount by
which the remaining unpaid principal balance of the Mortgage Loan exceeds the
amount of Net Liquidation Proceeds applied to the principal balance of the
related Mortgage Loan. To the extent the Master 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 to the extent such recoveries

                                      -47-

<PAGE>

are applied to reduce the Certificate Principal Balance of any Class of
Certificates on any Distribution Date.

     Realized Loss Amount: With respect to any Distribution Date, the amount, if
any, by which the aggregate Certificate Principal Balance of the Certificates
after distributions of principal on such Distribution Date exceeds the aggregate
Stated Principal Balance of the Mortgage Loans as of such Distribution Date.

     Record Date: With respect to each Distribution Date and each class of
Offered Certificates, the close of business on the last Business Day of the
month immediately preceding the month in which the related Distribution Date
occurs (or the Closing Date in the case of the first Distribution Date).

     Regular Certificates: Any of the Class A-1, Class A-2, Class A-3, Class
M-1, Class M-2, Class M-3, Class M-4, Class M-5, Class M-6, Class B-1, Class B-2
or Class B-3 Certificates.

     Regulation AB: Subpart 22.1100 - Asset Backed Securities (Regulation AB),
17 C.F.R. Sections 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. 1,506-1,631 (January 7, 2005) or by the staff
of the Commission, or as may be provided by the Commission or its staff from
time to time.

     Reinvestment Agreements: One or more reinvestment agreements, acceptable to
each of the Rating Agencies, from a bank, insurance company or other corporation
or entity (including the Trustee).

     Related Certificates: For each interest in the Upper Tier REMIC, the Class
of Certificates listed on the same row in the table entitled "Upper Tier REMIC"
in the Preliminary Statement.

     Relevant Servicing Criteria: The Servicing Criteria applicable to the
various parties, as set forth on Exhibit K hereto. For clarification purposes,
multiple parties can have responsibility for the same Relevant Servicing
Criteria. With respect to a Servicing Function Participant engaged by the Master
Servicer, the Securities Administrator, the Trustee, the Custodian or a
Servicer, the term "Relevant Servicing Criteria" may refer to one or more
discrete functions specified in the Relevant Servicing Criteria applicable to
such parties.

     Relief Act: The Servicemembers Civil Relief Act, as amended, or similar
state statute.

     Relief Act Mortgage Loan: Any Mortgage Loan as to which the Monthly Payment
or portion thereof has been reduced or postponed due to the application of the
Relief Act.

     Relief Act Shortfall: With respect to any Distribution Date and any
Mortgage Loan, any reduction in the amount of interest or principal collectible
on such Mortgage Loan for the most recently ended calendar month as a result of
the application of the Relief Act.

                                      -48-

<PAGE>

     REMIC: Each pool of assets in the Trust Fund designated as a REMIC as
described in the Preliminary Statement and Section 9.12.

     REMIC 1: Not applicable.

     REMIC 1 Interest: Not applicable.

     REMIC 1 Regular Interest: Not applicable.

     REMIC 1 Subordinate Balance Ratio: Not applicable.

     REMIC 2: Not applicable.

     REMIC 2 Interest: Not applicable.

     REMIC 2 Regular Interest: Not applicable.

     REMIC Opinion: An Opinion of Counsel to the effect that a contemplated
action will neither adversely affect the status as a REMIC of any REMIC created
hereunder nor subject any such REMIC to any tax under the REMIC Provisions.

     REMIC Pass-Through Rate: In the case of a Class of the Senior Certificates,
Class M Certificates and Class B Certificates, the Upper Tier REMIC Net WAC Cap
for the Corresponding REMIC Regular Interest.

     REMIC Provisions: The 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, including proposed regulations and rulings, and administrative
pronouncements promulgated thereunder, as the foregoing may be in effect from
time to time.

     REMIC Regular Interests: Each of the interests in the Upper Tier REMIC as
set forth in the Preliminary Statement other than the Residual Interest.

     REMIC Swap Rate: For each Distribution Date (and the related Accrual
Period), a per annum rate equal to the Fixed Rate under the Swap Agreement for
such Distribution Date, as set forth in the Prospectus Supplement.

     REO Property: A Mortgaged Property acquired by a Servicer or Master
Servicer on behalf of the Trust Fund through foreclosure or deed-in-lieu of
foreclosure, as described in Section 3.15 in connection with a defaulted
Mortgage Loan.

     Reportable Event: As defined in Section 3.18(a).

     Reporting Servicer: As defined in Section 3.18(h).

     Repurchase Proceeds: The Repurchase Price in connection with any repurchase
of a Mortgage Loan by the Sponsor and any cash deposit in connection with the
substitution of a Mortgage Loan.

                                      -49-

<PAGE>

     Request for Release: A request for release in the form attached hereto as
Exhibit D.

     Required Insurance Policy: With respect to any Mortgage Loan, any insurance
policy which is required to be maintained from time to time under this Agreement
with respect to such Mortgage Loan.

     Required Percentage: With respect to a Distribution Date, the quotient of
(x) the excess of (1) the aggregate Stated Principal Balance of the Mortgage
Loans as of the prior Distribution Date, prior to giving effect to distributions
to be made on such Distribution Date over (2) the Certificate Principal Balance
of the most senior class of Certificates outstanding as of such Distribution
Date, prior to giving effect to distributions to be made on such Distribution
Date, and (y) the aggregate Stated Principal Balances of the Mortgage Loans as
of the prior Distribution Date, prior to giving effect to distributions to be
made on such Distribution Date. As used herein, the Certificate Principal
Balance of the most senior class of Certificates will equal the aggregate
Certificate Principal Balance of the Senior Certificates as of such date of
calculation.

     Reserve Interest Rate: The rate per annum that the Securities Administrator
determines to be either (1) the arithmetic mean (rounded upwards if necessary to
the nearest whole multiple of 0.03125%) of the one-month United States dollar
lending rates which New York City banks selected by the Securities Administrator
are quoting on the relevant Interest Determination Date to the principal London
offices of leading banks in the London interbank market or (2) in the event that
the Securities Administrator can determine no such arithmetic mean, the lowest
one-month United States dollar lending rate which New York City banks selected
by the Securities Administrator are quoting on such Interest Determination Date
to leading European banks.

     Residual Certificate: The Class R Certificate.

     Residual Interest: An interest in the Upper Tier REMIC that is entitled to
all distributions of principal and interest on the Class R Certificate other
than (i) distributions in respect of the Class SWR Interest and the Class LTR
Interest and (ii) distributions on the Class R Certificate in respect of Excess
Interest.

     Responsible Officer: Any officer assigned to the Corporate Trust Office (or
any successor thereto), including any Vice President, Assistant Vice President,
Trust Officer, any Assistant Secretary, any trust officer or any other officer
of the Trustee or Securities Administrator customarily performing functions
similar to those performed by any of the above designated officers and having
direct responsibility for the administration of this Agreement, and any other
officer of the Trustee or Securities Administrator to whom a matter arising
hereunder may be referred because of such officers familiarity with the subject
matter thereof.

     Responsible Servicing Officer: Any officer of a Servicer involved in, or
responsible for, the administration and servicing of the Mortgage Loans.

     Reuters: Reuters Monitor Money Rates Service.

                                      -50-

<PAGE>

     Reuter's Screen LIBO Page: The display designated as page "LIBO" on Reuters
(or such other page as may replace the LIBO page on that service for the purpose
of displaying London interbank offered rates of major banks).

     RFC: Residential Funding Company, LLC.

     Sarbanes-Oxley Act: 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).

     Sarbanes-Oxley Certification: A written certification signed by an officer
of the Master Servicer that complies with (i) the Sarbanes-Oxley Act, and (ii)
Exchange Act Rules 13a-14(d) and 15d-14(d), as in effect from time to time;
provided that if, after the Closing Date (a) the Sarbanes-Oxley Act is amended,
(b) the Rules referred to in clause (ii) are modified or superseded by any
subsequent statement, rule or regulation of the Commission or any statement of a
division thereof, or (c) any future releases, rules and regulations are
published by the Commission from time to time pursuant to the Sarbanes-Oxley
Act, which in any such case affects the form or substance of the required
certification and results in the required certification being, in the reasonable
judgment of the Master Servicer, materially more onerous that then form of the
required certification as of the Closing Date, the Sarbanes-Oxley Certification
shall be as agreed to by the Master Servicer and the Depositor following a
negotiation in good faith to determine how to comply with any such new
requirements.

     S&P: Standard and Poor's, a division of The McGraw-Hill Companies, Inc. or
its successor in interest.

     Scheduled Payment: With respect to any Mortgage Loan and any month, the
scheduled payment or payments of principal and interest due during such month on
such Mortgage Loan which either is payable by a Mortgagor in such month under
the related Mortgage Note or, in the case of REO Property, would otherwise have
been payable under the related Mortgage Note as a Minimum Payment.

     Scheduled Principal: The principal portion of any Scheduled Payment.

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

     Securities Administrator: Wells Fargo Bank, N.A., or any successor in
interest, or any successor securities administrator appointed as herein
provided.

     Security Agreement: With respect to a Cooperative Loan, the agreement
creating a security interest in favor of the originator in the related
Cooperative Stock.

     Security Instrument: A written instrument creating a valid first lien on a
Mortgaged Property securing a Mortgage Note, which may be any applicable form of
mortgage, deed of trust, deed to secure debt or security deed, including any
riders or addenda thereto.

                                      -51-

<PAGE>

     Senior Certificate Principal Balance: As of any date of determination, the
sum of the Class A-1 Certificate Principal Balance, the Class A-2 Certificate
Principal Balance, the Class A-3 Certificate Principal Balance and the Class R
Certificate Principal Balance.

     Senior Certificates: Any of the Class A-1 Certificates, the Class A-2
Certificates, the Class A-3 Certificates and the Class R Certificates.

     Senior Principal Distribution Amount: (1) With respect to any Distribution
Date prior to the related Stepdown Date or as to which a Stepdown Trigger Event
exists, 100% of the Principal Distribution Amount for such Distribution Date and
(2) with respect to any Distribution Date on or after the Stepdown Date and as
to which a Stepdown Trigger Event does not exist, the excess of (A) the
Certificate Principal Balance of the Senior Certificates after the allocation of
Deferred Interest, if any, for each Distribution Date and immediately prior to
such Distribution Date over (B) the lesser of (i) (a) for each Distribution Date
on or prior to July 2013, 70.375% of the aggregate Stated Principal Balance of
the Mortgage Loans as of such Distribution Date and (b) for each Distribution
Date after July 2013, 76.300% of the aggregate Stated Principal Balance of the
Mortgage Loans as of such Distribution Date and (ii) the excess of the aggregate
Stated Principal Balance of the Mortgage Loans as of such Distribution Date over
the Minimum Required Overcollateralization Amount; provided, however, that in no
event will the Senior Principal Distribution Amount with respect to any
Distribution Date exceed the aggregate Certificate Principal Balance of the
Senior Certificates.

     Servicer: With respect to (i) each Mortgage Loan serviced by Residential
Funding Company, LLC, as specified on the Mortgage Loan Schedule, Residential
Funding Company, LLC, (ii) each Mortgage Loan serviced by IndyMac Bank, F.S.B.,
as specified on the Mortgage Loan Schedule, IndyMac Bank, F.S.B. and (iii) each
Mortgage Loan serviced by Central Mortgage Company, as specified on the Mortgage
Loan Schedule, Central Mortgage Company, and their respective successors and
assigns.

     Servicer Remittance Date: With respect to (A) RFC, the 18th day of each
month or, if such 18th day is not a Business Day, on the immediately succeeding
Business Day of the month in which the related Distribution Date occurs or (B)
with respect to IndyMac Bank and CMC, the 18th day of each month or, if such
18th day is not a Business Day, the immediately preceding Business Day of the
month in which the related Distribution Date occurs.

     Servicing Advances: All customary, reasonable and necessary "out of pocket"
costs and expenses incurred in the performance by a Servicer of its servicing
obligations hereunder, including, but not limited to, the cost of (1) the
preservation, inspection, restoration and protection of a Mortgaged Property,
including without limitation advances in respect of prior liens, real estate
taxes and assessments, (2) any collection, enforcement or judicial proceedings,
including without limitation foreclosures, collections and liquidations, (3) the
conservation, management, sale and liquidation of any REO Property, (4)
executing and recording instruments of satisfaction, deeds of reconveyance,
substitutions of trustees on deeds of trust or Assignments of Mortgage to the
extent not otherwise recovered from the related Mortgagors or payable under this
Agreement, (5) correcting errors of prior servicers; costs and expenses charged
to such Servicer by the Trustee; tax tracking; title research; flood
certifications; and lender paid mortgage insurance and (6) obtaining or
correcting any legal documentation required to be

                                      -52-

<PAGE>

included in the Mortgage Files and reasonably necessary for the Servicer to
perform its obligations under this Agreement.

     Servicing Criteria: The "servicing criteria" set forth in Item 1122(d) of
Regulation AB, as such may be amended from time to time.

     Servicing Fee: As to any Mortgage Loan and Distribution Date, an amount
equal to the product of (i) the Stated Principal Balance of such Mortgage Loan
as of the preceding Distribution Date and (ii) the applicable Servicing Fee
Rate. Such fee shall be payable monthly, computed on the basis of the same
principal amount and period respectively which any related interest payment on a
Mortgage Loan is computed. If the Index and/or Gross Margin are adjusted as
provided in the related Mortgage Note, the Servicing Fee shall be the rate per
annum in effect immediately prior to such adjustment.

     Servicing Fee Rate: 0.375% per annum.

     Servicing Function Participant: Any Subservicer, Subcontractor or any other
Person engaged by a Servicer, the Custodian, the Master Servicer, the Paying
Agent, the Securities Administrator or the Trustee required by Regulation AB to
provide an Assessment of Compliance and an Accountant's Attestation.

     Servicing Officer: Any officer of the Master Servicer involved in, or
responsible for, the administration and servicing of the Mortgage Loans whose
names and specimen signatures appear on a list of servicing officers furnished
to the Trustee by the Master Servicer, as such list may be amended from time to
time.

     Significance Estimate: With respect to any Distribution Date, and in
accordance with Item 1115 of Regulation AB, shall be an amount determined based
on the reasonable good-faith estimate by the Depositor or its affiliate (and
reported to the Securities Administrator) of the aggregate maximum probable
exposure of the outstanding Certificates to the Swap Agreement and the Corridor
Contract, as applicable.

     Significance Percentage: With respect to any Distribution Date, and in
accordance with Item 1115 of Regulation AB, shall be a percentage equal to the
Significance Estimate divided by the aggregate outstanding Stated Principal
Balance of the Mortgage Loans, prior to the distribution of the Principal
Distribution Amount on such Distribution Date.

     Sponsor: Merrill Lynch Mortgage Lending, Inc., a Delaware corporation, or
any successor in interest.

     Startup Day: The Closing Date.

     Stated Principal Balance: With respect to any Mortgage Loan and
Distribution Date, the unpaid principal balance of such Mortgage Loan as of the
Due Date in the related Due Period, 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 any previous partial prepayments and Net Liquidation Proceeds received
and to the payment of principal due on such Due Date and irrespective of any
delinquency in payment

                                      -53-
<PAGE>

by the related Mortgagor and as increased by the amounts of any Negative
Amortization with respect to such Mortgage Loan after the Cut-off Date through
the Due Date in the related Due Period. With respect to any Mortgage Loan and
the Cut-off Date, the Cut-off Date Principal Balance thereof.

     Stepdown Date: The earlier of: (A) the first Distribution Date on which the
aggregate Certificate Principal Balance of the Senior Certificates has been
reduced to zero and (B) the first Distribution Date on which the aggregate
Certificate Principal Balance of the Senior Certificates (after giving effect to
distributions of the Principal Funds amount for such Distribution Date) is less
than or equal to (i) 70.375% of the aggregate Stated Principal Balance of the
Mortgage Loans (if such Distribution Date is on or prior to July 2013) or (ii)
76.300% of the aggregate Stated Principal Balance of the Mortgage Loans (if such
Distribution Date is on or after July 2013); notwithstanding the foregoing, the
Stepdown Date calculated pursuant to clause (B) shall not occur prior to August
2010.

     Stepdown Required Loss Percentage: For any Distribution Date, the
applicable percentage for such Distribution Date set forth in the following
table:

<TABLE>
<CAPTION>
     DISTRIBUTION DATE                     STEPDOWN REQUIRED
       OCCURRING IN                         LOSS PERCENTAGE
--------------------------   ------------------------------------------
<S>                          <C>
August 2009 - July 2010      0.25% with respect to August 2009, plus an
                             additional 1/12th of 0.40% for each month
                             thereafter
August 2010 - July 2011      0.65% with respect to August 2010, plus an
                             additional 1/12th of 0.50% for each month
                             thereafter
August 2011 - July 2012      1.15% with respect to August 2011, plus an
                             additional 1/12th of 0.50% for each month
                             thereafter
August 2012 - July 2013      1.65% with respect to August 2012, plus an
                             additional 1/12th of 0.60% for each month
                             thereafter
August 2013 - July 2014      2.25% with respect to August 2013, plus an
                             additional 1/12th of 0.25% for each month
                             thereafter
August 2014 and thereafter   2.50%
</TABLE>

     Stepdown Trigger Event: The situation that exists with respect to any
Distribution Date on or after the Stepdown Date, if (a) the quotient (measured
on a rolling three-month basis) of (1) the aggregate Stated Principal Balance of
all Mortgage Loans 60 or more days delinquent (including Mortgage Loans in
foreclosure, REO properties and Mortgage Loans with respect to which the
applicable mortgagor is in bankruptcy) and (2) the Stated Principal Balance of
all of the Mortgage Loans as of the preceding Servicer Remittance Date, equals
or exceeds the product of (i) (a) on or prior to the Distribution Date in July
2013, 23.62% or (b) after the Distribution Date in July 2013, 29.53% and (ii)
the Required Percentage or (b) the quotient (expressed as a percentage) of (1)
the aggregate Realized Losses incurred from the Cut-off Date through the last

                                      -54-

<PAGE>

day of the calendar month preceding such Distribution Date and (2) the aggregate
principal balance of the Mortgage Loans as of the Cut-off Date exceeds the
Stepdown Required Loss Percentage. For purposes hereof, for any Distribution
Date, the calculation of "rolling three-month basis" requires first, the
calculation of the quotient described in (a) of this definition for each of the
three (3) Due Periods immediately prior to such Distribution Date, second, the
addition of such 3 quotients and third, dividing the sum of such 3 quotients by
3.

     Subcontractor: Any vendor, subcontractor or other Person that is not
responsible for the overall servicing of Mortgage Loans but performs one or more
discrete functions identified in Item 1122(d) of Regulation AB with respect to
Mortgage Loans under the direction or authority of any Servicer (or a
Subservicer of any Servicer), the Master Servicer, the Custodian or the
Securities Administrator.

     Subsequent Recoveries: Any amount recovered by a Servicer or the Master
Servicer (net of reimbursable expenses) with respect to a Liquidated Mortgage
Loan with respect to which a Realized Loss was incurred after the liquidation or
disposition of such Mortgage Loan.

     Subservicer: Any Person that services Mortgage Loans on behalf of a
Servicer, and is responsible for the performance (whether directly or through
subservicers or Subcontractors) of servicing functions required to be performed
under this Agreement or any subservicing agreement that are identified in Item
1122(d) of Regulation AB.

     Substitute Mortgage Loan: With respect to any Mortgage Loan, which is
tendered to the Trustee pursuant to this Agreement, the related Mortgage Loan
Purchase Agreement or Section 2.04 of this Agreement, as applicable, in each
case, (i) which has an Outstanding Principal Balance not greater nor materially
less than the Mortgage Loan for which it is to be substituted; (ii) which has a
Mortgage Interest Rate and Net Rate not less than, and not materially greater
than, such Mortgage Loan; (iii) which has a maturity date not materially earlier
or later than such Mortgage Loan and not later than the latest maturity date of
any Mortgage Loan; (iv) which is of the same property type and occupancy type as
such Mortgage Loan; (v) which has a Loan-to-Value Ratio not greater than the
Loan-to-Value Ratio of such Mortgage Loan; (vi) which is current in payment of
principal and interest as of the date of substitution; (vii) as to which the
payment terms do not vary in any material respect from the payment terms of the
Mortgage Loan for which it is to be substituted and (viii) which has a Gross
Margin, Periodic Rate Cap and Maximum Lifetime Mortgage Rate no less than those
of such Mortgage Loan, has the same Index and interval between Interest
Adjustment Dates as such Mortgage Loan, and a Minimum Lifetime Mortgage Rate no
lower than that of such Mortgage Loan.

     Subordinate Certificates: Any of the Class M and the Class B Certificates.

     Supplemental Interest Trust: The separate trust, established pursuant to
Section 6.01(m) of this Agreement and held by the Securities Administrator for
the benefit of the holders of the Certificates as a segregated subtrust of the
Trust Fund, (i) in which the Swap Agreement will be held, any Swap Termination
Payments or Net Swap Payments received from the Swap Counterparty will be
deposited as set forth in Section 6.01 hereof and (ii) out of which certain
distributions to the Certificateholders will be made and any Swap Termination
Payments or Net Swap Payments owed to the Swap Counterparty will be paid.

                                      -55-

<PAGE>

     Supplemental Interest Trust Trustee: Wells Fargo Bank, N.A., a national
banking association, not in its individual capacity, but solely in its capacity
as trustee of the Supplemental Interest Trust for the benefit of the
Certificateholders under this Agreement, and any successor thereto, and any
corporation or national banking association resulting from or surviving any
consolidation or merger to which it or its successors may be a party and any
successor trustee as may from time to time be serving as successor trustee
hereunder.

     Swap Account: The separate Eligible Account created and maintained by the
Supplemental Interest Trust Trustee pursuant to Section 6.01(m) in the name of
the Supplemental Interest Trust Trustee for the benefit of the Supplemental
Interest Trust and designated "Wells Fargo Bank, N.A., as supplemental interest
trust trustee, in trust for registered holders of Merrill Lynch Alternative Note
Asset Trust, Series 2007-OAR4." Funds in the Swap Account shall be held in trust
for the Supplemental Interest Trust for the uses and purposes set forth in this
Agreement.

     Swap Agreement: The confirmation and agreement, including the schedule
thereto and the related credit support annex, between the Swap Counterparty and
the trustee of the Supplemental Interest Trust for the benefit of the
Certificateholders (attached as Exhibit R hereto) or any other swap agreement
(including any related schedules) held by the Supplemental Interest Trust
pursuant to Section 6.01(m) hereof.

     Swap Agreement Notional Balance: As defined in the Swap Agreement.

     Swap Counterparty: Morgan Stanley Capital Services Inc., or any successor
counterparty who meets the requirements set forth in the Swap Agreement.

     Swap LIBOR: With respect to any Distribution Date (and the related Accrual
Period) the product of (i) the Floating Rate Option (as defined in the Swap
Agreement for the related Swap Payment Date), (ii) two and (iii) the quotient of
(a) the actual number of days in the Accrual Period for the Lower Tier REMIC
Interests divided by (b) 30.

     Swap Payment Date: For so long as the Swap Agreement is in effect or
amounts remain unpaid thereunder, the Business Day (as defined in the Swap
Agreement) immediately preceding each Distribution Date.

     Swap Posted Collateral Account: The segregated Eligible Account created and
maintained by the Supplemental Interest Trust Trustee pursuant to Section
6.01(m) in the name of the Supplemental Interest Trust Trustee for the benefit
of the Supplemental Interest Trust and designated "Wells Fargo Bank, N.A., as
supplemental interest trust trustee, in trust for registered holders of Merrill
Lynch Alternative Note Asset Trust, Series 2007-OAR4." Funds in the Swap Posted
Collateral Account shall be held in trust for the Supplemental Interest Trust
for the uses and purposes set forth in the Swap Agreement.

     SWAP REMIC: As described in the Preliminary Statement.

     SWAP REMIC Interests: Each of the interests in the SWAP REMIC as set forth
in the Preliminary Statement.

                                      -56-

<PAGE>

     SWAP REMIC Regular Interests: Each of the SWAP REMIC Interests other than
the Class SWR Interest.

     Swap Termination Payment: Any payment payable by the Supplemental Interest
Trust or the Swap Counterparty upon termination of the Swap Agreement determined
in accordance with the Swap Agreement.

     Tax Matters Person: The Securities Administrator or any successor thereto
or assignee thereof shall serve as tax administrator hereunder and as agent for
the Tax Matters Person. The Holder of the Residual Certificates shall be the Tax
Matters Person for the related REMIC, as more particularly set forth in Section
9.12 hereof.

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

     Transferor Representation Letter: As defined in Section 5.02(b).

     Trust Fund: The corpus of the Issuing Entity created pursuant to Article II
of this Agreement.

     Trustee: HSBC Bank USA, National Association, or its successor in interest,
or any successor trustee appointed as herein provided.

     Uncertificated Class C Interest: An uncertificated REMIC Regular Interest
having the characteristics described in the Preliminary Statement.

     Uninsured Cause: Any cause of damage to a Mortgaged Property or related REO
Property such that the complete restoration of such Mortgaged Property or
related REO Property is not fully reimbursable by the hazard insurance policies
required to be maintained pursuant to this Agreement, without regard to whether
or not such policy is maintained.

     United States Person: A citizen or resident of the United States, a
corporation or partnership (including an entity treated as a corporation or
partnership for federal income tax purposes) created or organized in, or under
the laws of, the United States or any state thereof or the District of Columbia
(except, in the case of a partnership, to the extent provided in regulations),
provided that, for purposes solely of the Class R Certificate, no partnership or
other entity treated as a partnership for United States federal income tax
purposes shall be treated as a United States Person unless all persons that own
an interest in such partnership either directly or through any entity that is
not a corporation for United States federal income tax purposes are United
States Persons, or an estate whose income is subject to United States federal
income tax regardless of its source, or 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 such United States Persons have the authority to control
all substantial decisions of the trust. To the extent prescribed in regulations
by the Secretary of the Treasury, which have not yet been issued, a trust which
was in existence on August 20, 1996 (other than a trust treated as owned by the
grantor under subpart E of part I of subchapter J of chapter 1 of the Code), and
which was treated as a United States person on August 20, 1996 may elect to
continue to be treated as a United States person notwithstanding the previous
sentence.

                                      -57-

<PAGE>

     Unpaid Realized Loss Amount: With respect to any class of the Certificates
and as to any Distribution Date, the excess of (1) Applied Realized Loss Amounts
with respect to such class over (2) the sum of (x) all distributions in
reduction of the Unpaid Applied Realized Loss Amounts on all previous
Distribution Dates and (y) all increases in the Certificate Principal Balance of
such class pursuant to the last sentence of the definition of "Certificate
Principal Balance." Any amounts distributed to a class of Certificates in
respect of any Unpaid Realized Loss Amount will not be applied to reduce the
Certificate Principal Balance of such class.

     Upper Collar: With respect to each Distribution Date with respect to which
payments are received on the Corridor Contract, a rate equal to the lesser of
One-Month LIBOR and 5.400% per annum.

     Upper Tier REMIC: As described in the Preliminary Statement and Section
9.12.

     Upper Tier REMIC Net WAC Cap: For any Distribution Date, the Net Rate.

     Voting Rights: The portion of the voting rights of all of the Certificates
which is allocated to any Certificate. The Voting Rights allocated among Holders
of such Certificates outstanding shall be the fraction, expressed as a
percentage, the numerator of which is the aggregate Certificate Principal
Balance of all the Certificates of such Class then outstanding and the
denominator of which is the aggregate Certificate Principal Balance of all the
Certificates then outstanding (other than the Class R Certificate). 99.00% of
all Voting Rights will be allocated among all holders of the Certificates (other
than the Class R Certificate) in proportion to their then outstanding
Certificate Principal Balances, and 1.00% of the Voting Rights shall be
allocated to the Class R Certificate; provided, however, that any Certificate
registered in the name of the Master Servicer, the Depositor or the Securities
Administrator or any of their respective affiliates shall not be included in the
calculation of Voting Rights. The Class P Certificates shall have no voting
rights.

     Wells Fargo: Wells Fargo Bank, N.A., or any successor thereto.

     WHFIT: A "widely held fixed investment trust" as that term is defined in
Treasury Regulations section 1.671-5(b)(22) or successor provisions.

     WHFIT Regulations: Treasury Regulations section 1.671-5, as amended.

     Section 1.02 Accounting.

     Unless otherwise specified herein, for the purpose of any definition or
calculation, whenever amounts are required to be netted, subtracted or added or
any distributions are taken into account such definition or calculation and any
related definitions or calculations shall be determined without duplication of
such functions.

                                      -58-

<PAGE>

                                   ARTICLE II
                         CONVEYANCE OF MORTGAGE LOANS;
                       ORIGINAL ISSUANCE OF CERTIFICATES

     Section 2.01 Conveyance of Mortgage Loans to Trustee.

     (a) The Depositor concurrently with the execution and delivery of this
Agreement, sells, transfers and assigns to the Issuing Entity without recourse
all its right, title and interest in and to (i) the Mortgage Loans identified in
the Mortgage Loan Schedule, including all interest and principal due with
respect to the Mortgage Loans after the Cut-off Date, but excluding any payments
of principal and interest due on or prior to the Cut-off Date; (ii) such assets
as shall from time to time be credited or are required by the terms of this
Agreement or the Applicable Servicing Agreements to be credited to the Master
Servicer Collection Account, (iii) such assets relating to the Mortgage Loans as
from time to time may be held by the Servicers in Collection Accounts, the
Master Servicer in the Master Servicer Collection Account and the Securities
Administrator in the Distribution Account for the benefit of the Trustee on
behalf of the Certificateholders, (iv) any REO Property, (v) the Required
Insurance Policies and any amounts paid or payable by the insurer under any
Insurance Policy (to the extent the mortgagee has a claim thereto), (vi) the
Mortgage Loan Purchase Agreement to the extent provided in Section 2.03(a),
(vii) the Corridor Contract and Corridor Contract Account, (viii) the Swap
Agreement and Swap Account and (ix) any proceeds of the foregoing. Although it
is the intent of the parties to this Agreement that the conveyance of the
Depositor's right, title and interest in and to the Mortgage Loans and other
assets in the Trust Fund pursuant to this Agreement shall constitute a purchase
and sale and not a loan, in the event that such conveyance is deemed to be a
loan, it is the intent of the parties to this Agreement that the Depositor shall
be deemed to have granted to the Trustee a first priority perfected security
interest in all of the Depositor's right, title and interest in, to and under
the Mortgage Loans and other assets in the Trust Fund, and that this Agreement
shall constitute a security agreement under applicable law.

     (b) In connection with the above transfer and assignment, the Depositor
hereby deposits with the Trustee or the Custodian, as its agent, the following
documents or instruments

     (I) with respect to each Mortgage Loan, other than a Cooperative Loan:

          (i) the original Mortgage Note, endorsed in the following form: "Pay
     to the order of HSBC Bank USA, National Association, as Trustee for the
     registered holders of the Merrill Lynch Mortgage Investors, Inc., Mortgage
     Pass-Through Certificates, Series 2007-OAR4, without recourse," with all
     prior and intervening endorsements showing a complete chain of endorsement
     from the originator to the Person so endorsing to the Trustee;

          (ii) the original recorded Mortgage or a copy of the Mortgage
     certified by the public recording office in which such Mortgage has been
     recorded;

          (iii) an original Assignment of the Mortgage executed in the following
     form: "HSBC Bank USA, National Association, as Trustee for the registered
     holders of the

                                      -59-

<PAGE>

     Merrill Lynch Mortgage Investors, Inc., Mortgage Pass-Through Certificates,
     Series 2007-OAR4.

          (iv) the original recorded Assignment or Assignments of the Mortgage
     showing a complete chain of assignment from the originator to the Person
     assigning the Mortgage to the Trustee as contemplated by the immediately
     preceding clause (iii), if applicable and only to the extent available to
     the Depositor with evidence of recording thereon;

          (v) the originals of all assumption, modification, consolidation or
     extension agreements, with evidence of recording thereon, if any;

          (vi) the original of any guarantee executed in connection with the
     Mortgage Note;

          (vii) the original mortgagee title insurance policy;

          (viii) the original of any security agreement, chattel mortgage or
     equivalent document executed in connection with the Mortgage; and

          (ix) the original power of attorney, if applicable.

and (II) with respect to each Mortgage Loan that is a Cooperative Loan:

          (i) the original Mortgage Note, endorsed in the following form: "Pay
     to the order of HSBC Bank USA, National Association, as Trustee for the
     registered holders of the Merrill Lynch Mortgage Investors, Inc., Mortgage
     Pass-Through Certificates, Series 2007-OAR4, without recourse," with all
     prior and intervening endorsements showing a complete chain of endorsement
     from the originator to the Person so endorsing to the Trustee;

          (ii) the original duly executed assignment of Security Agreement to
     the Trustee;

          (iii) the acknowledgment copy of the original executed Form UCC-1 (or
     certified copy thereof) with respect to the Security Agreement, and any
     required continuation statements;

          (iv) the acknowledgment copy of the original executed Form UCC-3 with
     respect to the Security Agreement, indicating the Trustee as the assignee
     of the secured party;

          (v) the stock certificate representing the Cooperative Assets
     allocated to the cooperative unit, with a stock power in blank attached;

          (vi) the original collateral assignment of the proprietary lease by
     Mortgagor to the originator;

                                      -60-

<PAGE>

          (vii) a copy of the recognition agreement;

          (viii) if applicable and to the extent available, the original
     intervening assignments, including warehousing assignments, if any,
     showing, to the extent available, an unbroken chain of the related Mortgage
     Loan to the Trustee, together with a copy of the related Form UCC-3 with
     evidence of filing thereon; and

          (ix) the originals of each assumption, modification or substitution
     agreement, if any, relating to the Mortgage Loan;

provided, however, that in lieu of the foregoing, the Depositor may deliver the
following documents, under the circumstances set forth below: (w) the Depositor
may deliver a Mortgage Note pursuant to (a)(i) and (b)(i) endorsed in blank,
provided that the endorsement is completed within 60 days of the Closing Date;
(x) in lieu of the original Mortgage, assignments to the Trustee or its
Custodian, as applicable, or intervening assignments thereof which have been
delivered, are being delivered or will, upon receipt of recording information
relating to the Mortgage required to be included thereon, be delivered to
recording offices for recording and have not been returned to the Depositor in
time to permit their delivery as specified above, the Depositor may deliver a
true copy thereof with a certification by the Depositor on the face of such
copy, substantially as follows: "Certified to be a true and correct copy of the
original, which has been transmitted for recording"; and (y) in lieu of the
Mortgage, assignment to the Trustee or intervening assignments thereof, if the
applicable jurisdiction retains the originals of such documents (as evidenced by
a certification from the Depositor or the Master Servicer, to such effect) the
Depositor may deliver photocopies of such documents containing an original
certification by the judicial or other governmental authority of the
jurisdiction where such documents were recorded; and provided, further, however,
that in the case of Mortgage Loans which have been prepaid in full after the
Cut-off Date and prior to the Closing Date, the Depositor, in lieu of delivering
the above documents, may deliver to the Trustee or its Custodian, as applicable,
a certification to such effect and shall deposit all amounts paid in respect of
such Mortgage Loans in the Distribution Account on the Closing Date. The
Depositor shall deliver such original documents (including any original
documents as to which certified copies had previously been delivered) to the
Trustee or its Custodian, as applicable, promptly after they are received. As of
the date hereof, recordation of the assignment of the Mortgage Loans to the
Trustee or the Custodian, as applicable, is not required in any state by either
Rating Agency to obtain the initial rating on the Certificates (upon which
statement the Master Servicer, the Trustee and the Custodian may each
conclusively rely).

     If any original Mortgage Note referred to in Section 2.01(b)(I)(i) or
2.01(b)(II)(i) above cannot be located, the obligations of the Depositor to
deliver such documents shall be deemed to be satisfied upon delivery to the
Trustee or its Custodian, as applicable, of a photocopy of such Mortgage Note,
if available, with a lost note affidavit. If any of the original Mortgage Notes
for which a lost note affidavit was delivered to the Trustee or its Custodian,
as applicable, is subsequently located, such original Mortgage Note shall be
delivered to the Trustee or its Custodian, as applicable, within three Business
Days.

     (c) The parties hereto agree that it is not intended that any mortgage loan
be included in the Trust Fund that is, without limitation, a "High Cost Loan" as
defined by the Home

                                      -61-

<PAGE>

Ownership and Equity Protection Act of 1994 or any other applicable
anti-predatory lending laws, including but not limited to (i) a "High-Cost Home
Loan" as defined in the New Jersey Home Ownership Act effective November 27,
2003, (ii) a "High-Cost Home Loan" as defined in the New Mexico Home Loan
Protection Act effective January 1, 2004, (iii) a "High Cost Home Mortgage Loan"
as defined in the Massachusetts Predatory Home Loan Practices Act effective
November 7, 2004 or (iv) a "High-Cost Home Loan" as defined by the Indiana High
Cost Home Loan Law effective January 1, 2005.

     (d) Notwithstanding anything to the contrary contained herein, the parties
hereto acknowledge that the functions of the Trustee with respect to the
custody, acceptance, inspection and release of Mortgage Files, including but not
limited to certain insurance policies and documents contemplated by Section 3.12
of this Agreement, and preparation and delivery of the certifications shall be
performed by the Custodian(s) pursuant to the terms and conditions of the
Custodial Agreement(s).

     Section 2.02 Acceptance of Mortgage Loans by Trustee.

     (a) The Trustee acknowledges the sale, transfer and assignment of the Trust
Fund to it by the Depositor and its receipt thereof, subject to further review
and the exceptions which may be noted pursuant to the procedures described
below, and declares that it, or the Custodian on its behalf, holds the documents
(or certified copies thereof) delivered to it pursuant to Section 2.01,
including a Corridor Contract (the form of which is attached hereto as Exhibit
N), and declares that it will continue to hold those documents and any
amendments, replacements or supplements thereto and all other assets of the
Trust Fund delivered to it as Trustee in trust for the use and benefit of all
present and future Holders of the Certificates. On or before the Closing Date
(or, with respect to any Substitute Mortgage Loan, within five Business Days
after the receipt by the Trustee or Custodian thereof), the Trustee agrees, for
the benefit of the Certificateholders and any NIMs Insurer, to review or cause
to be reviewed by the Custodian on its behalf (under the Custodial Agreement),
each Mortgage File delivered to it and to execute and deliver, or cause to be
executed and delivered, to the Depositor, the Trustee (if delivered by the
Custodian) and any NIMs Insurer on the Closing Date an Initial Certification. In
conducting such review, the Trustee or Custodian will certify as to each
Mortgage Loan listed in the Mortgage Loan Schedule (other than any Mortgage Loan
paid in full or any Mortgage Loan specifically identified in the exception
report annexed thereto as not being covered by such certification), (i) all
documents constituting part of such Mortgage File (other than such documents
described in Section 2.01(b)(I)(iii)) required to be delivered to it pursuant to
this Agreement are in its possession, provided that with respect to the
documents described in Section 2.01(b)(I)(v), (vi), (viii) and (ix) and
2.01(b)(II)(viii) and (ix) to the extent the Trustee or the Custodian on its
behalf has actual knowledge that such documents exist, (ii) such documents have
been reviewed by it and are not torn, mutilated, defaced or otherwise altered
(except if initialed by the obligor) and appear to relate on their face to such
Mortgage Loan, (iii) based on its examination and only as to the foregoing, the
information set forth in the Mortgage Loan Schedule corresponding to the loan
number for the Mortgage Loan, the Mortgagor's name, including the street address
but excluding the zip code, the Mortgage Interest Rate and the original
principal balance of the Mortgage Loan accurately reflects information set forth
in the Mortgage File and (iv) with respect to Mortgage Loans with a Mortgage
Interest Rate subject to adjustment, the Gross Margin, the lifetime cap and the
periodic cap for such Mortgage Loan. In

                                      -62-

<PAGE>

performing any such review, the Trustee, or the Custodian, as its agent, may
conclusively rely on the purported due execution and genuineness of any such
document and on the purported genuineness of any signature thereon.
Notwithstanding anything to the contrary in this Agreement, it is herein
acknowledged that, in conducting such review, the Trustee or the Custodian on
its behalf is under no duty or obligation to inspect, review or examine any such
documents, instruments, certificates or other papers to determine whether they
are genuine, enforceable, or appropriate for the represented purpose or whether
they have actually been recorded or that they are other than what they purport
to be on their face, or to determine whether any Person executing any documents
is authorized to do so or whether any signature is genuine.

     If the Trustee or the Custodian, as its agent, finds any document
constituting part of the Mortgage File not to have been executed or received, or
to be unrelated to the Mortgage Loans identified in Exhibit B or to appear to be
defective on its face, the Trustee or the Custodian, as its agent, shall
promptly notify the Sponsor. In accordance with the Mortgage Loan Purchase
Agreement, the Sponsor shall correct or cure any such defect within ninety (90)
days from the date of notice from the Trustee or the Custodian, as its agent, of
the defect and if the Sponsor fails to correct or cure the defect within such
period, and such defect materially and adversely affects the interests of the
Certificateholders in the related Mortgage Loan, the Trustee, shall enforce the
Sponsor's obligation pursuant to the Mortgage Loan Purchase Agreement, within 90
days from the Trustee's or the Custodian's notification, to purchase such
Mortgage Loan at the Purchase Price; provided that, if such defect will cause
the Mortgage Loan to be other than a "qualified mortgage" as defined in Section
860G(a)(3) of the Code, any such cure or repurchase must occur within 90 days
from the date such breach is discovered; provided, however, that if such defect
relates solely to the inability of the Sponsor to deliver the original Security
Instrument or intervening assignments thereof, or a certified copy because the
originals of such documents, or a certified copy have not been returned by the
applicable jurisdiction, the Sponsor shall not be required to purchase such
Mortgage Loan if the Sponsor delivers such original documents or certified copy
promptly upon receipt, but in no event later than 360 days after the Closing
Date. The foregoing repurchase obligation shall not apply in the event that the
Sponsor cannot deliver such original or copy of any document submitted for
recording to the appropriate recording office in the applicable jurisdiction
because such document has not been returned by such office; provided that the
Sponsor shall instead deliver a recording receipt of such recording office or,
if such receipt is not available, a certificate confirming that such documents
have been accepted for recording, and delivery to the Trustee or the Custodian,
as its agent, shall be effected by the Sponsor within thirty days of its receipt
of the original recorded document.

     (b) No later than 180 days after the Closing Date, the Trustee or the
Custodian, as its agent, will review, for the benefit of the Certificateholders
and any NIMs Insurer, the Mortgage Files delivered to it and will execute and
deliver or cause to be executed and delivered to the Depositor, the Trustee (if
delivered by the Custodian) and any NIMs Insurer a Final Certification. In
conducting such review, the Trustee or the Custodian, as its agent, will certify
as to each Mortgage Loan listed in the Mortgage Loan Schedule (other than any
Mortgage Loan paid in full or any Mortgage Loan specifically identified in the
exception report annexed thereto as not being covered by such certification),
that (i) all documents constituting part of such Mortgage File (other than such
documents described in Section 2.01(b)(I)(v) and (ix)) required to be delivered
to it pursuant to this Agreement are in its possession, provided that with
respect to the documents described in Section 2.01(b)(I)(v), (vi), (viii) and
(ix) and 2.01(b)(II)(viii) and (ix)

                                      -63-

<PAGE>

to the extent the Trustee or the Custodian on its behalf has actual knowledge
that such documents exist, (ii) such documents have been reviewed by it and are
not torn, mutilated, defaced or otherwise altered (except if initialed by the
obligor) and appear regular on their face and relate to such Mortgage Loan,
(iii) based on its examination and only as to the foregoing, the information set
forth in the Mortgage Loan Schedule corresponding to the loan number for the
Mortgage Loan, the Mortgagor's name, including the street address but excluding
the zip code, the Mortgage Interest Rate and the original principal balance of
the Mortgage Loan accurately reflects information set forth in the Mortgage
File. In performing any such review, the Trustee, or the Custodian, as its
agent, may conclusively rely on the purported due execution and genuineness of
any such document and on the purported genuineness of any signature thereon.
Notwithstanding anything to the contrary in this Agreement, it is herein
acknowledged that, in conducting such review, the Trustee or the Custodian on
its behalf is under no duty or obligation (i) to inspect, review or examine any
such documents, instruments, certificates or other papers to determine whether
they are genuine, enforceable, or appropriate for the represented purpose or
whether they have actually been recorded or that they are other than what they
purport to be on their face, or to determine whether any Person executing any
documents is authorized to do so or whether any signature is genuine. If the
Trustee or the Custodian, as its agent, finds any document constituting part of
the Mortgage File not to have been executed or received, or to be unrelated to
the Mortgage Loans identified in Exhibit B or to appear to be defective on its
face, the Trustee or the Custodian, as its agent, shall promptly notify the
Sponsor and any NIMs Insurer. In accordance with the Mortgage Loan Purchase
Agreement, the Sponsor shall correct or cure any such defect within 90 days from
the date of notice from the Trustee or the Custodian of the defect and if the
Sponsor is unable to cure such defect within such period, and if such defect
materially and adversely affects the interests of the Certificateholders in the
related Mortgage Loan, the Trustee shall enforce the Sponsor's obligation under
the Mortgage Loan Purchase Agreement to purchase such Mortgage Loan at the
Purchase Price, provided, however, that if such defect relates solely to the
inability of the Sponsor to deliver the original Security Instrument or
intervening assignments thereof, or a certified copy, because the originals of
such documents, or a certified copy, have not been returned by the applicable
jurisdiction, the Sponsor shall not be required to purchase such Mortgage Loan,
if the Sponsor delivers such original documents or certified copy promptly upon
receipt, but in no event later than 360 days after the Closing Date.

     (c) In the event that a Mortgage Loan is purchased by the Sponsor in
accordance with Sections 2.02(a) or (b) above, the Sponsor shall remit to the
Master Servicer the Purchase Price for deposit in the Master Servicer Collection
Account and the Sponsor shall provide to the Trustee written notification
detailing the components of the Purchase Price. Upon deposit of the Purchase
Price in the Master Servicer Collection Account, the Depositor shall give
written notice thereof to the Trustee and the Custodian and the Trustee or the
Custodian, as its agent (upon receipt of a Request for Release in the form of
Exhibit D attached hereto with respect to such Mortgage Loan), shall release to
the Sponsor the related Mortgage File and the Trustee shall execute and deliver
all instruments of transfer or assignment, without recourse, furnished to it by
the Sponsor as are necessary to vest in the Sponsor title to and rights under
the Mortgage Loan. Such purchase shall be deemed to have occurred on the date on
which the Purchase Price in available funds is received by the Master Servicer.
The Depositor or Master Servicer shall amend the Mortgage Loan Schedule, to
reflect such repurchase and shall promptly notify the Rating Agencies, and any
NIMs Insurer and the Master Servicer of such amendment. The

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<PAGE>

obligation of the Sponsor to repurchase any Mortgage Loan as to which such a
defect in a constituent document exists shall be the sole remedy respecting such
defect available to the Certificateholders, and any NIMs Insurer or to the
Trustee on their behalf.

     Section 2.03 Assignment of Interest in the Mortgage Loan Purchase
Agreement.

     (a) The Depositor hereby assigns to the Trustee, on behalf of the
Certificateholders and any NIMs Insurer, all of its right, title and interest in
the Mortgage Loan Purchase Agreement, including but not limited to Depositor's
rights pursuant to this Agreement (noting that the Sponsor has retained the
right in the event of breach of the representations, warranties and covenants,
if any, with respect to the related Mortgage Loans of the applicable Servicer
under this Agreement to enforce the provisions thereof and to seek all or any
available remedies). The obligations of the Sponsor to substitute or repurchase,
as applicable, a Mortgage Loan shall be the Trustee's and the
Certificateholders' sole remedy for any breach thereof. At the request of the
Trustee, the Depositor shall take such actions as may be necessary to enforce
the above right, title and interest on behalf of the Trustee and the
Certificateholders or shall execute such further documents as the Trustee may
reasonably require in order to enable the Trustee to carry out such enforcement.
With respect to the representations and warranties described in the Mortgage
Loan Purchase Agreement that are made to the best of the Sponsor's knowledge, if
it is discovered by any of the Depositor, the Sponsor, the Master Servicer, a
Servicer, the Securities Administrator or the Trustee that the substance of such
representation and warranty is inaccurate and such inaccuracy materially and
adversely affects the value of the related Mortgage Loan, then notwithstanding
the Sponsor's lack of knowledge with respect to the substance of such
representation and warranty, such inaccuracy shall be deemed a breach of the
applicable representation or warranty.

     (b) If the Depositor, the Master Servicer, Securities Administrator, any
NIMs Insurer or the Trustee discovers a breach of any of the representations and
warranties set forth in the Mortgage Loan Purchase Agreement, which breach
materially and adversely affects the value of the interests of
Certificateholders, any NIMs Insurer or the Trustee in the related Mortgage
Loan, the party discovering the breach shall give prompt written notice of the
breach to the other parties. The Sponsor, within 90 days of its discovery or
receipt of notice that such breach has occurred (whichever occurs earlier),
shall cure the breach in all material respects or, subject to the Mortgage Loan
Purchase Agreement or Section 2.04 of this Agreement, as applicable, shall
purchase the Mortgage Loan or any property acquired with respect thereto from
the Trustee; provided, however, that if there is a breach of any representation
set forth in the Mortgage Loan Purchase Agreement or Section 2.04 of this
Agreement, as applicable, and the Mortgage Loan or the related property acquired
with respect thereto has been sold, then the Sponsor shall pay, in lieu of the
Purchase Price, any excess of the Purchase Price over the Net Liquidation
Proceeds received upon such sale. (If the Net Liquidation Proceeds exceed the
Purchase Price, any excess shall be paid to the Sponsor to the extent not
required by law to be paid to the borrower.) Any such purchase by the Sponsor
shall be made by providing an amount equal to the Purchase Price to the Master
Servicer for deposit in the Master Servicer Collection Account and written
notification detailing the components of such Purchase Price. The Depositor
shall notify the Trustee in writing of the deposit of the Purchase Price and
submit to the Trustee or the Custodian, as its agent, a Request for Release, and
the Trustee shall release, or the Trustee shall cause the Custodian to release,
to the Sponsor the related Mortgage File and the Trustee shall

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<PAGE>

execute and deliver all instruments of transfer or assignment furnished to it by
the Sponsor, without recourse, as are necessary to vest in the Sponsor title to
and rights under the Mortgage Loan or any property acquired with respect
thereto. Such purchase shall be deemed to have occurred on the date on which the
Purchase Price in available funds is received by the Master Servicer. The
Depositor or the Master Servicer shall amend the Mortgage Loan Schedule to
reflect such repurchase and shall promptly notify the Master Servicer and the
Rating Agencies of such amendment. Enforcement of the obligation of the Sponsor
to purchase (or substitute a Substitute Mortgage Loan for) any Mortgage Loan or
any property acquired with respect thereto (or pay the Purchase Price as set
forth in the above proviso) as to which a breach has occurred and is continuing
shall constitute the sole remedy respecting such breach available to the
Certificateholders, any NIMs Insurer or the Trustee on their behalf.

     Section 2.04 Substitution of Mortgage Loans. Notwithstanding anything to
the contrary in this Agreement, in lieu of purchasing a Mortgage Loan pursuant
to the Mortgage Loan Purchase Agreement or Sections 2.02 or 2.03 of this
Agreement, the Sponsor may, no later than the date by which such purchase by the
Sponsor would otherwise be required, tender to the Trustee a Substitute Mortgage
Loan accompanied by a certificate of an authorized officer of the Sponsor that
such Substitute Mortgage Loan conforms to the requirements set forth in the
definition of "Substitute Mortgage Loan" in the Mortgage Loan Purchase Agreement
or this Agreement, as applicable; provided, however, that substitution pursuant
to the Mortgage Loan Purchase Agreement or this Section 2.04, as applicable, in
lieu of purchase shall not be permitted after the termination of the two-year
period beginning on the Startup Day; provided, further, that if the breach would
cause the Mortgage Loan to be other than a "qualified mortgage" as defined in
Section 860G(a)(3) of the Code, any such cure or substitution must occur within
90 days from the date the breach was discovered. The Trustee or the Custodian,
as its agent, shall examine the Mortgage File for any Substitute Mortgage Loan
in the manner set forth in Section 2.02(a) and the Trustee or the Custodian, as
its agent, shall notify the Sponsor, in writing, within five Business Days after
receipt, whether the documents relating to the Substitute Mortgage Loan satisfy
the requirements of the fourth sentence of Section 2.02(a). Within two Business
Days after such notification, the Sponsor shall provide to the Securities
Administrator for deposit in the Distribution Account the amount, if any, by
which the Outstanding Principal Balance as of the next preceding Due Date of the
Mortgage Loan for which substitution is being made, after giving effect to
Scheduled Principal due on such date, exceeds the Outstanding Principal Balance
as of such date of the Substitute Mortgage Loan, after giving effect to
Scheduled Principal due on such date, which amount shall be treated for the
purposes of this Agreement as if it were the payment by the Sponsor of the
Purchase Price for the purchase of a Mortgage Loan by the Sponsor. After such
notification to the Sponsor and, if any such excess exists, upon written
notification of the receipt of such deposit, the Trustee shall accept such
Substitute Mortgage Loan which shall thereafter be deemed to be a Mortgage Loan
hereunder. In the event of such a substitution, accrued interest on the
Substitute Mortgage Loan for the month in which the substitution occurs and any
Principal Prepayments made thereon during such month shall be the property of
the Issuing Entity and accrued interest for such month on the Mortgage Loan for
which the substitution is made and any Principal Prepayments made thereon during
such month shall be the property of the Sponsor. The Scheduled Principal on a
Substitute Mortgage Loan due on the Due Date in the month of substitution shall
be the property of the Sponsor and the Scheduled Principal on the Mortgage Loan
for which the substitution is made due on such Due Date shall be the property of
the Issuing Entity. Upon acceptance of the Substitute Mortgage

                                      -66-

<PAGE>

Loan (and delivery to the Trustee or Custodian of a Request for Release for such
Mortgage Loan), the Trustee shall release to the Sponsor the related Mortgage
File related to any Mortgage Loan released pursuant to the Mortgage Loan
Purchase Agreement or this Section 2.04, as applicable, and shall execute and
deliver all instruments of transfer or assignment, without recourse, in form as
provided to it as are necessary to vest in the Sponsor title to and rights under
any Mortgage Loan released pursuant to the Mortgage Loan Purchase Agreement or
this Section 2.04, as applicable. The Sponsor shall deliver the documents
related to the Substitute Mortgage Loan in accordance with the provisions of the
Mortgage Loan Purchase Agreement or Sections 2.01(b) and 2.02(b) of this
Agreement, as applicable, with the date of acceptance of the Substitute Mortgage
Loan deemed to be the Closing Date for purposes of the time periods set forth in
those Sections. The representations and warranties set forth in the Mortgage
Loan Purchase Agreement shall be deemed to have been made by the Sponsor with
respect to each Substitute Mortgage Loan as of the date of acceptance of such
Mortgage Loan by the Trustee. The Master Servicer shall amend the Mortgage Loan
Schedule to reflect such substitution and shall provide a copy of such amended
Mortgage Loan Schedule to the Trustee, any NIMs Insurer and the Rating Agencies.

     Notwithstanding any other provision of this Agreement, the right to
substitute Mortgage Loans pursuant to this Article II shall be subject to the
additional limitations that no substitution of a Mortgage Loan shall be made
unless the Securities Administrator, any NIMs Insurer and the Trustee shall have
received an Opinion of Counsel (at the expense of the party seeking to make the
substitution) that, under current law, such substitution will not (A) affect
adversely the status of any REMIC established hereunder as a REMIC, or of the
related "regular interests" as "regular interests" in any such REMIC, or (B)
cause any such REMIC to engage in a "prohibited transaction" or prohibited
contribution pursuant to the REMIC provisions.

     Section 2.05 Issuance of Certificates. The Trustee acknowledges the
assignment to it on behalf of the Issuing Entity of the Mortgage Loans and the
other assets comprising the Trust Fund and, concurrently therewith, the
Securities Administrator has signed, and countersigned and delivered to the
Depositor, in exchange therefor, Certificates in such authorized denominations
representing such Percentage Interests as the Depositor has requested. The
Trustee agrees that it will hold the Mortgage Loans and such other assets as may
from time to time be delivered to it segregated on the books of the Trustee in
trust for the benefit of the Certificateholders.

     Section 2.06 Representations and Warranties Concerning the Depositor. The
Depositor hereby represents and warrants to the Trustee, any NIMs Insurer, the
Master Servicer and the Securities Administrator as follows:

          (i) the Depositor (a) is a corporation duly organized, validly
     existing and in good standing under the laws of the State of Delaware and
     (b) is qualified and in good standing as a foreign corporation to do
     business in each jurisdiction where such qualification is necessary, except
     where the failure so to qualify would not reasonably be expected to have a
     material adverse effect on the Depositor's business as presently conducted
     or on the Depositor's ability to enter into this Agreement and to
     consummate the transactions contemplated hereby;

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<PAGE>

          (ii) the Depositor has full corporate power to own its property, to
     carry on its business as presently conducted and to enter into and perform
     its obligations under this Agreement;

          (iii) the execution and delivery by the Depositor of this Agreement
     have been duly authorized by all necessary corporate action on the part of
     the Depositor; and neither the execution and delivery of this Agreement,
     nor the consummation of the transactions herein contemplated, nor
     compliance with the provisions hereof, will conflict with or result in a
     breach of, or constitute a default under, any of the provisions of any law,
     governmental rule, regulation, judgment, decree or order binding on the
     Depositor or its properties or the articles of incorporation or by-laws of
     the Depositor, except those conflicts, breaches or defaults which would not
     reasonably be expected to have a material adverse effect on the Depositor's
     ability to enter into this Agreement and to consummate the transactions
     contemplated hereby;

          (iv) the execution, delivery and performance by the Depositor of this
     Agreement and the consummation of the transactions contemplated hereby do
     not require the consent or approval of, the giving of notice to, the
     registration with, or the taking of any other action in respect of, any
     state, federal or other governmental authority or agency, except those
     consents, approvals, notices, registrations or other actions as have
     already been obtained, given or made;

          (v) this Agreement has been duly executed and delivered by the
     Depositor and, assuming due authorization, execution and delivery by the
     other parties hereto, constitutes a valid and binding obligation of the
     Depositor enforceable against it in accordance with its terms (subject to
     applicable bankruptcy and insolvency laws and other similar laws affecting
     the enforcement of the rights of creditors generally);

          (vi) there are no actions, suits or proceedings pending or, to the
     knowledge of the Depositor, threatened against the Depositor, before or by
     any court, administrative agency, arbitrator or governmental body (i) with
     respect to any of the transactions contemplated by this Agreement or (ii)
     with respect to any other matter which in the judgment of the Depositor
     will be determined adversely to the Depositor and will if determined
     adversely to the Depositor materially and adversely affect the Depositor's
     ability to enter into this Agreement or perform its obligations under this
     Agreement; and the Depositor is not in default with respect to any order of
     any court, administrative agency, arbitrator or governmental body so as to
     materially and adversely affect the transactions contemplated by this
     Agreement; and

          (vii) immediately prior to the transfer and assignment to the Trustee,
     each Mortgage Note and each Mortgage were not subject to an assignment or
     pledge, and the Depositor had good and marketable title to and was the sole
     owner thereof and had full right to transfer and sell such Mortgage Loan to
     the Trustee free and clear of any encumbrance, equity, lien, pledge,
     charge, claim or security interest.

     Section 2.07 Representations and Warranties Concerning the Master Servicer
and Securities Administrator. Wells Fargo Bank, N.A., in its capacity as Master
Servicer and

                                      -68-
<PAGE>

Securities Administrator hereby represents and warrants to the Sponsor, the
Depositor and the Trustee as follows, as of the Closing Date:

          (i) It is a national banking association duly formed, validly existing
     and in good standing under the laws of the United States of America and is
     duly authorized and qualified to transact any and all business contemplated
     by this Agreement to be conducted by the Master Servicer and the Securities
     Administrator, to the extent necessary to ensure its ability to master
     service the Mortgage Loans in accordance with the terms of this Agreement
     and to perform any of its other obligations under this Agreement in
     accordance with the terms hereof;

          (ii) It has the full corporate power and authority to execute, deliver
     and perform, and to enter into and consummate the transactions contemplated
     by this Agreement and has duly authorized by all necessary corporate action
     on its part the execution, delivery and performance of this Agreement; and
     this Agreement, assuming the due authorization, execution and delivery
     hereof by the other parties hereto, constitutes its legal, valid and
     binding obligation, enforceable against it in accordance with its terms,
     except that (a) the enforceability hereof 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.

          (iii) The execution and delivery of this Agreement by it, the
     consummation of any other of the transactions contemplated by this
     Agreement, and the fulfillment of or compliance with the terms hereof are
     in its ordinary course of business and will not (A) result in a material
     breach of any term or provision of its charter or by-laws or (B) materially
     conflict with, result in a material breach, violation or acceleration of,
     or result in a material default under, the terms of any other material
     agreement or instrument to which it is a party or by which it may be bound,
     or (C) constitute a material violation of any statute, order or regulation
     applicable to it of any court, regulatory body, administrative agency or
     governmental body having jurisdiction over it; and it 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 which breach or violation may materially impair its
     ability to perform or meet any of its obligations under this Agreement.

          (iv) No litigation is pending or, to the best of its knowledge,
     threatened, against it that would materially and adversely affect the
     execution, delivery or enforceability of this Agreement or its ability to
     perform any of its other obligations under this Agreement in accordance
     with the terms hereof.

          (v) No consent, approval, authorization or order of any court or
     governmental agency or body is required for its execution, delivery and
     performance of, or compliance with, this Agreement or the consummation of
     the transactions contemplated hereby, or if any such consent, approval,
     authorization or order is required, it has obtained the same.

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<PAGE>

     Section 2.08 [Reserved].

     Section 2.09 Depositor Notification of NIM Notes. The Depositor shall
notify the Servicers, the Master Servicer, the Securities Administrator and the
Custodian in writing (i) when NIM Notes are issued and when all previously
issued NIM Notes are no longer outstanding and (ii) of the contact information
of the NIMs Insurer, if any.

                                   ARTICLE III
                        ADMINISTRATION OF MORTGAGE LOANS

     Section 3.01 Master Servicer. The Master Servicer shall supervise, monitor
and oversee the obligation of the Servicers to service and administer their
respective Mortgage Loans in accordance with the terms of the Applicable
Servicing Agreement and shall have full power and authority to do any and all
things which it may deem necessary or desirable in connection with such master
servicing and administration. In performing its obligations hereunder, the
Master Servicer shall act in a manner consistent with Accepted Master Servicing
Practices. Furthermore, the Master Servicer shall oversee and consult with each
Servicer as necessary from time-to-time to carry out the Master Servicer's
obligations hereunder, shall receive, review and evaluate all reports,
information and other data provided to the Master Servicer by each Servicer and
shall cause each Servicer to perform and observe the covenants, obligations and
conditions to be performed or observed by such Servicer under the Applicable
Servicing Agreement. The Master Servicer shall independently and separately
monitor each Servicer's servicing activities with respect to each related
Mortgage Loan, reconcile the results of such monitoring with such information
provided in the previous sentence on a monthly basis and coordinate corrective
adjustments to the Servicers' and Master Servicer's records, and based on such
reconciled and corrected information, the Master Servicer shall provide such
information to the Securities Administrator as shall be necessary in order for
it to prepare the statements specified in Section 6.03, and prepare any other
information and statements required to be forwarded by the Master Servicer
hereunder. The Master Servicer shall reconcile the results of its monitoring
with the actual remittances of the Servicers to the Master Servicer Collection
Account pursuant to this Agreement.

     If the Master Servicer and the Securities Administrator are the same
entity, then at any time the Master Servicer is terminated as Master Servicer,
the Securities Administrator shall likewise be removed as securities
administrator.

     The Trustee shall furnish the Servicers and the Master Servicer with any
limited powers of attorney and other documents in form acceptable to it
necessary or appropriate to enable the Servicers and the Master Servicer to
service and administer the related Mortgage Loans and REO Property. The Trustee
shall have no liability with respect to the use of any such limited power of
attorney.

     The Trustee or the Custodian shall provide access to the records and
documentation in possession of the Trustee or the Custodian regarding the
related Mortgage Loans and REO Property and the servicing thereof to the
Certificateholders, the FDIC, and the supervisory agents and examiners of the
FDIC, such access being afforded only upon reasonable prior written request and
during normal business hours at the office of the Trustee or the Custodian;
provided,

                                      -70-

<PAGE>

however, that, unless otherwise required by law, the Trustee or the Custodian
shall not be required to provide access to such records and documentation if the
provision thereof would violate the legal right to privacy of any Mortgagor. The
Trustee or the Custodian shall allow representatives of the above entities to
photocopy any of the records and documentation and shall provide equipment for
that purpose at a charge that covers the Trustee's or the Custodian's actual
costs.

     The Trustee shall execute and deliver to the applicable Servicer and the
Master Servicer upon request any court pleadings, requests for trustee's sale or
other documents necessary or desirable to (i) the foreclosure or trustee's sale
with respect to a Mortgaged Property; (ii) any legal action brought to obtain
judgment against any Mortgagor on the Mortgage Note or Security Instrument;
(iii) obtain a deficiency judgment against the Mortgagor; or (iv) enforce any
other rights or remedies provided by the Mortgage Note or Security Instrument or
otherwise available at law or equity.

     Section 3.02 REMIC-Related Covenants. For as long as each REMIC shall
exist, the Trustee and the Securities Administrator shall act in accordance
herewith to assure continuing treatment of such REMIC as a REMIC, and the
Trustee and the Securities Administrator shall comply with any directions of the
Depositor, the applicable Servicer or the Master Servicer to assure such
continuing treatment. In particular, the Trustee shall not (a) sell or permit
the sale of all or any portion of the Mortgage Loans or of any investment of
deposits in an Account unless such sale is as a result of a repurchase of the
Mortgage Loans pursuant to this Agreement or the Trustee and Securities
Administrator have received a REMIC Opinion prepared at the expense of the
Issuing Entity; and (b) other than with respect to a substitution pursuant to
the Mortgage Loan Purchase Agreement or Section 2.04 of this Agreement, as
applicable, accept any contribution to any REMIC after the Startup Day without
receipt of a REMIC Opinion.

     Section 3.03 Monitoring of Servicers.

     (a) The Master Servicer shall be responsible for reporting to the Trustee,
Securities Administrator and the Depositor the compliance by each Servicer with
its duties under the Applicable Servicing Agreement. In the review of each
Servicer's activities, the Master Servicer may rely upon an Officer's
Certificate of the Servicer with regard to such Servicer's compliance with the
terms of the Applicable Servicing Agreement. In the event that the Master
Servicer, in its judgment, determines that a Servicer should be terminated in
accordance with the Applicable Servicing Agreement, or that a notice should be
sent pursuant to the Applicable Servicing Agreement with respect to the
occurrence of an event that, unless cured, would constitute grounds for such
termination, the Master Servicer shall notify the Depositor, Securities
Administrator and the Trustee thereof and the Master Servicer shall issue such
notice or take such other action as it deems appropriate.

     (b) The Master Servicer, for the benefit of the Trustee and the
Certificateholders, shall enforce the obligations of each Servicer under the
Applicable Servicing Agreement, and shall, in the event that a Servicer fails to
perform its obligations in accordance with the Applicable Servicing Agreement,
subject to the preceding paragraph, terminate the rights and obligations of such
Servicer thereunder and act as servicer of the related Mortgage Loans or, if the
Master Servicer is unwilling or unable to act as a Servicer, any NIMs Insurer or
the Master

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<PAGE>

Servicer shall cause the Trustee to appoint a successor servicer selected by the
Master Servicer that is eligible in accordance with the criteria specified in
this Agreement that is reasonably acceptable to the NIMs Insurer (such consent
not to be unreasonably withheld); provided, however, it is understood and
acknowledged by the parties hereto that there will be a period of transition
(not to exceed 90 days) before the actual servicing functions can be fully
transferred to such successor servicer. In either event, such enforcement,
including, without limitation, the legal prosecution of claims and the pursuit
of other appropriate remedies, shall be in such form and carried out to such an
extent and at such time as the Master Servicer, in its good faith business
judgment, would require were it the owner of the related Mortgage Loans. The
Master Servicer shall pay the costs of such enforcement at its own expense
subject to Section 3.03(c), provided that the Master Servicer shall not be
required to prosecute or defend any legal action except to the extent that the
Master Servicer shall have received reasonable indemnity for its costs and
expenses in pursuing such action.

     (c) To the extent that the costs and expenses of the Master Servicer
related to any termination of a Servicer, appointment of a successor Servicer or
the transfer and assumption of servicing by the Master Servicer (including,
without limitation, (i) all legal costs and expenses and all due diligence costs
and expenses associated with an evaluation of the potential termination of a
Servicer as a result of an event of default by such Servicer and (ii) all costs
and expenses associated with the complete transfer of servicing, including all
servicing files and all servicing data and the completion, correction or
manipulation of such servicing data as may be required by the successor servicer
to correct any errors or insufficiencies in the servicing data or otherwise to
enable the successor service to service the Mortgage Loans in accordance with
this Agreement) are not fully and timely reimbursed by the terminated Servicer,
the Master Servicer shall be entitled to reimbursement of such costs and
expenses from the Master Servicer Collection Account pursuant to Section
4.03(b).

     (d) The Master Servicer shall require each Servicer to comply with the
remittance requirements and other obligations set forth in the Applicable
Servicing Agreement.

     (e) If the Master Servicer acts as Servicer, it will not assume liability
for the representations and warranties of such Servicer, if any, that it
replaces.

     Section 3.04 Fidelity Bond. The Master Servicer, at its expense, shall
maintain in effect a blanket fidelity bond and an errors and omissions insurance
policy, affording coverage with respect to all directors, officers, employees
and other Persons acting on such Master Servicer's behalf, and covering errors
and omissions in the performance of the Master Servicer's obligations hereunder.
The errors and omissions insurance policy and the fidelity bond shall be in such
form and amount generally acceptable for entities serving as master servicers or
trustees.

     Section 3.05 Power to Act; Procedures. The Master Servicer shall master
service the Mortgage Loans and shall have full power and authority, subject to
the REMIC Provisions and the provisions of Article X hereof, to do any and all
things that it may deem necessary or desirable in connection with the master
servicing and administration of the Mortgage Loans, including but not limited to
the power and authority (i) to execute and deliver, on behalf of the
Certificateholders and the Trustee, customary consents or waivers and other
instruments and documents, (ii) to consent to transfers of any Mortgaged
Property and assumptions of the

                                      -72-

<PAGE>

Mortgage Notes and related Mortgages, (iii) to collect any Insurance Proceeds
and Liquidation Proceeds, and (iv) to effectuate foreclosure or other conversion
of the ownership of the Mortgaged Property securing any Mortgage Loan, in each
case, in accordance with the provisions of this Agreement; provided, however,
that the Master Servicer shall not (and, consistent with its responsibilities
under Section 3.03, shall not permit any Servicer to) knowingly or intentionally
take any action, or fail to take (or fail to cause to be taken) any action
reasonably within its control and the scope of duties more specifically set
forth herein, that, under the REMIC Provisions, if taken or not taken, as the
case may be, would cause any REMIC created hereunder to fail to qualify as a
REMIC or result in the imposition of a tax upon the Issuing Entity (including
but not limited to the tax on prohibited transactions as defined in Section
860F(a)(2) of the Code and the tax on contributions to a REMIC set forth in
Section 860G(d) of the Code) unless the Master Servicer has received an Opinion
of Counsel (but not at the expense of the Master Servicer) to the effect that
the contemplated action will not would cause any REMIC created hereunder to fail
to qualify as a REMIC or result in the imposition of a tax upon any REMIC
created hereunder. The Trustee shall furnish the Master Servicer, upon written
request from a Servicing Officer, with any limited powers of attorney (in form
acceptable to the Trustee) empowering the Master Servicer or any Servicer to
execute and deliver instruments of satisfaction or cancellation, or of partial
or full release or discharge, and to foreclose upon or otherwise liquidate
Mortgaged Property, and to appeal, prosecute or defend in any court action
relating to the Mortgage Loans or the Mortgaged Property, in accordance with
this Agreement, and the Trustee shall execute and deliver such other documents,
as the Master Servicer may request, to enable the Master Servicer to master
service and administer the Mortgage Loans and carry out its duties hereunder, in
each case in accordance with Accepted Master Servicing Practices (and the
Trustee shall have no liability for misuse of any such powers of attorney by the
Master Servicer or any Servicer). If the Master Servicer or the Trustee has been
advised that it is likely that the laws of the state in which action is to be
taken prohibit such action if taken in the name of the Trustee or that the
Trustee would be adversely affected under the "doing business" or tax laws of
such state if such action is taken in its name, the Master Servicer shall join
with the Trustee in the appointment of a co-trustee pursuant to Section 9.11
hereof. In the performance of its duties hereunder, the Master Servicer shall be
an independent contractor and shall not, except in those instances where it is
taking action in the name of the Trustee, be deemed to be the agent of the
Trustee.

     Section 3.06 Due-on-Sale Clauses; Assumption Agreements. To the extent
provided in this Agreement, to the extent Mortgage Loans contain enforceable
due-on-sale clauses, the Master Servicer shall cause the Servicers to enforce
such clauses in accordance with the Applicable Servicing Agreement. If
applicable law prohibits the enforcement of a due-on-sale clause or such clause
is otherwise not enforced in accordance with the Applicable Servicing Agreement,
and, as a consequence, a Mortgage Loan is assumed, the original Mortgagor may be
released from liability in accordance with the Applicable Servicing Agreement.

     Section 3.07 [Reserved].

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     Section 3.08 Documents, Records and Funds in Possession of Master Servicer
To Be Held for Trustee.

     (a) The Master Servicer shall transmit to the Trustee or Custodian such
documents and instruments coming into the possession of the Master Servicer from
time to time as are required by the terms hereof, to be delivered to the Trustee
or Custodian. Any funds received by the Master Servicer in respect of any
Mortgage Loan or which otherwise are collected by the Master Servicer as
Liquidation Proceeds or Insurance Proceeds in respect of any Mortgage Loan shall
be held for the benefit of the Trustee and the Certificateholders subject to the
Master Servicer's right to retain or withdraw from the Master Servicer
Collection Account the Master Servicing Compensation and other amounts provided
in this Agreement. The Master Servicer shall, and (to the extent provided in
this Agreement) shall cause each Servicer to, provide access to information and
documentation regarding the Mortgage Loans to the Trustee, its agents and
accountants at any time upon reasonable request and during normal business
hours, and to Certificateholders that are savings and loan associations, banks
or insurance companies, the Office of Thrift Supervision, the FDIC and the
supervisory agents and examiners of such Office and Corporation or examiners of
any other federal or state banking or insurance regulatory authority if so
required by applicable regulations of the Office of Thrift Supervision or other
regulatory authority, such access to be afforded without charge but only upon
reasonable request in writing and during normal business hours at the offices of
the Master Servicer designated by it. In fulfilling such a request, the Master
Servicer shall not be responsible for determining the sufficiency of such
information.

     (b) All Mortgage Files and funds collected or held by, or under the control
of, the Master Servicer, in respect of any Mortgage Loans, whether from the
collection of principal and interest payments or from Liquidation Proceeds or
Insurance Proceeds, shall be held by the Master Servicer for and on behalf of
the Trustee and the Certificateholders and shall be and remain the sole and
exclusive property of the Trustee; provided, however, that the Master Servicer
shall be entitled to setoff against, and deduct from, any such funds any amounts
that are properly due and payable to the Master Servicer under this Agreement.

     Section 3.09 Standard Hazard Insurance and Flood Insurance Policies.

     (a) For each Mortgage Loan, the Master Servicer shall enforce any
obligation of the Servicers under the Applicable Servicing Agreement to maintain
or cause to be maintained standard fire and casualty insurance and, where
applicable, flood insurance, all in accordance with the provisions of this
Agreement and the Applicable Servicing Agreements. It is understood and agreed
that such insurance shall be with insurers meeting the eligibility requirements
set forth in the Applicable Servicing Agreements and that no earthquake or other
additional insurance is to be required of any Mortgagor or to be maintained on
property acquired in respect of a defaulted loan, other than pursuant to such
applicable laws and regulations as shall at any time be in force and as shall
require such additional insurance.

     (b) Pursuant to Sections 4.01 and 4.02, any amounts collected by the Master
Servicer, under any insurance policies (other than amounts to be applied to the
restoration or repair of the property subject to the related Mortgage or
released to the Mortgagor in accordance with this Agreement) shall be deposited
into the Master Servicer Collection Account, subject to

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<PAGE>

withdrawal pursuant to Sections 4.02 and 4.03. Any cost incurred by the Master
Servicer or any Servicers in maintaining any such insurance if the Mortgagor
defaults in its obligation to do so shall be added to the amount owing under the
Mortgage Loan where the terms of the Mortgage Loan so permit; provided, however,
that the addition of any such cost shall not be taken into account for purposes
of calculating the distributions to be made to Certificateholders and shall be
recoverable by the Master Servicer or such Servicer pursuant to Sections 4.02
and 4.03.

     Section 3.10 Presentment of Claims and Collection of Proceeds. The Master
Servicer shall (to the extent provided in this Agreement) cause the Servicers
to, prepare and present on behalf of the Trustee and the Certificateholders all
claims under the Insurance Policies and take such actions (including the
negotiation, settlement, compromise or enforcement of the insured's claim) as
shall be necessary to realize recovery under such policies. Any proceeds
disbursed to the Master Servicer (or disbursed to a Servicer and remitted to the
Master Servicer) in respect of such policies, bonds or contracts shall be
promptly deposited in the Master Servicer Collection Account upon receipt,
except that any amounts realized that are to be applied to the repair or
restoration of the related Mortgaged Property as a condition precedent to the
presentation of claims on the related Mortgage Loan to the insurer under any
applicable Insurance Policy need not be so deposited (or remitted).

     Section 3.11 Maintenance of the Primary Mortgage Insurance Policies.

     (a) The Master Servicer shall not take, or permit any Servicer (to the
extent such action is prohibited under this Agreement or the Applicable
Servicing Agreement, as applicable) to take, any action that would result in
noncoverage under any applicable Primary Mortgage Insurance Policy of any loss
which, but for the actions of such Master Servicer or Servicer, would have been
covered thereunder. The Master Servicer shall use its best reasonable efforts to
cause each Servicer (to the extent required under the Applicable Servicing
Agreement) to keep in force and effect (to the extent that the Mortgage Loan
requires the Mortgagor to maintain such insurance), primary mortgage insurance
applicable to each Mortgage Loan in accordance with the provisions of the
Applicable Servicing Agreement. The Master Servicer shall not, and shall not
permit any Servicer (to the extent required under this Agreement or the
Applicable Servicing Agreement, as applicable) to, cancel or refuse to renew any
such Primary Mortgage Insurance Policy that is in effect at the date of the
initial issuance of the Mortgage Note and is required to be kept in force
hereunder except in accordance with the provisions of this Agreement or the
Applicable Servicing Agreement, as applicable.

     (b) The Master Servicer agrees to present, or to cause each Servicer (to
the extent required under this Agreement or the Applicable Servicing Agreement,
as applicable) to present, on behalf of the Trustee and the Certificateholders,
claims to the insurer under any Primary Mortgage Insurance Policies and, in this
regard, to take such reasonable action as shall be necessary to permit recovery
under any Primary Mortgage Insurance Policies respecting defaulted Mortgage
Loans. Pursuant to Section 4.01 and 4.02, any amounts collected by the Master
Servicer under any Primary Mortgage Insurance Policies shall be deposited in the
Master Servicer Collection Account, subject to withdrawal pursuant to Section
4.03.

     Section 3.12 Trustee to Retain Possession of Certain Insurance Policies and
Documents. The Trustee or the Custodian shall retain possession and custody of
the originals (to

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<PAGE>

the extent available) of any Primary Mortgage Insurance Policies, or certificate
of insurance if applicable, and any certificates of renewal as to the foregoing
as may be issued from time to time as contemplated by this Agreement. Until all
amounts distributable in respect of the Certificates have been distributed in
full and the Master Servicer otherwise has fulfilled its obligations under this
Agreement, the Trustee or its Custodian shall also retain possession and custody
of each Mortgage File in accordance with and subject to the terms and conditions
of this Agreement and the Custodial Agreement. The Master Servicer shall
promptly deliver or cause to be delivered to the Trustee or the Custodian upon
the execution or receipt thereof the originals of any Primary Mortgage Insurance
Policies, any certificates of renewal, and such other documents or instruments
that constitute portions of the Mortgage File that come into the possession of
the Master Servicer from time to time.

     Section 3.13 Realization Upon Defaulted Mortgage Loans. The Master Servicer
shall cause each Servicer (to the extent required under the Applicable Servicing
Agreement) to foreclose upon, repossess or otherwise comparably convert the
ownership of Mortgaged Properties 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, all in accordance with the terms and
conditions of the Applicable Servicing Agreement.

     Section 3.14 Compensation for the Master Servicer. The Master Servicer will
be entitled to all income and gain realized from any investment of funds in the
Master Servicer Collection Account, pursuant to Article IV, for the performance
of its activities hereunder. Servicing compensation in the form of assumption
fees, if any, late payment charges, as collected, if any, or otherwise (but not
including any Prepayment Charge) shall be retained by the applicable Servicer
and need not be deposited in the Master Servicer Collection Account. The Master
Servicer shall be required to pay all expenses incurred by it in connection with
its activities hereunder and shall not be entitled to reimbursement therefor
except as provided in this Agreement.

     Section 3.15 REO Property.

     (a) In the event the Issuing Entity acquires ownership of any REO Property
in respect of any related Mortgage Loan, the deed or certificate of sale shall
be issued to the Trustee, or to its nominee, on behalf of the related
Certificateholders, which nominee shall not be a Servicer. The Master Servicer
shall, to the extent provided in this Agreement and the Applicable Servicing
Agreement, cause the applicable Servicer to comply with its obligations
hereunder and thereunder, as applicable, regarding any REO Property. Pursuant to
its efforts to sell such REO Property, the Master Servicer shall cause the
applicable Servicer to comply in the manner and to the extent required by this
Agreement and the Applicable Servicing Agreement, as applicable, in accordance
with the REMIC Provisions and in a manner that does not result in a tax on "net
income from foreclosure property" or cause such REO Property to fail to qualify
as "foreclosure property" within the meaning of Section 860G(a)(8) of the Code.

     (b) The Master Servicer shall, to the extent required by the Applicable
Servicing Agreement, cause the applicable Servicer to deposit all funds
collected and received in connection with the operation of any REO Property in a
Collection Account.

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     (c) The Master Servicer and the applicable Servicer, upon the final
disposition of any REO Property, shall be entitled to reimbursement for any
related unreimbursed Advances and other unreimbursed advances as well as any
unpaid Servicing Fees from Liquidation Proceeds received in connection with the
final disposition of such REO Property; provided, that any such unreimbursed
Advances as well as any unpaid Servicing Fees may be reimbursed or paid, as the
case may be, prior to final disposition, out of any net rental income or other
net amounts derived from such REO Property.

     (d) To the extent provided in this Agreement, the Liquidation Proceeds from
the final disposition of the REO Property, net of any payment to the Master
Servicer and the applicable Servicer as provided above shall be deposited in a
Collection Account on or prior to the Determination Date in the month following
receipt thereof and be remitted by wire transfer in immediately available funds
to the Master Servicer for deposit into the related Master Servicer Collection
Account on the next succeeding Servicer Remittance Date.

     Section 3.16 Annual Statement as to Compliance.

     The Master Servicer and the Securities Administrator shall deliver (or
otherwise make available) (and the Master Servicer and Securities Administrator
shall cause any Servicing Function Participant engaged by it to deliver) to the
Depositor, any NIMs Insurer and the Securities Administrator on or before March
1 (with a ten-calendar day cure period) of each year, commencing in March 2008,
an Officer's Certificate stating, as to the signer thereof, that (A) a review of
such party's activities during the preceding calendar year or portion thereof
and of such party's performance under this Agreement, or such other applicable
agreement in the case of a Servicing Function Participant, has been made under
such officer's supervision and (B) to the best of such officer's knowledge,
based on such review, such party has fulfilled all its obligations under this
Agreement, or such other applicable agreement in the case of a Servicing
Function Participant, in all material respects throughout such year or portion
thereof, or, if there has been a failure to fulfill any such obligation in any
material respect, specifying each such failure known to such officer and the
nature and status thereof.

     The Master Servicer shall include all annual statements of compliance
received by it from each Servicer with its own annual statement of compliance to
be submitted to the Securities Administrator pursuant to this Section.

     In the event the Master Servicer, the Securities Administrator or any
Servicing Function Participant engaged by any such party is terminated, assigns
its rights and obligations under or resigns pursuant to the terms of this
Agreement, or such other applicable agreement in the case of a Servicing
Function Participant, as the case may be, such party shall provide, an annual
statement of compliance pursuant to this Section 3.16 or to such applicable
agreement, as the case may be, notwithstanding any such termination, assignment
or resignation

     Section 3.17 Reports on Assessment of Compliance and Attestation.

     (a) By March 1 (with a ten-calendar day cure period) of each year,
commencing in March 2008, the Master Servicer, the Securities Administrator and
the Custodian each at its own expense, shall furnish or otherwise make
available, and each such party shall cause any Servicing

                                      -77-

<PAGE>

Function Participant engaged by it to furnish, each at its own expense, to the
Securities Administrator, the NIMs Insurer and the Depositor, an Assessment of
Compliance with the Relevant Servicing Criteria that contains (A) a statement by
such party of its responsibility for assessing compliance with the Relevant
Servicing Criteria, (B) a statement that such party used the Relevant Servicing
Criteria to assess compliance with the Relevant Servicing Criteria, (C) such
party's Assessment of Compliance with the Relevant Servicing Criteria as of and
for the fiscal year covered by the Form 10-K required to be filed pursuant to
Sections 3.18(h), (i), (j) and (k), including, if there has been any material
instance of noncompliance with the Relevant Servicing Criteria, a discussion of
each such failure and the nature and status thereof, and (D) a statement that a
registered public accounting firm has issued an attestation report on such
party's Assessment of Compliance with the Relevant Servicing Criteria as of and
for such period.

     No later than the end of each fiscal year for the Issuing Entity for which
a 10-K is required to be filed, the Master Servicer and the Custodian shall each
forward to the Securities Administrator and the Depositor the name of each
Servicing Function Participant engaged by it and what Relevant Servicing
Criteria will be addressed in the Assessment of Compliance prepared by such
Servicing Function Participant (provided, however, that the Master Servicer need
not provide such information to the Securities Administrator so long as the
Master Servicer and the Securities Administrator are the same Person). When the
Master Servicer, and the Securities Administrator (or any Servicing Function
Participant engaged by them) submit their assessments to the Securities
Administrator, such parties will also at such time include the assessment and
attestation pursuant to this Section 3.17 of each Servicing Function Participant
engaged by it.

     Promptly after receipt of each Assessment of Compliance, (i) the Depositor
shall review each such Assessment of Compliance and, if applicable, consult with
such Servicer, the Master Servicer, the Securities Administrator and any
Servicing Function Participant engaged by any such party as to the nature of any
material instance of noncompliance with the Relevant Servicing Criteria by such
Servicer by each such party, and (ii) the Securities Administrator shall confirm
that the assessments individually address the Relevant Servicing Criteria for
each party as set forth on Exhibit K in respect of each Servicer and notify the
Depositor of any exceptions.

     The Master Servicer shall include all annual Assessments of Compliance
received by it from the Servicers with its own Assessment of Compliance to be
submitted to the Securities Administrator pursuant to this Section.

     In the event the Master Servicer, the Securities Administrator or any
Servicing Function Participant engaged by any such party is terminated, assigns
its rights and obligations under or resigns pursuant to the terms of this
Agreement, or any other applicable agreement, as the case may be, such party
shall provide, an Assessment of Compliance pursuant to this Section 3.17,
coupled with an attestation as required in this Section 3.17, or such applicable
agreement notwithstanding any such termination, assignment or resignation.

     (b) By March 1 (with a ten-calendar day cure period) of each year,
commencing in March 2008, the Master Servicer, the Securities Administrator and
the Custodian, each at its own expense, shall cause, and each such party shall
cause any Servicing Function Participant engaged

                                      -78-

<PAGE>

by it to cause, each at its own expense, a registered public accounting firm
(which may also render other services to the Master Servicer, the Trustee, the
Securities Administrator, or such other Servicing Function Participants, as the
case may be) and that is a member of the American Institute of Certified Public
Accountants to furnish an attestation report to the Securities Administrator and
the Depositor, to the effect that (i) it has obtained a representation regarding
certain matters from the management of such party, which includes an assertion
that such party has complied with the Relevant Servicing Criteria, and (ii) on
the basis of an examination conducted by such firm in accordance with standards
for attestation engagements issued or adopted by the Public Company Accounting
Oversight Board, it is expressing an opinion as to whether such party's
compliance with the Relevant Servicing Criteria was fairly stated in all
material respects, or it cannot express an overall opinion regarding such
party's Assessment of Compliance with the Relevant Servicing Criteria. 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.

     (c) Promptly after receipt of each Assessment of Compliance and attestation
report, the Securities Administrator shall confirm that each assessment
submitted pursuant to Section 3.17(a) is coupled with an attestation meeting the
requirements of Section 3.17(b) and notify the Depositor of any exceptions.

     The Master Servicer shall include each such attestation furnished to it by
the Servicers with its own attestation to be submitted to the Securities
Administrator pursuant to this Section.

     In the event the Master Servicer, the Securities Administrator, the
Custodian or any Servicing Function Participant engaged by any such party, is
terminated, assigns its rights and duties under, or resigns pursuant to the
terms of, this Agreement, or any applicable Custodial Agreement, as the case may
be, such party shall cause a registered public accounting firm to provide an
attestation pursuant to this Section 3.17, or such other applicable agreement,
notwithstanding any such termination, assignment or resignation.

     Section 3.18 Periodic Filings.

     (a) Within four (4) Business Days after the occurrence of an event
requiring disclosure on Form 8-K (each such event, a "Reportable Event"), and if
requested by the Depositor, the Securities Administrator shall prepare and file
on behalf of the Issuing Entity a Form 8-K, as required by the Exchange Act,
provided that the Depositor shall file the initial Form 8-K in connection with
the issuance of the Certificates. Any disclosure or information related to a
Reportable Event or that is otherwise required to be included on Form 8-K (other
than the initial Form 8-K) ("Form 8-K Disclosure Information") shall be reported
by the parties set forth on Exhibit Q-3 to the Depositor and the Securities
Administrator and directed and approved by the Depositor, and the Securities
Administrator will have no duty or liability for any failure hereunder to
determine or prepare any Form 8-K Disclosure Information or any Form 8-K except
as set forth in the next paragraph.

     (b) For so long as the Issuing Entity is subject to the reporting
requirements of the Exchange Act, following the occurrence of a Reportable Event
that is known by a Responsible

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Officer (A) each party listed on Exhibit Q-3 hereto shall use commercially
reasonable best efforts to provide prompt notice to the Master Servicer, the
Securities Administrator and the Depositor, by fax and by phone or by e-mail and
by phone, (B) each such party shall be required to provide to the Securities
Administrator and the Depositor, to the extent known, in EDGAR-compatible format
or in such other format as agreed upon by the Securities Administrator and such
party, the form and substance of any Form 8-K Disclosure Information if
applicable, together with the form set forth on Exhibit O (the "Additional
Disclosure Notification") by the close of business New York City time on the 2nd
Business Day following the occurrence of such Reportable Event and (C) the
Depositor, shall approve, as to form and substance, or disapprove, as the case
may be, the inclusion of the Form 8-K Disclosure Information on Form 8-K. The
Securities Administrator has no duty under this Agreement to monitor or enforce
the performance by the parties listed on Exhibit Q-3 of their duties under this
paragraph or proactively solicit or procure from such parties any Form 8-K
Disclosure Information. The Depositor will be responsible for any reasonable
fees and expenses assessed or incurred by the Securities Administrator in
connection with including any Form 8-K Disclosure Information on Form 8-K
pursuant to this paragraph.

     (c) After preparing the Form 8-K, the Securities Administrator shall, upon
request, forward electronically a copy of the Form 8-K to the Depositor.
Promptly, but no later than the close of business on the third Business Day
after the Reportable Event, the Depositor shall notify the Securities
Administrator in writing (which may be furnished electronically) of any changes
to or approval of such Form 8-K. In the absence of receipt of any written
changes or approval, or if the Depositor does not request a copy of a Form 8-K,
the Securities Administrator shall be entitled to assume that such Form 8-K is
in final form and the Securities Administrator may proceed with the process for
execution and filing of the Form 8-K. A duly authorized representative of the
Master Servicer shall sign each Form 8-K. If a Form 8-K cannot be filed on time
or if a previously filed Form 8-K needs to be amended, the Securities
Administrator will follow the procedures set forth in Section 3.18(n).

     (d) Promptly (but no later than one Business Day) after filing with the
Commission, the Securities Administrator will make available on its internet
website a final executed copy of each Form 8-K prepared and filed by the
Securities Administrator. The parties to this Agreement acknowledge that the
performance by the Master Servicer and the Securities Administrator of its
duties under this Section 3.18 related to the timely preparation, execution and
filing of Form 8-K is contingent upon the other parties hereto strictly
observing all applicable deadlines in the performance of their duties under this
Section 3.18. The Depositor acknowledges that the performance by the Master
Servicer and the Securities Administrator of its duties under this Section 3.18
related to the timely preparation, execution and filing of Form 8-K is also
contingent upon the Servicers, the Custodian and any Servicing Function
Participant strictly observing deadlines no later than those set forth in this
paragraph that are applicable to the parties to this Agreement in the delivery
to the Securities Administrator of any necessary Form 8-K Disclosure Information
pursuant to this Agreement, the Custodial Agreement or any other applicable
agreement. Neither the Master Servicer nor the Securities Administrator shall
have any liability for any loss, expense, damage or claim arising out of or with
respect to any failure to properly prepare, execute and/or timely file such Form
8-K, where such failure results from the Securities Administrator's inability or
failure to obtain or receive, on a timely basis, any

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<PAGE>

information from any other party hereto or any Servicer, Custodian or Servicing
Function Participant needed to prepare, arrange for execution or file such Form
8-K.

     (e) Within fifteen (15) days after each Distribution Date (subject to
permitted extensions under the Exchange Act), the Securities Administrator
shall, on behalf of the Issuing Entity and in accordance with industry
standards, prepare and file with the Commission via the Electronic Data
Gathering and Retrieval System (EDGAR), a Form 10-D with a copy of the Monthly
Statement for such Distribution Date as an exhibit thereto. Any disclosure in
addition to the Monthly Statement that is required to be included on Form 10-D
("Additional Form 10-D Disclosure") shall be reported by the parties set forth
on Exhibit Q-1 to the Depositor and the Securities Administrator and directed
and approved by the Depositor pursuant to the following paragraph, and the
Securities Administrator will have no duty or liability for any failure
hereunder to determine or prepare any Additional Form 10-D Disclosure except as
set forth in the next paragraph.

     (f) As set forth in Exhibit Q-1 hereto, for so long as the Issuing Entity
is subject to the reporting requirements of the Exchange Act, within five (5)
calendar days after the related Distribution Date (i) each party listed on
Exhibit Q-1 hereto shall be required to provide to the Depositor and the
Securities Administrator, to the extent known by a Responsible Officer, in
EDGAR-compatible format or in such other format as agreed upon by the Securities
Administrator and such party, the form and substance of any Additional Form 10-D
Disclosure if applicable together with an Additional Disclosure Notification,
and (ii) the Depositor will approve, as to form and substance, or disapprove, as
the case may be, the inclusion of the Additional Form 10-D Disclosure on Form
10-D. The Securities Administrator has no duty under this Agreement to monitor
or enforce the performance by the parties listed on Exhibit Q-1 of their duties
under this paragraph or proactively solicit or procure from such parties any
Additional Form 10-D Disclosure Information. The Depositor will be responsible
for any reasonable fees and expenses incurred by the Securities Administrator in
connection with including any Additional Form 10-D Disclosure on Form 10-D
pursuant to this paragraph.

     (g) After preparing the Form 10-D, the Securities Administrator shall, upon
request, forward electronically a copy of the Form 10-D to the Depositor
(provided that such Form 10-D includes any Additional Form 10-D Disclosure).
Within two Business Days after receipt of such copy, but no later than the 12th
calendar day after the Distribution Date, the Depositor shall notify the
Securities Administrator in writing (which may be furnished electronically) of
any changes to or approval of such Form 10-D. In the absence of receipt of any
written changes or approval, or if the Depositor does not request a copy of a
Form 10-D, the Securities Administrator shall be entitled to assume that such
Form 10-D is in final form and the Securities Administrator may proceed with the
process for execution and filing of the Form 10-D. A duly authorized
representative of the Master Servicer shall sign each Form 10-D. If a Form 10-D
cannot be filed on time or if a previously filed Form 10-D needs to be amended,
the Securities Administrator will follow the procedures set forth in Section
3.18(n). Promptly (but not later than one Business Day) after filing with the
Commission, the Securities Administrator will make available on its internet
website a final executed copy of each Form 10-D prepared and filed by the
Securities Administrator. Form 10-D requires the registrant to indicate (by
checking "yes" or "no") that it "(1) has filed all reports required to be filed
by Section 13 or 15(d) of the Exchange Act during the preceding 12 months (or
for such shorter period that the registrant was required to

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<PAGE>

file such reports), and (2) has been subject to such filing requirements for the
past 90 days." The Depositor hereby represents to the Securities Administrator
that the Depositor has filed all such required reports during the preceding 12
months and that it has been subject to such filing requirement for the past 90
days. The Depositor shall notify the Securities Administrator in writing, no
later than the fifth calendar day after the related Distribution Date with
respect to the filing of a report on Form 10-D, if the answer to the questions
should be "no." The Securities Administrator shall be entitled to rely on such
representations in preparing, executing and/or filing any such Form 10-D. The
parties to this Agreement acknowledge that the performance by the Master
Servicer and the Securities Administrator of its respective duties under this
Section 3.18 related to the timely preparation, execution and filing of Form
10-D is contingent upon the other parties hereto strictly observing all
applicable deadlines in the performance of their duties under this Section 3.18.
The Depositor acknowledges that the performance by the Master Servicer and the
Securities Administrator of its duties under this Section 3.18 related to the
timely preparation, execution and filing of Form 10-D is also contingent upon
the Servicers, the Custodian and any Servicing Function Participant strictly
observing deadlines no later than those set forth in this paragraph that are
applicable to the parties to this Agreement in the delivery to the Securities
Administrator of any necessary Additional Form 10-D Disclosure pursuant to this
Agreement, the Custodial Agreement or any other applicable agreement. Neither
the Master Servicer nor the Securities Administrator will have any liability for
any loss, expense, damage or claim arising out of or with respect to any failure
to properly prepare, execute and/or timely file such Form 10-D resulting from
the Securities Administrator's inability or failure to obtain or receive any
information needed to prepare, arrange for execution or file such Form 10-D on a
timely basis.

     (h) On or prior to the 90th calendar day after the end of the fiscal year
for the Issuing Entity or such earlier date as may be required by the Exchange
Act (it being understood that the fiscal year for the Issuing Entity ends on
December 31st of each year) commencing in March 2008, the Securities
Administrator shall, on behalf of the Issuing Entity and in accordance with
industry standards, prepare and file with the Commission via EDGAR a Form 10-K
with respect to the Issuing Entity. Such Form 10-K shall include the following
items, in each case, as applicable, to the extent they have been delivered to
the Securities Administrator within the applicable time frames set forth in this
Agreement and Custodial Agreement: (i) an annual compliance statement for the
Master Servicer, each Servicer, the Securities Administrator and any Servicing
Function Participant engaged by any such party (together with the Custodian,
each a "Reporting Servicer"), as described in Section 3.16 of this Agreement and
the Custodial Agreement; provided, however, that the Securities Administrator,
at its discretion, may omit from the Form 10-K any annual compliance statement
that is not required to be filed with such Form 10-K pursuant to Regulation AB;
(ii)(A) the annual Assessment of Compliance with Servicing Criteria for each
Reporting Servicer (unless the Depositor has determined that such compliance
statement is not required by Regulation AB), as described in Section 3.17 of
this Agreement and the Custodial Agreement, and (B) if any Reporting Servicer's
Assessment of Compliance with Servicing Criteria described in Section 3.17 of
this Agreement identifies any material instance of noncompliance, disclosure
identifying such instance of noncompliance, or if any Reporting Servicer's
Assessment of Compliance with Servicing Criteria described in Section 3.17 of
this Agreement is not included as an exhibit to such Form 10-K, disclosure that
such report is not included and an explanation why such report is not included;
provided, however, that the Securities Administrator, at its discretion, may
omit

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from the Form 10-K any Assessment of Compliance or attestation report described
in clause (iii) below that is not required to be filed with such Form 10-K
pursuant to Regulation AB; (iii)(A) the registered public accounting firm
attestation report for each Reporting Servicer, as described in Section 3.17 of
this Agreement and the Custodial Agreement, and (B) if any registered public
accounting firm attestation report described under Section 3.17 of this
Agreement identifies any material instance of noncompliance, disclosure
identifying such instance of noncompliance, or if any such registered public
accounting firm attestation report is not included as an exhibit to such Form
10-K, disclosure that such report is not included and an explanation why such
report is not included, and (iv) a Sarbanes-Oxley Certification in the form
attached hereto as Exhibit L, executed by the senior officer in charge of
securitizations of the Master Servicer. Any disclosure or information in
addition to (i) through (iv) above that is required to be included on Form 10-K
("Additional Form 10-K Disclosure") shall be reported by the parties as set
forth in Exhibit Q-2 to the Depositor and the Securities Administrator and
directed and approved by the Depositor pursuant to the following paragraph and
the Securities Administrator will have no duty or liability for any failure
hereunder to determine or prepare any Additional Form 10-K Disclosure except or
set forth in the next paragraph.

     (i) As set forth in Exhibit Q-2 hereto, no later than March 1 (with a ten
calendar day cure period) of each year that the Issuing Entity is subject to the
Exchange Act reporting requirements, commencing in March 2008, (i) the parties
listed on Exhibit Q-2 hereto shall be required to provide to the Depositor and
the Securities Administrator, to the extent known by a Responsible Officer, in
EDGAR-compatible format or in such other format as agreed upon by the Securities
Administrator and such party, the form and substance of any Additional Form 10-K
Disclosure, if applicable together with an Additional Disclosure Notification,
and (ii) the Depositor will approve, as to form and substance, or disapprove, as
the case may be, the inclusion of the Additional Form 10-K Disclosure and shall
forward such Additional Form 10-K Disclosure. The Securities Administrator has
no duty under this Agreement to monitor or enforce the performance by the
parties listed on Exhibit Q-2 of their duties under this paragraph or
proactively solicit or procure from such parties any Additional Form 10-K
Disclosure Information. The Depositor will be responsible for any reasonable
fees and expenses incurred by the Securities Administrator in connection with
including any Additional Form 10-K Disclosure on Form 10-K pursuant to this
paragraph.

     (j) After preparing the Form 10-K, the Securities Administrator shall, upon
request, forward electronically a copy of the Form 10-K to the Depositor. Within
three Business Days after receipt of such copy, but no later than March 25th,
the Depositor shall notify the Securities Administrator in writing (which may be
furnished electronically) of any changes to or approval of such Form 10-K. In
the absence of receipt of any written changes or approval, or if the Depositor
does not request a copy of a Form 10-K, the Securities Administrator shall be
entitled to assume that such Form 10-K is in final form and the Securities
Administrator may proceed with the process for execution and filing of the Form
10-K. A senior officer of the Master Servicer in charge of the master servicing
function shall sign the Form 10-K. If a Form 10-K cannot be filed on time or if
a previously filed Form 10-K needs to be amended, the Securities Administrator
will follow the procedures set forth in Section 3.18(n). Promptly (but no later
than one Business Day) after filing with the Commission, the Securities
Administrator will make available on its internet website a final executed copy
of each Form 10-K prepared and filed by the Securities Administrator. Form 10-K
requires the registrant to indicate (by checking "yes" or

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"no") that it "(1) has filed all reports required to be filed by Section 13 or
15(d) of the Exchange Act during the preceding 12 months (or for such shorter
period that the registrant was required to file such reports), and (2) has been
subject to such filing requirements for the past 90 days." The Depositor hereby
represents to the Securities Administrator that the Depositor has filed all such
required reports during the preceding 12 months and that it has been subject to
such filing requirement for the past 90 days. The Depositor shall notify the
Securities Administrator in writing, no later than the 15th calendar day of
March in any year in which the Trust is subject to the reporting requirements of
the Exchange Act, if the answer to the questions should be "no." The Securities
Administrator shall be entitled to rely on such representations in preparing,
executing and/or filing any such Form 10-K. The parties to this Agreement
acknowledge that the performance by the Master Servicer and the Securities
Administrator of its duties under this Section 3.18 related to the timely
preparation, execution and filing of Form 10-K is contingent upon such parties
(and any Servicing Function Participant) strictly observing all applicable
deadlines in the performance of their duties under this Section 3.18, Section
3.16 and Section 3.17. The Depositor acknowledges that the performance by the
Master Servicer and the Securities Administrator of its duties under this
Section 3.18 related to the timely preparation, execution and filing of Form
10-K is also contingent upon the Servicers, the Custodian and any Servicing
Function Participant strictly observing deadlines no later than those set forth
in this paragraph that are applicable to the parties to this Agreement in the
delivery to the Securities Administrator of any necessary Additional Form 10-K
Disclosure, any annual statement of compliance and any Assessment of Compliance
and attestation pursuant to this Agreement, the Custodial Agreement or any other
applicable agreement. Neither the Master Servicer nor the Securities
Administrator shall have any liability for any loss, expense, damage or claim
arising out of or with respect to any failure to properly prepare, execute
and/or timely file such Form 10-K resulting from the Securities Administrator's
inability or failure to obtain or receive any information from any other party
hereto or any Servicer, Custodian or Servicing Function Participant needed to
prepare, execute or file such Form 10-K.

     (k) Each Form 10-K shall include a Sarbanes-Oxley Certification, which
shall be in the form attached hereto as Exhibit L. Each of the Master Servicer
and the Securities Administrator shall cause any Servicing Function Participant
engaged by it to sign and provide, to the person who signs the Sarbanes-Oxley
Certification (the "Certifying Person") by March 1 (with a ten day cure period)
of each year in which the Issuing Entity is subject to the reporting
requirements of the Exchange Act and otherwise within a reasonable period of
time upon request, a certification (a "Back-Up Certification") (in the form
attached hereto as Exhibit M) upon 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, the
"Certification Parties") can reasonably rely. The senior officer of the Master
Servicer in charge of the master servicing function shall serve as the
Certifying Person on behalf of the Issuing Entity. Such officer of the
Certifying Person can be contacted by e-mail at
cts.sec.notifications@wellsfargo.com or by facsimile at 443-367-3307. In the
event any such party or Servicing Function Participant engaged by any such party
is terminated or resigns pursuant to the terms of this Agreement, or any other
applicable agreement, as the case may be, such party shall provide a Back-Up
Certification to the Master Servicer pursuant to this Section 3.18 with respect
to the period of time it was subject to this Agreement or any other applicable
agreement, as the case may be. Notwithstanding the foregoing, (i) the Master
Servicer and the Securities Administrator shall not be required to deliver a
Back-Up Certification to each other if

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<PAGE>

both are the same Person and the Master Servicer is the Certifying Person and
(ii) the Master Servicer shall not be obligated to sign the Sarbanes-Oxley
Certification in the event that it does not receive any Back-Up Certification
required to be furnished to it pursuant to the Applicable Servicing Agreement or
Custodial Agreement.

     (l) The Securities Administrator shall have no responsibility to file any
items with the Commission other than those specified in this Section and the
Master Servicer shall execute any and all Form 10-Ds, 8-Ks and 10-Ks required
hereunder.

     (m) On or prior to January 30 of the first year in which the Securities
Administrator is able to do so under applicable law, the Securities
Administrator shall prepare and file a Form 15 Suspension Notification relating
to the automatic suspension of reporting in respect of the Issuing Entity under
the Exchange Act.

     (n) In the event that the Securities Administrator is unable to timely file
with the Commission all or any required portion of any Form 8-K, 10-D or 10-K
required to be filed by this Agreement because required disclosure information
was either not delivered to it or delivered to it after the delivery deadlines
set forth in this Agreement or for any other reason, the Securities
Administrator will promptly notify electronically the Depositor of such
inability to make a timely filing with the Commission. In the case of Form 10-D
and 10-K, the parties to this Agreement will cooperate to prepare and file a
Form 12b-25 and a 10-D/A and 10K/A, as applicable, pursuant to Rule 12b-25 of
the Exchange Act. In the case of Form 8-K, the Securities Administrator will,
upon receipt of all required Form 8-K Disclosure Information and upon the
approval and direction of the Depositor, include such disclosure information on
the next succeeding Form 10-D to be filed for the Issuing Entity. In the event
that any previously filed Form 8-K, 10-D or 10-K needs to be amended, in
connection with any Additional Form 10-D Disclosure (other than, in the case of
Form 10-D, for the purpose of restating any Monthly Statement), Additional Form
10-K Disclosure or Form 8-K Disclosure Information, the Securities Administrator
will electronically notify the Depositor and such other parties to the
transaction as are affected by such amendment, and such parties will cooperate
to prepare any necessary 8-K/A, 10-D/A or 10-K/A. Any Form 15, Form 12b-25 or
any amendment to Form 8-K, 10-D or 10-K shall be signed by duly authorized
representative or a senior officer in charge of master servicing, as applicable,
of the Master Servicer. The parties to this Agreement acknowledge that the
performance by the Master Servicer of its duties under this Section 3.18 related
to the timely preparation, execution and filing of Form 15, a Form 12b-25 or any
amendment to Form 8-K, 10-D or 10-K is contingent upon each such party
performing its duties under this Section. Neither the Master Servicer nor the
Securities Administrator shall have any liability for any loss, expense, damage
or claim arising out of or with respect to any failure to properly prepare,
execute and/or timely file any such Form 15, Form 12b-25 or any amendments to
Forms 8-K, 10-D or 10-K, where such failure results from the Securities
Administrator's inability or failure to receive, on a timely basis, any
information from any other party hereto or any Servicer, any Custodian or any
Servicing Function Participant needed to prepare, arrange for execution or file
such Form 15, Form 12b-25 or any amendments to Forms 8-K, 10-D or 10-K.

     (o) The Depositor and the Securities Administrator agree to use their good
faith efforts to cooperate in complying with the requirements of this Section
3.18.

                                      -85-

<PAGE>

     (p) Each of the parties agrees to provide to the Securities Administrator
such additional information related to such party as the Securities
Administrator may reasonably request, including evidence of the authorization of
the person signing any certificate or statement, financial information and
reports, and such other information related to such party or its performance
hereunder.

     (q) Any notice or notification required to be delivered by the Securities
Administrator or Master Servicer to the Depositor pursuant to this Section 3.18,
may be delivered via facsimile to (212) 449-2700, via email to paul_park@ml.com
or telephonically by calling Paul Park at (212) 449-6380.

     Section 3.19 Compliance with Regulation AB. Each of the parties hereto
acknowledges and agrees that the purpose of Sections 3.16, 3.17 and 3.18 is to
facilitate compliance by the Depositor with the provisions of Regulation AB, as
such may be amended or clarified from time to time. Therefore, each of the
parties agrees that the parties' obligations hereunder will be supplemented and
modified as necessary to be consistent with any such amendments, interpretive
advice or guidance, convention or consensus among active participants in the
asset-backed securities markets, advice of counsel, or otherwise in respect of
the requirements of Regulation AB and the parties shall comply with requests
made by the Depositor (consistent with any such amendments, interpretive advice
or guidance, convention, consensus or advice of counsel) 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. Any such
supplementation or modification shall be made in accordance with Section 11.02
without the consent of the Certificateholders, and may result in a change in the
reports filed by the Securities Administrator on behalf of the Issuing Entity
under the Exchange Act.

     Section 3.20 [Reserved]

     Section 3.21 Rights of the NIMs Insurer.

     Each of the rights of the NIMs Insurer set forth in this Agreement shall
exist so long as the NIM Notes issued pursuant to the Indenture remain
outstanding or the NIMs Insurer is owed amounts in respect of its guarantee of
payment on such NIM Notes; provided, however, the NIMS Insurer shall not have
any rights hereunder (except pursuant to Section 10.14 in the case of clause
(ii) below) during the period of time, if any, that (i) the NIMS Insurer has not
undertaken to guarantee certain payments of notes issued pursuant to the
Indenture or (ii) any default has occurred and is continuing under the insurance
policy issued by the NIMS Insurer with respect to such notes.

                                   ARTICLE IV
                                    ACCOUNTS

     Section 4.01 Collection Accounts.

     (a) The Master Servicer shall enforce the obligation of each Servicer to
establish and maintain a Collection Account in accordance with the Applicable
Servicing Agreement, with records to be kept with respect thereto on a Mortgage
Loan by Mortgage Loan basis, into which accounts shall be deposited within two
Business Days (or as of such other time specified in this

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<PAGE>

Agreement) of receipt all collections of principal and interest on any Mortgage
Loan and with respect to any REO Property received by a Servicer, including
Principal Prepayments, Insurance Proceeds, Liquidation Proceeds, Subsequent
Recoveries and advances made from the Servicer's own funds (less servicing
compensation as permitted by this Agreement in the case of the Servicer) and all
other amounts to be deposited in the Collection Account. To the extent provided
in the Applicable Servicing Agreement, the Collection Account shall be held in a
Designated Depository Institution and segregated on the books of such
institution in the name of the Trustee for the benefit of Certificateholders.

     (b) To the extent provided in this Agreement, amounts on deposit in a
Collection Account may be invested in Permitted Investments in the name of the
Trustee for the benefit of Certificateholders and, except as provided in the
preceding paragraph, not commingled with any other funds, such Permitted
Investments to mature, or to be subject to redemption or withdrawal, no later
than the date on which such funds are required to be withdrawn for deposit in
the Master Servicer Collection Account, and shall be held until required for
such deposit.

     (c) [Reserved].

     (d) Withdrawals by the Master Servicer may be made from the Master Servicer
Collection Account only to make remittances as provided in Sections 4.02 and
4.03; to reimburse the Master Servicer or a Servicer for Advances which have
been recovered by subsequent collection from the related Mortgagor; to remove
amounts deposited in error; to remove fees, charges or other such amounts
deposited on a temporary basis; or to clear and terminate the account at the
termination of this Agreement in accordance with Section 10.01.

     Section 4.02 Master Servicer Collection Account.

     (a) The Master Servicer shall establish and maintain in the name of the
Trustee, for the benefit of the Certificateholders, the Master Servicer
Collection Account as a segregated trust account or accounts. The Master
Servicer Collection Account may be a sub-account of the Distribution Account.
The Master Servicer will deposit in the Master Servicer Collection Account as
identified by the Master Servicer and as received by the Master Servicer, the
following amounts:

          (i) Any amounts withdrawn from a Collection Account or other permitted
     account;

          (ii) Any Advance and any Compensating Interest Payments;

          (iii) Any Insurance Proceeds, Liquidation Proceeds or Subsequent
     Recoveries received by or on behalf of the Master Servicer or which were
     not deposited in a Collection Account or other permitted account;

          (iv) The repurchase price with respect to any Mortgage Loans
     repurchased and all proceeds of any Mortgage Loans or property acquired in
     connection with the optional termination of the trust;

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<PAGE>

          (v) Any amounts required to be deposited with respect to losses on
     investments of deposits in an Account; and

          (vi) Any other amounts received by or on behalf of the Master Servicer
     and required to be deposited in the Master Servicer Collection Account
     pursuant to this Agreement.

     (b) All amounts deposited to the Master Servicer Collection Account shall
be held by the Master Servicer in the name of the Trustee in trust for the
benefit of the Certificateholders in accordance with the terms and provisions of
this Agreement. The requirements for crediting the Master Servicer Collection
Account or the Distribution Account shall be exclusive, it being understood and
agreed that, without limiting the generality of the foregoing, payments in the
nature of (i) prepayment or late payment charges or assumption, tax service,
statement account or payoff, substitution, satisfaction, release and other like
fees and charges and (ii) the items enumerated in Sections 4.05(a)(i), (ii),
(iii), (iv), (vi), (vii), (viii), (ix), (xi) and (xii) with respect to the
Securities Administrator, need not be credited by the Master Servicer or the
applicable Servicer to the Distribution Account or the Master Servicer
Collection Account, as applicable. In the event that the Master Servicer shall
deposit or cause to be deposited to the Distribution Account any amount not
required to be credited thereto, the Securities Administrator, upon receipt of a
written request therefor signed by a Servicing Officer of the Master Servicer,
shall promptly transfer such amount to the Master Servicer from the Distribution
Account, any provision herein to the contrary notwithstanding.

     (c) The amount at any time credited to the Master Servicer Collection
Account shall be invested, in the name of the Trustee, or its nominee, for the
benefit of the Certificateholders, in Permitted Investments as directed by
Master Servicer. All Permitted Investments shall mature or be subject to
redemption or withdrawal on or before, and shall be held until, the next
succeeding Distribution Account Deposit Date. Any and all investment earnings on
amounts on deposit in the Master Servicer Collection Account from time to time
shall be for the account of the Master Servicer. The Master Servicer from time
to time shall be permitted to withdraw or receive distribution of any and all
investment earnings from the Master Servicer Collection Account. The risk of
loss of moneys required to be distributed to the Certificateholders resulting
from such investments shall be borne by and be the risk of the Master Servicer.
The Master Servicer shall deposit the amount of any such loss in the Master
Servicer Collection Account within two Business Days of receipt of notification
of such loss but not later than the second Business Day prior to the
Distribution Date on which the moneys so invested are required to be distributed
to the Certificateholders.

     Section 4.03 Permitted Withdrawals and Transfers from the Master Servicer
Collection Account.

     (a) The Master Servicer will, from time to time on demand of the Master
Servicer, the Trustee or the Securities Administrator, make or cause to be made
such withdrawals or transfers from the Master Servicer Collection Account as the
Master Servicer has designated for such transfer or withdrawal pursuant to this
Agreement. The Master Servicer may clear and terminate the Master Servicer
Collection Account pursuant to Section 10.01 and remove amounts from time to
time deposited in error.

                                      -88-

<PAGE>

     (b) On an ongoing basis, the Master Servicer shall withdraw from the Master
Servicer Collection Account (i) any expenses recoverable by the Trustee, the
Master Servicer or the Securities Administrator pursuant to this Agreement,
including but not limited to Sections 2.01(b), 3.03, 7.04 and 9.05 and (ii) any
amounts payable to the Master Servicer as set forth in Section 3.14.

     (c) In addition, on or before each Distribution Account Deposit Date, the
Master Servicer shall deposit in the Distribution Account (or remit to the
Securities Administrator for deposit therein) any Advances required to be made
by the Master Servicer with respect to the Mortgage Loans.

     (d) No later than 3:00 p.m. New York time on each Distribution Account
Deposit Date, the Master Servicer will transfer all Available Funds on deposit
in the Master Servicer Collection Account with respect to the related
Distribution Date to the Securities Administrator for deposit in the
Distribution Account.

     Section 4.04 Distribution Account.

     (a) The Securities Administrator shall establish and maintain in the name
of the Trustee, for the benefit of the Certificateholders, the Distribution
Account as a segregated trust account or accounts.

     (b) All amounts deposited to the Distribution Account shall be held by the
Securities Administrator in the name of the Trustee in trust for the benefit of
the Certificateholders in accordance with the terms and provisions of this
Agreement.

     (c) The Distribution Account shall constitute a trust account of the Trust
Fund segregated on the books of the Securities Administrator and held by the
Securities Administrator in trust in its Corporate Trust Office, and the
Distribution Account and the funds deposited therein shall not be subject to,
and shall be protected to the maximum extent permitted by applicable law from,
all claims, liens, and encumbrances of any creditors or depositors of the
Securities Administrator, the Trustee or the Master Servicer (whether made
directly, or indirectly through a liquidator or receiver of the Securities
Administrator, the Trustee or the Master Servicer). The Distribution Account
shall be an Eligible Account. The amount at any time credited to the
Distribution Account shall be (i) fully insured by the FDIC to the maximum
coverage provided thereby or (ii) invested in the name of the Trustee, in such
Permitted Investments selected by the Master Servicer or deposited in demand
deposits with such depository institutions as selected by the Master Servicer,
provided that time deposits of such depository institutions would be a Permitted
Investment. All Permitted Investments shall mature or be subject to redemption
or withdrawal on or before, and shall be held until, the next succeeding
Distribution Date if the obligor for such Permitted Investment is the Master
Servicer or, if such obligor is any other Person, the Business Day preceding
such Distribution Date. All investment earnings on amounts on deposit in the
Distribution Account or benefit from funds uninvested therein from time to time
shall be for the account of the Securities Administrator. The Securities
Administrator shall be permitted to withdraw or receive distribution of any and
all investment earnings from the Distribution Account on each Distribution Date.
If there is any loss on a Permitted Investment or demand deposit, the Securities
Administrator shall deposit

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<PAGE>

such amount in the Distribution Account. With respect to the Distribution
Account and the funds deposited therein, the Securities Administrator shall take
such action as may be necessary to ensure that the Certificateholders shall be
entitled to the priorities afforded to such a trust account (in addition to a
claim against the estate of the Trust) as provided by 12 U.S.C. Section 92a(e),
and applicable regulations pursuant thereto, if applicable, or any applicable
comparable state statute applicable to state chartered banking corporations.

     Section 4.05 Permitted Withdrawals and Transfers from the Distribution
Account.

     (a) The Securities Administrator will, from time to time on demand of the
Master Servicer, make or cause to be made such withdrawals or transfers from the
Distribution Account as the Master Servicer has designated for such transfer or
withdrawal pursuant to this Agreement for the following purposes (limited in the
case of amounts due the Master Servicer to those not withdrawn from the Master
Servicer Collection Account in accordance with the terms of this Agreement):

          (i) to reimburse the Master Servicer or any Servicer for any Advance
     of its own funds or any advance of such Servicer's own funds, the right of
     the Master Servicer or a Servicer to reimbursement pursuant to this
     subclause (i) being limited to amounts received on a particular Mortgage
     Loan (including, for this purpose, the Purchase Price therefor, Insurance
     Proceeds and Liquidation Proceeds) which represent late payments or
     recoveries of the principal of or interest on such Mortgage Loan respecting
     which such Advance or advance was made;

          (ii) to reimburse the Master Servicer or any Servicer from Insurance
     Proceeds or Liquidation Proceeds relating to a particular Mortgage Loan for
     amounts expended by the Master Servicer or such Servicer in good faith as a
     Servicing Advance in connection with the restoration of the related
     Mortgaged Property which was damaged by an Uninsured Cause or in connection
     with the liquidation of such Mortgage Loan;

          (iii) to reimburse the Master Servicer or any Servicer from Insurance
     Proceeds relating to a particular Mortgage Loan for insured expenses
     incurred with respect to such Mortgage Loan and to reimburse the Master
     Servicer or such Servicer from Liquidation Proceeds from a particular
     Mortgage Loan for Liquidation Expenses incurred with respect to such
     Mortgage Loan; provided that the Master Servicer shall not be entitled to
     reimbursement for Liquidation Expenses with respect to a Mortgage Loan to
     the extent that (i) any amounts with respect to such Mortgage Loan were
     paid as Excess Liquidation Proceeds pursuant to clause (xi) of this Section
     4.05(a) to the Master Servicer; and (ii) such Liquidation Expenses were not
     included in the computation of such Excess Liquidation Proceeds;

          (iv) to pay the Master Servicer or any Servicer, as appropriate, from
     Liquidation Proceeds or Insurance Proceeds received in connection with the
     liquidation of any Mortgage Loan, the amount which it or such Servicer
     would have been entitled to receive under subclause (ix) of this Section
     4.05(a) as servicing compensation on account of each defaulted scheduled
     payment on such Mortgage Loan if paid in a timely manner by the related
     Mortgagor;

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<PAGE>

          (v) to pay the Master Servicer or any Servicer from the Purchase Price
     for any Mortgage Loan, the amount which it or such Servicer would have been
     entitled to receive under subclause (ix) of this Section 4.05(a) as
     servicing compensation;

          (vi) to reimburse the Master Servicer or any Servicer for advances of
     funds pursuant to Sections, and the right to reimbursement pursuant to this
     subclause being limited to amounts received on the related Mortgage Loan
     (including, for this purpose, the Purchase Price therefor, Insurance
     Proceeds and Liquidation Proceeds) which represent late recoveries of the
     payments for which such advances were made;

          (vii) to reimburse the Master Servicer or any Servicer for any Advance
     or advance, after a Realized Loss has been allocated with respect to the
     related Mortgage Loan if the Advance or advance has not been reimbursed
     pursuant to clauses (i) and (vi);

          (viii) to pay the Master Servicer as set forth in Section 3.14;

          (ix) to reimburse the Master Servicer for expenses, costs and
     liabilities incurred by and reimbursable to it pursuant to this Agreement,
     including but not limited to Sections 3.03, 7.04(c) and (d);

          (x) to pay to the Master Servicer, as additional servicing
     compensation, any Excess Liquidation Proceeds to the extent not retained by
     the applicable Servicer;

          (xi) to reimburse or pay any Servicer any such amounts as are due
     thereto under the Applicable Servicing Agreement and have not been retained
     by or paid to the Servicer, to the extent provided in this Agreement or the
     Applicable Servicing Agreement, as applicable;

          (xii) to reimburse the Trustee or the Securities Administrator for
     expenses, costs and liabilities incurred by or reimbursable to it pursuant
     to this Agreement;

          (xiii) to remove amounts deposited in error; and

          (xiv) to clear and terminate the Distribution Account pursuant to
     Section 9.01.

     (b) The Master Servicer shall keep and maintain separate accounting, on a
Mortgage Loan by Mortgage Loan basis, for the purpose of accounting for any
reimbursement from the Distribution Account pursuant to subclauses (i) through
(vi), inclusive, and (viii) or with respect to any such amounts which would have
been covered by such subclauses had the amounts not been retained by the Master
Servicer without being deposited in the Distribution Account under Section
4.02(b).

     (c) On each Distribution Date, the Securities Administrator shall
distribute the Available Funds for the Mortgage Loans to the Holders of the
Certificates in accordance with Section 6.01.

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                                    ARTICLE V
                                  CERTIFICATES

     Section 5.01 The Certificates. The Certificates shall be executed by manual
or facsimile signature on behalf of the Securities Administrator by an
authorized officer. Certificates bearing the manual or facsimile signatures of
individuals who were, at the time when such signatures were affixed, authorized
to sign on behalf of the Securities Administrator shall bind the Issuing Entity,
notwithstanding that such individuals or any of them have ceased to be so
authorized prior to the authentication and delivery of such Certificates or did
not hold such offices at the date of such authentication and delivery. No
Certificate shall be entitled to any benefit under this Agreement, or be valid
for any purpose, unless there appears on such Certificate a certificate of
authentication substantially in the form set forth as attached hereto executed
by the Securities Administrator by manual signature, and such certificate of
authentication upon any Certificate shall be conclusive evidence, and the only
evidence, that such Certificate has been duly authenticated and delivered
hereunder. All Certificates shall be dated the date of their authentication. On
the Closing Date, the Securities Administrator shall authenticate the
Certificates to be issued at the written direction of the Depositor, or any
Affiliate thereof.

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

     (a) The Securities Administrator shall maintain, or cause to be maintained
in accordance with the provisions of Section 5.09 hereof, a Certificate Register
for the Trust Fund in which, subject to the provisions of Sections (b) and (c)
below and to such reasonable regulations as it may prescribe, the Securities
Administrator 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 Securities Administrator shall
authenticate and deliver, in the name of the designated transferee or
transferees, one or more new Certificates of the same Class and of like
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 Securities Administrator. Whenever any
Certificates are so surrendered for exchange, the Securities Administrator shall
execute, authenticate and deliver the Certificates that the Certificateholder
making the exchange is entitled to receive. Every Certificate presented or
surrendered for registration of Transfer or exchange shall be accompanied by a
written instrument of Transfer in form satisfactory to the Securities
Administrator duly executed by the holder thereof or his attorney duly
authorized in writing.

     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
canceled and subsequently destroyed by the Securities Administrator in
accordance with such Securities Administrator's customary procedures.

                                      -92-

<PAGE>

     (b) No Transfer of a Class C or Class P 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. 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 (except with
respect to the initial transfer of a Class C or Class P Certificate by Merrill
Lynch & Co.) each certify to each Securities Administrator in writing the facts
surrounding the Transfer in substantially the form set forth in Exhibit F-1 (the
"Transferor Representation Letter") and (i) deliver a letter in substantially
the form of either Exhibit F-2 (the "Investor Representation Letter") or Exhibit
F-3 (the "Rule 144A Letter") or (ii) there shall be delivered to the Securities
Administrator an Opinion of Counsel that such Transfer may be made pursuant to
an exemption from the Securities Act, which Opinion of Counsel shall not be an
expense of the Depositor or the Securities Administrator. The Depositor shall
provide to any Holder of a Class C or Class P Certificate and any prospective
transferee designated by any such Holder, information regarding the related
Certificates and the Mortgage Loans and such other information as shall be
necessary to satisfy the condition to eligibility set forth in Rule 144A(d)(4)
for Transfer of any such Certificate without registration thereof under the
Securities Act pursuant to the registration exemption provided by Rule 144A. The
Securities Administrator shall cooperate with the Depositor in providing the
Rule 144A information referenced in the preceding sentence, including providing
to the Depositor such information in the possession of the Securities
Administrator regarding the Certificates, the Mortgage Loans and other matters
regarding the Trust Fund as the Depositor shall reasonably request to meet its
obligation under the preceding sentence. Each Holder of a Class C or Class P
Certificate desiring to effect such Transfer shall, and does hereby agree to,
indemnify the Depositor and the Securities Administrator 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.

     Notwithstanding the foregoing, no Transfer of a Class C or Class P
Certificate (including the initial issuance thereof) shall be registered unless
the prospective transferee certifies to the Securities Administrator that such
transferee is not acquiring the Class C or Class P Certificates as a "middleman"
as that term is defined in Treasury Regulation Section 1.671-5(b)(10) in a
letter substantially in the form set forth in Exhibit F-4 ("Middleman
Representation Letter").

     No transfer of a Certificate that is neither an ERISA Restricted
Certificate nor a Class R Certificate shall be registered unless the transferee
provides the Securities Administrator with a representation that either (i) such
transferee is not, and is not acting for, on behalf of or with any assets of, an
employee benefit plan or other arrangement subject to Title I of ERISA or plan
subject to Section 4975 of the Code, or (ii) until the termination of the Swap
Agreement and the Cap Agreement, the acquisition and holding of the Certificate
will not constitute or result in a nonexempt prohibited transaction under Title
I of ERISA or Section 4975 of the Code.

     No transfer of an ERISA Restricted Certificate or a Class R Certificate
will be registered unless the Securities Administrator has received (A) a
representation to the effect that such transferee is not an employee benefit
plan subject to Title I of ERISA, a plan subject to Section 4975 of the Code or
a plan subject to any state, local, federal, non-U.S. or other law substantively
similar to the foregoing provisions of ERISA or the Code ("Similar Law")
(collectively, a

                                      -93-

<PAGE>

"Plan"), and is not directly or indirectly acquiring such Certificate for, on
behalf of, or with any assets of any such Plan, or (B) solely in the case of an
ERISA Restricted Certificate (I) if the Certificate has been the subject of an
ERISA-Qualifying Underwriting, a representation to the effect that such
transferee is an insurance company that is acquiring the Certificate with assets
contained in an "insurance company general account," as defined in Section V(e)
of Prohibited Transaction Class Exemption ("PTCE") 95-60, and the acquisition
and holding of the Certificate are covered and exempt under Sections I and III
of PTCE 95-60, or (II) solely in the case of a Definitive Certificate, an
Opinion of Counsel satisfactory to the Securities Administrator, and upon which
the Securities Administrator shall be entitled to rely, to the effect that the
acquisition and holding of such Certificate will not constitute or result in a
nonexempt prohibited transaction under Title I of ERISA or Section 4975 of the
Code, or a violation of Similar Law, and will not subject the Securities
Administrator, the Master Servicer, the Trustee or the Depositor to any
obligation in addition to those expressly undertaken in this Agreement, which
Opinion of Counsel shall not be an expense of the Securities Administrator, the
Master Servicer, the Trustee or the Depositor.

     Except in the case of a Definitive Certificate, the representations set
forth in the two immediately preceding paragraphs of this Section 5.02(b), other
than clause (B)(II) in the immediately preceding paragraph, shall be deemed to
have been made to the Securities Administrator by the transferee's acceptance of
a Certificate (or the acceptance by a Certificate Owner of the beneficial
interest in any Class of Certificate).

     Notwithstanding any other provision herein to the contrary, any purported
transfer of a Certificate to or on behalf of a Plan without the delivery to the
Securities Administrator of a representation or an Opinion of Counsel
satisfactory to the Securities Administrator as described above shall be void
and of no effect. The Securities Administrator shall not be under any liability
to any Person for any registration or transfer of any Certificate that is in
fact not permitted by this Section 5.02(b), nor shall the Trustee or the
Securities Administrator be under any liability 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 by the Securities Administrator in accordance with the foregoing
requirements. The Trustee or the Securities Administrator shall be entitled, but
not obligated, to recover from any Holder of any Certificate that was in fact a
Plan and that held such Certificate in violation of this Section 5.02(b) all
payments made on such Certificate at and after the time it commenced such
holding. Any such payments so recovered shall be paid and delivered to the last
preceding Holder of such Certificate that is not a Plan.

     (c) Each Person who has or who acquires any Ownership Interest in a Class R
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 Class R Certificate are
expressly subject to the following provisions:

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

                                      -94-

<PAGE>

          (ii) No Ownership Interest in a Class R Certificate may be purchased,
     transferred or sold, directly or indirectly, except in accordance with the
     provisions hereof. No Ownership Interest in a Class R Certificate may be
     registered on the Closing Date or thereafter transferred, and the
     Securities Administrator shall not register the Transfer of any Class R
     Certificate unless, in addition to the certificates required to be
     delivered to the Securities Administrator under subparagraph (b) above, the
     Securities Administrator shall have been furnished with an affidavit (a
     "Transferee's Letter") of the initial owner or the proposed transferee in
     the form attached hereto as Exhibit E-1 and an affidavit (a "Transferor
     Certificate") of the proposed transferor in the form attached hereto as
     Exhibit E-2. In the absence of a contrary instruction from the transferor
     of a Class R Certificate, declaration (11) in Appendix A of the
     Transferee's Letter may be left blank. If the transferor requests by
     written notice to the Securities Administrator prior to the date of the
     proposed transfer that one of the two other forms of declaration (11) in
     Appendix A of the Transferee's Letter be used, then the requirements of
     this Section 5.02(c)(ii) shall not have been satisfied unless the
     Transferee's Letter includes such other form of declaration.

          (iii) Each Person holding or acquiring any Ownership Interest in a
     Class R Certificate shall agree (A) to obtain a Transferee's Letter from
     any other Person to whom such Person attempts to Transfer its Ownership
     Interest in a Class R Certificate, (B) to obtain a Transferee's Letter from
     any Person for whom such Person is acting as nominee, trustee or agent in
     connection with any Transfer of a Class R Certificate and (C) not to
     Transfer its Ownership Interest in a Class R Certificate or to cause the
     Transfer of an Ownership Interest in a Class R Certificate to any other
     Person if it has actual knowledge that such Person is not a Permitted
     Transferee. Further, no transfer, sale or other disposition of any
     Ownership Interest in a Class R Certificate may be made to a person who is
     not a U.S. Person (within the meaning of Section 7701 of the Code) unless
     such person furnishes the transferor and the Securities Administrator with
     a duly completed and effective Internal Revenue Service Form W-8ECI (or any
     successor thereto) and the Securities Administrator consents to such
     transfer, sale or other disposition in writing.

          (iv) Any attempted or purported Transfer of any Ownership Interest in
     a Class R 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 Class R 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 Class R Certificate. The Securities Administrator shall be
     under no liability to any Person for any registration of Transfer of a
     Class R 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 related Transferee's Letter. The Securities
     Administrator shall be entitled but not obligated to recover from any
     Holder of a Class R 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 Class R
     Certificate at and after either such time. Any such payments so recovered
     by the Securities

                                      -95-

<PAGE>

     Administrator shall be paid and delivered by the Securities Administrator
     to the last preceding Permitted Transferee of such Certificate.

          (v) At the option of the Holder of the Class R Certificate, the Class
     SWR Interest, the Class LTR Interest and the Residual Interest may be
     severed and represented by separate certificates (with the separate
     certificate that represents the Residual Interest also representing all
     rights of the Class R Certificate to distributions attributable to an
     interest rate on the Class R Certificate in excess of the REMIC
     Pass-Through Rate); provided, however, that such separate certification may
     not occur until the Securities Administrator receives a REMIC Opinion to
     the effect that separate certification in the form and manner proposed
     would not result in the imposition of federal tax upon the Issuing Entity
     or any of the REMICs provided for herein or cause any of the REMICs
     provided for herein to fail to qualify as a REMIC; and provided further,
     that the provisions of Sections 5.02(b) and (c) will apply to each such
     separate certificate as if the separate certificate were a Class R
     Certificate. If, as evidenced by a REMIC Opinion, it is necessary to
     preserve the REMIC status of any of the REMICs provided for herein, the
     Class SWR Interest, the Class LTR Interest and the Residual Interest shall
     be severed and represented by separate Certificates (with the separate
     certificate that represents the Residual Interest also representing all
     rights of the Class R Certificate to distributions attributable to an
     interest rate on the Class R Certificate in excess of the REMIC
     Pass-Through Rate).

     The restrictions on Transfers of a Class R Certificate set forth in this
Section 5.02(c) shall cease to apply (and the applicable portions of the legend
on a Class R Certificate may be deleted) with respect to Transfers occurring
after delivery to the Securities Administrator of an Opinion of Counsel, which
Opinion of Counsel shall not be an expense of the Securities Administrator or
the Depositor, to the effect that the elimination of such restrictions will not
cause any of the REMICs provided for herein 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 Issuing Entity, any REMIC provided for herein, a Certificateholder or
another Person. Each Person holding or acquiring any Ownership Interest in a
Class R Certificate hereby consents to any amendment of this Agreement that,
based on an Opinion of Counsel furnished to the Securities Administrator, is
reasonably necessary (a) to ensure that the record ownership of, or any
beneficial interest in, a Class R 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 Class R Certificate that is held by a
Person that is not a Permitted Transferee to a Holder that is a Permitted
Transferee.

     (d) The transferor of the Class R Certificate shall notify the Securities
Administrator in writing upon the transfer of the Class R Certificate.

     (e) The preparation and delivery of all certificates, opinions and other
writings referred to above in this Section 5.02 shall not be an expense of the
Issuing Entity, the Depositor or the Securities Administrator.

     Section 5.03 Mutilated, Destroyed, Lost or Stolen Certificates. If (a) any
mutilated Certificate is surrendered to the Securities Administrator or the
Securities Administrator receives evidence to its satisfaction of the
destruction, loss or theft of any Certificate and of the ownership

                                      -96-

<PAGE>

thereof and (b) there is delivered to the Securities Administrator and the NIMs
Insurer such security or indemnity as may be required by them to save each of
them harmless, then, in the absence of notice to the Securities Administrator
that such Certificate has been acquired by a bona fide purchaser, the Securities
Administrator shall execute, authenticate 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 Securities
Administrator 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 Securities Administrator)
connected therewith. Any replacement Certificate issued pursuant to this Section
5.03 shall constitute complete and indefeasible evidence of ownership in the
Trust Fund, as if originally issued, whether or not the lost, stolen or
destroyed Certificate shall be found at any time. All Certificates surrendered
to the Securities Administrator under the terms of this Section 5.03 shall be
canceled and destroyed by the Securities Administrator in accordance with its
standard procedures without liability on its part.

     Section 5.04 Persons Deemed Owners. The NIMs Insurer, Securities
Administrator and any agent of the Securities Administrator 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 Securities Administrator, NIMs
Insurer, nor any agent of the Securities Administrator or NIMs Insurer 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 (a) request such information in writing from
the Securities Administrator, (b) state that such Certificateholders desire to
communicate with other Certificateholders with respect to their rights under
this Agreement or under the Certificates, and (c) provide a copy of the
communication that such Certificateholders propose to transmit or if the NIMs
Insurer or the Depositor shall request such information in writing from the
Securities Administrator, then the Securities Administrator shall, within ten
Business Days after the receipt of such request, provide the Depositor, the NIMs
Insurer or such Certificateholders at such recipients' expense the most recent
list of the Certificateholders of the Trust Fund held by the Securities
Administrator, if any. The Depositor and every Certificateholder, by receiving
and holding a Certificate, agree that the Securities Administrator shall not be
held accountable by reason 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 Book-Entry Certificates. The Regular Certificates, upon
original issuance, shall be issued in the form of one or more typewritten
Certificates representing the Book-Entry Certificates, to be delivered to the
Depository by or on behalf of the Depositor. The Book-Entry Certificates shall
initially be registered on the Certificate Register in the name of the
Depository or its nominee, and no Certificate Owner of a Book-Entry Certificate
will receive a definitive certificate representing such Certificate Owner's
interest in such Certificates, except as provided in Section 5.08. Unless and
until definitive, fully registered Certificates ("Definitive Certificates") have
been issued to the Certificate Owners of the Book-Entry Certificates pursuant to
Section 5.08:

                                      -97-

<PAGE>

     (a) the provisions of this Section shall be in full force and effect;

     (b) the Depositor, the NIMs Insurer and the Securities Administrator may
deal with the Depository and the Depository Participants for all purposes
(including the making of distributions) as the authorized representative of the
respective Certificate Owners of the Book-Entry Certificates;

     (c) registration of the Book-Entry Certificates may not be transferred by
the Securities Administrator except to another Depository;

     (d) the rights of the respective Certificate Owners of the Book-Entry
Certificates shall be exercised only through the Depository and the Depository
Participants and shall be limited to those established by law and agreements
between the Owners of the Book-Entry Certificates and the Depository and/or the
Depository Participants. Pursuant to the Depository Agreement, unless and until
Definitive Certificates are issued pursuant to Section 5.08, the Depository will
make book-entry transfers among the Depository Participants and receive and
transmit distributions of principal and interest on the related Certificates to
such Depository Participants;

     (e) the Depository may collect its usual and customary fees, charges and
expenses from its Depository Participants;

     (f) the Securities Administrator may rely and shall be fully protected in
relying upon information furnished by the Depository with respect to its
Depository Participants; and

     (g) to the extent that the provisions of this Section conflict with any
other provisions of this Agreement, the provisions of this Section shall
control.

     For purposes of any provision of this Agreement requiring or permitting
actions with the consent of, or at the direction of, Certificateholders
evidencing a specified percentage of the aggregate unpaid principal amount of
any Class of Certificates, such direction or consent may be given by Certificate
Owners (acting through the Depository and the Depository Participants) owning
Book-Entry Certificates evidencing the requisite percentage of principal amount
of such Class of Certificates.

     Section 5.07 Notices to Depository. Whenever any notice or other
communication is required to be given to Certificateholders of the Class with
respect to which Book-Entry Certificates have been issued, unless and until
Definitive Certificates shall have been issued to the related Certificate
Owners, the Securities Administrator shall give all such notices and
communications to the Depository.

     Section 5.08 Definitive Certificates. If, after Book~Entry Certificates
have been issued with respect to any Certificates, (a) the Depository or the
Depositor advises the Securities Administrator that the Depository is no longer
willing, qualified or able to discharge properly its responsibilities under the
Depository Agreement with respect to such Certificates and the Securities
Administrator or the Depositor is unable to locate a qualified successor, (b)
the Depositor notifies the Securities Administrator and the Depository of its
intent to terminate the book~entry system through the Depository and, upon
receipt of notice of such intent from the Depository, the Certificate Owners of
the Book~Entry Certificates agree to initiate such

                                      -98-

<PAGE>

termination or (c) after the occurrence and continuation of an Event of Default,
Certificate Owners of such Book~Entry Certificates having not less than 51% of
the Voting Rights evidenced by any Class of Book~Entry Certificates advise the
Securities Administrator and the Depository in writing through the Depository
Participants that the continuation of a book~entry system with respect to
Certificates of such Class through the Depository (or its successor) is no
longer in the best interests of the Certificate Owners of such Class, then the
Securities Administrator shall notify all Certificate Owners of such Book~Entry
Certificates and the NIMs Insurer, through the Depository, of the occurrence of
any such event and of the availability of Definitive Certificates to Certificate
Owners of such Class requesting the same. The Depositor shall provide the
Securities Administrator with an adequate inventory of certificates to
facilitate the issuance and transfer of Definitive Certificates. Upon surrender
to the Securities Administrator of any such Certificates by the Depository,
accompanied by registration instructions from the Depository for registration,
the Securities Administrator shall authenticate and deliver such Definitive
Certificates. Neither the Depositor nor the Securities Administrator shall be
liable for any delay in delivery of such instructions and each may conclusively
rely on, and shall be protected in relying on, such instructions. Upon the
issuance of such 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 Securities Administrator, to the extent applicable
with respect to such Definitive Certificates and the Securities Administrator
shall recognize the Holders of such Definitive Certificates as
Certificateholders hereunder.

     Section 5.09 Maintenance of Office or Agency. The Securities Administrator
will maintain or cause to be maintained at its expense an office or offices or
agency or agencies where Certificates may be surrendered for registration of
transfer or exchange. The Securities Administrator initially designates its
offices at Sixth Street and Marquette Avenue, Minneapolis, Minnesota 55479,
Attention: Client Service Manager - Merrill Lynch Alternative Note Asset Trust,
Series 2007-OAR4 as offices for such purposes. The Securities Administrator will
give prompt written notice to the Certificateholders of any change in such
location of any such office or agency. For the avoidance of doubt, the
Securities Administrator may satisfy the requirements of this Section 5.09 by
maintaining a single office or agency.

                                   ARTICLE VI
                         PAYMENTS TO CERTIFICATEHOLDERS

     Section 6.01 Distributions on the Certificates.

     (a) [Reserved]

     (b) On each Distribution Date, amounts on deposit in the Distribution
Account shall be treated for federal income tax purposes as applied to
distributions on the interests in each of the SWAP REMIC and the Lower Tier
REMIC in an amount sufficient to make the distributions on the respective
Certificates on such Distribution Date in accordance with the provisions of this
Section 6.01.

     On each Distribution Date, the interest distributable with respect to each
class of Certificates is the interest which has accrued thereon at the then
applicable related Pass-Through

                                      -99-

<PAGE>

Rate during the related Accrual Period less applicable related Prepayment
Interest Shortfalls and Deferred Interest, if any, allocated to that class.

     All calculations of interest on the Certificates will be made on the basis
of a 360-day year and the actual number of days elapsed in the applicable
Accrual Period.

     (c) On each Distribution Date (or on the related Swap Payment Date, with
respect to payments to the Supplemental Interest Trust), the Interest Funds for
such Distribution Date are required to be distributed in the following order of
priority, until such Interest Funds have been fully distributed:

               (i) to the Class P Certificates, any Prepayment Charges collected
          on the Prepayment Charge Mortgage Loans and (A) any amounts paid by
          the Sponsor or the applicable Servicer in respect of Prepayment
          Charges pursuant to this Agreement and (B) any amounts received in
          respect of any indemnification paid as a result of a Prepayment Charge
          being unenforceable in breach of the representations and warranties
          set forth in the Mortgage Loan Purchase Agreement received during the
          related Prepayment Period;

               (ii) to the Supplemental Interest Trust, any Net Swap Payments
          owed to the Swap Counterparty;

               (iii) to the Supplemental Interest Trust, any Swap Termination
          Payment owed by the Supplemental Interest Trust to the Swap
          Counterparty (other than any Defaulted Swap Termination Payment);

               (iv) concurrently, to each class of the Senior Certificates, the
          Current Interest and any Interest Carry Forward Amount with respect to
          each such class; provided, however, that if Interest Funds are
          insufficient to make a full distribution of the aggregate Current
          Interest and the aggregate Interest Carry Forward Amount to the Senior
          Certificates, Interest Funds will be distributed pro rata among each
          class of the Senior Certificates based upon the ratio of (x) the
          Current Interest and Interest Carry Forward Amount for each class of
          the Senior Certificates to (y) the total amount of Current Interest
          and any Interest Carry Forward Amount for the Senior Certificates in
          the aggregate;

               (v) to the Class M-1 Certificates, the Current Interest for such
          class and any Interest Carry Forward Amount with respect to such
          class;

               (vi) to the Class M-2 Certificates, the Current Interest for such
          class and any Interest Carry Forward Amount with respect to such
          class;

               (vii) to the Class M-3 Certificates, the Current Interest for
          such class and any Interest Carry Forward Amount with respect to such
          class;

               (viii) to the Class M-4 Certificates, the Current Interest for
          such class and any Interest Carry Forward Amount with respect to such
          class;

                                     -100-

<PAGE>

               (ix) to the Class M-5 Certificates, the Current Interest for such
          class and any Interest Carry Forward Amount with respect to such
          class;

               (x) to the Class M-6 Certificates, the Current Interest for such
          class and any Interest Carry Forward Amount with respect to such
          class;

               (xi) to the Class B-1 Certificates, the Current Interest for each
          such class and any Interest Carry Forward Amount with respect to each
          such class;

               (xii) to the Class B-2 Certificates, the Current Interest for
          each such class and any Interest Carry Forward Amount with respect to
          each such class;

               (xiii) to the Class B-3 Certificates, the Current Interest for
          each such class and any Interest Carry Forward Amount with respect to
          each such class; and

               (xiv) any remainder pursuant to Section 6.01(g) hereof.

     With respect to any Distribution Date, to the extent that the Prepayment
Interest Shortfall exceeds the Compensating Interest Payment payable by the
Servicers or the Master Servicer, such amount shall reduce the Current Interest
with respect to each Class of Certificates, pro rata, based upon the amount of
interest each such Class would otherwise be entitled to receive on such
Distribution Date.

     Any interest shortfall resulting from Deferred Interest on the Mortgage
Loans will be allocated to the Offered Certificates pro rata based upon the
current Certificate Principal Balance of each such class, up to the Current
Interest accrued on such class of Certificates, in reduction of the amount of
interest otherwise distributable to such class of Certificates; provided,
however, that to the extent the amount of Net Negative Amortization otherwise
allocable to a class of Offered Certificates exceeds the amount of Current
Interest accrued on the Corresponding REMIC Regular Interest of such class of
Certificates (as reduced by such class's share of any Prepayment Interest
Shortfalls for such Distribution Date), then such excess Net Negative
Amortization shall be allocated, first, to the Class C Certificates, to the
extent payments would otherwise be made to the Class C Certificates in respect
of the Uncertificated Class C Interest on such Distribution Date, and, second,
to the Offered Certificates pro rata based upon and up to the amount of any
remaining Current Interest otherwise accrued on the Corresponding REMIC Regular
Interest of each class of Offered Certificates. The amount of the reduction of
Current Interest distributable to each class of Certificates attributable to Net
Negative Amortization will be added to the Certificate Principal Balance of that
class.

     (d) [RESERVED]

     (e) On each Distribution Date (or on the related Swap Payment Date, with
respect to payments to the Supplemental Interest Trust), the Securities
Administrator shall, to the extent of funds then available, make the following
distributions from the Distribution Account of an amount equal to the Principal
Distribution Amount in the following order of priority, and each such
distribution shall be made only after all distributions pursuant to Section
6.01(c) above shall have been made until such amount shall have been fully
distributed for such Distribution Date:

                                     -101-

<PAGE>

               (i) to the Supplemental Interest Trust, any Net Swap Payments
          owed to the Swap Counterparty, to the extent not paid pursuant to
          Section 6.01(c)(ii);

               (ii) to the Supplemental Interest Trust, any Swap Termination
          Payment owed by the Supplemental Interest Trust to the Swap
          Counterparty (other than any Defaulted Swap Termination Payment), to
          the extent not paid pursuant to Section 6.01(c)(iii);

               (iii) to the Senior Certificates, the Senior Principal
          Distribution Amount as follows: first, to the Class R Certificate
          until its Certificate Principal Balance has been reduced to zero, and
          second, pro rata (i) based upon their aggregate Certificate Principal
          Balance, sequentially to the Class A-1 Certificates and Class A-2
          Certificates in that order and (ii) to the Class A-3 Certificates
          based upon its Certificate Principal Balance, in each case; until the
          Certificate Principal Balance of each such Class has been reduced to
          zero; provided, however, if the Certificate Principal Balance of each
          of the Class A-3, Class M-1, Class M-3, Class M-4, Class M-5, Class
          M-6, Class B-1, Class B-2 and Class B-3 Certificates have been reduced
          to zero, pro rata to the Class A-1 and Class A-2 Certificates;

               (iv) to the Class M-1 Certificates, the Class M-1 Principal
          Distribution Amount;

               (v) to the Class M-2 Certificates, the Class M-2 Principal
          Distribution Amount;

               (vi) to the Class M-3 Certificates, the Class M-3 Principal
          Distribution Amount;

               (vii) to the Class M-4 Certificates, the Class M-4 Principal
          Distribution Amount;

               (viii) to the Class M-5 Certificates, the Class M-5 Principal
          Distribution Amount;

               (ix) to the Class M-6 Certificates, the Class M-6 Principal
          Distribution Amount;

               (x) to the Class B-1 Certificates, the Class B-1 Principal
          Distribution Amount;

               (xi) to the Class B-2 Certificates, the Class B-2 Principal
          Distribution Amount;

               (xii) to the Class B-3 Certificates, the Class B-3 Principal
          Distribution Amount; and

               (xiii) any remainder pursuant to Section 6.01(g) hereof.

                                     -102-

<PAGE>

     (f) [RESERVED]

     (g) On each Distribution Date (or on the related Swap Payment Date, with
respect to payments to the Supplemental Interest Trust), the Securities
Administrator shall, to the extent of Interest Funds and Principal Funds then
available, make the following distributions up to the following amounts from the
Distribution Account of the remainders pursuant to Section 6.01(c)(xiv) and
(e)(xiii) hereof and each such distribution shall be made only after all
distributions pursuant to Sections 6.01(c) and (e) above shall have been made
until such remainders shall have been fully distributed for such Distribution
Date:

               (i) to the Senior Certificates, any amounts due as described in
          the same order of priority as set forth in Section 6.01(c)(iv) to the
          extent unpaid by Interest Funds;

               (ii) to the Subordinate Certificates, any amounts due as
          described in the same order of priority as set forth in Section
          6.01(c)(v) through (xiii) to the extent unpaid by Interest Funds;

               (iii) the Extra Principal Distribution Amount;

               (iv) pro rata to the Class A-1 and the Class A-2 Certificates,
          any Unpaid Realized Loss Amount for such classes;

               (v) to the Class A-3 Certificates, any Unpaid Realized Loss
          Amount for such class;

               (vi) to the Class M-1 Certificates, any Unpaid Realized Loss
          Amount for such class;

               (vii) to the Class M-2 Certificates, any Unpaid Realized Loss
          Amount for such class;

               (viii) to the Class M-3 Certificates, any Unpaid Realized Loss
          Amount for such class;

               (ix) to the Class M-4 Certificates, any Unpaid Realized Loss
          Amount for such class;

               (x) to the Class M-5 Certificates, any Unpaid Realized Loss
          Amount for such class;

               (xi) to the Class M-6 Certificates, any Unpaid Realized Loss
          Amount for such class;

               (xii) to the Class B-1 Certificates, any Unpaid Realized Loss
          Amount for such class;

                                     -103-

<PAGE>

               (xiii) to the Class B-2 Certificates, any Unpaid Realized Loss
          Amount for such class;

               (xiv) to the Class B-3 Certificates, any Unpaid Realized Loss
          Amount for such class;

               (xv) to the Offered Certificates, on a pro rata basis, based upon
          outstanding Floating Rate Certificate Carryover for each such Class,
          the Floating Rate Certificate Carryover for each such Class;

               (xvi) to the Supplemental Interest Trust, any Defaulted Swap
          Termination Payment to the extent not already paid; and

               (xvii) the remainder pursuant to Section 6.01(h) hereof.

     (h) on each Distribution Date, the Securities Administrator shall allocate
the remainder pursuant to Section 6.01(g)(xvii) as follows:

               (i) to the Class C Certificates in the following order of
          priority, (I) the Class C Current Interest, (II) the Class C Interest
          Carry Forward Amount, (III) as principal on the Class C Certificate
          until the Certificate Principal Balance of the Class C Certificates
          has been reduced to zero and (IV) the Class C Unpaid Realized Loss
          Amount; and

               (ii) the remainder pursuant to Section 6.01(i) hereof.

     (i) On each Distribution Date, the Securities Administrator shall allocate
the remainder pursuant to Section 6.01(h)(ii) hereof (i) to the Securities
Administrator to reimburse amounts or pay indemnification amounts owing to the
Securities Administrator from the Issuing Entity pursuant to Section 7.03 and
(ii) to the Class R Certificate and such distributions shall be made only after
all preceding distributions shall have been made until such remainder shall have
been fully distributed.

     (j) On each Distribution Date, after giving effect to distributions on such
Distribution Date, the Securities Administrator shall allocate the Realized Loss
Amount for the Certificates to reduce the Certificate Principal Balances of the
Class C Certificates and the Certificates in the following order of priority:

               (i) to the Class C Certificates, until the Class C Certificate
          Principal Balance is reduced to zero;

               (ii) to the Class B-3 Certificates until the Class B-3
          Certificate Principal Balance is reduced to zero;

               (iii) to the Class B-2 Certificates until the Class B-2
          Certificate Principal Balance is reduced to zero;

                                     -104-

<PAGE>

               (iv) to the Class B-1 Certificates until the Class B-1
          Certificate Principal Balance is reduced to zero;

               (v) to the Class M-6 Certificates until the Class M-6 Certificate
          Principal Balance is reduced to zero;

               (vi) to the Class M-5 Certificates until the Class M-5
          Certificate Principal Balance is reduced to zero;

               (vii) to the Class M-4 Certificates until the Class M-4
          Certificate Principal Balance is reduced to zero;

               (viii) to the Class M-3 Certificates until the Class M-3
          Certificate Principal Balance is reduced to zero;

               (ix) to the Class M-2 Certificates until the Class M-2
          Certificate Principal Balance is reduced to zero;

               (x) to the Class M-1 Certificates until the Class M-1 Certificate
          Principal Balance is reduced to zero;

               (xi) to the Class A-3 Certificates until the Class A-3
          Certificate Principal Balance is reduced to zero;

               (xii) to the Class A-2 Certificates until the Class A-2
          Certificate Principal Balance is reduced to zero; and

               (xiii) to the Class A-1 Certificates until the Class A-1
          Certificate Principal Balance is reduced to zero.

     (k) Subject to Section 10.02 hereof respecting the final distribution, on
each Distribution Date the Securities Administrator shall make distributions to
each Certificateholder of record on the preceding Record Date either 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 Securities Administrator at least five (5) Business Days prior to
the related Record Date or, if not, by check mailed by first class mail to such
Certificateholder at the address of such holder appearing in the Certificate
Register. Notwithstanding the foregoing, but subject to Section 10.02 hereof
respecting the final distribution, distributions with respect to Certificates
registered in the name of a Depository shall be made to such Depository in
immediately available funds.

     In accordance with this Agreement, the Master Servicer shall prepare and
deliver an electronic report to the Securities Administrator (or by such other
means as the Master Servicer and the Securities Administrator may agree from
time to time) containing such data and information as to permit the Securities
Administrator to prepare the Monthly Statement to Certificateholders and make
the required distributions for the related Distribution Date. The Securities
Administrator will prepare the Monthly Report based solely upon the information

                                     -105-

<PAGE>

received from the Master Servicer, which in turn shall be based on information
from the Servicers and the Cap Contract Counterparty.

     (l) The Securities Administrator is hereby directed by the Depositor to
execute the Corridor Contract on behalf of the Issuing Entity in the form
presented to it by the Depositor and shall have no responsibility for the
contents of such Corridor Contract, including, without limitation, the
representations and warranties contained therein. Any funds payable by the
Issuing Entity under the Corridor Contract at closing shall be paid by the
Depositor. Notwithstanding anything to the contrary contained herein or in the
Corridor Contract, except as set forth in Section 2 of the Corridor Contract,
the Issuing Entity shall not be required to make any payments to the
counterparty under the Corridor Contract. Any payments received under the terms
of the Corridor Contract will be available to pay the holders of the
Certificates up to the amount of any Floating Rate Certificate Carryovers
remaining after all other distributions required under this Section 6.01 are
made on such Distribution Date. Any amounts received under the terms of the
Corridor Contract on a Distribution Date that are not used to pay such Floating
Rate Certificate Carryovers will be distributed to the holders of the Class C
Certificates. Payments in respect of such Floating Rate Certificate Carryovers
from proceeds of the Corridor Contract shall be paid to the Certificates, pro
rata based upon such Floating Rate Certificate Carryovers for each such class of
Certificates. Amounts received on the Corridor Contract will be available to
make payments on the Offered Certificates.

               (i) The Securities Administrator shall establish and maintain,
          for the benefit of the Issuing Entity and the Certificateholders, the
          Corridor Contract Account. On or prior to the Corridor Contract
          Termination Date, amounts, if any, received by the Securities
          Administrator for the benefit of the Trust Fund in respect of the
          Corridor Contract shall be deposited by the Securities Administrator
          into the Corridor Contract Account and will be used to pay Floating
          Rate Certificate Carryovers on the Certificates to the extent provided
          in the immediately preceding paragraph. With respect to any
          Distribution Date on or prior to the Corridor Contract Termination
          Date, the amount, if any, payable by the Cap Contract Counterparty
          under the Corridor Contract will equal the product of (i) the excess
          of (x) One-Month LIBOR (as determined by the Cap Contract Counterparty
          and subject to a cap equal to the rate with respect to such
          Distribution Date as shown under the heading "1ML Upper Collar" in the
          schedule to the Corridor Contract), over (y) the rate with respect to
          such Distribution Date as shown under the heading "1ML Strike Lower
          Collar" in the schedule to the Corridor Contract, (ii) an amount equal
          to the lesser of (x) the Corridor Contract Notional Balance for such
          Distribution Date and (y) the outstanding Certificate Principal
          Balance of the related classes of Certificates and (iii) the number of
          days in such Accrual Period, divided by 360. If a payment is made to
          the Issuing Entity under the Corridor Contract and the Securities
          Administrator is required to distribute excess amounts to the holders
          of the Class C Certificates as described above, information regarding
          such distribution will be included in the monthly statement made
          available on the Securities Administrator's website pursuant to
          Section 6.03 hereof.

                                     -106-

<PAGE>

               (ii) Amounts on deposit in the Corridor Contract Account will
          remain uninvested pending distribution to Certificateholders.

               (iii) The Corridor Contract is scheduled to remain in effect
          until the Corridor Contract Termination Date and will be subject to
          early termination only in limited circumstances. Such circumstances
          include certain insolvency or bankruptcy events in relation to the Cap
          Contract Counterparty, the termination of the Trust Fund, the Corridor
          Contract becoming illegal or subject to certain kinds of taxation and
          certain other events of default and termination events (as further
          detailed in the Corridor Contract).

     (m) On the Closing Date, the Supplemental Interest Trust shall be
established and maintained pursuant to this Agreement, as a separate trust, the
corpus of which shall be held by the Supplemental Interest Trust Trustee for the
benefit of the holders of the Certificates as a segregated subtrust of the Trust
Fund. The Supplemental Interest Trust shall hold the Swap Account, which shall
be an Eligible Account, and funds deposited therein shall be held separate and
apart from, and shall not be commingled with, any other moneys, including,
without limitation, other moneys of the Securities Administrator or the
Supplemental Interest Trust Trustee held pursuant to this Agreement. In no event
shall any funds deposited in the Supplemental Interest Trust be credited to or
made available to any other Account of the Trust Fund. The records of the
Securities Administrator shall at all times reflect that the Supplemental
Interest Trust is a subtrust of the Trust Fund, the assets of which are
segregated from other assets of the Trust Fund.

     The Supplemental Interest Trust Trustee is hereby directed by the Depositor
to execute the Swap Agreement on behalf of the Supplemental Interest Trust in
the form presented to it by the Depositor and shall have no responsibility for
the contents of such Swap Agreement, including, without limitation, the
representations and warranties contained therein. The Supplemental Interest
Trust Trustee shall have all of the rights and protections of the Securities
Administrator hereunder.

     The Supplemental Interest Trust Trustee shall enforce all of the rights of
the Supplemental Interest Trust and exercise any remedies under the Swap
Agreement and, in the event the Swap Agreement is terminated as a result of the
designation by either party thereto of an Early Termination Date (as defined in
the Swap Agreement), at the direction of the Depositor, enter into a replacement
swap agreement with a replacement counterparty appointed by the Depositor
utilizing the amounts of the net Swap Termination Payments received.

     For each Distribution Date, through and including the Distribution Date in
March 2013, the Supplemental Interest Trust Trustee or Securities Administrator,
as applicable, shall, based on the Significance Estimate (which shall be
provided to the Supplemental Interest Trust Trustee by the Depositor within five
(5) Business Days prior to the Distribution Date), calculate the Significance
Percentage of each of the Swap Agreement and the Corridor Contract. If on any
such Distribution Date, the Significance Percentage is equal to or greater than
9%, the Supplemental Interest Trust Trustee or Securities Administrator, as
applicable, shall promptly notify the Depositor and the Depositor shall obtain
the financial information required to be delivered by the Swap Counterparty or
the Cap Contract Counterparty, as applicable, pursuant to

                                     -107-

<PAGE>

the terms of the Swap Agreement or the Corridor Contract, respectively. If, on
any succeeding Distribution Date through and including the Distribution Date in
March 2013, the Significance Percentage is equal to or greater than 10%, the
Supplemental Interest Trust Trustee or Securities Administrator, as applicable,
shall promptly notify the Depositor and the Depositor shall, within five (5)
Business Days following such Distribution Date, deliver to the Securities
Administrator the financial information provided to it by the Swap Counterparty
or Cap Contract Counterparty, as applicable, in Edgar-compatible format for
inclusion in the Form 10-D relating to such Distribution Date.

     Any Swap Termination Payment received by the Supplemental Interest Trust
Trustee shall be deposited in the Swap Account and shall be used to make any
upfront payment required under a replacement swap agreement and any upfront
payment received from the counterparty to a replacement swap agreement shall be
used to pay any Swap Termination Payment owed to the Swap Counterparty.

     Notwithstanding anything contained herein, in the event that a replacement
swap agreement cannot be obtained within thirty (30) days after receipt by the
Supplemental Interest Trust Trustee of the Swap Termination Payment paid by the
terminated Swap Counterparty, the Supplemental Interest Trust Trustee shall
deposit such Swap Termination Payment into a separate, segregated non-interest
bearing account established by the Supplemental Interest Trust Trustee and the
Supplemental Interest Trust Trustee shall, on each Distribution Date following
receipt of such Swap Termination Payment, withdraw from such account, an amount
equal to the Net Swap Payment, if any, that would have been paid to the
Supplemental Interest Trust by the original Swap Counterparty (computed in
accordance with the original Swap Agreement) and distribute such amount in
accordance with Section 6.01(m)(i)-(viii) of this Agreement. Any such account
shall not be an asset of any REMIC. Any amounts remaining in such account shall
be distributed to the holders of the Class C Certificates on the Distribution
Date following the earlier of (i) the termination of the Trust Fund pursuant to
Section 10.01 and (ii) March 25, 2013.

     On any Distribution Date (or in the case of any Net Swap Payments, on the
related Swap Payment Date), any Swap Termination Payments or Net Swap Payments
owed to the Swap Counterparty will be paid out of and any Net Swap Payments or
Swap Termination Payments received from the Swap Counterparty will be deposited
into the Swap Account. The Supplemental Interest Trust will not be an asset of
any REMIC. Funds in the Swap Account within the Supplemental Interest Trust
shall be distributed in the following order of priority by the Securities
Administrator :

               (i) to the Swap Counterparty, all Net Swap Payments, if any, owed
          to the Swap Counterparty for such Distribution Date;

               (ii) to the Swap Counterparty, any Swap Termination Payment,
          other than a Defaulted Swap Termination Payment, if any, owed to the
          Swap Counterparty;

               (iii) to each class of the Senior Certificates, on a pro rata
          basis, any Current Interest and any Interest Carry Forward Amount with
          respect to such class to the extent unpaid;

                                     -108-

<PAGE>

               (iv) sequentially, to the Class M-1 Certificates, the Class M-2
          Certificates, the Class M-3 Certificates, the Class M-4 Certificates,
          the Class M-5 Certificates, the Class M-6 Certificates, the Class B-1
          Certificates, the Class B-2 Certificates and the Class B-3
          Certificates in that order, any Current Interest for such class to the
          extent unpaid;

               (v) sequentially, to the Class M-1 Certificates, the Class M-2
          Certificates, the Class M-3 Certificates, the Class M-4 Certificates,
          the Class M-5 Certificates, the Class M-6 Certificates, the Class B-1
          Certificates, the Class B-2 Certificates and the Class B-3
          Certificates in that order, any Interest Carry Forward with respect to
          such class to the extent unpaid;

               (vi) to the Offered Certificates, to pay principal as described
          and in the same manner and order of priority as set forth in Sections
          6.01(e)(iii) through 6.01(e)(xii) in order to restore levels of the
          Overcollateralization Amount, and after giving effect to distributions
          from Principal Distribution Amount for each such Class;

               (vii) sequentially to (i) pro rata, each of the Class A-1
          Certificates and the Class A-2 Certificates and (ii) each of the Class
          A-3 Certificates, the Class M-1 Certificates, the Class M-2
          Certificates, the Class M-3 Certificates, the Class M-4 Certificates,
          the Class M-5 Certificates, the Class M-6 Certificates, the Class B-1
          Certificates, the Class B-2 Certificates and the Class B-3
          Certificates, in that order, any Unpaid Realized Loss Amount for such
          class to the extent unpaid;

               (viii) to the Offered Certificates, on a pro rata basis, any
          Floating Rate Certificate Carryover to the extent not paid based on
          the amount of such unpaid Floating Rate Certificate Carryover;

               (ix) to the Swap Counterparty, any Defaulted Swap Termination
          Payment owed to the Swap Counterparty to the extent not already paid;
          and

               (x) to the Class C Certificates any remaining amount.

     Notwithstanding the foregoing, however, after giving effect to proposed
distributions on any Distribution Date, the sum of the cumulative amounts
distributed pursuant to clause (vi) above and the cumulative amounts distributed
pursuant to clause (vii) above shall be limited to the aggregate amount of
cumulative Realized Losses incurred from the Cut-off Date through the last day
of the related Prepayment Period.

     Upon termination of the Trust Fund, any amounts remaining in the Swap
Account within the Supplemental Interest Trust shall be distributed pursuant to
the priorities set forth in this Section 6.01(m).

     With respect to the failure of the Swap Counterparty to perform any of its
obligations under the Swap Agreement, the breach by the Swap Counterparty of any
of its representations and warranties made pursuant to the Swap Agreement, or
the termination of the Swap Agreement, the Supplemental Interest Trust Trustee
shall send any notices and make any

                                     -109-

<PAGE>

demands required hereunder (to the extent that a Responsible Officer of the
Securities Administrator has actual knowledge or written notice of any such
failure, breach or termination).

     On the Closing Date, the Swap Counterparty and the Supplemental Interest
Trust Trustee (which is hereby authorized and directed by the Depositor to enter
into such credit support annex) will enter into a credit support annex in
relation to the Swap Agreement, which annex is intended to protect the
Supplemental Interest Trust from certain ratings downgrades that might hinder
the ability of the Swap Counterparty to continue its obligations under the Swap
Agreement.

     Pursuant to and in accordance with the terms and provisions of the Swap
Agreement, the Swap Counterparty may be required to post additional collateral
in connection with its obligations under the Swap Agreement. In connection with
the foregoing, the Supplemental Interest Trust Trustee may be required to
establish a Swap Posted Collateral Account.

     To the extent that the Swap Counterparty remits any Posted Collateral to
the Supplemental Interest Trust Trustee under the Swap Agreement, the
Supplemental Interest Trust Trustee shall, upon receipt of the Posted
Collateral, deposit the Posted Collateral into the Swap Posted Collateral
Account and shall hold, release and disburse such collateral in accordance with
the terms and provisions of the Swap Agreement. Where a termination event occurs
with respect to the Swap Counterparty under the Swap Agreement, or where the
Swap Counterparty fulfills certain obligations to the Supplemental Interest
Trust such as finding a replacement swap counterparty or a guarantor that meets
established criteria of the Rating Agencies, the Supplemental Interest Trust
Trustee shall make payments from the Swap Posted Collateral Account in
accordance with the provisions of the Swap Agreement. Amounts held in the Swap
Posted Collateral Account will not be part of the Trust Fund and will not be
available for distribution to any Certificateholders, except to the extent
distributed to the Swap Account pursuant to the Swap Agreement. Any funds in the
form of cash held in the Swap Posted Collateral Account shall be invested by the
Supplemental Interest Trust Trustee in Permitted Investments described in clause
(ii) of the definition of Permitted Investments in accordance with the
instructions of the Swap Counterparty. Any earnings shall be remitted to the
Swap Counterparty in accordance with the Swap Agreement. Absent receipt by the
Supplemental Interest Trust Trustee of written instructions from the Swap
Counterparty, such funds shall remain uninvested.

     Section 6.02 Distributions.

     (a) On each Distribution Date, other than the final Distribution Date, the
Securities Administrator shall distribute to each Certificateholder of record on
the directly preceding Record Date the Certificateholder's pro rata share of its
Class (based on the aggregate Percentage Interest represented by such Holder's
Certificates) of all amounts required to be distributed on such Distribution
Date to such Class, based solely on information provided to the Securities
Administrator by the Master Servicer. The Securities Administrator shall
calculate the amount to be distributed to each Class and, based on such amounts,
the Securities Administrator shall determine the amount to be distributed to
each Certificateholder. All of the Securities Administrator's calculations of
payments shall be based solely on information provided to the Securities
Administrator by the Master Servicer or the applicable Servicer. The Securities

                                     -110-

<PAGE>

Administrator shall not be required to confirm, verify or recompute any such
information but shall be entitled to rely conclusively on such information.

     (b) Payment of the above amounts to each Certificateholder shall be made
(i) by check mailed to each Certificateholder entitled thereto at the address
appearing in the Certificate Register or (ii) upon receipt by the Securities
Administrator on or before the fifth Business Day preceding the Record Date of
written instructions from a Certificateholder by wire transfer to a United
States dollar account maintained by the payee at any United States depository
institution with appropriate facilities for receiving such a wire transfer;
provided, however, that the final payment in respect of each Class of
Certificates will be made only upon presentation and surrender of such
respective Certificates at the office or agency of the Securities Administrator
specified in the notice to Certificateholders of such final payment.

     Section 6.03 Statements to Certificateholders.

     (a) On each Distribution Date, the Securities Administrator will make
available to each Certificateholder, the Servicers, the Depositor, the NIMS
Insurer (if any) and any other interested party a statement (the "Monthly
Statement"), based in part on information provided by the Master Servicer and
the Servicers generally setting forth among other information with respect to
the Certificates and Mortgage Loans:

     (1)  the amount of the related distribution to holders of each class of
          certificates allocable to principal and any Extra Principal
          Distribution Amount;

     (2)  with respect to the Mortgage Loans, all amounts of principal received,
          separately identifying (A) the aggregate amount of any principal
          prepayments included therein, (B) the aggregate amount of all
          scheduled payments of principal included therein and (C) the aggregate
          amount of Negative Amortization;

     (3)  the amount of such distribution to holders of each class of
          Certificates allocable to interest;

     (4)  the Interest Carry Forward Amount for each class of Certificates;

     (5)  the Certificate Principal Balance of each class of Certificates after
          giving effect to the distribution of principal on such Distribution
          Date; (6) the aggregate outstanding principal balance of each class of
          Certificates for the following Distribution Date;

     (7)  the amount of the Servicing Fee paid to or retained by the Servicers
          and any amounts constituting reimbursement or indemnification of the
          Servicers, the Master Servicer, the Trustee or the Securities
          Administrator;

     (8)  the Pass-Through Rate for each class of Certificates for such
          Distribution Date;

     (9)  the amount of Advances on Mortgage Loans included in the distribution
          on such Distribution Date;

                                     -111-

<PAGE>

     (10) the cumulative amount of (A) Realized Losses and (B) Applied Realized
          Loss Amounts to date;

     (11) the amount of (A) Realized Losses and (B) Applied Realized Loss
          Amounts with respect to such Distribution Date;

     (12) the number and aggregate principal amounts of Mortgage Loans (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 such Distribution Date, with
          respect to each group of Mortgage Loans and in accordance with the MBA
          methodology for measuring delinquencies;

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

     (14) whether a Stepdown Trigger Event has occurred and is in effect;

     (15) the total number and principal balance of any REO Properties as of the
          close of business on the related Determination Date, in the aggregate;

     (16) any Floating Rate Certificate Carryover paid and all Floating Rate
          Certificate Carryover remaining on each class of the Certificates on
          such Distribution Date;

     (17) the number and amount of Prepayment Charges applicable to the related
          Prepayment Period in the aggregate;

     (18) as of each Distribution Date, the amount, if any, received pursuant to
          each Corridor Contract and the amount thereof to be paid to each class
          of Certificates;

     (19) [Reserved];

     (20) as of each Distribution Date, the amount of any Net Swap Payments or
          Swap Termination Payments paid or received by the Supplemental
          Interest Trust pursuant to the Swap Agreement and the amount of any
          Defaulted Swap Termination Payments paid by the Supplemental Interest
          Trust;

     (21) the number of Mortgage Loans with respect to which (i) a reduction in
          the Mortgage Interest Rate has occurred or (ii) the related borrower's
          obligation to repay interest on a monthly basis has been suspended or
          reduced pursuant to the Relief Act; and the amount of interest not
          required to be paid with respect to any such Mortgage Loans during the
          related Due Period as a result of such reductions;

     (22) the amounts distributed as interest in respect of the portion of each
          class of Certificates that represents a regular or residual interest
          in a REMIC and the amount of distributions on each class of
          certificates not treated as distributions on a regular or residual
          interest in a REMIC;

                                     -112-

<PAGE>

     (23) the aggregate amount of all Advances with respect to the Mortgage
          Loans recovered for such Distribution Date;

     (24) the allocation to each Class of Certificates of any Realized Losses
          for such Distribution Date;

     (25) with respect to each Class of Certificates, the amount of any
          Prepayment Interest Shortfalls for such Distribution Date; and

     (26) 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 pool asset
          substitutions and repurchases (and purchase rates, if applicable).

     The Securities Administrator may make available each month, to any
interested party, the monthly statement via the Securities Administrator's
website. The Securities Administrator will also make available on its website
any reports on Form 10-D, Form 10-K and Form 8-K that have been prepared and
filed by the Securities Administrator with respect to the Issuing Entity
promptly after such material is electronically filed with, or furnished to, the
Securities and Exchange Commission. The Securities Administrator's website will
be located at www.ctslink.com, and assistance in using the website can be
obtained by calling the Securities Administrator's customer service desk at
(866) 846-4526. Parties that are unable to use the above distribution option are
entitled to have a paper copy mailed to them via first class mail by notifying
the Securities Administrator at the following address: Wells Fargo Bank, N.A.,
9062 Old Annapolis Road, Columbia, Maryland 21045, Attention: Client Manager --
MLMI 2007-OAR4. The Securities Administrator will have the right to change the
way such reports are distributed in order to make such distributions more
convenient and/or more accessible, and the Securities Administrator will provide
timely and adequate notification to such parties regarding any such changes.

     In addition, within a reasonable period of time after the end of each
calendar year, the Securities Administrator will, upon request, prepare and
deliver to each Holder of a Certificate of record during the previous calendar
year and the NIMs Insurer, if any, upon its written request a statement
containing information necessary to enable Holders of the Certificates to
prepare their tax returns. These statements will not have been examined and
reported upon by an independent public accountant.

     (b) By January 30 of each year beginning in 2008, if so requested in
writing, the Securities Administrator will furnish such report to each Holder of
the Certificates of record at any time during the prior calendar year as to the
aggregate of amounts reported pursuant to subclauses (a)(ii) and (a)(v) above
with respect to the Certificates, plus information with respect to the amount of
servicing compensation and such other customary information as the Securities
Administrator may determine to be necessary and/or to be required by the
Internal Revenue Service or by a federal or state law or rules or regulations to
enable such Holders to prepare their tax returns for such calendar year. Such
obligations shall be deemed to have been satisfied to the extent that
substantially comparable information shall be provided by the Securities
Administrator pursuant to the requirements of the Code.

                                     -113-
<PAGE>

     Section 6.04 Advances. If the Monthly Payment on a Mortgage Loan that was
due on a related Due Date and is Delinquent other than as a result of
application of the Relief Act and for which the applicable Servicer was required
to make an advance pursuant to this Agreement exceeds the amount deposited in
the Master Servicer Collection Account that will be used for a Advance with
respect to such Mortgage Loan, the Master Servicer will deposit in the Master
Servicer Collection Account not later than the Distribution Account Deposit Date
immediately preceding the related Distribution Date an amount equal to such
deficiency, net of the Servicing Fee for such Mortgage Loan, except to the
extent the Master Servicer determines any such Advance to be nonrecoverable from
Liquidation Proceeds, Insurance Proceeds or future payments on the Mortgage Loan
for which such Advance was made. If the Master Servicer has not deposited the
amount described above as of the related Distribution Account Deposit Date, the
Trustee will, subject to applicable law and its determination of recoverability,
deposit in the Master Servicer Collection Account not later than the related
Distribution Date, an amount equal to the remaining deficiency as of the
Distribution Account Deposit Date. Subject to the foregoing, the Master Servicer
shall continue to make such Advances through the date that the applicable
Servicer is required to do so under the Applicable Servicing Agreement. If
applicable, on the Distribution Account Deposit Date, the Master Servicer shall
present an Officer's Certificate to the Securities Administrator (i) stating
that the Master Servicer elects not to make a Advance in a stated amount and
(ii) detailing the reason it deems the advance to be nonrecoverable.

     Section 6.05 Compensating Interest Payments. The Master Servicer shall
deposit in the Master Servicer Collection Account not later than each
Distribution Account Deposit Date an amount equal to the aggregate amounts
required to be paid by the Servicers under the Applicable Servicing Agreement
with respect to subclause (a) of the definition of Prepayment Interest Shortfall
with respect to the Mortgage Loans for the related Distribution Date, and not so
paid by the applicable Servicer (such amount, the "Compensating Interest
Payment"). The Master Servicer shall not be entitled to any reimbursement of any
Compensating Interest Payment; provided, however, the aggregate compensating
interest payments made by the Master Servicer shall not exceed the Master
Servicing Compensation.

                                   ARTICLE VII
                      THE MASTER SERVICER AND THE DEPOSITOR

     Section 7.01 Liabilities of the Master Servicer. The Master Servicer shall
be liable in accordance herewith only to the extent of the obligations
specifically imposed upon and undertaken by the Master Servicer, as the case may
be, herein. The Depositor shall be liable in accordance herewith only to the
extent of the obligations specifically imposed upon and undertaken by the
Depositor.

     Section 7.02 Merger or Consolidation of the Master Servicer.

     (a) Each of the Master Servicer and the Depositor will keep in full force
and effect its existence, rights and franchises as a corporation under the laws
of the state of its incorporation, and will 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

                                     -114-

<PAGE>

enforceability of this Agreement, the Certificates or any of the Mortgage Loans
and to perform its duties under this Agreement.

     (b) Any Person into which the Master Servicer or the Depositor may be
merged or consolidated, or any corporation resulting from any merger or
consolidation to which the Master Servicer shall be a party, or any Person
succeeding to the business of the Master Servicer, shall be the successor of the
Master Servicer hereunder, 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.

     Section 7.03 Indemnification from the Master Servicer and the Depositor.

     (a) The Master Servicer agrees to indemnify the Indemnified Persons for,
and to hold them harmless against, any loss, liability or expense (including
reasonable legal fees and disbursements of counsel) incurred on their part that
may be sustained in connection with, arising out of, or relating to, any claim
or legal action (including any pending or threatened claim or legal action)
relating to this Agreement or the Certificates (i) related to the Master
Servicer's failure to perform its duties in compliance with this Agreement
(except as any such loss, liability or expense shall be otherwise reimbursable
pursuant to this Agreement) or (ii) incurred by reason of the Master Servicer's
willful misfeasance, bad faith or gross negligence in the performance of duties
hereunder or by reason of reckless disregard of obligations and duties
hereunder, provided, in each case, that with respect to any such claim or legal
action (or pending or threatened claim or legal action), the Trustee or the
Securities Administrator shall have given the Master Servicer and the Depositor
written notice of such claim or legal action promptly after the Trustee or the
Securities Administrator shall have received knowledge thereof. This indemnity
shall survive the resignation or removal of the Trustee, Master Servicer or the
Securities Administrator and the termination of this Agreement.

     (b) The Depositor will indemnify any Indemnified Person for any loss,
liability or expense of any Indemnified Person not otherwise referred to in
Section (a) above.

     Section 7.04 Limitations on Liability of the Master Servicer and Others.
Subject to the obligation of the Master Servicer to indemnify the Indemnified
Persons pursuant to Section 7.03:

     (a) Neither the Master Servicer nor any of the directors, officers,
employees or agents of the Master Servicer shall be under any liability to the
Indemnified Persons, the Depositor, the Issuing Entity or the Certificateholders
for taking any action or for refraining from taking any action in good faith
pursuant to this Agreement, or for errors in judgment; provided, however, that
this provision shall not protect the Master Servicer or any such Person against
any breach of warranties or representations made herein or any liability which
would otherwise be imposed by reason of such Person's willful misfeasance, bad
faith or gross negligence in the performance of duties or by reason of reckless
disregard of obligations and duties hereunder.

     (b) The Master Servicer and any director, officer, employee or agent of the
Master 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.

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<PAGE>

     (c) The Master Servicer, the Servicers, the Custodian and any director,
officer, employee or agent of the Master Servicer, the Servicers or the
Custodian shall be indemnified by the Issuing Entity and held harmless thereby
against any loss, liability or expense (including reasonable legal fees and
disbursements of counsel) incurred on their part that may be sustained in
connection with, arising out of, or related to, any claim or legal action
(including any pending or threatened claim or legal action) relating to this
Agreement, an Applicable Servicing Agreement or the Certificates (except to the
extent that the Master Servicer or the Custodian, as the case may be, is
indemnified by another party thereunder), other than (i) any such loss,
liability or expense related to the Master Servicer's failure to perform its
duties in compliance with this Agreement (except as any such loss, liability or
expense shall be otherwise reimbursable pursuant to this Agreement), or to the
Custodian's failure to perform its duties under the Custodial Agreement,
respectively, or (ii) any such loss, liability or expense incurred by reason of
the Master Servicer's, the Servicers' or the Custodian's willful misfeasance,
bad faith or gross negligence in the performance of duties hereunder or under
the Custodial Agreement, as applicable, or by reason of reckless disregard of
obligations and duties hereunder or under the Custodial Agreement, as
applicable.

     (d) The Master Servicer shall not be under any obligation to appear in,
prosecute or defend any legal action that is not incidental to its duties under
this Agreement and that in its opinion may involve it in any expense or
liability; provided, however, the Master Servicer may in its discretion,
undertake any such action which it may deem necessary or desirable with respect
to this Agreement and the rights and duties of the parties hereto and the
interests of 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 Issuing Entity, and the Master Servicer
shall be entitled to be reimbursed therefor out of the Master Servicer
Collection Account as provided by Section 4.03. Nothing in this Section 7.04(d)
shall affect the Master Servicer's obligation to supervise, or to take such
actions as are necessary to ensure, the servicing and administration of the
Mortgage Loans pursuant to Section 3.01.

     (e) In taking or recommending any course of action pursuant to this
Agreement, unless specifically required to do so pursuant to this Agreement, the
Master Servicer shall not be required to investigate or make recommendations
concerning potential liabilities which the Issuing Entity might incur as a
result of such course of action by reason of the condition of the Mortgaged
Properties but shall give notice to the Trustee if it has notice of such
potential liabilities.

     (f) The Master Servicer shall not be liable for any acts or omissions of
any Servicer, except as otherwise expressly provided herein.

     Section 7.05 Master Servicer Not to Resign. Except as provided in Section
7.07, the Master Servicer shall not resign from the obligations and duties
hereby imposed on it except upon a determination that any such duties hereunder
are no longer permissible under applicable law and such impermissibility cannot
be cured. Any such determination permitting the resignation of the Master
Servicer shall be evidenced by an Opinion of Independent Counsel to such effect
delivered to the Trustee and the NIMs Insurer, if any. No such resignation by
the Master Servicer shall become effective until MLML or the Trustee or a
successor to the Master Servicer reasonably satisfactory to the Trustee and the
NIMs Insurer shall have assumed the

                                     -116-

<PAGE>

responsibilities and obligations of the Master Servicer in accordance with
Section 8.02 hereof. The Trustee shall notify the Rating Agencies of the
resignation of the Master Servicer. If the Master Servicer and the Securities
Administrator are the same entity, then at any time the Master Servicer is
terminated as master servicer, the Securities Administrator shall likewise be
removed as securities administrator.

     Section 7.06 Successor Master Servicer. In connection with the appointment
of any successor Master Servicer or the assumption of the duties of the Master
Servicer, MLML or the Trustee may make such arrangements for the compensation of
such successor master servicer out of payments on the Mortgage Loans as MLML or
the Trustee and such successor master servicer shall agree. If the successor
master servicer does not agree that such market value is a fair price, such
successor master servicer shall obtain two quotations of market value from third
parties actively engaged in the servicing of single-family mortgage loans.

     Notwithstanding anything herein to the contrary, in no event shall the
Trustee be liable for any Servicing Fee or Master Servicing Compensation or for
any differential in the amount of the Servicing Fee or Master Servicing
Compensation paid hereunder and the amount necessary to induce any successor
servicer or successor master servicer to act as successor servicer or successor
master servicer, as applicable, under this Agreement and the transactions set
forth or provided for herein.

     Section 7.07 Sale and Assignment of Master Servicing. The Master Servicer
may sell and assign its rights and delegate its duties and obligations in its
entirety as Master Servicer under this Agreement; provided, however, that: (i)
the purchaser or transferee accepting such assignment and delegation (a) shall
be a Person which shall be qualified to service mortgage loans for Fannie Mae or
Freddie Mac; (b) shall have a net worth of not less than $10,000,000 (unless
otherwise approved by each Rating Agency pursuant to clause (ii) below); (c)
shall be reasonably satisfactory to the Trustee (as evidenced in a writing
signed by the Trustee); and (d) shall execute and deliver to the Trustee an
agreement, in form and substance reasonably satisfactory to the Trustee, which
contains an assumption by such Person of the due and punctual performance and
observance of each covenant and condition to be performed or observed by it as
master servicer under this Agreement, any custodial agreement from and after the
effective date of such agreement; (ii) each Rating Agency shall be given prior
written notice of the identity of the proposed successor to the Master Servicer
and each Rating Agency's rating of the Certificates in effect immediately prior
to such assignment, sale and delegation will not be downgraded, qualified or
withdrawn as a result of such assignment, sale and delegation, as evidenced by a
letter to such effect delivered to the Master Servicer and the Trustee; and
(iii) the Master Servicer assigning and selling the master servicing shall
deliver to the Trustee an Officer's Certificate and an Opinion of Independent
Counsel, each stating that all conditions precedent to such action under this
Agreement have been completed and such action is permitted by and complies with
the terms of this Agreement. No such assignment or delegation shall affect any
liability of the Master Servicer arising prior to the effective date thereof.

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<PAGE>

                                  ARTICLE VIII
                                     DEFAULT

     Section 8.01 Events of Default. "Event of Default," wherever used herein,
means any one of the following events (whatever the reason for such Event of
Default and whether it shall be voluntary or involuntary or be effected by
operation of law or pursuant to any judgment, decree or order of any court or
any order, rule or regulation of any administrative or governmental body) and
only with respect to the defaulting Master Servicer:

          (i) The Master Servicer fails to cause to be deposited in the
     Distribution Account any amount so required to be deposited pursuant to
     this Agreement, and such failure continues unremedied for a period of three
     Business Days after the date upon which written notice of such failure,
     requiring the same to be remedied, shall have been given to the Master
     Servicer; or

          (ii) The Master Servicer fails to observe or perform in any material
     respect any other material covenants and agreements set forth in this
     Agreement to be performed by it, which covenants and agreements materially
     affect the rights of Certificateholders, and such failure continues
     unremedied for a period of 60 days after the date on which written notice
     of such failure, properly requiring the same to be remedied, shall have
     been given to the Master Servicer by the Trustee or to the Master Servicer
     and the Trustee by the Holders of Certificates evidencing Percentage
     Interests aggregating not less than 25% of the Trust Fund or by the NIMs
     Insurer; or

          (iii) There is entered against the Master Servicer a decree or order
     by a court or agency or supervisory authority having jurisdiction in the
     premises for the appointment of a conservator, receiver or liquidator in
     any insolvency, readjustment of debt, marshaling of assets and liabilities
     or similar proceedings, or for the winding up or liquidation of its
     affairs, and the continuance of any such decree or order is unstayed and in
     effect for a period of 60 consecutive days, or an involuntary case is
     commenced against the Master Servicer under any applicable insolvency or
     reorganization statute and the petition is not dismissed within 60 days
     after the commencement of the case; or

          (iv) The Master Servicer consents to the appointment of a conservator
     or receiver or liquidator in any insolvency, readjustment of debt,
     marshaling of assets and liabilities or similar proceedings of or relating
     to the Master Servicer or substantially all of its property; or the Master
     Servicer admits in writing its inability to pay its debts generally as they
     become due, files a petition to take advantage of any applicable insolvency
     or reorganization statute, makes an assignment for the benefit of its
     creditors, or voluntarily suspends payment of its obligations; or

          (v) The Master Servicer assigns or delegates its duties or rights
     under this Agreement in contravention of the provisions permitting such
     assignment or delegation under Sections 7.05 or 7.07.

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<PAGE>

          (vi) Any failure by the Master Servicer to deliver any Annual
     Statement of Compliance, Assessment of Compliance or Accountant's
     Attestation when and as required under Section 3.16 or Section 3.17.

In each and every such case, so long as such Event of Default with respect to
the Master Servicer shall not have been remedied, either the Trustee (with the
written consent of the NIMs Insurer, except after a NIMs Insurer Default) or the
Holders of Certificates evidencing Percentage Interests aggregating not less
than 51% of the Certificate Principal Balance of the Certificates (with the
written consent of the NIMs Insurer, except after a NIMs Insurer Default), by
notice in writing to the Master Servicer (and to the Trustee if given by such
Certificateholders), with a copy to the Rating Agencies, and with the consent of
the Sponsor, may terminate all of the rights and obligations (but not the
liabilities) of the Master Servicer under this Agreement and in and to the
Mortgage Loans and/or the REO Property serviced by the Master Servicer and the
proceeds thereof. Upon the receipt by the Master Servicer of the written notice,
all authority and power of the Master Servicer under this Agreement, whether
with respect to the Certificates, the Mortgage Loans, REO Property or under any
other related agreements (but only to the extent that such other agreements
relate to the Mortgage Loans or related REO Property) shall, subject to Section
8.02, automatically and without further action pass to and be vested in the
Trustee pursuant to this Section 8.01; and, without limitation, the Trustee is
hereby authorized and empowered to execute and deliver, on behalf of the Master
Servicer as attorney-in-fact or otherwise, any and all 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. The Master Servicer agrees to cooperate with
the Trustee in effecting the termination of the Master Servicer's rights and
obligations hereunder, including, without limitation, the transfer to the
Trustee of (i) the property and amounts which are then or should be part of the
Issuing Entity or which thereafter become part of the Issuing Entity; and (ii)
originals or copies of all documents of the Master Servicer reasonably requested
by the Trustee to enable it to assume the Master Servicer's duties thereunder.
In addition to any other amounts which are then, or, notwithstanding the
termination of its activities under this Agreement, may become payable to the
Master Servicer under this Agreement, the Master Servicer shall be entitled to
receive, out of any amount received on account of a Mortgage Loan or related REO
Property, that portion of such payments which it would have received as
reimbursement under this Agreement if notice of termination had not been given.
The termination of the rights and obligations of the Master Servicer shall not
affect any obligations incurred by the Master Servicer prior to such
termination.

     Section 8.02 Trustee to Act; Appointment of Successor.

     (a) Upon the receipt by the Master Servicer of a notice of termination
pursuant to Section 8.01 or an Opinion of Independent Counsel pursuant to
Section 7.05 to the effect that the Master Servicer is legally unable to act or
to delegate its duties to a Person which is legally able to act, the Trustee
shall automatically become the successor in all respects to the Master Servicer
in its capacity under this Agreement and the transactions set forth or provided
for herein and shall thereafter be subject to all the responsibilities, duties,
liabilities and limitations on liabilities relating thereto placed on the Master
Servicer by the terms and provisions hereof; provided, however, that MLML shall
have the right to either (a) immediately assume the duties of the

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<PAGE>

Master Servicer or (b) select a successor master servicer; provided further,
however, that the Trustee shall have no obligation whatsoever with respect to
any liability (other than advances deemed recoverable and not previously made)
incurred by the Master Servicer at or prior to the time of termination. As
compensation therefor, the Trustee shall be entitled to all funds relating to
the Mortgage Loans which the Master Servicer would have been entitled to retain
if the Master Servicer had continued to act hereunder, except for those amounts
due the Master Servicer as reimbursement permitted under this Agreement for
advances previously made or expenses previously incurred. Notwithstanding the
above, or anything herein to the contrary, the Trustee, if it becomes Master
Servicer, shall have no responsibility or obligation (i) to repurchase or
substitute any Mortgage Loan, (ii) for any representation or warranty of the
Master Servicer hereunder, and (iii) for any act or omission of either a
predecessor or successor Master Servicer other than the Trustee. The Trustee may
conduct any activity required of it as Master Servicer hereunder through an
Affiliate or through an agent. Neither the Trustee (as successor Master
Servicer) nor any other successor Master Servicer shall be deemed to be in
default hereunder due to any act or omission of a predecessor Master Servicer,
including but not limited to failure to timely deliver to the Trustee
distribution instructions, any funds required to be deposited to the Trust Fund,
or any breach of its duty to cooperate with a transfer of master servicing.
Neither the Trustee nor any other successor Master Servicer shall be deemed to
be in default hereunder by reason 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 solely by the failure of the Master Servicer to deliver or
provide, or any delay in delivering or providing, any cash, information,
documents or records required to be provided to it by the Master Servicer.
Notwithstanding the above, the Trustee may, if it shall be unwilling so to act,
or shall, if it is legally unable so to act, appoint or petition a court of
competent jurisdiction to appoint, any established housing and home finance
institution which is a Fannie Mae- or Freddie Mac-approved servicer, and with
respect to a successor to the Master Servicer only, having a net worth of not
less than $10,000,000 and meeting such other standards for a successor Master
Servicer as are set forth in this Agreement, as the successor to the Master
Servicer hereunder in the assumption of all or any part of the responsibilities,
duties or liabilities of the Master Servicer hereunder. Pending appointment of a
successor to the Master Servicer hereunder, the Trustee shall act in such
capacity as hereinabove provided. In connection with such appointment and
assumption, the Trustee may make such arrangements for the compensation of such
successor out of payments on the Mortgage Loans as it and such successor shall
agree; provided, however, in the event that the provisions of Section 7.06 shall
apply, no such compensation shall be in excess of that permitted the Trustee
under this Section 8.02(a), and that such successor shall undertake and assume
the obligations of the Trustee to pay compensation to any third Person acting as
an agent or independent contractor in the performance of master servicing
responsibilities hereunder. The Trustee and such successor shall take such
action, consistent with this Agreement, as shall be necessary to effectuate any
such succession. No appointment of a successor to the Master Servicer hereunder
shall be effective until the NIMs Insurer shall have consented thereto and prior
written consent of the NIMs Insurer is obtained (which consent shall not be
unreasonably withheld or delayed).

     (b) If the Trustee shall succeed to any duties of the Master Servicer
respecting the Mortgage Loans as provided herein, it shall do so in a separate
capacity and not in its capacity as Trustee and, accordingly, the provisions of
Article IX (with the exception of the last paragraph of Section 9.01(d)) shall
be inapplicable to the Trustee in its duties as the successor to the Master

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<PAGE>

Servicer in the servicing of the Mortgage Loans (although such provisions shall
continue to apply to the Trustee in its capacity as Trustee); the provisions of
Article VII, however, shall apply to it in its capacity as successor master
servicer.

     Section 8.03 Notification to Certificateholders. Upon any termination or
appointment of a successor to the Master Servicer, the Trustee shall give prompt
written notice thereof to Certificateholders at their respective addresses
appearing in the Certificate Register, the NIMs Insurer, if any, and to the
Rating Agencies.

     Section 8.04 Waiver of Defaults. The Trustee shall transmit by mail to all
Certificateholders and the NIMs Insurer, within 60 days after the occurrence of
any Event of Default known to the Trustee, unless such Event of Default shall
have been cured, notice of each such Event of Default hereunder known to the
Trustee. The Holders of Certificates evidencing Percentage Interests aggregating
not less than 51% of the Certificate Principal Balance of the Certificates may,
on behalf of all Certificateholders, waive any default by the Master Servicer in
the performance of its obligations hereunder and the consequences thereof,
except a default in the making of or the causing to be made any required
distribution on the Certificates. Upon any such waiver of a past default, such
default shall be deemed to cease to exist, and any Event of Default arising
therefrom shall be deemed to have been timely remedied for every purpose of this
Agreement. No such waiver shall extend to any subsequent or other default or
impair any right consequent thereon except to the extent expressly so waived.
The Trustee shall give notice of any such waiver to the Rating Agencies.

     Section 8.05 List of Certificateholders. Upon reasonable, prior written
request of three or more Certificateholders of record, for purposes of
communicating with other Certificateholders with respect to their rights under
this Agreement, the Securities Administrator will afford such Certificateholders
access during business hours to the most recent list of Certificateholders held
by the Securities Administrator.

                                   ARTICLE IX
                           CONCERNING THE TRUSTEE AND
                          THE SECURITIES ADMINISTRATOR

     Section 9.01 Duties of Trustee.

     (a) The Trustee, prior to the occurrence of an Event of Default and after
the curing or waiver of all Events of Default which may have occurred, and the
Securities Administrator each undertake to perform such duties and only such
duties as are specifically set forth in this Agreement as duties of the Trustee
and the Securities Administrator, respectively. If an Event of Default has
occurred and has not been cured or waived, the Trustee shall exercise such of
the rights and powers vested in it by this Agreement, and subject to Section
8.02(b) use the same degree of care and skill in their exercise, as a prudent
person would exercise under the circumstances in the conduct of his own affairs.

     (b) Upon receipt of all resolutions, certificates, statements, opinions,
reports, documents, orders or other instruments which are specifically required
to be furnished to the

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<PAGE>

Trustee and the Securities Administrator pursuant to any provision of this
Agreement, the Trustee and the Securities Administrator, respectively, shall
examine them to determine whether they are in the form required by this
Agreement; provided, however, that neither the Trustee nor the Securities
Administrator shall be responsible for the accuracy or content of any
resolution, certificate, statement, opinion, report, document, order or other
instrument furnished by the Master Servicer; provided, further, that neither the
Trustee nor the Securities Administrator shall be responsible for the accuracy
or verification of any calculation provided to it pursuant to this Agreement. If
any such instrument is found not to conform to the requirements of this
Agreement in a material manner, the Trustee shall take such action as it deems
appropriate to have the instrument corrected and if the instrument is not
corrected to its satisfaction, the Trustee will provide notice thereof to the
NIMs Insurer and the Certificateholders and take such further action as directed
by the NIMs Insurer and the Certificateholders.

     (c) On each Distribution Date, the Securities Administrator shall make
monthly distributions and the final distribution to the Certificateholders from
funds in the Distribution Account as provided in Sections 6.01 and 10.02 herein
based solely on the report of the Master Servicer or the Servicers.

     (d) No provision of this Agreement shall be construed to relieve the
Trustee or the Securities Administrator from liability for its own negligent
action, its own negligent failure to act or its own willful misconduct;
provided, however, that:

          (i) Prior to the occurrence of an Event of Default, and after the
     curing or waiver of all such Events of Default which may have occurred, the
     duties and obligations of the Trustee and the Securities Administrator
     shall be determined solely by the express provisions of this Agreement,
     neither the Trustee nor the Securities Administrator shall be liable except
     for the performance of their respective duties and obligations as are
     specifically set forth in this Agreement, no implied covenants or
     obligations shall be read into this Agreement against the Trustee or the
     Securities Administrator and, in the absence of bad faith on the part of
     the Trustee or the Securities Administrator, respectively, the Trustee or
     the Securities Administrator, respectively, 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 or the
     Securities Administrator, respectively, and conforming to the requirements
     of this Agreement;

          (ii) Neither the Trustee nor the Securities Administrator shall be
     liable in its individual capacity for an error of judgment made in good
     faith by a Responsible Officer or Responsible Officers of the Trustee or an
     officer of the Securities Administrator, respectively, unless it shall be
     proved that the Trustee or the Securities Administrator, respectively, was
     negligent in ascertaining the pertinent facts;

          (iii) Neither the Trustee nor the Securities Administrator shall be
     liable with respect to any action taken, suffered or omitted to be taken by
     it in good faith in accordance with the directions of the NIMs Insurer or
     the Holders of Certificates evidencing Percentage Interests aggregating not
     less than 25% of the Certificate Principal Balance of the Certificates, if
     such action or non-action relates to the time, method and place of
     conducting any proceeding for any remedy available to the Trustee or the

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<PAGE>

     Securities Administrator, respectively, or exercising any trust or other
     power conferred upon the Trustee or the Securities Administrator,
     respectively, under this Agreement;

          (iv) The Trustee shall not be required to take notice or be deemed to
     have notice or knowledge of any default or Event of Default unless a
     Responsible Officer of the Trustee's Corporate Trust Office shall have
     actual knowledge thereof. In the absence of such notice, the Trustee may
     conclusively assume there is no such default or Event of Default;

          (v) The Trustee shall not in any way be liable by reason of any
     insufficiency in any Account held by or in the name of Trustee unless it is
     determined by a court of competent jurisdiction that the Trustee's gross
     negligence or willful misconduct was the primary cause of such
     insufficiency (except to the extent that the Trustee is obligor and has
     defaulted thereon);

          (vi) Anything in this Agreement to the contrary notwithstanding, in no
     event shall the Trustee or the Securities Administrator be liable for
     special, indirect or consequential loss or damage of any kind whatsoever
     (including but not limited to lost profits), even if the Trustee or the
     Securities Administrator, respectively, has been advised of the likelihood
     of such loss or damage and regardless of the form of action; and

          (vii) None of the Securities Administrator, the Depositor, the Master
     Servicer or the Trustee shall be responsible for the acts or omissions of
     the other, it being understood that this Agreement shall not be construed
     to render them partners, joint venturers or agents of one another.

     Neither the Trustee (regardless of the capacity in which it is acting) nor
the Securities Administrator shall be required to expend or risk its own funds
or otherwise incur financial liability in the performance of any of its duties
hereunder, or in the exercise of any of its rights or powers, if there is
reasonable ground for believing that the repayment of such funds or adequate
indemnity against such risk or liability is not reasonably assured to it, and
none of the provisions contained in this Agreement shall in any event require
the Trustee or the Securities Administrator to perform, or be responsible for
the manner of performance of, any of the obligations of the Master Servicer
hereunder or under the Applicable Servicing Agreements, except during such time,
if any, as the Trustee shall be the successor to, and be vested with the rights,
duties, powers and privileges of, the Master Servicer in accordance with the
terms of this Agreement.

     (e) All funds received by the Master Servicer and the Securities
Administrator and required to be deposited in the Master Servicer Collection
Account or Distribution Account pursuant to this Agreement will be promptly so
deposited by the Master Servicer and the Securities Administrator.

     (f) The Issuing Entity hereby authorizes and directs the Securities
Administrator to enter into the Corridor Contract on behalf of the Issuing
Entity and to perform the duties and obligations of the Issuing Entity under the
Corridor Contract and any other agreement or instrument related thereto, in each
case in such form as the Depositor shall direct or shall

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approve in writing, the execution and delivery of any such agreement by the
Depositor to be conclusive evidence of its approval thereof.

     (g) Except for those actions that the Trustee or the Securities
Administrator is required to take hereunder, neither the Trustee nor the
Securities Administrator shall have any obligation or liability to take any
action or to refrain from taking any action hereunder in the absence of written
direction as provided hereunder.

     Section 9.02 Certain Matters Affecting the Trustee and the Securities
Administrator. Except as otherwise provided in Section 9.01:

          (i) The Trustee and the Securities Administrator may rely and shall be
     protected in acting or refraining from acting in reliance on any
     resolution, certificate of a Depositor, Master Servicer or Servicer,
     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;

          (ii) The Trustee and the Securities Administrator may consult with
     counsel and any advice of such counsel or any Opinion of Counsel shall be
     full and complete authorization and protection with respect to any action
     taken or suffered or omitted by it hereunder in good faith and in
     accordance with such advice or Opinion of Counsel;

          (iii) Neither the Trustee nor the Securities Administrator shall be
     under any obligation to exercise any of the trusts or powers vested in it
     by this Agreement, other than its obligation to give notices pursuant to
     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 or the NIMs Insurer pursuant to the provisions of this
     Agreement, unless such Certificateholders or NIMs Insurer shall have
     offered to the Trustee reasonable security or indemnity against the costs,
     expenses and liabilities which may be incurred therein or thereby. Nothing
     contained herein shall, however, relieve the Trustee of the obligation,
     upon the occurrence of an Event of Default of which a Responsible Officer
     of the Trustee's Corporate Trust Office has actual knowledge (which has not
     been cured or waived), subject to Section 8.02(b), to exercise such of the
     rights and powers vested in it by this Agreement, and to use the same
     degree of care and skill in their exercise, as a prudent person would
     exercise under the circumstances in the conduct of his own affairs;

          (iv) Prior to the occurrence of an Event of Default hereunder and
     after the curing or waiver of all Events of Default which may have
     occurred, neither the Trustee nor the Securities Administrator shall be
     liable in its individual capacity 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;

          (v) Neither the Trustee nor the Securities Administrator shall 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

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<PAGE>

     other paper or document, unless requested in writing to do so by Holders of
     Certificates evidencing Percentage Interests aggregating not less than 25%
     of the Certificate Principal Balance of the Certificates or the NIMs
     Insurer and provided that the payment within a reasonable time to the
     Trustee or the Securities Administrator, as applicable, of the costs,
     expenses or liabilities likely to be incurred by it in the making of such
     investigation is, in the opinion of the Trustee or the Securities
     Administrator, as applicable, reasonably assured to the Trustee or the
     Securities Administrator, as applicable, by the security afforded to it by
     the terms of this Agreement. The Trustee or the Securities Administrator
     may require reasonable indemnity against such expense or liability as a
     condition to taking any such action. The reasonable expense of every such
     examination shall be paid by the Certificateholders or the NIMs Insurer
     requesting the investigation;

          (vi) The Trustee and the Securities Administrator may execute any of
     the trusts or powers hereunder or perform any duties hereunder either
     directly or through Affiliates, agents or attorneys; provided, however,
     that the Trustee may not appoint any agent to perform its custodial
     functions with respect to the Mortgage Files or paying agent functions
     under this Agreement without the express written consent of the Securities
     Administrator, which consent will not be unreasonably withheld. Neither the
     Trustee nor the Securities Administrator shall be liable or responsible for
     the misconduct or negligence of any of the Trustee's or the Securities
     Administrator's agents or attorneys or a custodian or paying agent
     appointed hereunder by the Trustee or the Securities Administrator with due
     care and, when required, with the consent of the Securities Administrator;

          (vii) Should the Trustee or the Securities Administrator deem the
     nature of any action required on its part, other than a payment or transfer
     under Section 4.01(b) or Section 4.02, to be unclear, the Trustee or the
     Securities Administrator, respectively, may require prior to such action
     that it be provided by the Depositor with reasonable further instructions;

          (viii) The right of the Trustee or the Securities Administrator to
     perform any discretionary act enumerated in this Agreement shall not be
     construed as a duty, and neither the Trustee nor the Securities
     Administrator shall be accountable for other than its negligence or willful
     misconduct in the performance of any such act;

          (ix) Neither the Trustee nor the Securities Administrator shall be
     required to give any bond or surety with respect to the execution of the
     trust created hereby or the powers granted hereunder, except as provided in
     Section 9.07; and

          (x) Neither the Trustee nor the Securities Administrator shall have
     any duty to conduct any affirmative investigation (including, but not
     limited to, reviewing any reports delivered to the Trustee in connection
     with the review of the Mortgage Files) as to the occurrence of any
     condition requiring the repurchase of any Mortgage Loan by the Sponsor
     pursuant to this Agreement or the Mortgage Loan Purchase Agreement, as
     applicable, or the eligibility of any Mortgage Loan for purposes of this
     Agreement.

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<PAGE>

          (xi) Any permissive right of the Trustee hereunder shall not be
     construed as a duty.

     Section 9.03 Trustee and Securities Administrator Not Liable for
Certificates or Mortgage Loans. The recitals contained herein and in the
Certificates (other than the signature and countersignature of the Securities
Administrator on the Certificates) shall be taken as the statements of the
Depositor, and neither the Trustee nor the Securities Administrator shall have
any responsibility for their correctness. Neither the Trustee nor the Securities
Administrator makes any representation as to the validity or sufficiency of the
Certificates (other than, as to the Securities Administrator, the signature and
countersignature of the Securities Administrator on the Certificates) or of any
Mortgage Loan except as expressly provided in Sections 2.02 and 2.05 hereof;
provided, however, that the foregoing shall not relieve the Trustee or the
Custodian of the obligation to review the Mortgage Files pursuant to Sections
2.02 and 2.04. The Securities Administrator's signature and countersignature (or
countersignature of its agent) on the Certificates shall be solely in its
capacity as Securities Administrator of the Trust Fund and shall not constitute
the Certificates an obligation of the Securities Administrator in any other
capacity. Neither the Trustee or the Securities Administrator shall be
accountable for the use or application by the Depositor of any of the
Certificates or of the proceeds of such Certificates, or for the use or
application of any funds paid to the Depositor with respect to the Mortgage
Loans. Subject to the provisions of Section 2.05, neither the Trustee nor the
Securities Administrator shall be responsible for the legality or validity of
this Agreement or any document or instrument relating to this Agreement, the
validity of the execution of this Agreement or of any supplement hereto or
instrument of further assurance, or the validity, priority, perfection or
sufficiency of the security for the Certificates issued hereunder or intended to
be issued hereunder or of any guaranty of a NIMs Insurer or related document
other than, with respect to the Securities Administrator, the execution and
authentication of the Certificates. Neither the Trustee nor the Securities
Administrator shall at any time have any responsibility or liability for or with
respect to the legality, validity and enforceability of any Mortgage or any
Mortgage Loan, or the perfection and priority of any Mortgage or the maintenance
of any such perfection and priority, or for or with respect to the sufficiency
of the Trust Fund or its ability to generate the payments to be distributed to
Certificateholders, under this Agreement. Neither the Trustee nor the Securities
Administrator shall have any responsibility for filing 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 or to record this Agreement.

     Section 9.04 Trustee and Securities Administrator May Own Certificates. The
Trustee and the Securities Administrator in its individual capacity or in any
capacity other than as Trustee hereunder may become the owner or pledgee of any
Certificates with the same rights it would have if it were not Trustee or the
Securities Administrator, as applicable, and may otherwise deal with the parties
hereto.

     Section 9.05 Trustee's and Securities Administrator's Fees and Expenses.
The fees and expenses of the Trustee and the Securities Administrator shall be
paid by the Master Servicer in accordance with a side letter agreement. In
addition, the Trustee and the Securities Administrator will be entitled to
recover from the Master Servicer Collection Account pursuant to Section 4.03(b)
all reasonable out-of-pocket expenses, disbursements and advances and the
expenses of the Trustee and the Securities Administrator, respectively, in
connection with any

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<PAGE>

Event of Default, any breach of this Agreement or any claim or legal action
(including any pending or threatened claim or legal action) incurred or made by
the Trustee or the Securities Administrator, respectively, in the administration
of the trusts hereunder (including the reasonable compensation, expenses and
disbursements of its counsel) except any such expense, disbursement or advance
as may arise from its negligence or intentional misconduct or which is the
responsibility of the Certificateholders or the Trust Fund hereunder. If funds
in the Master Servicer Collection Account are insufficient therefor, the Trustee
and the Securities Administrator shall recover such expenses from the Depositor.
Such compensation and reimbursement obligation shall not be limited by any
provision of law in regard to the compensation of a trustee of an express trust.

     Section 9.06 Eligibility Requirements for Trustee and Securities
Administrator.

     (a) The Trustee and any successor Trustee and the Securities Administrator
and any successor Securities Administrator shall during the entire duration of
this Agreement be a state bank or trust company or a national banking
association organized and doing business under the laws of such state or the
United States of America, authorized under such laws to exercise corporate trust
powers, having a combined capital and surplus and undivided profits of at least
$40,000,000 or, in the case of a successor Trustee, $50,000,000, subject to
supervision or examination by federal or state authority and, in the case of the
Trustee, rated "BBB" or higher by S&P and "Aaa1" or higher by Moody's with
respect to their long-term rating and rated "BBB" or higher by S&P and "Baa1" or
higher by Moody's with respect to any outstanding long-term unsecured
unsubordinated debt, and, in the case of a successor Trustee or successor
Securities Administrator other than pursuant to Section 9.10, rated in one of
the two highest long-term debt categories of, or otherwise acceptable to, each
of the Rating Agencies and reasonably acceptable to the NIMs Insurer. If the
Trustee 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 9.06 the combined capital and surplus of such
corporation shall be deemed to be its total equity capital (combined capital and
surplus) as set forth in its most recent report of condition so published. In
case at any time the Trustee or the Securities Administrator shall cease to be
eligible in accordance with the provisions of this Section 9.06, the Trustee or
the Securities Administrator shall resign immediately in the manner and with the
effect specified in Section 9.08.

     (b) In addition, the Securities Administrator (i) may not be an Originator,
Master Servicer, Servicer, the Depositor or an affiliate of the Depositor unless
the Securities Administrator is in an institutional trust department of the
relevant entity, (ii) must be authorized to exercise corporate trust powers
under the laws of its jurisdiction of organization, and (iii) must be rated at
least "A" by S&P or "A" Moody's. If no successor Securities Administrator shall
have been appointed and shall have accepted appointment within 60 days after the
Securities Administrator ceases to be the Securities Administrator pursuant to
Section 9.08, then the Trustee shall either (i) perform the duties of the
Securities Administrator pursuant to this Agreement until such time as a new
Securities Administrator is appointed or (ii) petition a court of competent
jurisdiction to appoint a successor securities administrator. The Trustee shall
notify the Rating Agencies of any change of Securities Administrator.

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<PAGE>

     Section 9.07 Insurance. The Securities Administrator, at its own expense,
shall at all times maintain and keep in full force and effect: (i) fidelity
insurance, (ii) theft of documents insurance and (iii) forgery insurance (which
may be collectively satisfied by a "Financial Institution Bond" and/or a
"Bankers' Blanket Bond"). All such insurance shall be in amounts, with standard
coverage and subject to deductibles, as are customary for insurance typically
maintained by banks or their affiliates which act as custodians for
investor-owned mortgage pools. A certificate of an officer of the Securities
Administrator as to the Securities Administrator's compliance with this Section
9.07 shall be furnished to any Certificateholder upon reasonable written
request.

     Section 9.08 Resignation and Removal of the Trustee and Securities
Administrator.

     (a) The Trustee and the Securities Administrator may at any time resign and
be discharged from the trust hereby created by giving written notice thereof to
the Depositor, the NIMs Insurer and the Master Servicer, with a copy to the
Rating Agencies. Upon receiving such notice of resignation, the Depositor shall
promptly appoint a successor Trustee or successor Securities Administrator, as
applicable, by written instrument, in triplicate, one copy of which instrument
shall be delivered to each of the resigning Trustee or Securities Administrator,
as applicable, the successor Trustee or Securities Administrator, as applicable.
If no successor Trustee or Securities Administrator shall have been so appointed
and have accepted appointment within 30 days after the giving of such notice of
resignation, the resigning Trustee or Securities Administrator may petition any
court of competent jurisdiction for the appointment of a successor Trustee or
Securities Administrator. If the Securities Administrator and the Master
Servicer are the same entity, then at any time the Securities Administrator
resigns or is removed as Securities Administrator, the Master Servicer shall
likewise be terminated as Master Servicer.

     (b) If at any time the Trustee or the Securities Administrator shall cease
to be eligible in accordance with the provisions of Section 9.06 and shall fail
to resign after written request therefor by the Depositor or if at any time the
Trustee or the Securities Administrator shall become incapable of acting, or
shall be adjudged a bankrupt or insolvent, or a receiver of the Trustee or the
Securities Administrator, as applicable, or of its property shall be appointed,
or any public officer shall take charge or control of the Trustee or the
Securities Administrator, as applicable, or of its property or affairs for the
purpose of rehabilitation, conservation or liquidation, then the Depositor shall
promptly remove the Trustee, or shall be entitled to remove the Securities
Administrator, as applicable, and appoint a successor Trustee or Securities
Administrator, as applicable, by written instrument, in triplicate, one copy of
which instrument shall be delivered to each of the Trustee or Securities
Administrator, as applicable, so removed, the successor Trustee or Securities
Administrator, as applicable.

     (c) The Holders of Certificates evidencing Percentage Interests aggregating
not less than 51% of the Trust Fund, with the consent of the NIMs Insurer, or
the NIMs Insurer, may at any time remove the Trustee or the Securities
Administrator and appoint a successor Trustee or Securities Administrator by
written instrument or instruments, in quadruplicate, signed by such Holders or
their attorneys-in-fact duly authorized (or the NIMs Insurer), one complete set
of which instruments shall be delivered to the Depositor, the Trustee, the
Securities Administrator (if the Trustee is removed), the Trustee (if the
Securities Administrator is removed), and the Trustee or Securities
Administrator so removed and the successor so appointed.

                                     -128-
<PAGE>

     (d) No resignation or removal of the Trustee or the Securities
Administrator and appointment of a successor Trustee or Securities Administrator
pursuant to any of the provisions of this Section 9.08 shall become effective
except upon appointment of and acceptance of such appointment by the successor
Trustee or Securities Administrator acceptable to the NIMs Insurer as provided
in Section 9.09.

     Section 9.09 Successor Trustee and Successor Securities Administrator.

     (a) Any successor Trustee or Securities Administrator appointed as provided
in Section 9.08 shall execute, acknowledge and deliver to the Depositor, the
Master Servicer, the NIMs Insurer and its predecessor Trustee or Securities
Administrator an instrument accepting such appointment hereunder. The
resignation or removal of the predecessor Trustee or Securities Administrator
shall then become effective and such successor Trustee or Securities
Administrator, without any further act, deed or conveyance, shall become fully
vested with all the rights, powers, duties and obligations of its predecessor
hereunder, with like effect as if originally named as Trustee or Securities
Administrator herein. The predecessor Trustee or Securities Administrator shall
after payment of its outstanding fees and expenses promptly deliver to the
successor Trustee or Securities Administrator, as applicable, all assets and
records of the Trust held by it hereunder, and the Depositor and the predecessor
Trustee or Securities Administrator, as applicable, 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 or
Securities Administrator, as applicable, all such rights, powers, duties and
obligations.

     (b) No successor Trustee or Securities Administrator shall accept
appointment as provided in this Section 9.09 unless at the time of such
acceptance such successor Trustee or Securities Administrator shall be eligible
under the provisions of Section 9.06.

     (c) Upon acceptance of appointment by a successor Trustee or Securities
Administrator as provided in this Section 9.09, the successor Trustee or
Securities Administrator shall mail notice of the succession of such Trustee or
Securities Administrator hereunder to all Certificateholders at their addresses
as shown in the Certificate Register and to the Rating Agencies. The Depositor
shall pay the cost of any mailing by the successor Trustee or Securities
Administrator.

     Section 9.10 Merger or Consolidation of Trustee or Securities
Administrator. Any state bank or trust company or national banking association
into which the Trustee or the Securities Administrator may be merged or
converted or with which it may be consolidated or any state bank or trust
company or national banking association resulting from any merger, conversion or
consolidation to which the Trustee or the Securities Administrator,
respectively, shall be a party, or any state bank or trust company or national
banking association succeeding to all or substantially all of the corporate
trust business of the Trustee or the Securities Administrator, respectively,
shall be the successor of the Trustee or the Securities Administrator,
respectively, hereunder, provided such state bank or trust company or national
banking association shall be eligible under the provisions of Section 9.06. Such
succession shall be valid 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.

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     Section 9.11 Appointment of Co-Trustee or Separate Trustee.

     (a) Notwithstanding any other provisions hereof, at any time, for the
purpose of meeting any legal requirements of any jurisdiction in which any part
of the Trust or property constituting the same may at the time be located, the
Depositor 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, the NIMs Insurer (which approval shall not be unreasonably withheld or
delayed) and the Depositor 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, and to vest in such Person or Persons, in such capacity, such title to
the Trust, or any part thereof, and, subject to the other provisions of this
Section 9.11, such powers, duties, obligations, rights and trusts as the
Depositor, the NIMs Insurer and the Trustee may consider necessary or desirable.

     (b) If the Depositor or the NIMs Insurer shall not have joined in such
appointment within 15 days after the receipt by it of a written request so to
do, the Trustee shall have the power to make such appointment without the
Depositor or the NIMs Insurer.

     (c) No co-Master Servicer or separate trustee hereunder shall be required
to meet the terms of eligibility as a successor trustee under Section 9.06
hereunder and no notice to Certificateholders of the appointment of
co-trustee(s) or separate trustee(s) shall be required under Section 9.08
hereof.

     (d) In the case of any appointment of a co-trustee or separate trustee
pursuant to this Section 9.11, all rights, powers, duties and obligations
conferred or imposed upon the Trustee and required to be conferred on such
co-trustee shall be conferred or imposed upon and exercised or performed by the
Trustee and such separate trustee or co-trustee jointly, 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 Master
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 Trust or any portion thereof in any such
jurisdiction) shall be exercised and performed by such separate trustee or
co-trustee at the direction of the Trustee.

     (e) Any notice, request or other writing given to the Trustee shall be
deemed to have been given to each of the then separate trustees and co-trustees,
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 IX. 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.

     (f) To the extent not prohibited by law, any separate trustee or co-trustee
may, at any time, request the Trustee, its agent or attorney-in-fact, with full
power and authority, to do any lawful act under or with respect to 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

                                      -130-

<PAGE>

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.

     (g) No Trustee under this Agreement shall be personally liable by reason of
any act or omission of another Trustee under this Agreement. The Depositor and
the Trustee acting jointly, with the consent of the NIMs Insurer, may at any
time accept the resignation of or remove any separate trustee or co-trustee.

     Section 9.12 Federal Information Returns and Reports to Certificateholders;
REMIC Administration.

     (a) REMIC elections as set forth in the Preliminary Statement and this
Section 9.12 shall be made on Forms 1066 or other appropriate federal tax or
information return for the taxable year ending on the last day of the calendar
year in which the Certificates are issued. The regular interests and residual
interest in each REMIC shall be as designated in the Preliminary Statement and
this Section 9.12.

     (b) The Closing Date is hereby designated as the "Startup Day" of each
REMIC within the meaning of section 860G(a)(9) of the Code. The latest possible
maturity date for purposes of Treasury Regulation 1.860G-1(a)(4) will be the
Latest Possible Maturity Date.

     (c) The Securities Administrator shall, for federal income tax purposes,
maintain books and records with respect to each REMIC on a calendar year and on
an accrual basis.

     (d) The Securities Administrator shall represent the Trust Fund in any
administrative or judicial proceeding relating to an examination or audit by any
governmental taxing authority with respect thereto. The Securities Administrator
shall pay any and all tax-related expenses (not including taxes) of each REMIC,
including but not limited to any professional fees or expenses related to audits
or any administrative or judicial proceedings with respect to such REMIC that
involve the Internal Revenue Service or state tax authorities, but only to the
extent that (i) such expenses are ordinary or routine expenses, including
expenses of a routine audit but not expenses of litigation (except as described
in (ii)); or (ii) such expenses or liabilities (including taxes and penalties)
are attributable to the negligence or willful misconduct of the Securities
Administrator in fulfilling its duties hereunder (including its duties as tax
return preparer). The Securities Administrator shall be entitled to
reimbursement of expenses to the extent provided in clause (i) above from the
Distribution Account, provided, however, the Securities Administrator shall not
be entitled to reimbursement for expenses incurred in connection with the
preparation of tax returns and other reports as required by this Section.

     (e) The Securities Administrator shall prepare and file, and the Trustee
shall sign, all of each REMIC's and the Trust Fund's federal and appropriate
state tax and information returns as such REMIC's direct representative. The
expenses of preparing and filing such returns shall be borne by the Securities
Administrator.

     (f) The Securities Administrator or its designee shall perform on behalf of
each REMIC all reporting and other tax compliance duties that are the
responsibility of such REMIC under the Code, the REMIC Provisions, or other
compliance guidance issued by the Internal

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<PAGE>

Revenue Service or any state or local taxing authority. Among its other duties,
if required by the Code, the REMIC Provisions, or other such guidance, the
Securities Administrator shall provide, upon receipt of additional reasonable
compensation, to the Treasury or other governmental authority such information
as is necessary for the application of any tax relating to the transfer of a
Residual Certificate to any disqualified person or organization pursuant to
Treasury Regulation 1.860E-2(a)(5) and any person designated in Section
860E(e)(3) of the Code.

     (g) The Securities Administrator and the Holders of Certificates shall take
any action or cause any REMIC to take any action necessary to create or maintain
the status of any REMIC as a REMIC under the REMIC Provisions and shall assist
each other as necessary to create or maintain such status. None of the
Securities Administrator nor the Holder of any Residual Certificate shall
knowingly take any action, cause any REMIC to take any action or fail to take
(or fail to cause to be taken) any action that, under the REMIC Provisions, if
taken or not taken, as the case may be, could (i) endanger the status of any
REMIC as a REMIC or (ii) result in the imposition of a tax upon any REMIC
(including but not limited to the tax on prohibited transactions as defined in
Code Section 860F(a)(2) and the tax on prohibited contributions set forth on
Section 860G(d) of the Code) (either such event, an "Adverse REMIC Event")
unless the Securities Administrator has received a REMIC Opinion (at the expense
of the party seeking to take such action) to the effect that the contemplated
action will not endanger such status or result in the imposition of such a tax.
In addition, prior to taking any action with respect to any REMIC or the assets
therein, or causing any REMIC to take any action, which is not permitted under
the terms of this Agreement any Holder of a Residual Certificate will consult
with the Securities Administrator, in writing, with respect to whether such
action could cause an Adverse REMIC Event to occur with respect to any REMIC,
and no such Person shall take any such action or cause any REMIC to take any
such action as to which the Securities Administrator has advised it in writing
that an Adverse REMIC Event could occur; provided, however, that if no Adverse
REMIC Event would occur but such action could result in the imposition of
additional taxes on the Residual Certificateholders, no such Person shall take
any such action, or cause any REMIC to take any such action without the written
consent of the Residual Certificateholders.

     (h) Each Holder of a Residual Certificate shall pay when due any and all
taxes imposed on the related REMIC by federal or state governmental authorities.
To the extent that such taxes are not paid by a Residual Certificateholder, the
Securities Administrator shall pay any remaining REMIC taxes out of current or
future amounts otherwise distributable to the Holder of the Residual Certificate
in any such REMIC or, if no such amounts are available, out of other amounts
held in the Distribution Account, and shall reduce amounts otherwise payable to
holders of regular interests in any such REMIC, as the case may be.

     (i) The Securities Administrator shall prepare and file with the Internal
Revenue Service ("IRS"), on behalf of each REMIC created hereunder, an
application for an employer identification number on IRS Form SS-4 or by any
other acceptable method. The Securities Administrator shall also file a Form
8811 as required. The Securities Administrator, upon receipt from the IRS of the
Notice of Taxpayer Identification Number Assigned, shall upon request promptly
forward a copy of such notice to the Depositor. The Securities Administrator
shall furnish any other information that is required by the Code and regulations
thereunder to be made available to Certificateholders. The Depositor shall cause
each Servicer to provide the

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<PAGE>

Securities Administrator with such information as is necessary for the
Securities Administrator to prepare such reports.

     (j) No additional contributions of assets shall be made to any REMIC,
except as expressly provided in this Agreement.

     (k) The Securities Administrator shall not enter into any arrangement by
which any REMIC will receive a fee or other compensation for services.

     (l) The Class R Holder shall act as "tax matters person" with respect to
each REMIC and irrevocably appoints the Securities Administrator to act as its
agent in such roles.

     (m) The Securities Administrator shall prepare or cause to be prepared on
behalf of the Trust Fund, based upon information calculated in accordance with
this Agreement pursuant to instructions given by the Depositor, the Trustee
shall sign, and the Securities Administrator shall file federal tax returns, all
in accordance this Section 9.12. The Securities Administrator shall prepare and
file, and the Trustee shall sign, such state income tax returns and such other
returns as may be required by applicable law relating to the Trust Fund, and, if
required by state law, and shall file any other documents to the extent required
by applicable state tax law (to the extent such documents are in the Securities
Administrator's possession). The Securities Administrator shall forward copies
to the Depositor of all such returns and Form 1099 supplemental tax information
and such other information within the control of the Securities Administrator as
the Depositor may reasonably request in writing, and shall distribute to each
Certificateholder such forms and furnish such information within the control of
the Securities Administrator as are required by the Code and the REMIC
Provisions to be furnished to them, and will prepare and distribute to
Certificateholders Form 1099 (supplemental tax information) (or otherwise
furnish information within the control of the Securities Administrator) to the
extent required by applicable law.

     (n) None of the Securities Administrator, the Trustee or the Depositor, as
assignees under this Agreement, shall provide any consent pursuant to this
Agreement or knowingly take any action under this Agreement that would conflict
with or violate the provisions of this Section 9.12.

     (o) The parties intend that the portion of the Trust Fund consisting of the
right to receive the payments distributable to the Class P Certificates shall be
treated as a "grantor trust" under the Code, for the benefit of the holders of
the Class P Certificates, and the provisions hereof shall be interpreted
consistently with this intention. In furtherance of such intention, the
Securities Administrator shall (i) furnish or cause to be furnished to the
holders of the Class P Certificates information regarding their allocable share
of the income with respect to such grantor trust and (ii) file or cause to be
filed with the Internal Revenue Service, and the Trustee shall sign, Form 1041
(together with any necessary attachments) and such other forms as may be
applicable. The parties intend that such grantor trust shall not be treated as a
WHFIT. The Securities Administrator shall have no obligation hereunder to
monitor whether such grantor trust will be treated as a WHFIT following the
Closing Date, and shall not be required hereunder to report under the WHFIT
Regulations except to the extent it receives written notice that the WHFIT
Regulations are applicable to such grantor trust.

                                      -133-

<PAGE>

     (p) Notwithstanding any other provision of this Agreement, the Securities
Administrator shall comply with all federal withholding requirements respecting
payments to Certificateholders of interest or original issue discount on the
Mortgage Loans and the Certificates, that the Securities Administrator
reasonably believes are applicable under the Code. The consent of
Certificateholders shall not be required for such withholding. In the event the
Securities Administrator withholds any amount from interest or original issue
discount payments or advances thereof to any Certificateholder pursuant to
federal withholding requirements, the Securities Administrator shall, together
with its monthly report to such Certificateholders, indicate such amount
withheld.

     (q) The Trustee and the Securities Administrator agree to indemnify the
Trust Fund and the Depositor for any taxes and costs including, without
limitation, any reasonable attorneys fees imposed on or incurred by the Trust
Fund, the Depositor or the Trustee, as a result of a breach the Trustee's
covenants and the Securities Administrator's covenants, respectively, set forth
in this Section 9.12; provided, however, such liability and obligation to
indemnify in this paragraph shall not be joint and several and none of the
Trustee nor the Securities Administrator shall be liable or be obligated to
indemnify the Trust Fund for the failure by any other to perform any duty under
this Agreement or the breach by any other of any covenant in this Agreement.

     (r) The Securities Administrator covenants and agrees that it shall act as
agent (and the Securities Administrator is hereby appointed to act as agent) of
the Tax Matters Person on behalf of each of the REMICs provided for herein and
that in such capacity it shall: (a) to the extent that they are under its
control conduct the affairs of each of the REMICs provided for herein at all
times that any Certificates are outstanding so as to maintain the status of each
of the REMICs provided for herein as a REMIC under the REMIC Provisions; (b) not
knowingly or intentionally take any action or omit to take any action that would
cause the termination of the REMIC status of any of the REMICs provided for
herein or result in the imposition of tax upon any such REMIC; (c) not knowingly
or intentionally take any action or omit to take any action that would cause the
termination of the grantor trust status under Subpart E, Part I of Subchapter J
of the Code of any of the grantor trusts provided for herein or result in the
imposition of tax upon any such grantor trust; and (d) as and when necessary and
appropriate, represent each of the REMICs provided for herein 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 any of the REMICs provided for herein, enter into settlement
agreements with any governmental taxing agency, extend any statute of
limitations relating to any tax item of any of the REMICs provided for herein,
and otherwise act on behalf of each of the REMICs provided for herein in
relation to any tax matter involving any of such REMICs or any controversy
involving the Trust Fund.

     (s) Each of the Depositor, the Master Servicer, the Securities
Administrator and the Trustee agrees not to take or omit to take knowingly or
intentionally, any action that would cause the termination of the REMIC status
of any of the REMICs provided for herein or result in the imposition of a tax
upon any of the REMICs provided for herein.

     (t) [reserved].

                                      -134-

<PAGE>

     (u) The Depositor hereby instructs and authorizes the Securities
Administrator to make an appropriate election to treat each of the Upper Tier
REMIC, the Lower Tier REMIC and the SWAP REMIC as a REMIC. The Trustee shall
sign the returns providing for such elections and such other tax or information
returns which are provided to it. This Agreement shall be construed so as to
carry out the intention of the parties that each of the Upper Tier REMIC, the
Lower Tier REMIC and the SWAP REMIC be treated as a REMIC at all times prior to
the date on which the Trust Fund is terminated.

          The assets of the SWAP REMIC shall be all of the assets of the Trust
Fund, other than (i) amounts distributable to the Class P Certificates, (ii) the
interests issued by the SWAP REMIC and the interests issued by the Lower Tier
REMIC, (iii) the grantor trusts described in this Section 9.12, (iv) each
Corridor Contract and the Corridor Contract Account and (v) the Swap Agreement
and the Supplemental Interest Trust. The SWAP REMIC shall issue the SWAP REMIC
Regular Interests, which shall be regular interests of such REMIC, and shall
issue the Class SWR Interest, which shall be the sole class of residual interest
in the SWAP REMIC. Each of the SWAP REMIC Regular Interests shall have the
characteristics set forth in the Preliminary Statement and this Section 9.12.

     (v) The assets of the Lower Tier REMIC shall be the SWAP REMIC Regular
Interests. The Lower Tier REMIC shall issue the Lower Tier REMIC Regular
Interests, which shall be regular interests of such REMIC, and shall issue the
Class LTR Interest, which shall be the sole class of residual interest in the
Lower Tier REMIC. Each of the Lower Tier REMIC Regular Interests shall have the
characteristics set forth in its definition, the Preliminary Statement and this
Section 9.12.

          The assets of the Upper Tier REMIC shall be the Lower Tier REMIC
Regular Interests. The REMIC Regular Interests shall be the regular interests in
the Upper Tier REMIC and the Residual Interest shall be the sole class of
residual interest in the Upper Tier REMIC. For federal income tax purposes, the
pass-through rate on each REMIC Regular Interest (other than the Uncertificated
Class C Interest and the Class UT-IO Interest) and on the sole class of residual
interest in the Upper Tier REMIC shall be subject to a cap equal to the Upper
Tier REMIC Net WAC Cap.

          The beneficial ownership of the Class SWR Interest, the Class LTR
Interest and the Residual Interest shall be represented by the Class R
Certificate. The Class SWR Interest and the Class LTR Interest shall not have a
principal balance or bear interest.

     (w) (i) It is intended that the rights of each Class of the Certificates
(other than the Class C and Class P Certificates) to receive payments in respect
of Excess Interest shall be treated as a right in interest rate cap agreements
written by the Class C Certificateholders in favor of the holders of each Class
of the Certificates (other than the Class C and Class P Certificates) and such
shall be accounted for as property held separate and apart from the regular
interests in the Upper Tier REMIC held by the holders of the Senior Certificates
(other than the Class R Certificate), Class M Certificates, Class B Certificates
and the residual interest in the Upper Tier REMIC held by the holder of the
Class R Certificate. For information reporting requirements, the rights of
holders of the Certificates (other than the Class C and Class P Certificates) to
receive payments in respect of Excess Interest shall be assumed to have zero or
a de minimis

                                      -135-

<PAGE>

value. This provision is intended to satisfy the requirements of Treasury
Regulations Section 1.860G-2(i) for the treatment of property rights coupled
with REMIC interests to be separately respected and shall be interpreted
consistently with such regulation. On each Distribution Date, to the extent that
holders of any of the Certificates (other than the Class C and Class P
Certificates) receive payments in respect of Excess Interest, such amounts, to
the extent not derived from payments on the Corridor Contract or the Swap
Agreement, or from payments in respect of Class C Shortfalls as set forth in
Section 9.12(z), will be treated as distributed by the Upper Tier REMIC to
holders of the Class C Certificates pro rata in payment of the amounts specified
in Section 6.01(h) and then paid to holders of the relevant Class of
Certificates pursuant to the related interest rate cap agreement.

          (ii) It is intended that the beneficial owners of the Certificates
(other than the Class P and Class C Certificates) shall be treated as having
entered into a notional principal contract with respect to the beneficial owners
of the Class C Certificates. Pursuant to each such notional principal contract,
all beneficial owners of each Class of Certificates (other than the Class P and
Class C Certificates) shall be treated as having agreed to pay, on each
Distribution Date, to the beneficial owners of the Class C Certificates an
aggregate amount equal to the excess, if any, of (i) the amount payable on such
Distribution Date on the Corresponding REMIC Regular Interest of such Class of
Certificates over (ii) the amount payable on such Class of Certificates on such
Distribution Date (such excess, a "Class Payment Shortfall"). A Class Payment
Shortfall shall be allocated to each Class of Certificates to the extent that
interest accrued on such Class for the related Accrual Period at the
Pass-Through Rate for a Class, computed by substituting "Upper Tier REMIC Net
WAC Cap" for the Available Funds Cap set forth in the definition thereof,
exceeds the amount of interest accrued on such Certificate at the Pass-Through
Rate (without such substitution) for the related Accrual Period, and a Class
Payment Shortfall payable from principal collections shall be allocated to the
most subordinate Class of Certificates with an outstanding principal balance to
the extent of such balance.

     (x) The parties intend that the portion of the Trust Fund consisting of the
Uncertificated Class C Interest, the Class UT-IO Interest, the rights to receive
payments deemed made by the Certificates (other than the Class P and Class C
Certificates) in respect of notional principal contracts described in Section
9.12(w)(ii), the Corridor Contract, the Corridor Contract Account, the
Supplemental Interest Trust which holds the Swap Agreement, the right to receive
payments in respect of Class C Shortfalls as set forth in Section 9.12(z), and
the obligation of the holders of the Class C Certificates to pay amounts in
respect of Excess Interest to the holders of the Certificates (other than the
Class C and Class P Certificates) shall be treated as a "grantor trust" under
the Code, for the benefit of the holders of the Class C Certificates, and the
provisions hereof shall be interpreted consistently with this intention. In
furtherance of such intention, the Securities Administrator shall (i) furnish or
cause to be furnished to the holders of the Class C Certificates information
regarding their allocable share, if any, of the income with respect to such
grantor trust, (ii) file or cause to be filed with the Internal Revenue Service
Form 1041 (together with any necessary attachments) and such other forms as may
be applicable and (iii) comply with such information reporting obligations with
respect to payments from such grantor trust to the holders of Certificates
(other than the Class P Certificates) as may be applicable under the Code. The
parties intend that such grantor trust shall not be treated as a WHFIT. The
Securities Administrator shall have no obligation hereunder to monitor whether
such grantor trust will be treated as a WHFIT following the Closing Date, and
shall not be

                                      -136-

<PAGE>

required hereunder to report under the WHFIT Regulations except to the extent it
receives written notice that the WHFIT Regulations are applicable to such
grantor trust.

     (y) The parties intend that amounts paid to the Swap Counterparty under the
Swap Agreement shall be deemed for federal income tax purposes to be paid by the
Class C Certificates first, out of funds deemed received in respect of the Class
UT-IO Interest, second, out of funds deemed received in respect of the
Uncertificated Class C Interest, and third, out of funds deemed received in
respect of notional principal contracts described in Section 9.12(w)(ii), and
the provisions hereof shall be interpreted consistently with this intention. On
each Distribution Date, to the extent that amounts paid to the Swap Counterparty
are deemed paid out of funds received in respect of the Uncertificated Class C
Interest, such amounts will be treated as distributed by the Upper Tier REMIC to
the Class C Certificates pro rata in payment of the amounts specified in Section
6.01(h) and then paid to the Swap Counterparty pursuant to the Swap Agreement.

          The Supplemental Interest Trust shall be an "outside reserve fund" for
federal income tax purposes and not an asset of any REMIC. Furthermore, the
Holders of the Class C Certificates shall be the beneficial owners of the
Supplemental Interest Trust for all federal income tax purposes, and shall be
taxable on all income earned thereon.

     (z) All payments of principal and interest at the Net Mortgage Rate on each
of the Mortgage Loans (other than amounts distributable to the Class P
Certificates) received by the SWAP REMIC with respect to the Mortgage Loans
shall be paid to the SWAP REMIC Regular Interests until the principal balance of
all such interests have been reduced to zero and any losses allocated to such
interests have been reimbursed. Any available funds remaining in the SWAP REMIC
on a Distribution Date after distributions to the SWAP REMIC Regular Interests
shall be distributed to the Class R Certificates on account of the Class SWR
Interest. On each Distribution Date, the Securities Administrator shall
distribute the aggregate Interest Funds (net of expenses (other than any Net
Swap Payment or Swap Termination Payment required to be made to the Swap
Counterparty) and payments to the Class P Certificates) with respect to each of
the SWAP REMIC Regular Interests based on the interest rates for each such SWAP
REMIC Regular Interest. On each Distribution Date, the Securities Administrator
shall distribute the aggregate Principal Funds with respect to the Mortgage
Loans first to the Class SW-Z Interest until its principal balance is reduced to
zero and then sequentially to each of the other SWAP REMIC Regular Interests in
ascending order of their numerical class designation, in equal amounts to each
such class in such numerical designation, until the principal balance of each
such class is reduced to zero. All losses with respect to the Mortgage Loans
shall be allocated among the SWAP REMIC Regular Interests in the same manner
that principal distributions are allocated. Subsequent Recoveries with respect
to the Mortgage Loans and loss reimbursements shall be allocated among the SWAP
REMIC Regular Interests in the reverse fashion from the manner in which losses
are allocated. Increases in principal amount as a result of Net Negative
Amortization with respect to the Mortgage Loans for any Distribution Date shall
be allocated among the SWAP REMIC Regular Interests, first to the Class SW-Z
Interest up to an amount equal to the accrued interest thereon for such
Distribution Date, and then sequentially, to the other SWAP REMIC Regular
Interests in ascending order of their numerical Class designation, and, with
respect to each pair

                                      -137-

<PAGE>

of Classes having the same numerical designation, in equal amounts to each such
Class, up to an amount equal to the accrued interest thereon for such
Distribution Date.

     All payments received by the Lower Tier REMIC with respect to the SWAP
REMIC Regular Interests shall be paid to the Lower Tier REMIC Regular Interests
until the principal balance of all such interests have been reduced to zero and
any losses allocated to such interests have been reimbursed. Any excess amounts
shall be distributed to the Class LTR Interest.

     On each Distribution Date,

               (i) interest shortfalls with respect to the Mortgage Loans (other
     than interest shortfalls attributable to Negative Amortization) shall be
     allocated to the Lower Tier REMIC Regular Interests (other than the Class
     LT-IO Interest) pro rata based on the interest otherwise accrued thereon;

               (ii) the principal balance of each Lower Tier REMIC Regular
     Interest shall be increased by the amount of interest accrued thereon (net
     of interest shortfalls allocated thereto pursuant to the immediately
     preceding clause (i));

               (iii) cash received by the Lower Tier REMIC with respect to the
     SWAP REMIC Regular Interests shall be distributed first to the Class LT-IO
     Interest in reduction of its principal balance so that its principal
     balance is as close as possible to zero. Any remaining cash shall be
     distributed to, and losses with respect to the Mortgage Loans shall be
     allocated to:

                    first, to each class of Lower Tier REMIC Marker Interest,
          sequentially, beginning with the Lower Tier REMIC Marker Interest the
          Corresponding Certificate of which has the highest Pass-Through Rate
          through the Lower Tier REMIC Marker Interest the Corresponding
          Certificate of which has the lowest Pass-Through Rate, in reduction of
          its principal balance so that its principal balance is as close as
          possible to 50% of the principal balance of its Corresponding
          Certificate; and

                    second, to the Class LTX Interest in reduction of its
          principal balance so that its principal balance is as close as
          possible to the sum of (x) 50% of the aggregate Stated Principal
          Balance of the Mortgage Loans and (y) 50% of the Overcollateralization
          Amount.

               If on any Distribution Date there is an increase in the
     Certificate Principal Balance of any LIBOR Certificate pursuant to the last
     sentence of the definition of Certificate Principal Balance, then there
     shall be a corresponding increase in the principal amount of the Lower Tier
     REMIC Regular Interests allocated as follows:

                    first, to each of the Lower Tier REMIC Regular Interests
          (other than the Class LTX Interest and other than the Class LT-IO
          Interest) so that the principal balance of each such interest is as
          close as possible to 50% of the principal balances of its
          Corresponding Certificate; and

                                      -138-

<PAGE>

                    second, to the Class LTX Interest so that the principal
          balance of such interest is as close as possible to the sum of (x) 50%
          of the aggregate Stated Principal Balance of the Mortgage Loans and
          (y) 50% of the Overcollateralization Amount.

               The excess, if any, of amounts payable with respect to the REMIC
     regular interests held by the Upper Tier REMIC over the amounts payable
     with respect to the REMIC Regular Interests with respect to each Accrual
     Period shall, solely for purposes of the REMIC Provisions, be deemed earned
     by the Securities Administrator as an additional fee, which amount shall be
     deemed paid by the Securities Administrator to the holders of the Class C
     Certificates. It is intended that the rights of the holders of the Class C
     Certificates to receive such deemed payments ("Class C Shortfalls") shall
     be treated as rights in respect of an interest rate cap contract written by
     the Securities Administrator in favor of the holders of the Class C
     Certificates and shall be accounted for as property separate and apart from
     the REMIC regular interests represented by the Class C Certificates. This
     provision is intended to comply with the requirements of Treasury
     Regulations Section 1.860G-2(i) for the treatment of property rights
     coupled with regular interests to be separately respected and shall be
     interpreted consistently with such regulation. For information reporting
     purposes, it will be assumed that the right to receive deemed payments in
     respect of Class C Shortfalls has no value. The Securities Administrator
     and the beneficial holders of the Class C Certificates by their acceptance
     of such Certificates agree that they will take tax reporting positions that
     allocate no more than a nominal value to such right and that they will
     adopt tax reporting positions consistent with the payments deemed made to
     the Class C Certificates in respect of Class C Shortfalls as payments in
     respect of interest rate cap agreements written by the Securities
     Administrator.

                                    ARTICLE X
                                   TERMINATION

     Section 10.01 Termination upon Liquidation or Repurchase of all Mortgage
Loans.

     (a) Subject to Section 10.03, the obligations and responsibilities of the
Depositor, the Master Servicer, the Securities Administrator and the Trustee
created hereby with respect to that portion of the Trust Fund relating to the
Certificates shall terminate upon the earlier of (a) an Optional Termination and
(b) the later of (i) the maturity or other liquidation of the last Mortgage Loan
remaining in the Trust Fund (or any Advance with respect thereto) 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, as
applicable. In no event shall the trusts created hereby continue beyond the
earlier of (i) the expiration of 21 years from the death of the last 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 hereof and (ii) the Latest
Possible Maturity Date.

     (b) On or before the Determination Date following the Initial Optional
Termination Date, the Securities Administrator shall attempt to terminate that
portion of the Trust Fund relating to the Certificates by conducting an auction
of all of the Mortgage Loans and REO Properties via a solicitation of bids from
at least three (3) bidders, each of which shall be a

                                      -139-

<PAGE>

nationally recognized participant in mortgage finance (the "Auction"). The
Depositor and the Securities Administrator agree to work in good faith to
develop bid procedures in advance of the Initial Optional Termination Date to
govern the operation of the Auction. The Securities Administrator shall be
entitled to retain an investment banking firm and/or other agents in connection
with the Auction, the cost of which shall be included in the Optional
Termination Price (unless an Optional Termination does not occur in which case
such costs shall be an expense of the Issuing Entity). The Securities
Administrator shall accept the highest bid received at the Auction; provided
that the amount of such bid equals or exceeds the Optional Termination Price.
The Securities Administrator shall determine the Optional Termination Price
based upon information provided by (i) the Master Servicer with respect to the
amounts described in clauses (A) and (B) of the definition of "Optional
Termination Price" (other than Securities Administrator's expenses) and (ii) the
Depositor with respect to the information described in clause (C) of the
definition of "Optional Termination Price." The Securities Administrator may
conclusively rely upon the information provided to it in accordance with the
immediately preceding sentence and shall not have any liability for the failure
of any party to provide such information. Notwithstanding anything herein to the
contrary, only an amount equal to the Optional Termination Price, reduced by the
portion thereof consisting of the sum of (x) any Swap Termination Payment and
(y) the amount of any unpaid Net Swap Payments and any other amounts owed to the
Swap Counterparty that would not otherwise be funded by the Optional Termination
Price but for clause (E) of the definition of "Optional Termination Price" (such
portion, the "Swap Optional Termination Payment"), shall be made available for
distribution to the Certificates. The Swap Optional Termination Payment shall be
withdrawn by the Securities Administrator from the Distribution Account and
remitted to the Supplemental Interest Trust for payment to the Swap
Counterparty. The Swap Optional Termination Payment shall not be part of any
REMIC and shall not be paid into any account which is part of any REMIC.

     If an Optional Termination does not occur as a result of the Auction's
failure to achieve the Optional Termination Price, the NIMs Insurer (or the
Master Servicer, if the NIMs Insurer does not do so) may, on any Distribution
Date following such Auction, at its option, terminate that portion of the Trust
Fund relating to the Certificates by purchasing all of the Mortgage Loans and
REO Properties at a price equal to the Optional Termination Price. In connection
with such termination, the Optional Termination Price shall be delivered to the
Securities Administrator no later than the Business Day immediately preceding
the related Distribution Date. Notwithstanding anything to the contrary herein,
the Optional Termination Amount paid to the Securities Administrator by the
winning bidder at the Auction or by the NIMs Insurer or by the Master Servicer
shall be deposited by the Securities Administrator directly into the
Distribution Account immediately upon receipt. Upon any termination as a result
of an Auction, the Securities Administrator shall, out of the Optional
Termination Amount deposited into the Distribution Account, (x) pay the
Securities Administrator its costs and expenses necessary to conduct the Auction
and any other unreimbursed amounts owing to it and (y) pay to the Master
Servicer or Servicer, the aggregate amount of any unreimbursed out-of-pocket
costs and expenses owed to the Master Servicer or Servicer and any unpaid or
unreimbursed Servicing Fees, Advances and Servicing Advances.

     (c) Notwithstanding anything to the contrary in clause (b) above, in the
event that the Securities Administrator and the Trustee receive the written
opinion of a nationally recognized

                                      -140-

<PAGE>

participant in mortgage finance acceptable to the Sponsor that the Mortgage
Loans and REO Properties to be included in the Auction will not be saleable at a
price sufficient to achieve the Optional Termination Price, the Securities
Administrator need not conduct the Auction. In such event, the NIMs Insurer, if
any, and the Master Servicer in the event the NIMs Insurer declines to exercise
its option, shall have the option to purchase the Mortgage Loans and REO
Properties at the Optional Termination Price as of the Initial Optional
Termination Date.

     Section 10.02 Final Distribution on the Certificates.

     If on any Determination Date, (i) the Securities Administrator determines
that there are no Outstanding Mortgage Loans and no other funds or assets in the
Trust Fund relating to the Mortgage Loans other than the funds in the Master
Servicer Collection Account, the Securities Administrator shall send a final
distribution notice promptly to each Certificateholder and the NIMs Insurer or
(ii) the Securities Administrator determines that a Class of Certificates shall
be retired after a final distribution on such Class, the Securities
Administrator shall notify the Certificateholders within seven (7) Business Days
after such Determination Date that the final distribution in retirement of such
Class of Certificates is scheduled to be made on the immediately following
Distribution Date. Any final distribution made pursuant to the immediately
preceding sentence will be made only upon presentation and surrender of the
Certificates at the office of the Securities Administrator.

     Notice of any partial termination of the Issuing Entity, 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 Securities Administrator by letter to Certificateholders mailed no later
than the last calendar day of the month immediately preceding the month of such
final distribution (or with respect to an Auction, mailed no later than one
Business Day following completion of such Auction). 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 location of the office or agency at which
such presentation and surrender must be made, and (c) that the Record Date
otherwise applicable to such Distribution Date is not applicable, distributions
being made only upon presentation and surrender of the Certificates at the
office therein specified. The Securities Administrator will give such notice to
the NIMs insurer, if any, the Swap Counterparty and to each Rating Agency at the
time such notice is given to Certificateholders.

     In the event such notice is given, the Master Servicer shall cause all
funds in the Master Servicer Collection Account to be deposited in the
Distribution Account on the Business Day prior to the applicable Distribution
Date in an amount equal to the final distribution in respect of the
Certificates. Upon receipt of written notice of such final deposit with respect
to the Issuing Entity and the receipt by the Trustee, or its Custodian, of a
Request for Release therefor, the Trustee, or its Custodian, shall promptly
release to the Securities Administrator, the NIMs Insurer or the Master
Servicer, as applicable, the Mortgage Files for the Mortgage Loans.

     Upon presentation and surrender of the Certificates, the Securities
Administrator shall cause to be distributed to Certificateholders of each Class
the amounts allocable to such Certificates held in the Distribution Account in
the order and priority set forth in Section 6.01 hereof on the final
Distribution Date and in proportion to their respective Percentage Interests.

                                      -141-

<PAGE>

     In the event that any affected Certificateholders shall not surrender
Certificates for cancellation within six months after the date specified in the
above-mentioned written notice, the Securities Administrator 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 Securities
Administrator 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 that remain a part of the Issuing Entity. If within one
year after the second notice all Certificates shall not have been surrendered
for cancellation, the Class R Certificateholders shall be entitled to all
unclaimed funds and other assets of the Issuing Entity that remain subject
hereto. Upon payment to the Class R Certificateholders of such funds and assets,
the Securities Administrator shall have no further duties or obligations with
respect thereto.

     Section 10.03 Additional Termination Requirements.

     (a) In the event the Securities Administrator, the NIMs Insurer or the
Master Servicer exercises its purchase option as provided in Section 10.01, that
portion of the Trust Fund relating to the Mortgage Loans shall be terminated in
accordance with the following additional requirements, unless the Securities
Administrator shall have been furnished with an Opinion of Counsel to the effect
that the failure of the Issuing Entity to comply with the requirements of this
Section will not (i) result in the imposition of taxes on "prohibited
transactions" of the Issuing Entity as defined in Section 860F of the Code or
(ii) cause any REMIC constituting part of the Issuing Entity to fail to qualify
as a REMIC at any time that any Certificates are outstanding:

          (i) Within 90 days prior to the final Distribution Date, the
     Securities Administrator shall adopt and sign a plan of complete
     liquidation of the Issuing Entity as provided to it by the terminating
     purchaser, meeting the requirements of a "qualified liquidation" under
     Section 860F of the Code and any regulations thereunder; and

          (ii) At or after the time of adoption of such a plan of complete
     liquidation and at or prior to the final Distribution Date, the Securities
     Administrator shall sell all of the assets of the Issuing Entity for cash
     pursuant to the terms of the plan of complete liquidation.

     (b) By their acceptance of Certificates, the Holders thereof hereby agree
to appoint the Securities Administrator as their attorney in fact to: (i) adopt
such a plan of complete liquidation (and the Certificateholders hereby appoint
the Securities Administrator as their attorney in fact to sign such plan) as
appropriate and (ii) to take such other action in connection therewith as may be
reasonably required to carry out such plan of complete liquidation all in
accordance with the terms hereof.

                                      -142-

<PAGE>

                                   ARTICLE XI
                            MISCELLANEOUS PROVISIONS

     Section 11.01 Intent of Parties. The parties intend that each REMIC shall
be treated as a REMIC for federal income tax purposes and that the provisions of
this Agreement should be construed in furtherance of this intent.

     Section 11.02 Amendment.

     (a) This Agreement may be amended from time to time by the Depositor, the
Master Servicer, the Securities Administrator and the Trustee, with the consent
of the NIMs Insurer and without the consent of any of the Certificateholders to:

               (i) to cure any ambiguity or correct any mistake,

               (ii) to correct, modify or supplement any provision herein which
     may be inconsistent with any other provision herein,

               (iii) to add any other provisions with respect to matters or
     questions arising under this Agreement, or

               (iv) to modify, alter, amend, add to or rescind any of the terms
     or provisions contained in this Agreement; provided, however, that, in the
     case of clauses (iii) and (iv), such amendment will not, as evidenced by an
     Opinion of Counsel addressed to the Securities Administrator to such
     effect, adversely affect in any material respect the interests of any
     Certificateholder; provided, further, however, that such amendment will be
     deemed to not adversely affect in any material respect the interest of any
     Holder if the Person requesting such amendment obtains a letter from each
     Rating Agency stating that such amendment will not result in a reduction or
     withdrawal of its rating of any Class of the Certificates, it being
     understood and agreed that any such letter in and of itself will not
     represent a determination as to the materiality of any such amendment and
     will represent a determination only as to the credit issues affecting any
     such rating.

     The Securities Administrator shall not enter into any amendment to this
Agreement that could have a materially adverse effect on the Cap Contract
Counterparty or the Swap Counterparty without first obtaining the prior written
consent of the Cap Contract Counterparty or Swap Counterparty, respectively.

     Notwithstanding the foregoing, without the consent of the
Certificateholders, the Depositor, the Master Servicer, the Securities
Administrator and the Trustee may at any time and from time to time amend this
Agreement to modify, eliminate or add to any of its provisions to such extent as
shall be necessary or appropriate to maintain the qualification of any of the
REMICs provided for herein as REMICs under the Code or to avoid or minimize the
risk of the imposition of any tax on the Issuing Entity or any of the REMICs
provided for herein pursuant to the Code that would be a claim against the
Issuing Entity at any time prior to the final redemption of the Certificates,
provided that the Trustee, the NIMs Insurer and the Securities Administrator
shall have been provided an Opinion of Counsel addressed to the Trustee and the
Securities Administrator, which opinion shall be an expense of the party
requesting such

                                      -143-
<PAGE>

amendment but in any case shall not be an expense of the Trustee and the
Securities Administrator, to the effect that such action is necessary or
appropriate to maintain such qualification or to avoid or minimize the risk of
the imposition of such a tax.

     (b) This Agreement may also be amended from time to time by the Master
Servicer, the Depositor, the Securities Administrator and the Trustee, with the
consent of the Holders of Certificates evidencing Percentage Interests
aggregating not less than 51% of the Certificate Principal Balance of the
Certificates or of the applicable Class or Classes, if such amendment affects
only such Class or Classes, with the consent of the NIMs Insurer, 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 Certificateholders; provided, however, that no such amendment shall (i)
reduce in any manner the amount of, or delay the timing of, payments received on
Mortgage Loans which are required to be distributed on any Regular Certificate
without the consent of the Holder of such Regular Certificate, or (ii) reduce
the aforesaid percentage of Certificates the Holders of which are required to
consent to any such amendment, without the consent of the Holders of all
Certificates then outstanding. Notwithstanding any contrary provision of this
Agreement, the Trustee shall not consent to any amendment to this Agreement
unless it shall have first received an Opinion of Counsel addressed to the
Trustee, which opinion shall be an expense of the party requesting such
amendment but in any case shall not be an expense of the Trustee, to the effect
that such amendment is permitted hereunder and will not cause the imposition of
any tax on the Issuing Entity, any of the REMICs provided for herein or the
Certificateholders or cause any of the REMICs provided for herein to fail to
qualify as a REMIC at any time that any Certificates are outstanding.

     (c) Promptly after the execution of any such amendment, the Securities
Administrator shall furnish a copy of such amendment or written notification of
the substance of such amendment to each Certificateholder, with a copy to the
Rating Agencies.

     (d) In the case of an amendment under Section 11.02(b) above, it shall not
be necessary for the Certificateholders to approve the particular form of such
an amendment. Rather, it shall be sufficient if the Certificateholders approve
the substance of the amendment. 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.

     (e) Prior to the execution of any amendment to this Agreement, the Trustee
and the NIMs Insurer shall be entitled to receive and rely upon an Opinion of
Counsel stating that the execution of such amendment is authorized or permitted
by this Agreement and will not adversely affect the status of any REMIC created
hereunder. The Trustee and the Securities Administrator may, but shall not be
obligated to, enter into any such amendment which affects the Trustee's or the
Securities Administrator's own respective rights, duties or immunities under
this Agreement.

     Section 11.03 Recordation of Agreement. To the extent permitted by
applicable law, 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 Mortgaged Properties are situated, and
in any other appropriate public recording office or elsewhere. The

                                     -144-

<PAGE>

Depositor shall effect such recordation, at the expense of the Issuing Entity
upon the request in writing of a Certificateholder, but only if such direction
is accompanied by an Opinion of Counsel (provided at the expense of the
Certificateholder requesting recordation) to the effect that such recordation
would materially and beneficially affect the interests of the Certificateholders
or is required by law.

     Section 11.04 Limitation on Rights of Certificateholders.

     (a) The death or incapacity of any Certificateholder shall not terminate
this Agreement or the Issuing Entity, nor entitle such Certificateholder's legal
representatives or heirs to claim an accounting or to take any action or
proceeding in any court for a partition or winding up of the Issuing Entity, nor
otherwise affect the rights, obligations and liabilities of the parties hereto
or any of them.

     (b) Except as expressly provided in this Agreement, no Certificateholders
shall have any right to vote or in any manner otherwise control the operation
and management of the Issuing Entity, or the obligations of the parties hereto,
nor shall anything herein set forth, or contained in the terms of the
Certificates, be construed so as to establish the Certificateholders from time
to time as partners or members of an association; nor shall any
Certificateholders be under any liability to any third Person by reason of any
action taken by the parties to this Agreement pursuant to any provision hereof.

     (c) No Certificateholder shall have any right by virtue of any provision of
this Agreement to institute any suit, action or proceeding in equity or at law
upon, under or with respect to this Agreement against the Depositor, the
Securities Administrator, the Master Servicer or any successor to any such
parties unless (i) such Certificateholder previously shall have given to the
Trustee a written notice of a continuing default, as herein provided, (ii) the
Holders of Certificates evidencing Percentage Interests aggregating not less
than 51% of the Trust Fund shall have made written request upon 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 and expenses and liabilities to be incurred therein or
thereby, and (iii) 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.

     (d) No one or more Certificateholders shall have any right by virtue of any
provision of this Agreement to affect the rights of any other Certificateholders
or to obtain or seek to obtain priority or preference over any other such
Certificateholder, or to enforce any right under this Agreement, except in the
manner herein provided and for the equal, ratable and common benefit of all
Certificateholders. For the protection and enforcement of the provisions of this
Section 11.04, each and every Certificateholder and the Trustee shall be
entitled to such relief as can be given either at law or in equity.

     Section 11.05 Acts of Certificateholders.

     (a) Any request, demand, authorization, direction, notice, consent, waiver
or other action provided by this Agreement to be given or taken by
Certificateholders may be embodied in and

                                     -145-

<PAGE>

evidenced by one or more instruments of substantially similar tenor signed by
such Certificateholders in person or by an agent duly appointed in writing.
Except as herein otherwise expressly provided, such action shall become
effective when such instrument or instruments are delivered to the Trustee and,
where it is expressly required, to the Depositor. Proof of execution of any such
instrument or of a writing appointing any such agent shall be sufficient for any
purpose of this Agreement and conclusive in favor of the Trustee and the
Depositor, if made in the manner provided in this Section 11.05.

     (b) The fact and date of the execution by any Person of any such instrument
or writing may be proved by the affidavit of a witness of such execution or by a
certificate of a notary public or other officer authorized by law to take
acknowledgments of deeds, certifying that the individual signing such instrument
or writing acknowledged to him the execution thereof. Where such execution is by
a signer acting in a capacity other than his or her individual capacity, such
certificate or affidavit shall also constitute sufficient proof of his or her
authority. The fact and date of the execution of any such instrument or writing,
or the authority of the individual executing the same, may also be proved in any
other manner which the Trustee deems sufficient.

     (c) The ownership of Certificates (notwithstanding any notation of
ownership or other writing on such Certificates, except an endorsement in
accordance with Section 5.02 made on a Regular Certificate presented in
accordance with Section 5.04) shall be proved by the Certificate Register, and
neither the Trustee, the Securities Administrator, the Depositor, the Master
Servicer nor any successor to any such parties shall be affected by any notice
to the contrary.

     (d) Any request, demand, authorization, direction, notice, consent, waiver
or other action of the holder of any Regular Certificate shall bind every future
holder of the same Regular Certificate and the holder of every Regular
Certificate issued upon the registration of transfer or exchange thereof, if
applicable, or in lieu thereof with respect to anything done, omitted or
suffered to be done by the Trustee, the Securities Administrator, the Depositor,
the Master Servicer or any successor to any such party in reliance thereon,
whether or not notation of such action is made upon such Certificates.

     (e) In determining whether the Holders of the requisite percentage of
Certificates evidencing Percentage Interests have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, Certificates
owned by the Trustee, the Securities Administrator, the Depositor, the Master
Servicer or any Affiliate thereof shall be disregarded, except as otherwise
provided in Section 11.02(b) and except that, in determining whether the
Securities Administrator or the Trustee shall be protected in relying upon any
such request, demand, authorization, direction, notice, consent or waiver, only
Certificates which a Responsible Officer of the Trustee knows to be so owned
shall be so disregarded. Certificates which have been pledged in good faith to
the Trustee, the Securities Administrator, the Depositor, the Master Servicer or
any Affiliate thereof may be regarded as outstanding if the pledgor establishes
to the satisfaction of the Securities Administrator the pledgor's right to act
with respect to such Certificates and that the pledgor is not an Affiliate of
the Trustee, the Securities Administrator, the Depositor, or the Master
Servicer, as the case may be.

                                     -146-

<PAGE>

     Section 11.06 Governing Law. THIS AGREEMENT AND THE CERTIFICATES SHALL BE
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REFERENCE
TO ITS CONFLICT OF LAWS RULES AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE
PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.

     Section 11.07 Notices. All demands and notices hereunder shall be in
writing and shall be deemed given when delivered at (including delivery by
facsimile) or mailed by registered mail, return receipt requested, postage
prepaid, or by recognized overnight courier, to (i) in the case of the
Depositor, 250 Vesey Street, 4 World Financial Center, New York, New York 10080,
Attention: Vice President-Servicing, telecopier number: (212) 449-1000, or to
such other address as may hereafter be furnished to the other parties hereto in
writing; (ii) in the case of the Trustee, at its Corporate Trust Office, or such
other address as may hereafter be furnished to the other parties hereto in
writing; (iii) in the case of the Master Servicer or Securities Administrator,
Wells Fargo Bank, N.A., P.O. Box 98, Columbia, Maryland 21046, Attention: Client
Service Manager MANA Series 2007-OAR4, or, in the case of overnight deliveries,
9062 Old Annapolis Road, Columbia, Maryland 21045-1951, Attention: Client
Manager-MANA Series 2007-OAR4, facsimile no.: (410) 715-2380, with a copy to
Sixth Street and Marquette Avenue, Minneapolis, Minnesota 55479, Attention:
Corporate Trust Services-MANA 2007-OAR4, or such other address as may hereafter
be furnished to the other parties hereto in writing; (iv) in the case of the
Custodian, Wells Fargo Bank, N.A., 1015 10th Avenue Southeast, MS 0031,
Minneapolis, Minnesota 55414, Attention: MANA Series 2007-OAR4; or such other
address as may hereafter be furnished to the other parties hereto in writing;
(v) in the case of the Rating Agencies, Moody's Investors Service, Inc., 99
Church Street, 4th Floor, New York, New York 10007 and Standard & Poor's, a
division of The McGraw-Hill Companies, Inc., 55 Water Street, New York, New York
10041; or (vi) in the case of the Cap Contract Counterparty and the Swap
Counterparty, Morgan Stanley Capital Markets Inc., Transaction Management Group,
1585 Broadway, New York, New York 10036-8293, Attention: Chief Legal Officer.
Any notice delivered to the Depositor, the Trustee, the Securities Administrator
or the Master Servicer under this Agreement shall be effective only upon
receipt. Any notice required or permitted to be mailed to a Certificateholder,
unless otherwise provided herein, shall be given by first-class mail, postage
prepaid, at the address of such Certificateholder as shown in the Certificate
Register. Any notice so mailed within the time prescribed in this Agreement
shall be conclusively presumed to have been duly given when mailed, whether or
not the Certificateholder receives such notice.

     Section 11.08 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 severed 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 11.09 Successors and Assigns. The provisions of this Agreement
shall be binding upon and inure to the benefit of the respective successors and
assigns of the parties hereto.

                                     -147-

<PAGE>

     Section 11.10 Article and Section Headings. The article and section
headings herein are for convenience of reference only, and shall not limit or
otherwise affect the meaning hereof.

     Section 11.11 Counterparts. This Agreement may be executed in two or more
counterparts each of which when so executed and delivered shall be an original
but all of which together shall constitute one and the same instrument.

     Section 11.12 Notice to Rating Agencies. The Trustee shall promptly provide
notice to each Rating Agency and the NIMs Insurer with respect to each of the
following of which it has actual knowledge:

     1. Any material change or amendment to this Agreement or the Applicable
Servicing Agreements;

     2. The occurrence of any Event of Default that has not been cured;

     3. The resignation or termination of the Trustee, the Master Servicer or
the Securities Administrator;

     4. The repurchase or substitution of Mortgage Loans;

     5. The final payment to Certificateholders; and

     6. Any change in the location of the Master Servicer Collection Account or
the Distribution Account.

     Section 11.13 Third Party Rights. (a) The Cap Contract Counterparty and
Swap Counterparty shall be deemed third party beneficiaries of this Agreement
regarding provisions related to payments owed to the Cap Contract Counterparty
or Swap Counterparty, respectively, so long as any of the Corridor Contract or
the Swap Agreement, as applicable, remain in effect. The Custodian shall be
deemed a third party beneficiary of this Agreement regarding provisions related
to indemnifying the Custodian so long as the Custodian remains custodian under
the Custodial Agreement.

          (b) The NIMs Insurer shall be deemed a third-party beneficiary of this
Agreement to the same extent as if it were a party hereto, and shall have the
right to enforce the provisions of this Agreement.

     Section 11.14 Additional Rights of the NIMs Insurer.

          (a) Provided that a party has been provided with the contact
information of the NIMs Insurer, such party, any agent thereof and any successor
thereto shall furnish to the NIMs Insurer a copy of any notice, direction,
demand, opinion, schedule, list, certificate or report required to be provided
under this Agreement and provided by it or on its behalf to any other Person
pursuant to this Agreement at the same time, in the same form and in the same
manner as such communication is so provided and shall address or cause such
communication to be addressed to the NIMs Insurer in addition to any other
addressee thereof. With respect to the Master Servicer, the Securities
Administrator and the Trustee, such obligation shall be satisfied

                                     -148-

<PAGE>

with the provision of access to the NIMs Insurer to the Master Servicer's or the
Securities Administrator's website.

          (b) Wherever in this Agreement there shall be a requirement that there
be no downgrade, reduction, withdrawal or qualification of or other effect on
the rating of any Class of Certificates by any Rating Agency as of any date,
there also shall be deemed to be a requirement that there be no such effect on
any class of notes issued pursuant to the Indenture and guaranteed by the NIMs
Insurer as of such date. In addition, unless there exists a continuance of any
failure by the NIMs Insurer to make a required payment under the policy insuring
the NIM Notes (such event, a "NIMs Insurer Default"), wherever in this Agreement
there shall be a requirement that any Person or any communication, object or
other matter be acceptable or satisfactory to or otherwise receive the consent
or other approval of any other Person (whether as a condition to the eligibility
of such Person to act in any capacity, as a condition to any circumstance or
state of affairs related to such matter, or otherwise), there also shall be
deemed to be a requirement that such Person or matter be approved in writing by
the NIMs Insurer, which approval shall not be unreasonably withheld or delayed.

                                   ARTICLE XII
                             PROHIBITED TRANSACTIONS

     Section 12.01 [Reserved].

     Section 12.02 Prohibited Transactions and Activities. None of the Depositor
nor the Securities Administrator shall sell, dispose of, or substitute for any
of the Mortgage Loans, except in a disposition pursuant to (i) the foreclosure
of a Mortgage Loan, (ii) the bankruptcy of the Trust Fund, (iii) the termination
of each REMIC pursuant to Article X of this Agreement, (iv) a substitution
pursuant to Article II of this Agreement or (v) a repurchase of Mortgage Loans
pursuant to Article II of this Agreement, nor acquire any assets for any REMIC,
nor sell or dispose of any investments in the Distribution Account for gain, nor
accept any contributions to any REMIC after the Closing Date, unless it has
received an Opinion of Counsel (at the expense of the party causing such sale,
disposition, or substitution) that such disposition, acquisition, substitution,
or acceptance will not (a) affect adversely the status of any such REMIC as a
REMIC or of the interests therein other than the Residual Certificate as the
regular interests therein, (b) affect the distribution of interest or principal
on the Certificates, (c) result in the encumbrance of the assets transferred or
assigned to the Trust Fund (except pursuant to the provisions of this Agreement)
or (d) cause any such REMIC to be subject to any tax including a tax on
prohibited transactions or prohibited contributions pursuant to the REMIC
Provisions.

     Section 12.03 Indemnification with Respect to Prohibited Transactions or
Loss of REMIC Status.

     In the event that a REMIC fails to qualify as a REMIC, loses its status as
a REMIC, or incurs federal, state or local taxes as a result of a prohibited
transaction or prohibited contribution under the REMIC Provisions due to the
negligent performance by the Securities Administrator of its duties and
obligations set forth herein, the Securities Administrator shall indemnify the
Certificateholders against any and all losses, claims, damages, liabilities or
expenses ("Losses") resulting from such negligence; provided, however, that the
Securities Administrator shall not be

                                     -149-

<PAGE>

liable for any such Losses attributable to the action or inaction of the
Depositor or the Holder of the Residual Certificate, nor for any such Losses
resulting from misinformation provided by any of the foregoing parties on which
the Securities Administrator has relied. Notwithstanding the foregoing, however,
in no event shall the Trustee or the Securities Administrator have any liability
(1) for any action or omission that is taken in accordance with and in
compliance with the express terms of, or which is expressly permitted by the
terms of, this Agreement or the Mortgage Loan Purchase Agreement, (2) for any
Losses other than arising out of malfeasance, willful misconduct or negligent
performance by the Securities Administrator with respect to its duties and
obligations set forth herein, and (3) for any special or consequential damages
to Certificateholders of the related Residual Certificate (in addition to
payment of principal and interest on the Certificates).

     Section 12.04 REO Property.

     (a) Notwithstanding any other provision of this Agreement, the Securities
Administrator shall not, except to the extent provided in this Agreement for
which the Securities Administrator is obligated to perform, knowingly permit any
Servicer to rent, lease, otherwise earn income or take any other action on
behalf of any REMIC with respect to any REO Property other than as provided in
Section 12.04(b) of this Agreement.

     (b) The Depositor shall cause each Servicer (to the extent provided in the
Applicable Servicing Agreement) to make reasonable efforts to sell any REO
Property for its fair market value.

                                  ARTICLE XIII
                                   [RESERVED]

                                   ARTICLE XIV
                                  THE DEPOSITOR

     Section 14.01 Respective Liabilities of the Depositor.

     The Depositor shall be liable in accordance herewith only to the extent of
the obligations specifically and respectively imposed upon and undertaken by it
herein.

     Section 14.02 Merger or Consolidation of the Depositor.

     Except as provided in the next paragraph, the Depositor will keep in full
effect its existence, rights and franchises as a corporation or banking
association under the laws of the United States or under the laws of one of the
States thereof and will 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 duties under this Agreement.

     Any Person into which the Depositor may be merged or consolidated, or any
Person resulting from any merger or consolidation to which the Depositor shall
be a party, or any Person succeeding to the business of the Depositor, shall be
the successor of the Depositor, as the case

                                     -150-

<PAGE>

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 (except for the execution of an assumption agreement where such
succession is not effected by operation of law).

     Section 14.03 Limitation on Liability of the Depositor and Others.

     None of the Depositor nor any of the directors, officers, employees or
agents of the Depositor shall be under any liability to the Indemnified Persons,
Issuing Entity or 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 or any such Person against any breach of representations or warranties
made by it herein or protect the Depositor or any such Person from any liability
that would otherwise be imposed by reasons of willful misfeasance, bad faith or
negligence in the performance of duties or by reason of reckless disregard of
obligations and duties hereunder. The Depositor and any director, officer,
employee or agent of the Depositor 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 and any director, officer, employee or
agent of the Depositor shall be indemnified by the Issuing Entity and held
harmless against any loss, liability or expense, incurred in connection with the
performance of their duties under this Agreement or 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 (i) incurred by reason of willful
misfeasance, bad faith or negligence in the performance of duties hereunder or
by reason of reckless disregard of obligations and duties hereunder or (ii)
which does not constitute an "unanticipated expense" within the meaning of
Treasury Regulation Section 1.860G-1(b)(3)(ii). The Depositor shall not be under
any obligation to appear in, prosecute or defend any legal action that is not
incidental to its respective duties hereunder and that in its opinion may
involve it in any expense or liability; provided, however, that the Depositor in
its discretion may undertake any such action that it may deem necessary or
desirable in respect of this Agreement and the rights and duties of the parties
hereto and the interests of the Securities Administrator 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 Issuing Entity, and the Depositor shall be entitled to be
reimbursed therefor out of the Collection Accounts.

                                     -151-

<PAGE>

     IN WITNESS WHEREOF, the Depositor, the Trustee, the Master Servicer and the
Securities Administrator have caused their names to be signed hereto by their
respective officers thereunto duly authorized as of the day and year first above
written.

                                        MERRILL LYNCH MORTGAGE INVESTORS, INC.,
                                        as Depositor

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:

                                        HSBC BANK USA, NATIONAL ASSOCIATION,
                                        as Trustee

                                        By:
                                            ------------------------------------
                                        Name: Elena Zheng
                                        Title: Assistant Vice President

                                        WELLS FARGO BANK, N.A.,
                                        as Master Servicer

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:

                                        WELLS FARGO BANK, N.A.,
                                        as Securities Administrator

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:
<PAGE>

                                   EXHIBIT A-1

                    FORM OF CLASS A AND CLASS M CERTIFICATES

SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS 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.

THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN THE
DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER OR THE SECURITIES ADMINISTRATOR
REFERRED TO BELOW OR ANY OF THEIR AFFILIATES. NONE OF THIS CERTIFICATE, THE
REMIC REGULAR INTEREST REPRESENTED HEREBY OR THE UNDERLYING MORTGAGE LOANS ARE
GUARANTEED OR INSURED BY THE DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER, THE
SECURITIES ADMINISTRATOR OR BY ANY OF THEIR AFFILIATES OR BY ANY GOVERNMENTAL
AGENCY OR INSTRUMENTALITY.

[APPLICABLE SOLELY TO THE CLASS A CERTIFICATES] UNTIL THE TERMINATION OF THE
SWAP AGREEMENT, EACH TRANSFEREE OF THIS CERTIFICATE SHALL BE DEEMED TO REPRESENT
(OR IN THE CASE OF A DEFINITIVE CERTIFICATE, SHALL REPRESENT) TO THE SECURITIES
ADMINISTRATOR THAT (A) SUCH TRANSFEREE IS NOT, AND IS NOT ACTING FOR, ON BEHALF
OF OR WITH ANY ASSETS OF, ANY EMPLOYEE BENEFIT PLAN OR OTHER ARRANGEMENT SUBJECT
TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED
("ERISA"), OR ANY PLAN SUBJECT TO SECTION 4975 OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED (THE "CODE"), OR (B) THE TRANSFEREE'S ACQUISITION AND HOLDING
OF THIS CERTIFICATE WILL NOT CONSTITUTE OR RESULT IN A NON-EXEMPT PROHIBITED
TRANSACTION UNDER TITLE I OF ERISA OR SECTION 4975 OF THE CODE.

[APPLICABLE SOLELY TO THE CLASS M CERTIFICATES.] NO TRANSFER OF THIS CERTIFICATE
SHALL BE REGISTERED UNLESS THE PROSPECTIVE TRANSFEREE PROVIDES THE SECURITIES
ADMINISTRATOR WITH (A) A REPRESENTATION THAT SUCH TRANSFEREE IS NOT AN EMPLOYEE
BENEFIT PLAN OR OTHER ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT
INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), A PLAN SUBJECT TO SECTION
4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE") OR A PLAN
SUBJECT TO ANY PROVISION UNDER ANY FEDERAL, STATE, LOCAL, NON-U.S. OR OTHER LAWS
OR REGULATIONS THAT ARE SUBSTANTIVELY SIMILAR TO THE FOREGOING PROVISIONS OF
ERISA OR THE CODE ("SIMILAR LAW") (COLLECTIVELY, A "PLAN"), AND IS NOT DIRECTLY
OR INDIRECTLY ACQUIRING THIS CERTIFICATE FOR, ON BEHALF OF, OR WITH ANY ASSETS
OF ANY SUCH PLAN, (B) IF THIS CERTIFICATE HAS BEEN THE SUBJECT OF AN
ERISA-QUALIFYING UNDERWRITING, A REPRESENTATION THAT SUCH TRANSFEREE IS AN
INSURANCE COMPANY THAT IS ACQUIRING THIS CERTIFICATE WITH ASSETS OF AN
"INSURANCE

<PAGE>

COMPANY GENERAL ACCOUNT" AS DEFINED IN SECTION V(E) OF PROHIBITED TRANSACTION
CLASS EXEMPTION ("PTCE") 95-60 AND THE ACQUISITION AND HOLDING OF THIS
CERTIFICATE ARE COVERED AND EXEMPT UNDER SECTIONS I AND III OF PTCE 95-60 OR (C)
SOLELY IN THE CASE OF A DEFINITIVE CERTIFICATE, AN OPINION OF COUNSEL
SATISFACTORY TO THE SECURITIES ADMINISTRATOR, AND UPON WHICH THE SECURITIES
ADMINISTRATOR SHALL BE ENTITLED TO RELY, TO THE EFFECT THAT THE ACQUISITION AND
HOLDING OF THIS CERTIFICATE BY THE PROSPECTIVE TRANSFEREE WILL NOT CONSTITUTE OR
RESULT IN A NONEXEMPT PROHIBITED TRANSACTION UNDER ERISA OR THE CODE, OR A
VIOLATION OF SIMILAR LAW, AND WILL NOT SUBJECT THE NIMS INSURER, THE TRUSTEE,
THE SECURITIES ADMINISTRATOR, THE MASTER SERVICER, ANY SERVICER OR THE DEPOSITOR
TO ANY OBLIGATION IN ADDITION TO THOSE UNDERTAKEN BY SUCH ENTITIES IN THE
POOLING AND SERVICING AGREEMENT, WHICH OPINION OF COUNSEL SHALL NOT BE AN
EXPENSE OF THE NIMS INSURER THE TRUSTEE, THE SECURITIES ADMINISTRATOR, THE
MASTER SERVICER, ANY SERVICER OR THE DEPOSITOR.

FOLLOWING THE INITIAL ISSUANCE OF THE CERTIFICATES, THE PRINCIPAL BALANCE OF
THIS CERTIFICATE MAY BE DIFFERENT FROM THE ORIGINAL DENOMINATION SHOWN BELOW.
ANYONE ACQUIRING THIS CERTIFICATE MAY ASCERTAIN ITS CURRENT PRINCIPAL BALANCE BY
INQUIRY OF THE SECURITIES ADMINISTRATOR.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY TO THE DEPOSITOR OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE
NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO CEDE &
CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO
ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN
INTEREST HEREIN.

IF ANY BOOK-ENTRY CERTIFICATE (OR ANY INTEREST THEREIN) IS ACQUIRED OR HELD IN
VIOLATION OF THE CERTIFICATE TRANSFER RESTRICTIONS IN THE AGREEMENT, THEN THE
LAST PRECEDING TRANSFEREE THAT IS IN COMPLIANCE WITH SUCH PROVISIONS SHALL BE
RESTORED, TO THE EXTENT PERMITTED BY LAW, TO ALL RIGHTS AND OBLIGATIONS AS
CERTIFICATE OWNER THEREOF RETROACTIVE TO THE DATE OF SUCH TRANSFER OF SUCH
CERTIFICATE. NEITHER THE TRUSTEE NOR THE SECURITIES ADMINISTRATOR SHALL BE UNDER
ANY LIABILITY TO ANY PERSON FOR MAKING ANY PAYMENTS DUE ON SUCH CERTIFICATE TO
SUCH PRECEDING TRANSFEREE.

ANY PURPORTED CERTIFICATE OWNER WHOSE ACQUISITION OR HOLDING OF ANY BOOK-ENTRY
CERTIFICATE (OR INTEREST THEREIN) WAS EFFECTED

                                     A-1-2

<PAGE>

IN VIOLATION OF THE CERTIFICATE TRANSFER RESTRICTIONS IN THE AGREEMENT SHALL
INDEMNIFY AND HOLD HARMLESS THE DEPOSITOR, THE TRUSTEE, THE SECURITIES
ADMINISTRATOR, THE MASTER SERVICER AND THE TRUST FUND FROM AND AGAINST ANY AND
ALL LIABILITIES, CLAIMS, COSTS OR EXPENSES INCURRED BY SUCH PARTIES AS A RESULT
OF SUCH ACQUISITION OR HOLDING.

                                     A-1-3

<PAGE>

<TABLE>
<S>                                         <C>
MANA Series 2007-OAR4, Class [A-__][M-__]   Aggregate Certificate Principal
                                            Balance of the Class [A-__][M-__]
                                            Certificates as of the Issue Date:
                                            $[___________]

Pass-Through Rate: Variable(1)              Initial Certificate Principal
                                            Balance of this Class [A-__][M-__]
                                            Certificate as of the Issue Date:
                                            $[___________]

Date of Agreement and Cut-off Date:         Master Servicer and Securities
July 1, 2007                                Administrator: Wells Fargo Bank,
                                            N.A.

First Distribution Date: August 25, 2007    Trustee: HSBC Bank USA, National
                                            Association

No. 07-OAR4-[A-__][M-__]-[__]               Issue Date: [___________]

                                            CUSIP: [___________]
</TABLE>

     DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE OF THIS
     CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN. ACCORDINGLY, THE
     OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF AT ANY TIME MAY BE LESS
     THAN THE AMOUNT SHOWN ABOVE AS THE DENOMINATION OF THIS CERTIFICATE.

                        MORTGAGE PASS-THROUGH CERTIFICATE

                              MANA SERIES 2007-OAR4

          evidencing a beneficial ownership interest in a Trust Fund (the "Trust
Fund") consisting primarily of a pool of conventional, adjustable-rate, hybrid
option, alt-A, negative amortization mortgage loans secured by first liens on
one- to four-family residential properties (the "Mortgage Loans") formed and
sold by

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.

     THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN MERRILL
     LYNCH MORTGAGE INVESTORS, INC., THE MASTER SERVICER, THE SECURITIES
     ADMINISTRATOR, THE TRUSTEE OR ANY OF THEIR RESPECTIVE AFFILIATES. NEITHER
     THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY
     AGENCY OR INSTRUMENTALITY OF THE UNITED STATES.

          This certifies that CEDE & CO. is the registered owner of a Percentage
Interest obtained by dividing the denomination of this Certificate by the
aggregate Certificate Principal

----------
(1)  As described in the Agreement referenced herein.

                                     A-1-4

<PAGE>

Balance of the Class [A-_][M-_] Certificates as of the Issue Date in that
certain beneficial ownership interest evidenced by all the Class [A-_][M-_]
Certificates in the Trust Fund created pursuant to a Pooling and Servicing
Agreement, dated as specified above (the "Agreement"), among Merrill Lynch
Mortgage Investors, Inc., as depositor (hereinafter called the "Depositor,"
which term includes any successor entity under the Agreement), Wells Fargo Bank,
N.A., as master servicer (in such capacity, the "Master Servicer") and
securities administrator (in such capacity, the "Securities Administrator"), and
HSBC Bank USA, National Association, as trustee (the "Trustee"), a summary of
certain of the pertinent provisions of which is set forth hereafter. 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.

          Interest on this Certificate will accrue during the period specified
in the Agreement on the Certificate Principal Balance hereof at a per annum rate
equal to the variable Pass-Through Rate described in the Agreement.

          Pursuant to the terms of the Agreement, distributions 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 (each, a "Distribution Date"), commencing on
the First Distribution Date specified above, to the Person in whose name this
Certificate is registered on the 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 the Holders of Class [A-_][M-_] Certificates on such
Distribution Date pursuant to the Agreement.

          All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and is the registered owner of Class
[A-_][M-_] Certificates, or otherwise by check mailed by first class mail to the
address of the Person entitled thereto, as such name and address shall appear on
the Certificate Register. Notwithstanding the above, the final distribution on
this Certificate will be made after due notice by the Securities Administrator
of the pendency of such distribution and only upon the presentation and
surrender of this Certificate at the office or agency appointed by the
Securities Administrator for that purpose as provided in the Agreement.

          If any Book-Entry Certificate (or any interest therein) is acquired or
held in violation of the certificate transfer restrictions in the Agreement,
then the last preceding Transferee that is in compliance with such provisions
shall be restored, to the extent permitted by law, to all rights and obligations
as Certificate Owner thereof retroactive to the date of such Transfer of such
Certificate. Neither the Trustee nor the Securities Administrator shall be under
any liability to any Person for making any payments due on such Certificate to
such preceding Transferee.

          Any purported Certificate Owner whose acquisition or holding of any
Book-Entry Certificate (or interest therein) was effected in violation of the
certificate transfer restrictions in the Agreement shall indemnify and hold
harmless the Depositor, the Trustee, the Securities

                                     A-1-5

<PAGE>

Administrator, the Master Servicer and the Trust Fund from and against any and
all liabilities, claims, costs or expenses incurred by such parties as a result
of such acquisition or holding.

          This Certificate is one of a duly authorized issue of Certificates
designated as Mortgage Pass-Through Certificates of the Series specified on the
face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

          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 Master Servicer Collection Account and the
Distribution Account may be made from time to time for purposes other than
distributions to Holders of the Certificates, such purposes including
reimbursement of advances made, or certain expenses incurred, with respect to
the Mortgage Loans.

          The Agreement permits, with certain exceptions and conditions provided
therein, the amendment thereof and the modification of the rights and
obligations of the Depositor, the Securities Administrator, the Master Servicer
and the Trustee and the rights of the Holders of the Certificates under the
Agreement at any time by the Depositor, the Securities Administrator, the Master
Servicer and the Trustee; provided however, the consent of the Certificate
Holders and the NIMs Insurer may be required for such amendment as set forth in
the Agreement.

          As provided in the Agreement and subject to certain limitations set
forth therein, the transfer of this Certificate is registrable in the
Certificate Register upon surrender of this Certificate for registration of
transfer at the offices or agencies appointed by the Securities Administrator as
provided in the Agreement, duly endorsed by, or accompanied by an assignment in
the form below or other written instrument of transfer in form satisfactory to
the Securities Administrator 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 evidencing the same aggregate
Percentage Interest will be issued to the designated transferee or transferees.

          The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations set forth therein, Certificates are exchangeable for new
Certificates of the same Class in authorized denominations 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 of Certificates, but the Securities Administrator may require
payment of a sum sufficient to cover any tax or other governmental charge that
may be imposed in connection with any transfer or exchange of Certificates.

          The Depositor, the Securities Administrator, the Master Servicer and
the Trustee and any agent of the Depositor, the Securities Administrator, the
Master Servicer or the Trustee may treat the Person in whose name this
Certificate is registered as the owner hereof for all

                                     A-1-6

<PAGE>

purposes, and none of the Depositor, the Securities Administrator, the Master
Servicer, the Trustee or any such agent shall be affected by notice to the
contrary.

          This certificate shall be governed by and construed in accordance with
the laws of the state of New York.

          The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment (or provision for payment) to the Holders
of the Certificates of all amounts held by the Securities Administrator and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the Distribution Date on which the Certificate Principal Balance of each
Class of Certificates has been reduced to zero, (ii) the final payment (or any
advance with respect thereto) on or other liquidation of the last Mortgage Loan
remaining in the Trust Fund and (iii) the Optional Termination of the trust fund
according to the procedures described in the Agreement.

          The recitals contained herein shall be taken as statements of the
Depositor and the Securities Administrator assumes no responsibility for their
correctness.

          Unless the certificate of authentication hereon has been executed by
the Securities Administrator, by manual signature, this Certificate shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

                                     A-1-7

<PAGE>

     IN WITNESS WHEREOF, the Securities Administrator has caused this
Certificate to be duly executed.

                                        WELLS FARGO BANK, N.A.,
                                          as Securities Administrator

                                        By:
                                            ------------------------------------
                                            AUTHORIZED SIGNATORY

                                        Dated: [___________]

              SECURITIES ADMINISTRATOR'S CERTIFICATE AUTHENTICATION

This is one of the Certificates referred to in the within-mentioned Pooling and
Servicing Agreement.

                                        WELLS FARGO BANK, N.A.,
                                          as Authenticating Agent

                                        By:
                                            ------------------------------------
                                            AUTHORIZED SIGNATORY

                                        Dated: [___________]

                                     A-1-8

<PAGE>

                                  ABBREVIATIONS

     The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>         <C>                            <C>                   <C>
TEN COM -   as tenants in common           UNIF GIFT MIN ACT -        CUSTODIAN

TEN ENT -   as tenants by the entireties                            (Cust) (Minor)
                                                                 under Uniform Gifts
                                                                    to Minors Act

JT TEN -    as joint tenants with right                             ______________
            of survivorship and not as                                 (State)
            tenants in common
</TABLE>

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

     FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________________________________________________
_______________________________________________________________________________.
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

          the Percentage Interest evidenced by the Mortgage Pass-Through
Certificate and hereby authorize(s) the registration of transfer of such
interest to assignee on the Certificate Register of the Trust Fund.

     I (we) further direct the Securities Administrator to issue a new
Certificate of a like Percentage Interest and Class to the above named assignee
and deliver such Certificate to the following address:
________________________________________________________________________________
_______________________________________________________________________________.

Dated:
       ---------------------

                                        -------------------------------------
                                        Signature by or on behalf of assignor

                                        -------------------------------------
                                        Signature Guaranteed

                                     A-1-9

<PAGE>

                            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.

                                     A-1-10

<PAGE>

                                   EXHIBIT A-2

                          FORM OF CLASS B CERTIFICATES

SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS 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.

THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN THE
DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER OR THE SECURITIES ADMINISTRATOR
REFERRED TO BELOW OR ANY OF THEIR AFFILIATES. NONE OF THIS CERTIFICATE, THE
REMIC REGULAR INTEREST REPRESENTED HEREBY OR THE UNDERLYING MORTGAGE LOANS ARE
GUARANTEED OR INSURED BY THE DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER, THE
SECURITIES ADMINISTRATOR OR BY ANY OF THEIR AFFILIATES OR BY ANY GOVERNMENTAL
AGENCY OR INSTRUMENTALITY.

NO TRANSFER OF THIS CERTIFICATE SHALL BE REGISTERED UNLESS THE PROSPECTIVE
TRANSFEREE PROVIDES THE SECURITIES ADMINISTRATOR AND THE DEPOSITOR WITH (A) A
REPRESENTATION THAT SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT PLAN SUBJECT TO
TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED
("ERISA"), A PLAN SUBJECT TO SECTION 4975 OF THE CODE OR A PLAN SUBJECT TO ANY
STATE, LOCAL, FEDERAL, NON-U.S. OR OTHER LAW SUBSTANTIVELY SIMILAR TO THE
FOREGOING PROVISIONS OF ERISA OR THE CODE ("SIMILAR LAW"), AND IS NOT DIRECTLY
OR INDIRECTLY ACQUIRING THIS CERTIFICATE FOR, ON BEHALF OF, OR WITH ANY ASSETS
OF ANY SUCH PLAN, (B) IF THE CERTIFICATE HAS BEEN THE SUBJECT OF AN
ERISA-QUALIFYING UNDERWRITING, A REPRESENTATION THAT SUCH TRANSFEREE IS AN
INSURANCE COMPANY THAT IS ACQUIRING THE CERTIFICATE WITH ASSETS OF AN "INSURANCE
COMPANY GENERAL ACCOUNT" AS DEFINED IN SECTION V(E) OF PROHIBITED TRANSACTION
CLASS EXEMPTION ("PTCE") 95-60 AND THE ACQUISITION AND HOLDING OF THE
CERTIFICATE ARE COVERED AND EXEMPT UNDER SECTIONS I AND III OF PTCE 95-60 OR (C)
SOLELY IN THE CASE OF A DEFINITIVE CERTIFICATE, AN OPINION OF COUNSEL
SATISFACTORY TO THE SECURITIES ADMINISTRATOR, AND UPON WHICH THE SECURITIES
ADMINISTRATOR SHALL BE ENTITLED TO RELY, TO THE EFFECT THAT THE ACQUISITION AND
HOLDING OF SUCH CERTIFICATE BY THE PROSPECTIVE TRANSFEREE WILL NOT CONSTITUTE OR
RESULT IN A NONEXEMPT PROHIBITED TRANSACTION UNDER ERISA OR THE CODE OR A
VIOLATION OF SIMILAR LAW AND WILL NOT SUBJECT THE NIMS INSURER, THE SECURITIES
ADMINISTRATOR, THE TRUSTEE, THE SERVICERS, THE MASTER SERVICER OR THE DEPOSITOR
TO ANY OBLIGATION IN ADDITION TO THOSE UNDERTAKEN BY SUCH ENTITIES

                                     A-2-1

<PAGE>

IN THE AGREEMENT, WHICH OPINION OF COUNSEL SHALL NOT BE AN EXPENSE OF THE NIMS
INSURER, THE SECURITIES ADMINISTRATOR, THE TRUSTEE, THE SERVICERS, THE MASTER
SERVICER OR THE DEPOSITOR.

FOLLOWING THE INITIAL ISSUANCE OF THE CERTIFICATES, THE PRINCIPAL BALANCE OF
THIS CERTIFICATE MAY BE DIFFERENT FROM THE ORIGINAL DENOMINATION SHOWN BELOW.
ANYONE ACQUIRING THIS CERTIFICATE MAY ASCERTAIN ITS CURRENT PRINCIPAL BALANCE BY
INQUIRY OF THE SECURITIES ADMINISTRATOR.

THIS CERTIFICATE IS SUBORDINATE TO THE SENIOR CERTIFICATES AND THE RESIDUAL
CERTIFICATES TO THE EXTENT DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY TO THE DEPOSITOR OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE
NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO CEDE &
CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO
ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN
INTEREST HEREIN.

IF ANY BOOK-ENTRY CERTIFICATE (OR ANY INTEREST THEREIN) IS ACQUIRED OR HELD IN
VIOLATION OF THE CERTIFICATE TRANSFER RESTRICTIONS IN THE AGREEMENT, THEN THE
LAST PRECEDING TRANSFEREE THAT IS IN COMPLIANCE WITH SUCH PROVISIONS SHALL BE
RESTORED, TO THE EXTENT PERMITTED BY LAW, TO ALL RIGHTS AND OBLIGATIONS AS
CERTIFICATE OWNER THEREOF RETROACTIVE TO THE DATE OF SUCH TRANSFER OF SUCH
CERTIFICATE. NEITHER THE TRUSTEE NOR THE SECURITIES ADMINISTRATOR SHALL BE UNDER
ANY LIABILITY TO ANY PERSON FOR MAKING ANY PAYMENTS DUE ON SUCH CERTIFICATE TO
SUCH PRECEDING TRANSFEREE.

ANY PURPORTED CERTIFICATE OWNER WHOSE ACQUISITION OR HOLDING OF ANY BOOK-ENTRY
CERTIFICATE (OR INTEREST THEREIN) WAS EFFECTED IN VIOLATION OF THE CERTIFICATE
TRANSFER RESTRICTIONS IN THE AGREEMENT SHALL INDEMNIFY AND HOLD HARMLESS THE
DEPOSITOR, THE TRUSTEE, THE SECURITIES ADMINISTRATOR, THE MASTER SERVICER AND
THE TRUST FUND FROM AND AGAINST ANY AND ALL LIABILITIES, CLAIMS, COSTS OR
EXPENSES INCURRED BY SUCH PARTIES AS A RESULT OF SUCH ACQUISITION OR HOLDING.

                                     A-2-2

<PAGE>

MANA Series 2007-OAR4, Class [B-__]         Aggregate Certificate Principal
                                            Balance of the Class [B-_]
                                            Certificates as of the Issue Date:
                                            $[_________]

Pass-Through Rate: Variable(1)              Initial Certificate Principal
                                            Balance of this Class [B-_]
                                            Certificate  as of the Issue Date:
                                            $[_________]

Date of Agreement and Cut-off Date:         Master Servicer and Securities
July 1, 2007                                Administrator: Wells Fargo Bank,
                                            N.A.

First Distribution Date:  August 25, 2007   Trustee: HSBC Bank USA, National
                                            Association

No. 07-OAR4-[B-__]-[__]                     Issue Date: [_________]

                                            CUSIP: [_________]

     DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE OF THIS
     CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN. ACCORDINGLY, THE
     OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF AT ANY TIME MAY BE LESS
     THAN THE AMOUNT SHOWN ABOVE AS THE DENOMINATION OF THIS CERTIFICATE.

                        MORTGAGE PASS-THROUGH CERTIFICATE

                              MANA SERIES 2007-OAR4

          evidencing a beneficial ownership interest in a Trust Fund (the "Trust
Fund") consisting primarily of a pool of conventional, adjustable-rate, hybrid
option, alt-A, negative amortization mortgage loans secured by first liens on
one- to four-family residential properties (the "Mortgage Loans") formed and
sold by

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.

          THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN
          MERRILL LYNCH MORTGAGE INVESTORS, INC., THE MASTER SERVICER, THE
          SECURITIES ADMINISTRATOR, THE TRUSTEE OR ANY OF THEIR RESPECTIVE
          AFFILIATES. NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS
          ARE GUARANTEED BY ANY AGENCY OR INSTRUMENTALITY OF THE UNITED STATES.

----------
(1)  As described in the Agreement referenced herein.

                                     A-2-3

<PAGE>

          This certifies that CEDE & CO. is the registered owner of a Percentage
Interest obtained by dividing the denomination of this Certificate by the
aggregate Certificate Principal Balance of the Class [B-__] Certificates as of
the Issue Date in that certain beneficial ownership interest evidenced by all
the Class [B-__] Certificates in the Trust Fund created pursuant to a Pooling
and Servicing Agreement, dated as specified above (the "Agreement"), among
Merrill Lynch Mortgage Investors, Inc., as depositor (hereinafter called the
"Depositor," which term includes any successor entity under the Agreement),
Wells Fargo Bank, N.A., as master servicer (in such capacity, the "Master
Servicer") and securities administrator (in such capacity, the "Securities
Administrator") and HSBC Bank USA, National Association, as trustee (the
"Trustee"). A summary of certain of the pertinent provisions of the Agreement
relating to the Trust Fund is set forth hereafter. 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.

          Interest on this Certificate will accrue during the period specified
in the Agreement on the Certificate Principal Balance hereof at a per annum rate
equal to the variable Pass-Through Rate described in the Agreement.

          Pursuant to the terms of the Agreement, distributions 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 (each, a "Distribution Date"), commencing on
the First Distribution Date specified above, to the Person in whose name this
Certificate is registered on the 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 the Holders of Class [B-_] Certificates on such
Distribution Date pursuant to the Agreement.

          All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and is the registered owner of Class
[B- ] Certificates, or otherwise by check mailed by first class mail to the
address of the Person entitled thereto, as such name and address shall appear on
the Certificate Register. Notwithstanding the above, the final distribution on
this Certificate will be made after due notice by the Securities Administrator
of the pendency of such distribution and only upon the presentation and
surrender of this Certificate at the office or agency appointed by the
Securities Administrator for that purpose as provided in the Agreement.

          If any Book-Entry Certificate (or any interest therein) is acquired or
held in violation of the certificate transfer restrictions in the Agreement,
then the last preceding Transferee that is in compliance with such provisions
shall be restored, to the extent permitted by law, to all rights and obligations
as Certificate Owner thereof retroactive to the date of such Transfer of such
Certificate. Neither the Trustee nor the Securities Administrator shall be under
any liability to any Person for making any payments due on such Certificate to
such preceding Transferee.

                                     A-2-4

<PAGE>

          Any purported Certificate Owner whose acquisition or holding of any
Book-Entry Certificate (or interest therein) was effected in violation of the
certificate transfer restrictions in the Agreement shall indemnify and hold
harmless the Depositor, the Trustee, the Securities Administrator, the Master
Servicer and the Trust Fund from and against any and all liabilities, claims,
costs or expenses incurred by such parties as a result of such acquisition or
holding.

          This Certificate is one of a duly authorized issue of Certificates
designated as Mortgage Pass-Through Certificates of the Series specified on the
face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

          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 Master Servicer Collection Account and the
Distribution Account may be made from time to time for purposes other than
distributions to Holders of the Certificates, such purposes including
reimbursement of advances made, or certain expenses incurred, with respect to
the Mortgage Loans.

          The Agreement permits, with certain exceptions and conditions provided
therein, the amendment thereof and the modification of the rights and
obligations of the Depositor, the Securities Administrator, the Master Servicer
and the Trustee and the rights of the Holders of the Certificates under the
Agreement at any time by the Depositor, the Securities Administrator, the Master
Servicer and the Trustee, provided however, the consent of the Certificate
holders and the NIMs Insurer may be required for such amendment as set forth in
the Agreement.

          As provided in the Agreement and subject to certain limitations set
forth therein, the transfer of this Certificate is registrable in the
Certificate Register upon surrender of this Certificate for registration of
transfer at the offices or agencies appointed by the Securities Administrator as
provided in the Agreement, duly endorsed by, or accompanied by an assignment in
the form below or other written instrument of transfer in form satisfactory to
the Securities Administrator 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 evidencing the same aggregate
Percentage Interest will be issued to the designated transferee or transferees.

          The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations set forth therein, Certificates are exchangeable for new
Certificates of the same Class in authorized denominations 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 of Certificates, but the Securities Administrator may require
payment of a sum sufficient to cover any tax or other governmental charge that
may be imposed in connection with any transfer or exchange of Certificates.

                                     A-2-5

<PAGE>

          The Depositor, the Securities Administrator, the Master Servicer and
the Trustee and any agent of the Depositor, the Securities Administrator, the
Master Servicer or the Trustee may treat the Person in whose name this
Certificate is registered as the owner hereof for all purposes, and none of the
Depositor, the Securities Administrator, the Master Servicer, the Trustee or any
such agent shall be affected by notice to the contrary.

          This certificate shall be governed by and construed in accordance with
the laws of the state of New York.

          The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment (or provision for payment) to the Holders
of the Certificates of all amounts held by the Securities Administrator and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the Distribution Date on which the Certificate Principal Balance of each
Class of Certificates has been reduced to zero, (ii) the final payment (or any
advance with respect thereto) on or other liquidation of the last Mortgage Loan
remaining in the Trust Fund and (iii) the Optional Termination of the trust fund
according to the procedures described in the Agreement.

          The recitals contained herein shall be taken as statements of the
Depositor and the Securities Administrator assumes no responsibility for their
correctness.

          Unless the certificate of authentication hereon has been executed by
the Securities Administrator, by manual signature, this Certificate shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

                                     A-2-6
<PAGE>

     IN WITNESS WHEREOF, the Securities Administrator has caused this
Certificate to be duly executed.

                                        WELLS FARGO BANK, N.A.,
                                           as Securities Administrator

                                        By:
                                            ------------------------------------
                                            AUTHORIZED SIGNATORY

                                        Dated: [___________]

              SECURITIES ADMINISTRATOR'S CERTIFICATE AUTHENTICATION

This is one of the Certificates referred to in the within-mentioned Pooling and
Servicing Agreement.

                                        WELLS FARGO BANK, N.A.,
                                           as Authenticating Agent

                                        By:
                                            ------------------------------------
                                            AUTHORIZED SIGNATORY

                                        Dated: [___________]

                                      A-2-7

<PAGE>

                                  ABBREVIATIONS

     The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                         <C>
TEN COM - as tenants in common              UNIF GIFT MIN ACT -        CUSTODIAN

TEN ENT - as tenants by the entireties                              (Cust) (Minor)

                                                                under Uniform Gifts to
                                                                      Minors Act

JT TEN -  as joint tenants with right of                            ______________
          survivorship and not as tenants                              (State)
          in common
</TABLE>

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

     FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________________________________________________

_______________________________________________________________________________.
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

          the Percentage Interest evidenced by the Mortgage Pass-Through
Certificate and hereby authorize(s) the registration of transfer of such
interest to assignee on the Certificate Register of the Trust Fund.

     I (we) further direct the Securities Administrator to issue a new
Certificate of a like Percentage Interest and Class to the above named assignee
and deliver such Certificate to the following address:

________________________________________________________________________________

_______________________________________________________________________________.

Dated: ______________

                                           -------------------------------------
                                           Signature by or on behalf of assignor

                                           -------------------------------------
                                            Signature Guaranteed

                                     A-2-8

<PAGE>

                            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.

                                     A-2-9

<PAGE>

                                   EXHIBIT A-3

                           FORM OF CLASS R CERTIFICATE

SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS THE
"RESIDUAL INTEREST" IN ONE OR MORE "REAL ESTATE MORTGAGE INVESTMENT CONDUITS",
AS THOSE TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE
INTERNAL REVENUE CODE OF 1986, AS AMENDED.

THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN THE
DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER OR THE SECURITIES ADMINISTRATOR
REFERRED TO BELOW OR ANY OF THEIR AFFILIATES. NONE OF THIS CERTIFICATE, THE
REMIC RESIDUAL INTERESTS REPRESENTED HEREBY OR THE UNDERLYING MORTGAGE LOANS ARE
GUARANTEED OR INSURED BY THE DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER, THE
SECURITIES ADMINISTRATOR OR BY ANY OF THEIR AFFILIATES OR BY ANY GOVERNMENTAL
AGENCY OR INSTRUMENTALITY.

FOLLOWING THE INITIAL ISSUANCE OF THE CERTIFICATES, THE PRINCIPAL BALANCE OF
THIS CERTIFICATE MAY BE DIFFERENT FROM THE ORIGINAL DENOMINATION SHOWN BELOW.
ANYONE ACQUIRING THIS CERTIFICATE MAY ASCERTAIN ITS CURRENT PRINCIPAL BALANCE BY
INQUIRY OF THE SECURITIES ADMINISTRATOR.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY TO THE DEPOSITOR OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE
NAME OF MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED OR SUCH OTHER NAME AS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND
ANY PAYMENT IS MADE TO MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED, ANY
TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON
IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, MERRILL LYNCH, PIERCE, FENNER &
SMITH INCORPORATED, HAS AN INTEREST HEREIN.

NO TRANSFER OF THIS CERTIFICATE SHALL BE REGISTERED UNLESS THE PROSPECTIVE
TRANSFEREE PROVIDES THE SECURITIES ADMINISTRATOR AND THE DEPOSITOR WITH A
REPRESENTATION THAT SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT PLAN SUBJECT TO
TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED
("ERISA"), A PLAN SUBJECT TO SECTION 4975 OF THE CODE OR A PLAN SUBJECT TO ANY
FEDERAL, STATE, LOCAL, NON-U.S. OR OTHER LAWS OR REGULATIONS THAT ARE
SUBSTANTIVELY SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR THE CODE, AND IS
NOT DIRECTLY OR INDIRECTLY ACQUIRING THIS CERTIFICATE FOR, ON BEHALF OF, OR WITH
ANY ASSETS OF ANY SUCH PLAN. ANY RESALE, TRANSFER OR OTHER DISPOSITION OF THIS

                                     A-3-1

<PAGE>

CERTIFICATE MAY BE MADE ONLY IN ACCORDANCE WITH THE CERTIFICATE TRANSFER
RESTRICTIONS IN THE AGREEMENT REFERRED TO HEREIN.

IF ANY BOOK-ENTRY CERTIFICATE (OR ANY INTEREST THEREIN) IS ACQUIRED OR HELD IN
VIOLATION OF THE CERTIFICATE TRANSFER RESTRICTIONS IN THE AGREEMENT, THEN THE
LAST PRECEDING TRANSFEREE THAT IS IN COMPLIANCE WITH SUCH PROVISIONS SHALL BE
RESTORED, TO THE EXTENT PERMITTED BY LAW, TO ALL RIGHTS AND OBLIGATIONS AS
CERTIFICATE OWNER THEREOF RETROACTIVE TO THE DATE OF SUCH TRANSFER OF SUCH
CERTIFICATE. NEITHER THE TRUSTEE NOR THE SECURITIES ADMINISTRATOR SHALL BE UNDER
ANY LIABILITY TO ANY PERSON FOR MAKING ANY PAYMENTS DUE ON SUCH CERTIFICATE TO
SUCH PRECEDING TRANSFEREE.

ANY PURPORTED CERTIFICATE OWNER WHOSE ACQUISITION OR HOLDING OF ANY BOOK-ENTRY
CERTIFICATE (OR INTEREST THEREIN) WAS EFFECTED IN VIOLATION OF THE CERTIFICATE
TRANSFER RESTRICTIONS IN THE AGREEMENT SHALL INDEMNIFY AND HOLD HARMLESS THE
DEPOSITOR, THE TRUSTEE, THE SECURITIES ADMINISTRATOR, THE MASTER SERVICER AND
THE TRUST FUND FROM AND AGAINST ANY AND ALL LIABILITIES, CLAIMS, COSTS OR
EXPENSES INCURRED BY SUCH PARTIES AS A RESULT OF SUCH ACQUISITION OR HOLDING.

                                     A-3-2

<PAGE>

<TABLE>
<S>                                   <C>
MANA Series 2007-OAR4, Class R        Aggregate Certificate Principal Balance of
                                      the Class R Certificates as of the Issue
                                      Date: $[____________]

Pass-Through Rate: Variable(1)        Initial Certificate Principal Balance of
                                      this Class R Certificate as of the Issue
                                      Date: $[____________]

Date of Agreement and Cut-off Date:   Master Servicer and Securities
July 1, 2007                          Administrator:
                                      Wells Fargo Bank, N.A.

First Distribution Date:              Trustee: HSBC Bank USA,
August 25, 2007                       National Association

No. 07-OAR4-R-[__]                    Issue Date: [____________]

                                      CUSIP: [____________]
</TABLE>

     DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE OF THIS
     CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN. ACCORDINGLY, THE
     OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF AT ANY TIME MAY BE LESS
     THAN THE AMOUNT SHOWN ABOVE AS THE DENOMINATION OF THIS CERTIFICATE.

                        MORTGAGE PASS-THROUGH CERTIFICATE

                              MANA SERIES 2007-OAR4

          evidencing a beneficial ownership interest in a Trust Fund (the "Trust
Fund") consisting primarily of a pool of conventional, adjustable-rate, hybrid
option, alt-A, negative amortization mortgage loans secured by first liens on
one- to four-family residential properties (the "Mortgage Loans") formed and
sold by

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.

     THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN MERRILL
     LYNCH MORTGAGE INVESTORS, INC., THE MASTER SERVICER, THE SECURITIES
     ADMINISTRATOR, THE TRUSTEE OR ANY OF THEIR RESPECTIVE AFFILIATES. NEITHER
     THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY
     AGENCY OR INSTRUMENTALITY OF THE UNITED STATES.

----------
(1)  As described in the Agreement referenced herein.

                                     A-3-3

<PAGE>

          This certifies that MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
is the registered owner of a Percentage Interest obtained by dividing the
denomination of this Certificate by the aggregate Certificate Principal Balance
of the Class R Certificates as of the Issue Date in that certain beneficial
ownership interest evidenced by all the Class R Certificates in the Trust Fund
created pursuant to a Pooling and Servicing Agreement, dated as specified above
(the "Agreement"), among Merrill Lynch Mortgage Investors, Inc., as depositor
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement), Wells Fargo Bank, N.A., as master servicer (in such
capacity, the "Master Servicer") and securities administrator (in such capacity,
the "Securities Administrator") and HSBC Bank USA, National Association, as
trustee (the "Trustee"). A summary of certain of the pertinent provisions of the
Agreement relating to the Trust Fund is set forth hereafter. 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.

          Interest on this Certificate will accrue during the period specified
in the Agreement on the Certificate Principal Balance hereof at a per annum rate
equal to the variable Pass-Through Rate described in the Agreement.

          Pursuant to the terms of the Agreement, distributions 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 (each, a "Distribution Date"), commencing on
the First Distribution Date specified above, to the Person in whose name this
Certificate is registered on the 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 the Holders of Class R Certificates on such Distribution
Date pursuant to the Agreement.

          All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and is the registered owner of Class
R Certificates, or otherwise by check mailed by first class mail to the address
of the Person entitled thereto, as such name and address shall appear on the
Certificate Register. Notwithstanding the above, the final distribution on this
Certificate will be made after due notice by the Securities Administrator of the
pendency of such distribution and only upon the presentation and surrender of
this Certificate at the office or agency appointed by the Securities
Administrator for that purpose as provided in the Agreement.

          If any Book-Entry Certificate (or any interest therein) is acquired or
held in violation of the certificate transfer restrictions in the Agreement,
then the last preceding Transferee that is in compliance with such provisions
shall be restored, to the extent permitted by law, to all rights and obligations
as Certificate Owner thereof retroactive to the date of such Transfer of such
Certificate. Neither the Trustee nor the Securities Administrator shall be under
any liability to any Person for making any payments due on such Certificate to
such preceding Transferee.

                                     A-3-4

<PAGE>

          Any purported Certificate Owner whose acquisition or holding of any
Book-Entry Certificate (or interest therein) was effected in violation of the
certificate transfer restrictions in the Agreement shall indemnify and hold
harmless the Depositor, the Trustee, the Securities Administrator, the Master
Servicer and the Trust Fund from and against any and all liabilities, claims,
costs or expenses incurred by such parties as a result of such acquisition or
holding.

          This Certificate is one of a duly authorized issue of Certificates
designated as Mortgage Pass-Through Certificates of the Series specified on the
face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

          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 Master Servicer Collection Account and the
Distribution Account may be made from time to time for purposes other than
distributions to Holders of the Certificates, such purposes including
reimbursement of advances made, or certain expenses incurred, with respect to
the Mortgage Loans.

          The Agreement permits, with certain exceptions and conditions provided
therein, the amendment thereof and the modification of the rights and
obligations of the Depositor, the Securities Administrator, the Master Servicer
and the Trustee and the rights of the Holders of the Certificates under the
Agreement at any time by the Depositor, the Securities Administrator, the Master
Servicer and the Trustee; provided however, the consent of the Certificate
Holders and the NIMs Insurer may be required for such amendment as set forth in
the Agreement.

          As provided in the Agreement and subject to certain limitations set
forth therein, the transfer of this Certificate is registrable in the
Certificate Register upon surrender of this Certificate for registration of
transfer at the offices or agencies appointed by the Securities Administrator as
provided in the Agreement, duly endorsed by, or accompanied by an assignment in
the form below or other written instrument of transfer in form satisfactory to
the Securities Administrator 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 evidencing the same aggregate
Percentage Interest will be issued to the designated transferee or transferees.

          The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations set forth therein, Certificates are exchangeable for new
Certificates of the same Class in authorized denominations 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 of Certificates, but the Securities Administrator may require
payment of a sum sufficient to cover any tax or other governmental charge that
may be imposed in connection with any transfer or exchange of Certificates.

          The Depositor, the Securities Administrator, the Master Servicer and
the Trustee and any agent of the Depositor, the Securities Administrator, the
Master Servicer or the Trustee

                                     A-3-5

<PAGE>

may treat the Person in whose name this Certificate is registered as the owner
hereof for all purposes, and none of the Depositor, the Securities
Administrator, the Master Servicer, the Trustee or any such agent shall be
affected by notice to the contrary.

          This certificate shall be governed by and construed in accordance with
the laws of the state of New York.

          The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment (or provision for payment) to the Holders
of the Certificates of all amounts held by the Securities Administrator and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the Distribution Date on which the Certificate Principal Balance of each
Class of Certificates has been reduced to zero, (ii) the final payment (or any
advance with respect thereto) on or other liquidation of the last Mortgage Loan
remaining in the Trust Fund and (iii) the Optional Termination of the trust fund
according to the procedures described in the Agreement.

          The recitals contained herein shall be taken as statements of the
Depositor and the Securities Administrator assumes no responsibility for their
correctness.

          Unless the certificate of authentication hereon has been executed by
the Securities Administrator, by manual signature, this Certificate shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

                                     A-3-6

<PAGE>

     IN WITNESS WHEREOF, the Securities Administrator has caused this
Certificate to be duly executed.

                                      WELLS FARGO BANK, N.A.,
                                         as Securities Administrator

                                      By:
                                          --------------------------------------
                                          AUTHORIZED SIGNATORY

                                      Dated: [____________]

              SECURITIES ADMINISTRATOR'S CERTIFICATE AUTHENTICATION

This is one of the Certificates referred to in the within-mentioned Pooling and
Servicing Agreement.

                                      WELLS FARGO BANK, N.A.,
                                         as Authenticating Agent

                                      By:
                                          --------------------------------------
                                          AUTHORIZED SIGNATORY

                                      Dated: [____________]

                                     A-3-7

<PAGE>

                                  ABBREVIATIONS

     The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                         <C>
TEN COM - as tenants in common              UNIF GIFT MIN ACT -        CUSTODIAN

TEN ENT - as tenants by the entireties                              (Cust) (Minor)

                                                                under Uniform Gifts to
                                                                      Minors Act

JT TEN -  as joint tenants with right of                            ______________
          survivorship and not as tenants                               (State)
          in common
</TABLE>

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

     FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________________________________________________

_______________________________________________________________________________.
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

          the Percentage Interest evidenced by the Mortgage Pass-Through
Certificate and hereby authorize(s) the registration of transfer of such
interest to assignee on the Certificate Register of the Trust Fund.

     I (we) further direct the Securities Administrator to issue a new
Certificate of a like Percentage Interest and Class to the above named assignee
and deliver such Certificate to the following address:

________________________________________________________________________________

_______________________________________________________________________________.

Dated: ________________

                                           -------------------------------------
                                           Signature by or on behalf of assignor

                                           -------------------------------------
                                           Signature Guaranteed

                                     A-3-8

<PAGE>

                            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.

                                     A-3-9
<PAGE>

                                   EXHIBIT A-4

                           FORM OF CLASS P CERTIFICATE

THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN THE
DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER OR THE SECURITIES ADMINISTRATOR
REFERRED TO BELOW OR ANY OF THEIR AFFILIATES. NEITHER THIS CERTIFICATE NOR THE
UNDERLYING MORTGAGE LOANS ARE GUARANTEED OR INSURED BY THE DEPOSITOR, THE
TRUSTEE, THE MASTER SERVICER, THE SECURITIES ADMINISTRATOR OR BY ANY OF THEIR
AFFILIATES OR BY ANY GOVERNMENTAL AGENCY OR INSTRUMENTALITY.

NO TRANSFER OF THIS CERTIFICATE SHALL BE REGISTERED UNLESS THE PROSPECTIVE
TRANSFEREE PROVIDES THE SECURITIES ADMINISTRATOR WITH (A) A REPRESENTATION THAT
SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT PLAN OR OTHER ARRANGEMENT SUBJECT TO
TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED
("ERISA"), A PLAN SUBJECT TO SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986,
AS AMENDED (THE "CODE") OR A PLAN SUBJECT TO ANY PROVISION UNDER ANY FEDERAL,
STATE, LOCAL, NON-U.S. OR OTHER LAWS OR REGULATIONS THAT ARE SUBSTANTIVELY
SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR THE CODE ("SIMILAR LAW")
(COLLECTIVELY, A "PLAN"), AND IS NOT DIRECTLY OR INDIRECTLY ACQUIRING THIS
CERTIFICATE FOR, ON BEHALF OF, OR WITH ANY ASSETS OF ANY SUCH PLAN, (B) IF THIS
CERTIFICATE HAS BEEN THE SUBJECT OF AN ERISA-QUALIFYING UNDERWRITING, A
REPRESENTATION THAT SUCH TRANSFEREE IS AN INSURANCE COMPANY THAT IS ACQUIRING
THIS CERTIFICATE WITH ASSETS OF AN "INSURANCE COMPANY GENERAL ACCOUNT" AS
DEFINED IN SECTION V(E) OF PROHIBITED TRANSACTION CLASS EXEMPTION ("PTCE") 95-60
AND THE ACQUISITION AND HOLDING OF THIS CERTIFICATE ARE COVERED AND EXEMPT UNDER
SECTIONS I AND III OF PTCE 95-60 OR (C) SOLELY IN THE CASE OF A DEFINITIVE
CERTIFICATE, AN OPINION OF COUNSEL SATISFACTORY TO THE SECURITIES ADMINISTRATOR,
AND UPON WHICH THE SECURITIES ADMINISTRATOR SHALL BE ENTITLED TO RELY, TO THE
EFFECT THAT THE ACQUISITION AND HOLDING OF THIS CERTIFICATE BY THE PROSPECTIVE
TRANSFEREE WILL NOT CONSTITUTE OR RESULT IN A NONEXEMPT PROHIBITED TRANSACTION
UNDER ERISA OR THE CODE, OR A VIOLATION OF SIMILAR LAW, AND WILL NOT SUBJECT THE
TRUSTEE, THE SECURITIES ADMINISTRATOR, THE MASTER SERVICER, ANY SERVICER OR THE
DEPOSITOR TO ANY OBLIGATION IN ADDITION TO THOSE UNDERTAKEN BY SUCH ENTITIES IN
THE POOLING AND SERVICING AGREEMENT, WHICH OPINION OF COUNSEL SHALL NOT BE AN
EXPENSE OF THE TRUSTEE, THE SECURITIES ADMINISTRATOR, THE MASTER SERVICER, ANY
SERVICER OR THE DEPOSITOR. IF THE CERTIFICATE IS NOT A DEFINITIVE CERTIFICATE,
THE TRANSFEREE IS DEEMED TO HAVE MADE THE REPRESENTATION IN (A) OR (B) ABOVE.

                                      A-4-1

<PAGE>

THIS CERTIFICATE HAS NOT BEEN AND WILL NOT BE REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED UNLESS IT IS REGISTERED PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS THAT ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER APPLICABLE STATE LAW AND IS TRANSFERRED IN ACCORDANCE WITH
THE CERTIFICATE TRANSFER RESTRICTIONS IN THE AGREEMENT.

                                      A-4-2

<PAGE>

<TABLE>
<S>                                        <C>
MANA Series 2007-OAR4, Class P             Percentage Interest: [________]%
Date of Agreement and Cut-off Date:        Master Servicer and Securities
July 1, 2007                               Administrator:
                                           Wells Fargo Bank, N.A.
First Distribution Date: August 25, 2007   Trustee:
                                           HSBC Bank USA, National Association
No. 07-OAR4-P-[__]                         Issue Date:  [________]
                                           CUSIP: [________]
</TABLE>

                        MORTGAGE PASS-THROUGH CERTIFICATE

                              MANA SERIES 2007-OAR4

     evidencing a beneficial ownership interest in a Trust Fund (the "Trust
Fund") consisting primarily of a pool of conventional, adjustable-rate, hybrid
option, alt-A, negative amortization mortgage loans secured by first liens on
one- to four-family residential properties (the "Mortgage Loans") formed and
sold by

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.

     THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN MERRILL
     LYNCH MORTGAGE INVESTORS, INC., THE MASTER SERVICER, THE SECURITIES
     ADMINISTRATOR, THE TRUSTEE OR ANY OF THEIR RESPECTIVE AFFILIATES. NEITHER
     THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY
     AGENCY OR INSTRUMENTALITY OF THE UNITED STATES.

          This certifies that Merrill Lynch, Pierce, Fenner & Smith Incorporated
(as nominee for Merrill Lynch Funding Corp.) is the registered owner of a 100%
Percentage Interest in that certain beneficial ownership interest evidenced by
all the Class P Certificates in the Trust Fund created pursuant to a Pooling and
Servicing Agreement, dated as specified above (the "Agreement"), among Merrill
Lynch Mortgage Investors, Inc., as depositor (hereinafter called the
"Depositor," which term includes any successor entity under the Agreement),
Wells Fargo Bank, N.A., as master servicer (in such capacity, the "Master
Servicer") and securities administrator (in such capacity, the "Securities
Administrator") and HSBC Bank USA, National Association, as trustee (the
"Trustee"), a summary of certain of the pertinent provisions of which is set
forth hereafter. 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-4-3

<PAGE>

          Pursuant to the terms of the Agreement, distributions 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 (each, a "Distribution Date"), commencing on
the First Distribution Date specified above, to the Person in whose name this
Certificate is registered on the 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 the Holders of Class P Certificates on such Distribution
Date pursuant to the Agreement.

          All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and is the registered owner of Class
P Certificates, or otherwise by check mailed by first class mail to the address
of the Person entitled thereto, as such name and address shall appear on the
Certificate Register. Notwithstanding the above, the final distribution on this
Certificate will be made after due notice by the Securities Administrator of the
pendency of such distribution and only upon the presentation and surrender of
this Certificate at the office or agency appointed by the Securities
Administrator for that purpose as provided in the Agreement.

          This Certificate is one of a duly authorized issue of Certificates
designated as Mortgage Pass-Through Certificates of the Series specified on the
face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof.

          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 Master Servicer Collection Account and the
Distribution Account may be made from time to time for purposes other than
distributions to Holders of the Certificates, such purposes including
reimbursement of advances made, or certain expenses incurred, with respect to
the Mortgage Loans.

          The Agreement permits, with certain exceptions and conditions provided
therein, the amendment thereof and the modification of the rights and
obligations of the Depositor, the Securities Administrator, the Master Servicer
and the Trustee and the rights of the Holders of the Certificates under the
Agreement at any time by the Depositor, the Securities Administrator, the Master
Servicer and the Trustee; provided however, the consent of the Certificate
Holders and the NIMs Insurer may be required for such amendment as set forth in
the Agreement.

          As provided in the Agreement and subject to certain limitations set
forth therein, the transfer of this Certificate is registrable in the
Certificate Register upon surrender of this Certificate for registration of
transfer at the offices or agencies appointed by the Securities Administrator as
provided in the Agreement, duly endorsed by, or accompanied by an assignment in
the form below or other written instrument of transfer in form satisfactory to
the Securities Administrator 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 evidencing the same aggregate
Percentage Interest will be issued to the designated transferee or transferees.

                                      A-4-4

<PAGE>

          The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations set forth therein, Certificates are exchangeable for new
Certificates of the same Class in authorized denominations evidencing the same
aggregate Percentage Interest, as requested by the Certificateholder
surrendering the same.

          No transfer of this Certificate shall be made unless the transfer is
made pursuant to an effective registration statement under the Securities Act of
1933, as amended (the "1933 Act"), and any applicable state securities laws or
is exempt from the registration requirements under the 1933 Act and such state
securities laws. In the event that a transfer is to be made in reliance upon an
exemption from the 1933 Act and such laws, the Certificateholder desiring to
effect such transfer and such Certificateholder's prospective transferee shall
each certify to the Securities Administrator in writing the facts surrounding
the transfer in a Transferor Representation Letter as described in the Agreement
and deliver to the Securities Administrator the other documents required by the
Agreement. Any Certificateholder desiring to effect a transfer of this
Certificate shall indemnify the Securities Administrator 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 service charge will be made for any such registration of transfer
or exchange of Certificates, but the Securities Administrator may require
payment of a sum sufficient to cover any tax or other governmental charge that
may be imposed in connection with any transfer or exchange of Certificates.

          The Depositor, the Securities Administrator, the Master Servicer and
the Trustee and any agent of the Depositor, the Securities Administrator, the
Master Servicer or the Trustee may treat the Person in whose name this
Certificate is registered as the owner hereof for all purposes, and none of the
Depositor, the Securities Administrator, the Master Servicer, the Trustee or any
such agent shall be affected by notice to the contrary.

          This certificate shall be governed by and construed in accordance with
the laws of the state of New York.

          The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment (or provision for payment) to the Holders
of the Certificates of all amounts held by the Securities Administrator and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the Distribution Date on which the Certificate Principal Balance of each
Class of Certificates has been reduced to zero, (ii) the final payment (or any
advance with respect thereto) on or other liquidation of the last Mortgage Loan
remaining in the Trust Fund and (iii) the Optional Termination of the trust fund
according to the procedures described in the Agreement.

          The recitals contained herein shall be taken as statements of the
Depositor and the Securities Administrator assumes no responsibility for their
correctness.

          Unless the certificate of authentication hereon has been executed by
the Securities Administrator, by manual signature, this Certificate shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

                                      A-4-5

<PAGE>

     IN WITNESS WHEREOF, the Securities Administrator has caused this
Certificate to be duly executed.

                                        WELLS FARGO BANK, N.A.,
                                          as Securities Administrator

                                        By:
                                            ------------------------------------
                                            AUTHORIZED SIGNATORY

                                        Dated: [________]

              SECURITIES ADMINISTRATOR'S CERTIFICATE AUTHENTICATION

          This is one of the Certificates referred to in the within-mentioned
Pooling and Servicing Agreement.

                                        WELLS FARGO BANK, N.A.,
                                          as Authenticating Agent

                                        By:
                                            ------------------------------------
                                            AUTHORIZED SIGNATORY

                                        Dated: [________]

                                      A-4-6

<PAGE>

                                  ABBREVIATIONS

     The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>         <C>                              <C>                   <C>
TEN COM -   as tenants in common             UNIF GIFT MIN ACT -          CUSTODIAN

TEN ENT -   as tenants by the entireties                               (Cust) (Minor)
                                                                   under Uniform Gifts to
                                                                         Minors Act
JT TEN -    as joint tenants with right of                             ______________
            survivorship and not as                                        (State)
            tenants in common
</TABLE>

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

     FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________________________________________________
_______________________________________________________________________________.
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

the Percentage Interest evidenced by the Mortgage Pass-Through Certificate and
hereby authorize(s) the registration of transfer of such interest to assignee on
the Certificate Register of the Trust Fund.

     I (we) further direct the Securities Administrator to issue a new
Certificate of a like Percentage Interest and Class to the above named assignee
and deliver such Certificate to the following address:
________________________________________________________________________________
_______________________________________________________________________________.

Dated: ______________

                                        ----------------------------------------
                                        Signature by or on behalf of assignor

                                        ----------------------------------------
                                        Signature Guaranteed

                                      A-4-7

<PAGE>

                            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.

                                      A-4-8
<PAGE>

                                   EXHIBIT A-5

                           FORM OF CLASS C CERTIFICATE

SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS AN INTEREST
IN A GRANTOR TRUST THAT HOLDS ONE OR MORE "REGULAR INTERESTS" 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 AND IS
TREATED AS HAVING ENTERED INTO CERTAIN NOTIONAL PRINCIPAL CONTRACTS.

THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN THE
DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER OR THE SECURITIES ADMINISTRATOR
REFERRED TO BELOW OR ANY OF THEIR AFFILIATES. NONE OF THIS CERTIFICATE, THE
REMIC REGULAR INTERESTS REPRESENTED HEREBY OR THE UNDERLYING MORTGAGE LOANS ARE
GUARANTEED OR INSURED BY THE DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER, THE
SECURITIES ADMINISTRATOR OR BY ANY OF THEIR AFFILIATES OR BY ANY GOVERNMENTAL
AGENCY OR INSTRUMENTALITY.

THIS CLASS C CERTIFICATE HAS NOT BEEN AND WILL NOT BE REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND MAY
NOT BE RESOLD OR TRANSFERRED UNLESS IT IS SOLD OR TRANSFERRED IN TRANSACTIONS
WHICH ARE EXEMPT FROM REGISTRATION UNDER SUCH ACT OR UNDER APPLICABLE STATE LAW
AND IS TRANSFERRED IN ACCORDANCE WITH THE CERTIFICATE TRANSFER RESTRICTIONS IN
THE AGREEMENT REFERRED TO HEREIN.

FOLLOWING THE INITIAL ISSUANCE OF THE CERTIFICATES, THE PRINCIPAL BALANCE OF
THIS CERTIFICATE MAY BE DIFFERENT FROM THE ORIGINAL DENOMINATION SHOWN BELOW.
ANYONE ACQUIRING THIS CERTIFICATE MAY ASCERTAIN ITS CURRENT PRINCIPAL BALANCE BY
INQUIRY OF THE SECURITIES ADMINISTRATOR.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY TO THE DEPOSITOR OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE
NAME OF MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED OR SUCH OTHER NAME AS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND
ANY PAYMENT IS MADE TO MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED, ANY
TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON
IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, MERRILL LYNCH, PIERCE, FENNER &
SMITH INCORPORATED, HAS AN INTEREST HEREIN.

                                      A-5-1

<PAGE>

NO TRANSFER OF THIS CERTIFICATE SHALL BE REGISTERED UNLESS THE PROSPECTIVE
TRANSFEREE PROVIDES THE SECURITIES ADMINISTRATOR AND THE DEPOSITOR WITH (A) A
REPRESENTATION THAT SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT PLAN SUBJECT TO
TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED
("ERISA"), A PLAN SUBJECT TO SECTION 4975 OF THE CODE OR A PLAN SUBJECT TO ANY
STATE, LOCAL, FEDERAL, NON-U.S. OR OTHER LAW SUBSTANTIVELY SIMILAR TO THE
FOREGOING PROVISIONS OF ERISA OR THE CODE ("SIMILAR LAW"), AND IS NOT DIRECTLY
OR INDIRECTLY ACQUIRING THIS CERTIFICATE FOR, ON BEHALF OF, OR WITH ANY ASSETS
OF ANY SUCH PLAN, (B) IF THE CERTIFICATE HAS BEEN THE SUBJECT OF AN
ERISA-QUALIFYING UNDERWRITING, A REPRESENTATION THAT SUCH TRANSFEREE IS AN
INSURANCE COMPANY THAT IS ACQUIRING THE CERTIFICATE WITH ASSETS OF AN "INSURANCE
COMPANY GENERAL ACCOUNT" AS DEFINED IN SECTION V(E) OF PROHIBITED TRANSACTION
CLASS EXEMPTION ("PTCE") 95-60 AND THE ACQUISITION AND HOLDING OF THE
CERTIFICATE ARE COVERED AND EXEMPT UNDER SECTIONS I AND III OF PTCE 95-60 OR (C)
SOLELY IN THE CASE OF A DEFINITIVE CERTIFICATE, AN OPINION OF COUNSEL
SATISFACTORY TO THE SECURITIES ADMINISTRATOR, AND UPON WHICH THE SECURITIES
ADMINISTRATOR SHALL BE ENTITLED TO RELY, TO THE EFFECT THAT THE ACQUISITION AND
HOLDING OF SUCH CERTIFICATE BY THE PROSPECTIVE TRANSFEREE WILL NOT CONSTITUTE OR
RESULT IN A NONEXEMPT PROHIBITED TRANSACTION UNDER ERISA OR THE CODE OR A
VIOLATION OF SIMILAR LAW AND WILL NOT SUBJECT THE NIMS INSURER, THE SECURITIES
ADMINISTRATOR, THE TRUSTEE, THE SERVICERS, THE MASTER SERVICER OR THE DEPOSITOR
TO ANY OBLIGATION IN ADDITION TO THOSE UNDERTAKEN BY SUCH ENTITIES IN THE
AGREEMENT, WHICH OPINION OF COUNSEL SHALL NOT BE AN EXPENSE OF THE NIMS INSURER,
THE SECURITIES ADMINISTRATOR, THE TRUSTEE, THE SERVICERS, THE MASTER SERVICER OR
THE DEPOSITOR.

IF ANY BOOK-ENTRY CERTIFICATE (OR ANY INTEREST THEREIN) IS ACQUIRED OR HELD IN
VIOLATION OF THE CERTIFICATE TRANSFER RESTRICTIONS IN THE AGREEMENT, THEN THE
LAST PRECEDING TRANSFEREE THAT IS IN COMPLIANCE WITH SUCH PROVISIONS SHALL BE
RESTORED, TO THE EXTENT PERMITTED BY LAW, TO ALL RIGHTS AND OBLIGATIONS AS
CERTIFICATE OWNER THEREOF RETROACTIVE TO THE DATE OF SUCH TRANSFER OF SUCH
CERTIFICATE. NEITHER THE TRUSTEE NOR THE SECURITIES ADMINISTRATOR SHALL BE UNDER
ANY LIABILITY TO ANY PERSON FOR MAKING ANY PAYMENTS DUE ON SUCH CERTIFICATE TO
SUCH PRECEDING TRANSFEREE.

ANY PURPORTED CERTIFICATE OWNER WHOSE ACQUISITION OR HOLDING OF ANY BOOK-ENTRY
CERTIFICATE (OR INTEREST THEREIN) WAS EFFECTED IN VIOLATION OF THE CERTIFICATE
TRANSFER RESTRICTIONS IN THE AGREEMENT SHALL INDEMNIFY AND HOLD HARMLESS THE
DEPOSITOR, THE

                                      A-5-2

<PAGE>

TRUSTEE, THE SECURITIES ADMINISTRATOR, THE MASTER SERVICER AND THE TRUST FUND
FROM AND AGAINST ANY AND ALL LIABILITIES, CLAIMS, COSTS OR EXPENSES INCURRED BY
SUCH PARTIES AS A RESULT OF SUCH ACQUISITION OR HOLDING.

                                      A-5-3

<PAGE>

<TABLE>
<S>                                        <C>
MANA Series 2007-OAR4, Class C             Percentage Interest: [_______]
Date of Agreement and Cut-off Date:        Master Servicer and Securities Administrator:
July 1, 2007                               Wells Fargo Bank, N.A.
First Distribution Date: August 25, 2007   Trustee: HSBC Bank USA, National Association
No. 07-OAR4-C-[__]                         Issue Date: [_______]
Pass-Through Rate:  Variable(4)            CUSIP: [_______]
</TABLE>

     DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE OF THIS
     CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN. ACCORDINGLY, THE
     OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF AT ANY TIME MAY BE LESS
     THAN THE AMOUNT SHOWN ABOVE AS THE DENOMINATION OF THIS CERTIFICATE.

                        MORTGAGE PASS-THROUGH CERTIFICATE

                              MANA SERIES 2007-OAR4

          evidencing a beneficial ownership interest in a Trust Fund (the "Trust
Fund") consisting primarily of a pool of conventional, adjustable-rate, hybrid
option, alt-A, negative amortization mortgage loans secured by first liens on
one- to four-family residential properties (the "Mortgage Loans") formed and
sold by

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.

     THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN MERRILL
     LYNCH MORTGAGE INVESTORS, INC., THE MASTER SERVICER, THE SECURITIES
     ADMINISTRATOR, THE TRUSTEE OR ANY OF THEIR RESPECTIVE AFFILIATES. NEITHER
     THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY
     AGENCY OR INSTRUMENTALITY OF THE UNITED STATES.

          This certifies that MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
is the registered owner of a Percentage Interest obtained by dividing the
denomination of this Certificate by the aggregate Certificate Principal Balance
of the Class C Certificates as of the Issue Date in that certain beneficial
ownership interest evidenced by all the Class C Certificates in the Trust Fund
created pursuant to a Pooling and Servicing Agreement,

----------
(4)  As described in the Agreement referenced herein.

                                      A-5-4
<PAGE>

dated as specified above (the "Agreement"), among Merrill Lynch Mortgage
Investors, Inc., as depositor (hereinafter called the "Depositor," which term
includes any successor entity under the Agreement), Wells Fargo Bank, N.A., as
master servicer (in such capacity, the "Master Servicer") and securities
administrator (in such capacity, the "Securities Administrator") and HSBC Bank
USA, National Association, as trustee (the "Trustee"). A summary of certain of
the pertinent provisions of the Agreement relating to the Trust Fund is set
forth hereafter. 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.

          Interest on this Certificate will accrue during the period specified
in the Agreement on the Certificate Principal Balance hereof at a per annum rate
equal to the variable Pass-Through Rate described in the Agreement.

          Pursuant to the terms of the Agreement, distributions 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 (each, a "Distribution Date"), commencing on
the First Distribution Date specified above, to the Person in whose name this
Certificate is registered on the 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 the Holders of Class C Certificates on such Distribution
Date pursuant to the Agreement.

          All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and is the registered owner of Class
C Certificates, or otherwise by check mailed by first class mail to the address
of the Person entitled thereto, as such name and address shall appear on the
Certificate Register. Notwithstanding the above, the final distribution on this
Certificate will be made after due notice by the Securities Administrator of the
pendency of such distribution and only upon the presentation and surrender of
this Certificate at the office or agency appointed by the Securities
Administrator for that purpose as provided in the Agreement.

          If any Book-Entry Certificate (or any interest therein) is acquired or
held in violation of the certificate transfer restrictions in the Agreement,
then the last preceding Transferee that is in compliance with such provisions
shall be restored, to the extent permitted by law, to all rights and obligations
as Certificate Owner thereof retroactive to the date of such Transfer of such
Certificate. Neither the Trustee nor the Securities Administrator shall be under
any liability to any Person for making any payments due on such Certificate to
such preceding Transferee.

          Any purported Certificate Owner whose acquisition or holding of any
Book-Entry Certificate (or interest therein) was effected in violation of the
certificate transfer restrictions in the Agreement shall indemnify and hold
harmless the Depositor, the Trustee, the Securities

                                      A-5-5

<PAGE>

Administrator, the Master Servicer and the Trust Fund from and against any and
all liabilities, claims, costs or expenses incurred by such parties as a result
of such acquisition or holding.

          This Certificate is one of a duly authorized issue of Certificates
designated as Mortgage Pass-Through Certificates of the Series specified on the
face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

          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 Master Servicer Collection Account and the
Distribution Account may be made from time to time for purposes other than
distributions to Holders of the Certificates, such purposes including
reimbursement of advances made, or certain expenses incurred, with respect to
the Mortgage Loans.

          The Agreement permits, with certain exceptions and conditions provided
therein, the amendment thereof and the modification of the rights and
obligations of the Depositor, the Securities Administrator, the Master Servicer
and the Trustee and the rights of the Holders of the Certificates under the
Agreement at any time by the Depositor, the Securities Administrator, the Master
Servicer and the Trustee; provided however, the consent of the Certificate
Holders and the NIMs Insurer may be required for such amendment as set forth in
the Agreement.

          As provided in the Agreement and subject to certain limitations set
forth therein, the transfer of this Certificate is registrable in the
Certificate Register upon surrender of this Certificate for registration of
transfer at the offices or agencies appointed by the Securities Administrator as
provided in the Agreement, duly endorsed by, or accompanied by an assignment in
the form below or other written instrument of transfer in form satisfactory to
the Securities Administrator 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 evidencing the same aggregate
Percentage Interest will be issued to the designated transferee or transferees.

          The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations set forth therein, Certificates are exchangeable for new
Certificates of the same Class in authorized denominations 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 of Certificates, but the Securities Administrator may require
payment of a sum sufficient to cover any tax or other governmental charge that
may be imposed in connection with any transfer or exchange of Certificates.

          The Depositor, the Securities Administrator, the Master Servicer and
the Trustee and any agent of the Depositor, the Securities Administrator, the
Master Servicer or the Trustee may treat the Person in whose name this
Certificate is registered as the owner hereof for all

                                      A-5-6

<PAGE>

purposes, and none of the Depositor, the Securities Administrator, the Master
Servicer, the Trustee or any such agent shall be affected by notice to the
contrary.

          This certificate shall be governed by and construed in accordance with
the laws of the state of New York.

          The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment (or provision for payment) to the Holders
of the Certificates of all amounts held by the Securities Administrator and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the Distribution Date on which the Certificate Principal Balance of each
Class of Certificates has been reduced to zero, (ii) the final payment (or any
advance with respect thereto) on or other liquidation of the last Mortgage Loan
remaining in the Trust Fund and (iii) the Optional Termination of the trust fund
according to the procedures described in the Agreement.

          The recitals contained herein shall be taken as statements of the
Depositor and the Securities Administrator assumes no responsibility for their
correctness.

          Unless the certificate of authentication hereon has been executed by
the Securities Administrator, by manual signature, this Certificate shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

                                      A-5-7

<PAGE>

     IN WITNESS WHEREOF, the Securities Administrator has caused this
Certificate to be duly executed.

                                        WELLS FARGO BANK, N.A.,
                                           as Securities Administrator

                                        By:
                                            ------------------------------------
                                            AUTHORIZED SIGNATORY

                                        Dated: [_______]

              SECURITIES ADMINISTRATOR'S CERTIFICATE AUTHENTICATION

This is one of the Certificates referred to in the within-mentioned Pooling and
Servicing Agreement.

                                        WELLS FARGO BANK, N.A.,
                                           as Authenticating Agent

                                        By:
                                            ------------------------------------
                                            AUTHORIZED SIGNATORY

                                        Dated: [_______]

                                      A-5-8

<PAGE>

                                  ABBREVIATIONS

     The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                        <C>
TEN COM - as tenants in common             UNIF GIFT MIN ACT -        CUSTODIAN

TEN ENT - as tenants by the entireties                             (Cust) (Minor)
                                                               under Uniform Gifts to
                                                                     Minors Act

JT TEN -  as joint tenants with right of                           ______________
          survivorship and not as                                      (State)
          tenants in common
</TABLE>

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

     FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________________________________________________

_______________________________________________________________________________.
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

          the Percentage Interest evidenced by the Mortgage Pass-Through
Certificate and hereby authorize(s) the registration of transfer of such
interest to assignee on the Certificate Register of the Trust Fund.

     I (we) further direct the Securities Administrator to issue a new
Certificate of a like Percentage Interest and Class to the above named assignee
and deliver such Certificate to the following address:

________________________________________________________________________________

_______________________________________________________________________________.

Dated: ______________

                                        ----------------------------------------
                                        Signature by or on behalf of assignor

                                        ----------------------------------------
                                        Signature Guaranteed

                                      A-5-9

<PAGE>

                            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.

                                     A-5-10

<PAGE>

                                   EXHIBIT B-1

                             MORTGAGE LOAN SCHEDULE

                             [INTENTIONALLY OMITTED]

                                      B-1-1
<PAGE>

                                    EXHIBIT C

                                   [RESERVED]

                                       C-1

<PAGE>

                                    EXHIBIT D

                        REQUEST FOR RELEASE OF DOCUMENTS

To: Wells Fargo Bank, N.A.
    1015 10th Avenue S.E.
    Minneapolis Minnesota 55414
    Attn: ______________________

     Re: Custodial Agreement, dated as of August 10, 2007 among HSBC Bank USA,
         National Association, Merrill Lynch Mortgage Investors, Inc. and Wells
         Fargo Bank, N.A.

     In connection with the administration of the Mortgage Loans held by you as
Custodian for the Owner pursuant to the above-captioned Custodial Agreement, we
request the release, and hereby acknowledge receipt, of the Custodian's Mortgage
File for the Mortgage Loan described below, for the reason indicated.

          Mortgage Loan Number:

          Mortgagor Name, Address & Zip Code:

          Reason for Requesting Documents (check one):

     [ ]  1. Mortgage Paid in full

     [ ]  2. Foreclosure

     [ ]  3. Substitution

     [ ]  4. Other Liquidation (Repurchases, etc.)

     [ ]  5. Nonliquidation             Reason:_______________________

                                        By:
                                            ------------------------------------
                                                    (authorized signer)
                                        Issuer:
                                                --------------------------------
                                        Address:
                                                 -------------------------------

                                                 -------------------------------
                                        Date:
                                              ----------------------------------

                                       D-1

<PAGE>

          Custodian

          Wells Fargo Bank, N.A.

          Please acknowledge the execution of the above request by your
signature and date below:

          Please acknowledge the execution of the above request by your
signature and date below:

----------------------------------------   ---------------
Signature                                  Date

Documents returned to Custodian:

----------------------------------------   ---------------
Custodian                                  Date

                                       D-2

<PAGE>

                                   EXHIBIT E-1

                           FORM OF TRANSFEREE'S LETTER

                                     [DATE]

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, Maryland 21045
Attention: Client Manager - MANA 2007-OAR4

          Ladies and Gentlemen:

          We propose to purchase Merrill Lynch Alternative Note Asset Trust,
Series 2007-OAR4 Mortgage Pass-Through Certificates, Class R, described in the
Prospectus Supplement, dated August 9, 2007, and the Prospectus, dated May 15,
2007. Capitalized terms used but not defined herein shall have the meanings
assigned to them in the Pooling and Servicing Agreement, dated July 1, 2007
relating to this issuance of the Merrill Lynch Alternative Note Asset Trust,
Series 2007-OAR4 Mortgage Pass-Through Certificates (the "Pooling and Servicing
Agreement").

          1. We certify that (a) we are not a disqualified organization and (b)
we are not purchasing such Class R Certificate on behalf of a disqualified
organization; for this purpose the term "disqualified organization" means the
United States, any state or political subdivision thereof, any foreign
government, any international organization, any agency or instrumentality of any
of the foregoing (except any entity treated as other than an instrumentality of
the foregoing for purposes of Section 168(h)(2)(D) of the Internal Revenue Code
of 1986, as amended (the "Code")), any organization (other than a cooperative
described in Section 521 of the Code) that is exempt from taxation under the
Code (unless such organization is subject to tax on excess inclusions) and any
organization that is described in Section 1381(a)(2)(C) of the Code. We
understand that any breach by us of this certification may cause us to be liable
for an excise tax imposed upon transfers to disqualified organizations.

          2. We certify that (a) we have historically paid our debts as they
became due, (b) we intend, and believe that we will be able, to continue to pay
our debts as they become due in the future, (c) we understand that, as
beneficial owner of the Class R Certificate, we may incur tax liabilities in
excess of any cash flows generated by the Class R Certificate, and (d) we intend
to pay any taxes associated with holding the Class R Certificate as they become
due and (e) we will not cause income from the Class R Certificate to be
attributable to a foreign permanent establishment or fixed base (within the
meaning of an applicable income tax treaty) of ours or another U.S. taxpayer.

                                      E-1-1

<PAGE>

          3. We acknowledge that we will be the beneficial owner of the Class R
Certificate and:(1)

          _______ The Class R Certificate will be registered in our name.

          _______ The Class R Certificate will be held in the name of our
                  nominee,  _________________, which is not a disqualified
                  organization.

          4. We certify that we are not an employee benefit plan subject to
Title I of the Employee Retirement Income Security Act of 1974, as amended
("ERISA"), a plan subject to Section 4975 of the Code or a plan subject to
federal, state, local, non-U.S. or other law substantively similar to the
foregoing provisions of ERISA or the Code (each, a "Plan"), and are not directly
or indirectly acquiring the Class R Certificate on behalf of or with any assets
of a Plan.

          5. We certify that (i) we are a U.S. person or (ii) we will hold the
Class R Certificate in connection with the conduct of a trade or business within
the United States and have furnished the transferor and the Securities
Administrator with a duly completed and effective Internal Revenue Service Form
W-8ECI or successor form at the time and in the manner required by the Code; for
this purpose the term "U.S. person" means a citizen or resident of the United
States, a corporation, or partnership (unless, in the case of a partnership,
Treasury regulations are adopted that provide otherwise) created or organized in
or under the laws of the United States, any State thereof or the District of
Columbia, including an entity treated as a corporation or partnership for
federal income tax purposes, an estate whose income is subject to United States
federal income tax regardless of the source of its income, or 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 such U.S. persons have the authority
to control all substantial decisions of the trust (or, to the extent provided in
applicable Treasury regulations, certain trusts in existence on August 20, 1996
which are eligible to elect to be treated as U.S. Persons. We agree that any
breach by us of this certification shall render the transfer of any interest in
the Class R Certificate to us absolutely null and void and shall cause no rights
in the Class R Certificate to vest in us.

          6. We agree that in the event that at some future time we wish to
transfer any interest in the Class R Certificate, we will transfer such interest
in the Class R Certificate only (a) to a transferee that (i) is not a
disqualified organization and is not purchasing such interest in the Class R
Certificate on behalf of a disqualified organization, (ii) is a U.S. person or
will hold the Class R Certificate in connection with the conduct of a trade or
business within the United States and will furnish us and the Securities
Administrator with a duly completed and effective Internal Revenue Service Form
W-8ECI or successor form at the time and in the manner required by the Code and
(iii) has delivered to the Securities Administrator a letter in the form of this
letter (including the affidavit appended hereto) and, we will provide the
Securities Administrator a written statement substantially in the form of
Exhibit E-2 to the Pooling and Servicing Agreement.

----------
(1)  Check appropriate box and if necessary fill in the name of the Transferee's
     nominee.

                                      E-1-2

<PAGE>

          7. We hereby designate _______________________ as our fiduciary to act
as the tax matters person for each of the REMICs provided for in the Pooling and
Servicing Agreement in which the Class R Certificate represents the residual
interest.

                                        Very truly yours,

                                        [Purchaser]

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:

Accepted as of __________ __, 200__

MERRILL LYNCH MORTGAGE INVESTORS, INC.

By:
    ----------------------------------
Name:
Title:

                                      E-1-3

<PAGE>

                                   APPENDIX A

                    Affidavit pursuant to (i) Section 860E(e)(4) of the Internal
          Revenue Code of 1986, as amended, and (ii) certain provisions of the
          Pooling and Servicing Agreement

Under penalties of perjury, the undersigned declares that the following is true:

          1.   He or she is an officer of _________________________ (the
               "Investor"),

          2.   the Investor's Employer Identification number is __________,

          3.   the Investor is not a "disqualified organization" (as defined
               below), has no plan or intention of becoming a disqualified
               organization, and is not acquiring any of its interest in the
               Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4
               Mortgage Pass-Through Certificates, Class R Certificate on behalf
               of a disqualified organization or any other entity,

          4.   unless Merrill Lynch Mortgage Investors, Inc. ("MLMI") has
               consented to the transfer to the Investor, the Investor is a
               "U.S. person" (as defined below),

          5.   that no purpose of the transfer is to avoid or impede the
               assessment or collection of tax,

          6.   the Investor has historically paid its debts as they became due,

          7.   the Investor intends, and believes that it will be able, to
               continue to pay its debts as they become due in the future,

          8.   the Investor understands that, as beneficial owner of the Class R
               Certificate, it may incur tax liabilities in excess of any cash
               flows generated by the Class R Certificate,

          9.   the Investor intends to pay any taxes associated with holding the
               Class R Certificate as they become due,

          10.  the Investor consents to any amendment of the Pooling and
               Servicing Agreement that shall be deemed necessary by MLMI (upon
               advice of counsel) to constitute a reasonable arrangement to
               ensure that the Class R Certificate will not be owned directly or
               indirectly by a disqualified organization, and

          11.  IF BRACKETED, THE FOLLOWING CERTIFICATIONS ARE INAPPLICABLE [the
               transfer is not a direct or indirect transfer of the Class R
               Certificate to a foreign permanent establishment or fixed base
               (within the meaning of an applicable income tax treaty) of the
               Investor, and as to each of the residual interests represented by
               the Class R Certificate, the present value of the anticipated tax
               liabilities associated with holding such residual interest does
               not exceed the sum of:

                                      E-1-4

<PAGE>

               A.   the present value of any consideration given to the Investor
                    to acquire such residual interest;

               B.   the present value of the expected future distributions on
                    such residual interest; and

               C.   the present value of the anticipated tax savings associated
                    with holding such residual interest as the related REMIC
                    generates losses.

          For purposes of this declaration, (i) the Investor is assumed to pay
          tax at a rate equal to the highest rate of tax specified in Section
          11(b)(1) of the Code, but the tax rate specified in Section
          55(b)(1)(B) of the Code may be used in lieu of the highest rate
          specified in Section 11(b)(1) of the Code if the Investor has been
          subject to the alternative minimum tax under Section 55 of the Code in
          the preceding two years and will compute its taxable income in the
          current taxable year using the alternative minimum tax rate, and (ii)
          present values are computed using a discount rate equal to the Federal
          short-term rate prescribed by Section 1274(d) of the Code for the
          month of the transfer and the compounding period used by the
          Investor;]

[(11) (A) at the time of the transfer, and at the close of each of the
          Investor's two fiscal years preceding the Investor's fiscal year of
          transfer, the Investor's gross assets for financial reporting purposes
          exceed $100 million and its net assets for financial reporting
          purposes exceed $10 million; and

     (B)  the Investor is an eligible corporation as defined in Treasury
          regulations Section 1.860E-1(c)(6)(i) and has agreed in writing that
          any subsequent transfer of the Class R Certificate will be to another
          eligible corporation in a transaction that satisfies Treasury
          regulation Sections 1.860E-1(c)(4)(i), 1.860E-1(c)(4)(ii),
          1.860E-1(c)(4)(iii) and 1.860E-1(c)(5) and such transfer will not be a
          direct or indirect transfer to a foreign permanent establishment
          (within the meaning of an applicable income tax treaty) of a domestic
          corporation.

For purposes of this declaration, the gross and net assets of the Investor do
not include any obligation of any related person as defined in Treasury
regulation Section 1.860E-1(c)(6)(ii) or any other asset if a principal purpose
for holding or acquiring the other asset is to permit the Investor to make this
declaration or to satisfy the requirements of Treasury regulation Section
1.860E-1(c)(5)(i).]

(12) The Investor will not cause income from the Class R Certificate to be
attributable to a foreign permanent establishment or fixed base (within the
meaning of an applicable income tax treaty) of the Investor or another U.S.
taxpayer.

                                      E-1-5

<PAGE>

For purpose of this affidavit, the term "disqualified organization" means the
United States, any state or political subdivision thereof, any foreign
government, any international organization, any agency or instrumentality of any
of the foregoing (except any entity treated as other than an instrumentality of
the foregoing for purposes of Section 168(h)(2)(D) of the Internal Revenue Code
of 1986, as amended (the "Code")), any organization (other than a cooperative
described in Section 521 of the Code) that is exempt from taxation under the
Code (unless such organization is subject to tax on excess inclusions) and any
organization that is described in Section 1381(a)(2)(C) of the Code and the term
"U.S. Person" means a citizen or resident of the United States, a corporation or
partnership (unless, in the case of a partnership, Treasury regulations are
adopted that provide otherwise) created or organized in or under the laws of the
United States, any state thereof or the District of Columbia, including an
entity treated as a corporation or partnership for federal income tax purposes,
an estate whose income is subject to Unites States federal income tax regardless
of its source, or a trust if a court within the United States is able to
exercise primary supervision over the administration of such trust, and one or
more such U.S. Persons have the authority to control all substantial decisions
of such trust, (or, to the extent provided in applicable Treasury regulations,
certain trusts in existence on August 20, 1996 which are eligible to elect to be
treated as U.S. Persons).

                                      E-1-6

<PAGE>

IN WITNESS WHEREOF, the Investor has caused this instrument to be executed on
its behalf, pursuant to authority of its Board of Directors, by its
_____________ this ___ day of ______________, 20__.

                                        [INVESTOR]

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:

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 Investor, and acknowledged to me that
he executed the same as his free act and deed and the free act and deed of the
Investor.

Subscribed and sworn before me this ___ day of ______________, 20__.

NOTARY PUBLIC

________________________________________

COUNTY OF ______________________________

STATE OF _______________________________

My commission expires the _____ day of __________ 20__.

                                      E-1-7

<PAGE>

                                   EXHIBIT E-2

                         FORM OF TRANSFEROR CERTIFICATE

                                     [DATE]

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045
Attention: Client Manager - MANA 2007-OAR4

Re: Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4

     _______________________ (the "Transferor") has reviewed the attached
affidavit of _____________________________ (the "Transferee"), and has no actual
knowledge that such affidavit is not true, and has no reason to believe that the
Transferee has the intention to impede the assessment or collection of any
federal, state or local taxes legally required to be paid with respect to the
Class R Certificate referred to in the attached affidavit. In addition, the
Transferor has conducted a reasonable investigation at the time of the transfer
and found that the Transferee had historically paid its debts as they came due
and found no significant evidence to indicate that the Transferee will not
continue to pay its debts as they become due.

                                        Very truly yours,

                                        [Transferor]

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:

                                      E-2-1

<PAGE>

                                   EXHIBIT F-1

                    FORM OF TRANSFEROR REPRESENTATION LETTER

                                                          ______________, 200___

Merrill Lynch Mortgage Investors, Inc.
4 World Financial Center
New York, New York 10281

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

     Re:  Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4 Mortgage
          Pass-Through Certificates, Class [____]

Ladies and Gentlemen:

     In connection with the sale by ___________ (the "Seller") to ________ (the
"Purchaser") of $_________ Initial Certificate Principal Balance of Mortgage
Pass-Through Certificates, Class _____ (the "Certificates"), issued pursuant to
the Pooling and Servicing Agreement (the "Pooling and Servicing Agreement"),
dated as of July 1, 2007 among Merrill Lynch Mortgage Investors, Inc., as
depositor (the "Depositor"), Wells Fargo Bank, N.A. as master servicer (in such
capacity, the "Master Servicer") and securities administrator (in such capacity,
the "Securities Administrator") and HSBC Bank USA, National Association, as
trustee (the "Trustee"). The Seller hereby certifies, represents and warrants
to, and covenants with, the Depositor and the Securities Administrator that:

     Neither the Seller nor anyone acting on its behalf has (a) offered,
pledged, sold, disposed of or otherwise transferred any Certificate, any
interest in any Certificate or any other similar security to any person in any
manner, (b) has solicited any offer to buy or to accept a pledge, disposition or
other transfer of any Certificate, any interest in any Certificate or any other
similar security from any person in any manner, (c) has otherwise approached or
negotiated with respect to any Certificate, any interest in any Certificate or
any other similar security with any person in any manner, (d) has made any
general solicitation by means of general advertising or in any other manner, or
(e) has taken any other action, that (as to any of (a) through (e) above) would
constitute a distribution of the Certificates under the Securities Act of 1933
(the "Act"), that would render the disposition of any Certificate a violation of
Section 5 of the Act or any state securities law, or that would require
registration or qualification pursuant thereto. The Seller will not act in any
manner set forth in the foregoing sentence with respect to any Certificate. The

                                      F-1-1

<PAGE>

Seller has not and will not sell or otherwise transfer any of the Certificates,
except in compliance with the provisions of the Pooling and Servicing Agreement.

                                        Very truly yours,

                                        ----------------------------------------
                                        (Seller)

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                      F-1-2

<PAGE>

                                   EXHIBIT F-2

             FORM OF INVESTOR REPRESENTATION LETTER (NON-RULE 144A)

                                                               __________, 200__

Merrill Lynch Mortgage Investors, Inc.
4 World Financial Center
New York, New York 10281

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

     Re:  Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4 Mortgage
          Pass-Through Certificates, Class [___]

Ladies and Gentlemen:

     In connection with our acquisition of the above 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
institutional "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) solely in the case of an ERISA
Restricted Certificate, we (i) are not an employee benefit plan or arrangement
subject to Title I of the Employee Retirement Income Security Act of 1974, as
amended ("ERISA"), a plan subject to Section 4975 of the Internal Revenue Code
of 1986, as amended (the "Code") or a plan subject to any provisions under any
federal, state, local, non-U.S. or other laws or regulations that are
substantively similar to foregoing provisions of ERISA or the Code ("Similar
Law") (collectively, a "Plan"), and are not directly or indirectly acquiring
this Certificate for, on behalf of or with any assets of any such Plan, (ii) if
the Certificate has been the subject of an ERISA-Qualifying Underwriting, are an
insurance company that is acquiring the Certificate with assets of an "insurance
company general account" as defined in Section V(E) of Prohibited Transaction
Class Exemption ("PTCE") 95-60, and the acquisition and holding of the
Certificate are covered and exempt under Sections I and III of PTCE 95-60, or
(iii) solely in the case of a Definitive Certificate, shall deliver herewith an
Opinion of Counsel satisfactory to the Securities Administrator, and upon which
the Securities Administrator shall be entitled to rely, to the effect that the
acquisition and holding of this certificate by the transferee will not result in
a nonexempt prohibited transaction under ERISA or the Code, or a violation of
Similar Law, and will not subject the Depositor, the Master Servicer, the
Securities Administrator or the Trustee to any obligation in addition to those
undertaken by such entities in the Pooling and Servicing Agreement, which
Opinion of Counsel

                                      F-2-1

<PAGE>

shall not be an expense of the Depositor, the Master Servicer, the Securities
Administrator or the Trustee, (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 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

                                      F-2-2

<PAGE>

                                   EXHIBIT F-3

                            FORM OF RULE 144A LETTER

                                                             ____________, 200__

Merrill Lynch Mortgage Investors, Inc.
4 World Financial Center
New York, New York 10281

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

     Re:  Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4 Mortgage
          Pass-Through Certificates, Class [___]

Ladies and Gentlemen:

     In connection with our acquisition of the above 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) solely in the case of an ERISA Restricted
Certificate, we (i) are not an employee benefit plan or arrangement subject to
Title I of the Employee Retirement Income Security Act of 1974, as amended
("ERISA"), a plan subject to Section 4975 of the Internal Revenue Code of 1986,
as amended (the "Code") or a plan subject to any provisions under any federal,
state, local, non-U.S. or other laws or regulations that are substantively
similar to foregoing provisions of ERISA or the Code ("Similar Law")
(collectively, a "Plan"), and are not directly or indirectly acquiring this
Certificate for, on behalf of or with any assets of any such Plan, (ii) if the
Certificate has been the subject of an ERISA-Qualifying Underwriting, are an
insurance company that is acquiring the Certificate with assets of an "insurance
company general account" as defined in Section V(E) of Prohibited Transaction
Class Exemption ("PTCE") 95-60, and the acquisition and holding of the
Certificate are covered and exempt under Sections I and III of PTCE 95-60, or
(iii) solely in the case of a Definitive Certificate, shall deliver herewith an
Opinion of Counsel satisfactory to the Securities Administrator, and upon which
the Securities Administrator shall be entitled to rely, to the effect that the
acquisition and holding of this certificate by the transferee will not result in
a nonexempt prohibited transaction under ERISA or the Code, or a violation of
Similar Law, and will not subject the Depositor, the Master Servicer, the
Securities Administrator or the Trustee to any obligation in addition to those
undertaken by such entities in the Pooling and Servicing Agreement, which
Opinion of Counsel shall not be an expense of the Depositor, the Master
Servicer, the Securities Administrator or the

                                      F-3-1

<PAGE>

Trustee, (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 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

                                      F-3-2

<PAGE>

                                                          ANNEX I TO EXHIBIT F-3

            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
1 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.

----------
(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.

                                      F-3-3

<PAGE>

     ___ 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.

     ___ 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.

                                      F-3-4

<PAGE>

     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.

                                        ----------------------------------------
                                        Print Name of Buyer

                                        By:
                                             -----------------------------------
                                        Name:
                                        Title:

                                        Date:
                                              ----------------------------------

                                      F-3-5

<PAGE>

                                                         ANNEX II TO EXHIBIT F-3

            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,

                                      F-3-6

<PAGE>

(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.

          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 or Adviser

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:

                                        IF AN ADVISER:

                                        ----------------------------------------
                                        Print Name of Buyer

                                        Date:
                                              ----------------------------------

                                      F-3-7

<PAGE>

                                   EXHIBIT F-4

                         MIDDLEMAN REPRESENTATION LETTER

Merrill Lynch Mortgage Investors, Inc.
4 World Financial Center
New York, New York 10281

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

     Re:  Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4 Mortgage
          Pass-Through Certificates, Class [___]

Ladies and Gentlemen:

     In connection with our acquisition of the above Certificates we certify
that we are not acquiring the Class C or Class P Certificates as a "middleman"
as that term is defined in Treasury Regulation Section 1.671-5(b)(10).

                                        Very truly yours,

                                        ----------------------------------------
                                        Print Name of Transferee

                                        By:
                                            ------------------------------------
                                            Authorized Officer

                                      F-4-1

<PAGE>

                                    EXHIBIT G

                           FORM OF CUSTODIAL AGREEMENT

                               CUSTODIAL AGREEMENT

          THIS CUSTODIAL AGREEMENT (as amended and supplemented from time to
time, the "Agreement"), dated as of August 10, 2007, by and among HSBC BANK USA,
NATIONAL ASSOCIATION, as trustee (including its successors under the Pooling and
Servicing Agreement defined below, the "Trustee"), MERRILL LYNCH MORTGAGE
INVESTORS, INC., as company (together with any successor in interest, the
"Company"), WELLS FARGO BANK, N.A., as securities administrator and master
servicer (together with any successor in interest or successor under the Pooling
and Servicing Agreement referred to below, the "Master Servicer") and WELLS
FARGO BANK, N.A., as custodian (together with any successor in interest or any
successor appointed hereunder, the "Custodian").

                                WITNESSETH THAT:

          WHEREAS, the Company, the Master Servicer and the Trustee have entered
into a Pooling and Servicing Agreement, dated as of July 1, 2007, relating to
the issuance of Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4
Mortgage Pass-Through Certificates, (as amended and supplemented from time to
time, the "Pooling and Servicing Agreement"); and

          WHEREAS, the Custodian has agreed to act as agent for the Trustee for
the purposes of receiving and holding certain documents and other instruments
delivered by the Company or the Master Servicer under the Pooling and Servicing
Agreement, all upon the terms and conditions and subject to the limitations
hereinafter set forth;

          NOW, THEREFORE, in consideration of the premises and the mutual
covenants and agreements hereinafter set forth, the Trustee, the Company, the
Master Servicer and the Custodian hereby agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

          Capitalized terms used in this Agreement and not defined herein shall
have the meanings assigned in the Pooling and Servicing Agreement, unless
otherwise required by the context herein.

                                   ARTICLE II
                          CUSTODY OF MORTGAGE DOCUMENTS

          2.01. Custodian to Act as Agent: Acceptance of Mortgage Files,
Attestations and Assessments of Compliance.

          (a) The Custodian, as the duly appointed agent of the Trustee for
these purposes, acknowledges (subject to any exceptions noted in the Initial
Certification referred to in Section 2.3(a)) receipt of the Mortgage Files
relating to the Mortgage Loans identified on the

                                       G-1

<PAGE>

schedule attached hereto (the "Mortgage Files") and declares that it holds and
will hold such Mortgage Files as agent for the Trustee, in trust, for the use
and benefit of all present and future Certificateholders.

          (b) On or before March 1st of each calendar year, beginning with March
1, 2008, the Custodian shall, at its own expense, cause a firm of independent
public accountants (who may also render other services to Custodian), that is a
member of the American Institute of Certified Public Accountants, to furnish to
the Company and the Master Servicer a report to the effect that such firm
attests to, and reports on, the assessment made by such asserting party pursuant
to Section 2.01(c) below, which report shall be made in accordance with
standards for attestation engagements issued or adopted by the Public Company
Accounting Oversight Board.

          (c) On or before March 1st of each calendar year, beginning with March
1, 2008, the Custodian shall deliver to the Company and the Master Servicer a
report regarding its assessment of compliance with the servicing criteria
identified in Exhibit Three attached hereto, as of and for the period ending the
end of the fiscal year ending no later than December 31 of the year prior to the
year of delivery of the report, with respect to asset-backed security
transactions taken as a whole in which the Custodian is performing any of the
servicing criteria specified in Exhibit Three and that are backed by the same
asset type backing such asset-backed securities. Each such report shall include
(a) a statement of the party's responsibility for assessing compliance with the
servicing criteria applicable to such party, (b) a statement that such party
used the criteria identified in Item 1122(d) of Regulation AB (Section
229.1122(d)) to assess the compliance with the applicable servicing criteria,
(c) disclosure of any material instance of noncompliance identified by such
party, and (d) a statement that a registered public accounting firm has issued
an attestation report on such party's assessment of compliance with the
applicable servicing criteria, which report shall be delivered by the Custodian
as provided in this Section 2.01(c). However, the Custodian's obligation to
provide a report on assessment of compliance or an attestation with respect to
itself and with respect to any Subcontractor shall be suspended in any year in
which the Issuing Entity's reporting obligations under the Exchange Act are
suspended.

          (d) The Custodian has not and shall not engage any Subcontractor which
is "participating in the servicing function" within the meaning of Item 1122 of
Regulation AB, unless such Subcontractor agrees to provide in any year in which
a Form 10-K will be filed by the Trust, no later than March 1st of such year, an
assessment and a statement of registered public accounting firm certifying its
compliance with the applicable servicing criteria in Item 1122(d) of Regulation
AB as of and for the period ending the end of the fiscal year ending no later
than December 31 of the year prior to the year of delivery of the report.
"Subcontractor" as used herein means 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 the
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 Custodian.

          (e) The Custodian agrees to indemnify the Company, the Master
Servicer, the Trust Fund and each of their respective directors, officers,
employees and agents and hold each of them harmless from and against any losses,
damages, penalties, fines, forfeitures, legal fees and expenses and related
costs, judgments, and any other costs, fees and expenses that any of them may
sustain arising out of or based upon the engagement of any Subcontractor in
violation

                                       G-2

<PAGE>

of Section 2.01(d) or any failure by the Custodian to deliver any information,
report, certification, accountants' letter or other material when and as
required under this Agreement, including any report under Sections 2.01(b) or
2.01(c).

          2.02. Reserved.

          2.03. Review of Mortgage Files.

          (a) On or prior to the Closing Date, the Custodian agrees, for the
benefit of Certificateholders, to review, in accordance with the provisions of
Section 2.02 of the Pooling and Servicing Agreement, each such document, and
shall deliver to the Depositor, the Trustee and any NIMs Insurer an Initial
Certification in the form annexed hereto as Exhibit One evidencing receipt
(subject to any exceptions noted therein) of a Mortgage File for each of the
Mortgage Loans listed on the Schedule attached hereto (the "Mortgage Loan
Schedule") and certifying that all such documents have been executed and
received and that such documents relate to the Mortgage Loans identified on the
Mortgage Loan Schedule, except for any exceptions listed on Schedule A attached
to such Initial Certification. The Custodian 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 or that they are other than what they purport to be on
their face.

          (b) Not later than 180 days after the Closing Date, the Custodian
shall review the Mortgage Files as provided in Section 2.02 of the Pooling and
Servicing Agreement and deliver to the Depositor, the Trustee and any NIMs
Insurer a Final Certification in the form annexed hereto as Exhibit Two
evidencing the completeness of the Mortgage Files (subject to any exceptions
noted therein).

          (c) In reviewing the Mortgage Files as provided herein and in the
Pooling and Servicing Agreement, the Custodian shall make no representation as
to and shall not be responsible to verify (i) the validity, legality,
enforceability, due authorization, recordability, sufficiency or genuineness of
any of the documents included in any Mortgage File or (ii) the collectibility,
insurability, effectiveness or suitability of any of the documents in any
Mortgage File.

          Upon receipt of written request from the Trustee, the Custodian shall
as soon as practicable supply the Trustee with a list of all of the documents
relating to the Mortgage Loans then contained in the Mortgage Files.

          2.04. Notification of Breaches of Representations and Warranties. Upon
discovery by the Custodian of a breach of any representation or warranty made by
the Company as set forth in the Pooling and Servicing Agreement with respect to
a Mortgage Loan relating to a Mortgage File, the Custodian shall give prompt
written notice to the Company, the related Servicer and the Trustee.

          2.05. Custodian to Cooperate: Release of Mortgage Files. Upon receipt
of written notice from the Master Servicer that the Sponsor has repurchased a
Mortgage Loan pursuant to Article II of the Pooling and Servicing Agreement, and
that the purchase price

                                       G-3

<PAGE>

therefor has been deposited in the Master Servicer Collection Account or the
Distribution Account, then the Custodian agrees to promptly release to the
Sponsor the related Mortgage File.

          Upon the Custodian's receipt of a request for release (a "Request for
Release") substantially in the form of Exhibit D to the Pooling and Servicing
Agreement signed by a Servicing Officer of the related Servicer stating that it
has received payment in full of a Mortgage Loan or that payment in full will be
escrowed in a manner customary for such purposes, the Custodian agrees promptly
(but no later than three (3) Business Days) to release to such Servicer the
related Mortgage File. The Company shall deliver to the Custodian and the
Custodian agrees to accept the Mortgage Note and other documents constituting
the Mortgage File with respect to any Substitute Mortgage Loan. Any such Request
for Release provided by the related Servicer under this paragraph, must specify
the Mortgage File so requested for release in sufficient detail, and with
sufficient accuracy, to allow the Custodian timely to perform its obligations
under this Agreement in connection with such Request for Release. The Custodian
shall have no liability for any costs incurred by the related Servicer resulting
from any failure of the Custodian, in connection with any Request for Release,
to deliver any Mortgage File in a manner consistent with the terms of this
Agreement to the extent such failure is the result of insufficient detail or
insufficient accuracy provided to the Custodian in such Request for Release.

          From time to time as is appropriate for the servicing or foreclosure
of any Mortgage Loan, including, for this purpose, collection under any Primary
Mortgage Insurance Policy, the related Servicer shall deliver to the Custodian a
Request for Release signed by a Servicing Officer requesting that possession of
all of the Mortgage File be released to such Servicer and certifying as to the
reason for such release and that such release will not invalidate any insurance
coverage provided in respect of the Mortgage Loan under any of the Insurance
Policies. Upon receipt of the foregoing, the Custodian promptly shall deliver
the Mortgage File to such Servicer. The related Servicer shall cause each
Mortgage File or any document therein so released to be returned to the
Custodian when the need therefore by such Servicer no longer exists, unless (i)
the Mortgage Loan has been liquidated and the Liquidation Proceeds relating to
the Mortgage Loan have been deposited in the Master Servicer Collection Account
or the Distribution Account or (ii) the Mortgage File or such document has been
delivered to an attorney, or to a public trustee or other public official as
required by law, for purposes of initiating or pursuing legal action or other
proceedings for the foreclosure of the Mortgaged Property either judicially or
non-judicially, and the related Servicer has delivered to the Custodian a
certificate of a Servicing Officer certifying as to the name and address of the
Person to which such Mortgage File or such document was delivered and the
purpose or purposes of such delivery.

          At any time that a Servicer is required to deliver to the Custodian a
Request for Release, such Servicer shall deliver two copies of the Request for
Release if delivered in hard copy or such Servicer may furnish such Request for
Release electronically to the Custodian, in which event the Servicing Officer
transmitting the same shall be deemed to have signed the Request for Release. In
connection with any Request for Release of a Mortgage File because of a
repurchase of a Mortgage Loan, the related Servicer shall send to the Trustee an
assignment of mortgage, without recourse, representation or warranty from the
Trustee to the Sponsor and the related Mortgage Note which shall be endorsed
without recourse, representation or warranty by the Trustee and the Trustee
shall forward such documents to the Sponsor. In connection with any Request for
Release of a Mortgage File because of the payment in full of a Mortgage Loan,
the

                                       G-4
<PAGE>

related Servicer shall send to the Trustee a certificate of satisfaction or
other similar instrument to be executed by or on behalf of the Trustee and
returned to such Servicer.

          2.06. Assumption Agreements. In the event that any assumption
agreement or substitution of liability agreement is entered into with respect to
any Mortgage Loan subject to this Agreement, in accordance with the terms and
provisions of the Pooling and Servicing Agreement, the Master Servicer shall
cause the related Servicer to notify the Custodian that such assumption or
substitution agreement has been completed by forwarding to the Custodian the
original of such assumption or substitution agreement, which shall be added to
the related Mortgage File and, for all purposes, shall be considered a part of
such Mortgage File to the same extent as all other documents and instruments
constituting parts thereof.

                                   ARTICLE III
                            CONCERNING THE CUSTODIAN

          3.01. Custodian a Bailee and Agent of the Trustee. With respect to
each Mortgage Note, Mortgage and other documents constituting each Mortgage File
which are delivered to the Custodian, the Custodian is exclusively the bailee
and agent of the Trustee and has no instructions to hold any Mortgage Note or
Mortgage for the benefit of any person other than the Trustee and the
Certificateholders and undertakes to perform such duties and only such duties as
are specifically set forth in this Agreement. Except upon compliance with the
provisions of Section 2.5 of this Agreement, no Mortgage Note, Mortgage or
Mortgage File shall be delivered by the Custodian to the Company, the related
Servicer or the Master Servicer or otherwise released from the possession of the
Custodian.

          3.02. Reserved.

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

          3.04. Master Servicer to Pay Custodian's Fees and Expenses. The Master
Servicer covenants and agrees to pay to the Custodian from time to time, and the
Custodian shall be entitled to, reasonable compensation for all services
rendered by it in the exercise and performance of any of the powers and duties
hereunder of the Custodian, and the Master Servicer will pay or reimburse the
Custodian upon its request for all reasonable expenses, disbursements and
advances incurred or made by the Custodian in accordance with any of the
provisions of this Agreement (including the reasonable compensation and the
expenses and disbursements of its counsel and of all persons not regularly in
its employ), except any such expense, disbursement or advance as may arise from
its negligence or bad faith or to the extent that such cost or expense is
indemnified by the Company pursuant to the Pooling and Servicing Agreement.

          3.05. Custodian May Resign; Trustee May Remove Custodian. The
Custodian may resign from the obligations and duties hereby imposed upon it as
such obligations and duties relate to its acting as Custodian of the Mortgage
Loans. Upon receiving such notice of resignation, the Trustee shall either take
custody of the Mortgage Files itself and give prompt notice thereof to the
Company, the Master Servicer and the Custodian, or promptly appoint a successor
Custodian by written instrument, in duplicate, one copy of which instrument
shall be delivered to the resigning Custodian and one copy to the successor
Custodian. If the Trustee shall

                                      G-5

<PAGE>

not have taken custody of the Mortgage Files and no successor Custodian shall
have been so appointed and have accepted appointment within 30 days after the
giving of such notice of resignation, the resigning Custodian may petition any
court of competent jurisdiction for the appointment of a successor Custodian.

          The Trustee may remove the Custodian at any time with the consent of
the Master Servicer. In such event, the Trustee shall appoint, or petition a
court of competent jurisdiction to appoint, a successor Custodian hereunder. Any
successor Custodian shall be a depository institution subject to supervision or
examination by federal or state authority, shall be able to satisfy the other
requirements contained in Section 3.7 and shall be unaffiliated with the related
Servicer or the Company.

          Any resignation or removal of the Custodian and appointment of a
successor Custodian pursuant to any of the provisions of this Section 3.5 shall
become effective upon acceptance of appointment by the successor Custodian. The
Trustee shall give prompt notice to the Company and the Master Servicer of the
appointment of any successor Custodian. No successor Custodian shall be
appointed by the Trustee without the prior approval of the Company and the
Master Servicer.

          3.06. Merger or Consolidation of Custodian. Any Person into which the
Custodian may be merged or converted or with which it may be consolidated, or
any Person resulting from any merger, conversion or consolidation to which the
Custodian shall be a party, or any Person succeeding to the business of the
Custodian, shall be the successor of the Custodian 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.

          3.07. Representations of the Custodian. The Custodian hereby
represents that it is a depository institution subject to supervision or
examination by a federal or state authority, has a combined capital and surplus
of at least $15,000,000 and is qualified to do business in the jurisdictions in
which it will hold any Mortgage File.

                                   ARTICLE IV
                            MISCELLANEOUS PROVISIONS

          4.01. Notices. All notices, requests, consents, demands and other
communications required under this Agreement or pursuant to any other instrument
or document delivered hereunder shall be in writing and, unless otherwise
specifically provided, may be delivered personally, by telegram or telex, or by
registered or certified mail, postage prepaid, return receipt requested, at the
addresses specified on the signature page hereof (unless changed by the
particular party whose address is stated herein by similar notice in writing),
in which case the notice will be deemed delivered when received.

          4.02. Amendments. No modification or amendment of or supplement to
this Agreement shall be valid or effective unless the same is in writing and
signed by all parties hereto, and neither the Company, the Master Servicer nor
the Trustee shall enter into any amendment hereof except as permitted by the
Pooling and Servicing Agreement.

          4.03. GOVERNING LAW. THIS AGREEMENT SHALL BE DEEMED A CONTRACT MADE
UNDER THE LAWS OF THE STATE OF NEW YORK AND SHALL

                                      G-6

<PAGE>

BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE
STATE OF NEW YORK.

          4.04. Recordation of Agreement. To the extent permitted by applicable
law, 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 Company and at the Trust's expense, but only upon
direction accompanied by an Opinion of Counsel (which shall be at the expense of
the party requesting such recordation and in no event at the expense of the
Trustee) reasonably satisfactory to the Company to the effect that the failure
to effect such recordation is likely to materially and adversely affect the
interests of the Certificateholders.

          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.

          4.05. 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.

          4.06. Third-Party Rights. The NIMs Insurer, if any, shall be deemed a
third-party beneficiary of this Agreement to the same extent as if it were a
party hereto, and shall have the right to enforce the provisions of this
Agreement.

          4.07. Identification of NIMs Insurer. All references in this Agreement
to the "NIMs Insurer" shall become operative only after notice from the
Depositor to the Trustee and the Custodian of the identification of the NIMs
Insurer.

                                      G-7

<PAGE>

          IN WITNESS WHEREOF, this Agreement is executed as of the date first
above written.

                                          HSBC BANK USA, NATIONAL ASSOCIATION,
                                          as Trustee

                                          By:
                                              ----------------------------------
                                          Name:
                                          Title:

                                          MERRILL LYNCH MORTGAGE INVESTORS, INC.

                                          By:
                                              ----------------------------------
                                          Name:
                                          Title:

                                          WELLS FARGO BANK, N.A.,
                                          as Master Servicer

                                          By:
                                              ----------------------------------
                                          Name:
                                          Title:

                                          WELLS FARGO BANK, N.A.,
                                          as Custodian

                                          By:
                                              ----------------------------------
                                          Name:
                                          Title:

                                      G-8

<PAGE>

                 EXHIBIT ONE TO THE FORM OF CUSTODIAL AGREEMENT

                     FORM OF CUSTODIAN INITIAL CERTIFICATION

                                                              ___________, 200__

Merrill Lynch Mortgage Investors, Inc.
250 Vesey Street
4 World Financial Center, 10th Floor
New York, New York 10281

HSBC Bank USA, National Association
452 Fifth Avenue
New York, NY 10018

      Re: Pooling and Servicing Agreement, dated as of July 1, 2007, among
          Merrill Lynch Mortgage Investors, Inc., as depositor, Wells Fargo
          Bank, N.A., as master servicer and securities administrator and HSBC
          Bank USA, National Association, as trustee, relating to the Merrill
          Lynch Alternative Note Asset Trust, Series 2007-OAR4 Mortgage
          Pass-Through Certificates

          Ladies and Gentlemen:

     Attached is the Custodian's preliminary exception report (attached hereto
as Schedule A) delivered in accordance with Section 2.02 of the referenced
Pooling and Servicing Agreement (the "Pooling and Servicing Agreement").
Capitalized terms used but not otherwise defined herein shall have the meanings
set forth in the Pooling and Servicing Agreement.

     The Custodian 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 Custodian makes no representations as to
(i) the validity, legality, sufficiency, enforceability or genuineness of any of
the documents contained in the Mortgage File pertaining to the Mortgage Loans
identified on the Mortgage Loan Schedule, (ii) the collectability, insurability,
effectiveness or suitability of any such Mortgage Loan or (iii) the existence of
any assumption, modification, written assurance, or substitution agreement, with
respect to any Mortgage File if no such documents appear in the Mortgage File
delivered to the Custodian.

                                        WELLS FARGO BANK, N.A.,
                                        as Custodian

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:

                                      G-9
<PAGE>

                 EXHIBIT TWO TO THE FORM OF CUSTODIAL AGREEMENT

                      FORM OF CUSTODIAN FINAL CERTIFICATION

                                                              ____________, 2007

Merrill Lynch Mortgage Investors, Inc.
250 Vesey Street
4 World Financial Center, 10th Floor
New York, New York 10281
Attention: ________________________

HSBC Bank USA, National Association
452 Fifth Avenue
New York, NY 10018

      Re: Pooling and Servicing Agreement, dated as of July 1, 2007, among
          Merrill Lynch Mortgage Investors, Inc., as depositor, Wells Fargo
          Bank, N.A., as master servicer and securities administrator and HSBC
          Bank USA, National Association, as trustee, relating to the Merrill
          Lynch Alternative Note Asset Trust, Series 2007-OAR4 Mortgage
          Pass-Through Certificates

          Ladies and Gentlemen:

     In accordance with Section 2.02 of the above-captioned Pooling and
Servicing Agreement, the undersigned, hereby certifies that, except as noted on
the Schedule of Exceptions attached hereto, for each Mortgage Loan listed on the
Mortgage Loan Schedule (other than any Mortgage Loan paid in full or listed on
the attachment hereto), it has received a complete Mortgage File which includes
the documents required to be included in the Mortgage File as set forth in the
Pooling and Servicing Agreement.

     The undersigned 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 undersigned makes no
representation as to: (i) the validity, legality, sufficiency, enforceability or
genuineness of any documents contained in any Mortgage File for any of the
Mortgage Loans listed on the Mortgage Loan Schedule to the Pooling and Servicing
Agreement, (ii) the collectability, insurability, effectiveness or suitability
of any such Mortgage Loan or (iii) whether any Mortgage File should include any
flood insurance policy, any rider, addends, surety or guaranty agreement, power
of attorney, buy down agreement, assumption agreement, modification agreement,
written assurance or substitution agreement.

                                      G-10

<PAGE>

     Capitalized words and phrases used herein shall have the respective
meanings assigned to them in the above-captioned Pooling and Servicing
Agreement.

                                        WELLS FARGO BANK, N.A.,
                                        as Custodian

                                        By:
                                            ------------------------------------
                                        Name:

                                      G-11
<PAGE>

                EXHIBIT THREE TO THE FORM OF CUSTODIAL AGREEMENT

      FORM OF CERTIFICATION REGARDING SERVICING CRITERIA TO BE ADDRESSED IN
                         REPORT ON ASSESSMENT COMPLIANCE

The assessment of compliance to be delivered by Wells Fargo Bank shall address,
at a minimum, the criteria identified below as "Applicable Servicing Criteria":

<TABLE>
<CAPTION>
                         SERVICING CRITERIA                           APPLICABLE
-------------------------------------------------------------------    SERVICING
    REFERENCE                          CRITERIA                        CRITERIA
----------------   ------------------------------------------------   ----------
<S>                <C>                                                <C>
                           GENERAL SERVICING CONSIDERATIONS

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.

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.

1122(d)(1)(iii)    Any requirements in the transaction agreements
                   to maintain a back-up servicer for the mortgage
                   loans are maintained.

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.

                          CASH COLLECTION AND ADMINISTRATION

1122(d)(2)(i)      Payments on mortgage loans 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.

1122(d)(2)(ii)     Disbursements made via wire transfer on behalf
                   of an obligor or to an investor are made only by
                   authorized personnel.

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.

1122(d)(2)(iv)     The related accounts for the transaction, such
                   as cash reserve accounts or accounts established
                   as a form of overcollateralization, 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 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 to prevent
                   unauthorized access.

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.
</TABLE>

                               G-12

<PAGE>

<TABLE>
<CAPTION>
                         SERVICING CRITERIA                           APPLICABLE
-------------------------------------------------------------------    SERVICING
    REFERENCE                          CRITERIA                        CRITERIA
----------------   ------------------------------------------------   ----------
<S>                <C>                                                <C>
                          INVESTOR REMITTANCES AND REPORTING

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
                   mortgage loans serviced by the Servicer.

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.

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.

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.

                               POOL ASSET ADMINISTRATION

1122(d)(4)(i)      Collateral or security on mortgage loans is             X
                   maintained as required by the transaction
                   agreements or related mortgage loan documents.

1122(d)(4)(ii)     Mortgage loan and related documents are                 X
                   safeguarded as required by the transaction
                   agreements.

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.

1122(d)(4)(iv)     Payments on mortgage loans, including any
                   payoffs, made in accordance with the related
                   mortgage loan 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 mortgage
                   loan documents.

1122(d)(4)(v)      The Servicer's records regarding the mortgage
                   loans 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 of
                   an obligor's mortgage loans (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.,
                   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
                   maintained during the period a mortgage loan 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 mortgage loans 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 return
                   for mortgage loans with variable rates are
                   computed based on the related mortgage loan
                   documents.

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
                   mortgage loan 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 mortgage loan
                   documents and state laws; and (C) such funds are
                   returned to the obligor within 30 calendar days
                   of full repayment of the related mortgage loans,
                   or such other number of days specified in the
                   transaction agreements.
</TABLE>

                               G-13

<PAGE>

<TABLE>
<CAPTION>
                         SERVICING CRITERIA                           APPLICABLE
-------------------------------------------------------------------    SERVICING
    REFERENCE                          CRITERIA                        CRITERIA
----------------   ------------------------------------------------   ----------
<S>                <C>                                                <C>
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.

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.

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.

1122(d)(4)(xiv)    Delinquencies, charge-offs and uncollectible
                   accounts are recognized and recorded in
                   accordance with the transaction agreements.

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.
</TABLE>

                               G-14
<PAGE>

                                    EXHIBIT H

                         ONE-MONTH LIBOR CORRIDOR TABLE

                           See Schedule A of Exhibit N

                                       H-1

<PAGE>

                                    EXHIBIT I

                                   [RESERVED]

                                       I-1

<PAGE>

                                    EXHIBIT J

                    FORM OF MORTGAGE LOAN PURCHASE AGREEMENT

                         See Exhibit 99.1 of this Filing

                                       J-1

<PAGE>

                                    EXHIBIT K

                       SERVICING CRITERIA TO BE ADDRESSED
                           IN ASSESSMENT OF COMPLIANCE
                          (RMBS UNLESS OTHERWISE NOTED)

KEY: X - obligation

WHERE THERE ARE MULTIPLE CHECKS FOR CRITERIA THE ATTESTING PARTY WILL IDENTIFY
IN ITS MANAGEMENT ASSERTION THAT IT IS ATTESTING ONLY TO THE PORTION OF THE
DISTRIBUTION CHAIN IT IS RESPONSIBLE FOR IN THE RELATED TRANSACTION AGREEMENTS.
CAPITALIZED TERMS USED HEREIN BUT NOT DEFINED HEREIN SHALL HAVE THE MEANINGS
ASSIGNED TO THEM IN THE POOLING AND SERVICING AGREEMENT, DATED AS OF JULY 1,
2007, AMONG MERRILL LYNCH MORTGAGE INVESTORS, INC., AS DEPOSITOR, WELLS FARGO
BANK, N.A., AS MASTER SERVICER AND SECURITIES ADMINISTRATOR AND HSBC BANK USA,
NATIONAL ASSOCIATION, AS TRUSTEE.

<TABLE>
<CAPTION>
                                                                      SECURITIES     MASTER
REG AB REFERENCE                 SERVICING CRITERIA                 ADMINISTRATOR   SERVICER
----------------   ----------------------------------------------   -------------   --------
<S>                <C>                                              <C>             <C>
                   GENERAL SERVICING CONSIDERATIONS

1122(d)(1)(i)      Policies and procedures are instituted to              X             X
                   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 are               X             X
                   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 agreements        N/A           N/A
                   to maintain a back-up servicer for the Pool
                   Assets are maintained.

1122(d)(1)(iv)     A fidelity bond and errors and omissions                             X
                   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.

                   CASH COLLECTION AND ADMINISTRATION

1122(d)(2)(i)      Payments on pool assets are deposited into the         X             X
                   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 on behalf         X             X
                   of an obligor or to an investor are made only
                   by authorized personnel.

1122(d)(2)(iii)    Advances of funds or guarantees regarding                            X
                   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 transaction, such         X             X
                   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.
</TABLE>

                                       K-1

<PAGE>

<TABLE>
<CAPTION>
                                                                      SECURITIES     MASTER
REG AB REFERENCE                 SERVICING CRITERIA                 ADMINISTRATOR   SERVICER
----------------   ----------------------------------------------   -------------   --------
<S>                <C>                                              <C>             <C>
1122(d)(2)(v)      Each custodial account is maintained at a              X             X
                   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 to
                   prevent unauthorized access.

1122(d)(2)(vii)    Reconciliations are prepared on a monthly              X             X
                   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.

                   INVESTOR REMITTANCES AND REPORTING

1122(d)(3)(i)      Reports to investors, including those to be            X             X
                   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 and             X             X
                   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 posted           X             X
                   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 investor         X             X
                   reports agree with cancelled checks, or other
                   form of payment, or custodial bank statements.

                   POOL ASSET ADMINISTRATION

1122(d)(4)(i)      Collateral or security on pool assets is
                   maintained as required by the transaction
                   agreements or related pool asset documents.

1122(d)(4)(ii)     Pool assets and related documents are
                   safeguarded as required by the transaction
                   agreements

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.
</TABLE>

                                       K-2

<PAGE>

<TABLE>
<CAPTION>
                                                                      SECURITIES     MASTER
REG AB REFERENCE                 SERVICING CRITERIA                 ADMINISTRATOR   SERVICER
----------------   ----------------------------------------------   -------------   --------
<S>                <C>                                              <C>             <C>
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.

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.

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.

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.

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).

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.

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.

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.

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.
</TABLE>

                                       K-3

<PAGE>

<TABLE>
<CAPTION>
                                                                      SECURITIES     MASTER
REG AB REFERENCE                 SERVICING CRITERIA                 ADMINISTRATOR   SERVICER
----------------   ----------------------------------------------   -------------   --------
<S>                <C>                                              <C>             <C>
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.

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,
                   identified in Item 1114(a)(1) through (3) or
                   Item 1115 of Regulation AB, is maintained as
                   set forth in the transaction agreements.
</TABLE>

                                       K-4
<PAGE>

                                    EXHIBIT L

                          SARBANES-OXLEY CERTIFICATION

                                     [DATE]

Merrill Lynch Mortgage Investors, Inc.
250 Vesey Street
4 World Financial Center, 10th Floor
New York, New York 10080

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

Re: Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4

          I, [identify the certifying individual], certify that:

          1. I have reviewed the 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 Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4 (the
"Exchange Act periodic reports");

          2. Based on my knowledge, the Exchange Act periodic reports, taken as
a whole, do 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, all of 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. [I am responsible for reviewing the activities performed by the
servicer(s) and based on my knowledge and the compliance review(s) conducted in
preparing the servicer compliance statement(s) required in this report under
Item 1123 of Regulation AB, and except as disclosed in the Exchange Act periodic
reports, the servicer(s) [has/have] fulfilled [its/their] obligations under the
servicing agreement(s) in all material respects; and]

          5. All of the reports on assessment of compliance with servicing
criteria for ABS 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.

                                       L-1

<PAGE>

          [In giving the certifications above, I have reasonably relied on
information provided to me by the following unaffiliated parties [name of
servicer, subservicer, co-servicer, depositor or trustee].]

Date:
      ----------------------

                                        ----------------------------------------
                                        [Signature]
                                        [Title]

                                       L-2

<PAGE>

                                    EXHIBIT M

                  FORM OF BACK-UP SARBANES-OXLEY CERTIFICATION

Merrill Lynch Mortgage Investors, Inc.
250 Vesey Street
4 World Financial Center, 10th Floor
New York, New York 10080

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

Re: Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4

          [_______], the [_______] of [_______] (the "Company") hereby certifies
to the Depositor, the Master Servicer and the Securities Administrator, and each
of their officers, directors and affiliates that:

          (1) I, or persons under my supervision, have reviewed [the servicer
compliance statement of the Company provided in accordance with Item 1123 of
Regulation AB (the "Compliance Statement"),] the report on assessment of the
Company'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 the 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 Company during 200[_] that were delivered by the Company to any of
the Depositor, the Master Servicer and the Trustee pursuant to the Agreement
(collectively, the "Company Servicing Information") and used by such parties in
the report on Form 10-K and all reports on Form 10-D to be filed in respect of
such year;

          (2) Based on my knowledge, the Company 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 Company Servicing Information;

          (3) Based on my knowledge, all of the Company Servicing Information
required to be provided by the Company under the Agreement has been provided to
the Depositor, the Master Servicer and the Securities Administrator;

          (4) I am responsible for reviewing the activities performed by
[_______] as [_______] under the [_______] (the "Agreement"), and based on my
knowledge [and the compliance review conducted in preparing the Compliance
Statement] and except as disclosed in [the Compliance Statement,] the Servicing
Assessment or the Attestation Report, the Company has fulfilled its obligations
under the Agreement in all material respects; and

                                       M-1

<PAGE>

          (5) [The Compliance Statement required to be delivered by the Company
pursuant to the Agreement, and] [The] [the] Servicing Assessment and Attestation
Report required to be provided by the Company and [by any Subservicer or
Subcontractor] pursuant to the Agreement, have been provided to the Depositor,
the Master Servicer and the Securities Administrator. Any material instances of
noncompliance described in such reports have been disclosed to the Depositor,
the Master Servicer and the Securities Administrator. Any material instance of
noncompliance with the Servicing Criteria has been disclosed in such reports.

          Capitalized terms used but not defined herein have the meanings
ascribed to them in the Pooling and Servicing Agreement, dated as of July 1,
2007, among Merrill Lynch Mortgage Investors, Inc., as depositor (the
"Depositor"), Wells Fargo Bank, N.A., as master servicer (in such capacity, the
"Master Servicer") and securities administrator (in such capacity, the
"Securities Administrator") and HSBC Bank USA, National Association, as trustee
(the "Trustee").

          In giving the certifications above, I have reasonably relied on
information provided to me by unaffiliated parties other than the Company's
Subservicers, if any, and Subcontractors, and including the Depositor, the
Master Servicer, the Trustee and the originators and prior servicers of the
Mortgage Loans.

                                        [_____________]
                                        as [________________]

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:
                                        Date:

                                       M-2

<PAGE>

                                    EXHIBIT N

                            FORM OF CORRIDOR CONTRACT

                                       N-1

<PAGE>

Date: August 10, 2007

To:   Merrill Lynch Alternative Note Asset     From: Morgan Stanley Capital
      Trust, Series 2007-OAR4 Mortgage               Services Inc.
      Pass-Through Certificates

Attn: Wells Fargo Bank, National Association   Attn: New York Derivative
      9062 Old Annapolis Road                        Client Services Group
      Columbia, Maryland 21045
      Attn: Client Manager - MANA 2007-OAR4

Fax:  (410) 715-2380                           Fax:  (646) 202-9190

Tel:  (410) 884-2000                           Tel:  (212) 761-2996

     Re: Corridor Reference Number KQBSM

          The purpose of this letter agreement is to confirm the terms and
conditions of the Transaction entered into between Wells Fargo Bank, National
Association, not in its individual capacity but solely as Securities
Administrator on behalf of the Merrill Lynch Alternative Note Asset Trust,
Series 2007-OAR4 Mortgage Pass-Through Certificates created pursuant to the
Pooling and Servicing Agreement dated as of July 1, 2007 among, Merrill Lynch
Mortgage Investors, Inc., as depositor, Wells Fargo Bank, National Association,
as master servicer and securities administrator and HSBC Bank USA, National
Association, as trustee (the "PSA") and Morgan Stanley Capital Services Inc., on
the Trade Date specified below (the "Transaction"). This letter agreement
constitutes a "Confirmation" as referred to in the ISDA Master Agreement below.

          The definitions and provisions contained in the 2006 ISDA Definitions
(as published by the International Swaps and Derivatives Association, Inc.) are
incorporated into this Confirmation. In the event of any inconsistency between
those definitions and this Confirmation, this Confirmation will govern.

          1. This Confirmation evidences a complete, binding agreement between
you and us as to the terms of the Transaction to which this Confirmation
relates. In addition, this Confirmation supplements, forms a part of, and is
subject to an agreement in the form of the 1992 ISDA Master Agreement
(Multicurrency-Cross Border), with such modifications as are specified herein,
as if we had executed an Agreement in such form on the Trade Date of the first
such Transaction between us (the "Agreement"). All provisions contained or
incorporated by reference in the Agreement shall govern this Confirmation except
as expressly modified below. In the event of any inconsistency between the
provisions of that Agreement and this Confirmation, this Confirmation will
prevail for the purpose of this Transaction.

          2. The terms of the particular Transaction to which this Confirmation
relates are as follows:

<TABLE>
<S>                                          <C>
Party A:                                     Morgan Stanley Capital Services Inc.

Party A Credit Support:                      Payments guaranteed by Morgan Stanley

Party B:                                     Merrill Lynch Alternative Note Asset
                                             Trust, Series 2007-OAR4 Mortgage
                                             Pass-Through Certificates

Trade Date:                                  August 7, 2007

Effective Date:                              August 10, 2007

Termination Date:                            June 25, 2008
</TABLE>

                                        N-2

<PAGE>

<TABLE>
<S>                                          <C>
Notional Amount:                             With respect to any Calculation
                                             Period, the lesser of (i) the amount
                                             set forth for such period in Schedule
                                             A attached hereto and (ii) the
                                             Certificate Principal Balance of the
                                             Offered Certificates immediately
                                             prior to the related Distribution
                                             Date (as such terms are defined in
                                             the PSA).

Fixed Amounts:

   Fixed Amount Payer:                       Party B

   Fixed Amount Payer Payment Date:          August 10, 2007

   Fixed Amount                              $[_________]

Floating Amounts:

   Floating Amount:                          To be determined in accordance with
                                             the following formula:

                                             Greater of (i) (Floating Rate Option
                                             minus Strike Rate) * Notional Amount
                                             * Floating Rate Day Count Fraction,
                                             and (ii) zero.

   Floating Rate Payer:                      Party A

   Strike Rate:                              With respect to any Calculation
                                             Period, the amount set forth for such
                                             period in Schedule A attached hereto.

   Floating Rate Payer Payment Dates:        Early Payment - For each Calculation
                                             Period, the first Business Day prior
                                             to each Floating Rate Payer Period
                                             End Date.

   Floating Rate Payer Period End Date(s):   The 25th of each month in each year
                                             from (and including) August 25, 2007
                                             to (and including) the Termination
                                             Date with no adjustment to Period End
                                             Dates. For the avoidance of doubt,
                                             the initial Calculation Period will
                                             accrue from and including the
                                             Effective Date to but excluding
                                             August 25, 2007 and the final
                                             Calculation Period will accrue from
                                             and including May 25, 2008 to but
                                             excluding the Termination Date.

   Floating Rate Option:                     USD-LIBOR-BBA, provided, however,
                                             that if the Floating Rate determined
                                             from such Floating Rate Option for
                                             any Calculation Period is greater
                                             than 10.030% per annum for such
                                             Calculation Period, then the Floating
                                             Rate for such Calculation Period
                                             shall be deemed to be equal to
                                             10.030% per annum.

   Designated Maturity:                      1 Month

   Floating Rate Day Count Fraction:         Act/360

   Reset Dates:                              The first day of each Calculation
                                             Period.

Compounding:                                 Inapplicable

Business Days:                               New York

Calculation Agent:                           Party A.
</TABLE>

                                        N-3

<PAGE>

          3. Account Details:

<TABLE>
<S>                    <C>
Payments to Party A:   Citibank, New York
                       ABA No. 021 000 089
                       For: Morgan Stanley Capital Services Inc.
                       Account No. 4072 4601

Operations Contact:    Operations
                       Tel: 212-761-4662
                       Fax: 410-534-1431

Payments to Party B:   Wells Fargo Bank, National Association
                       ABA No.: 121 000 248
                       Account No: 3970771416
                       Acct Name: SAS Clearing
                       Ref: FFC: 53168102, MANA 2007-OAR4 (corridor)
</TABLE>

          4. Modifications to the Agreement:

          The parties hereby agree to amend the Agreement referenced in
paragraph 1 above as follows:

          (a) "CROSS DEFAULT" applies to Party A but not to Party B.

          (b) FULLY-PAID TRANSACTIONS. Notwithstanding the terms of Sections 5
and 6 of the Agreement, if Party B has satisfied in full all of its payment
obligations under Section 2(a)(i) of the Agreement, then unless Party A is
required pursuant to appropriate proceedings to return to Party B or otherwise
returns to Party B upon demand of Party B any portion of such payment, (a) the
occurrence of an event described in Section 5(a) of the Agreement with respect
to Party B shall not constitute an Event of Default or Potential Event of
Default with respect to Party B as the Defaulting Party and (b) Party A shall be
entitled to designate an Early Termination Event pursuant to Section 6 of the
Agreement only as a result of a Termination Event set forth in either Section
5(b)(i) or Section 5(b)(ii) of the Agreement with respect to Party A as the
Affected Party or Section 5(b)(iii) of the Agreement with respect to Party A as
the Burdened Party. For purposes of the Transaction to which this Confirmation
relates, Party B's only obligation under Section 2(a)(i) of the Agreement is to
pay the Fixed Amount on the Fixed Rate Payer Payment Date.

          (c) "THRESHOLD AMOUNT" means, with respect to a party, U.S.
$10,000,000 (or the equivalent in another currency, currency unit or combination
thereof).

          (d) PAYMENTS ON EARLY TERMINATION. "Market Quotation" and "Second
Method" will apply for the purpose of Section 6(e) of this Agreement.

          (e) "TERMINATION CURRENCY" means United States Dollars.

          (f) PARTY A AND PARTY B PAYER TAX REPRESENTATIONS. For the purpose of
Section 3(e), each of Party A and Party B makes the following representation:

               It is not required by any applicable law, as modified by the
               practice of any relevant governmental revenue authority, of any
               Relevant Jurisdiction to make any deduction or withholding for or
               on account of any Tax from any payment (other than interest under
               Section 2(e), 6(d)(ii) or 6(e)) to be made by it to the other
               party under this Agreement. In making this representation, it may
               rely on (i) the accuracy of any representation made by the other
               party pursuant to Section 3(f); (ii) the satisfaction of the
               agreement of the other party contained in Section 4(a)(i) or
               4(a)(iii) and the accuracy and effectiveness of any document
               provided by the other party pursuant to Section 4(a)(i) or
               4(a)(iii); and (iii) the satisfaction of the agreement of the
               other party contained in Section 4(d), provided that it

                                       N-4
<PAGE>

               shall not be a breach of this representation where reliance is
               placed on clause (ii) and the other party does not deliver a form
               or document under Section 4(a)(iii) by reason of material
               prejudice to its legal or commercial position.

          (g)  PAYEE TAX REPRESENTATIONS.

          (i)  For the purpose of Section 3(f), Party A makes the following
               representation:

               It is a corporation duly organized and incorporated under the
               laws of the State of Delaware and is not a foreign corporation
               for United States tax purposes.

          (ii) For the purpose of Section 3(f), Party B makes the following
               representation:

               It is a trust duly formed under the laws of the State of New York
               and is not a foreign corporation for United States tax purposes.

          (h) GOVERNING LAW; JURISDICTION. This Agreement and each Credit
Support Document will be governed by and construed in accordance with the laws
of the State of New York without regard to conflict of law provisions thereof
other than New York General Obligations Law Sections 5-1401 and 5-1402. Section
13(b) is amended by: (1) deleting "non-" from the second line of clause (i); and
(2) deleting the final paragraph.

          (i) WAIVER OF JURY TRIAL. Each party waives, to the fullest extent
permitted by applicable law, any right it may have to a trial by jury in respect
of any Proceedings relating to the Agreement or any Credit Support Document.

          (j) "AFFILIATE" has the meaning specified in Section 14, but excludes
Morgan Stanley Derivative Products Inc.

          (k) ADDITIONAL REPRESENTATIONS. Section 3 is hereby amended by adding
at the end thereof the following Subparagraphs:

          (i) It is an "eligible contract participant" within the meaning of
     Section 1a(12) of the Commodity Exchange Act (7 U.S.C. 1a), as amended by
     the Commodity Futures Modernization Act of 2000.

          (ii) It has entered into this Agreement (including each Transaction
     evidenced hereby) in conjunction with its line of business (including
     financial intermediation services) or the financing of its business.

          (iii) It is entering into this Agreement, any Credit Support Document
     to which it is a party, each Transaction and any other documentation
     relating to this Agreement or any Transaction as principal (and not as
     agent or in any other capacity, fiduciary or otherwise).

          (iv) ERISA Representation.

               (A) Party A represents and warrants at all times hereunder that
          it is not a pension plan or employee benefit plan and that it is not
          using assets of any such plan or assets deemed to be assets of such a
          plan in connection with any Transaction under this Agreement, and

               (B) Party B represents and warrants at all times hereunder that
          (x) it is not a pension plan or employee benefit plan, and (y) (1)
          that it is not acting on behalf of any such plan or using assets of
          any such plan or assets deemed to be assets of any such plan in
          connection with any Transaction under this Agreement or (2) any
          pension plan or employee benefits plan subject to the Employee
          Retirement Income Security Act of 1974, as amended ("ERISA"), or
          Section 4975 of

                                       N-5

<PAGE>

          the Internal Revenue Code of 1986, as amended (the "Code"), or any
          person who is acting on behalf of such a plan, or using assets of such
          plan or assets deemed to be "plan assets" of such plan for purposes of
          ERISA or the Code, who purchases a certificate issued by the Trust
          while this Agreement is in existence (i) shall represent or shall be
          deemed to represent that the purchase and holding of such certificate
          is in reliance on at least one of the Prohibited Transaction Class
          Exemptions of 84-14, 90-1, 91-38, 95-60 or 96-23 or (ii) shall provide
          an opinion of counsel which states that such purchase and holding is
          permissible under applicable law and will not result in a prohibited
          transaction under ERISA or Section 4975 of the Code."

          (l) RELATIONSHIP BETWEEN PARTIES. Each party will be deemed to
represent to the other party on the date on which it enters into a Transaction
that (absent a written agreement between the parties that expressly imposes
affirmative obligations to the contrary for that Transaction):

          (i) NON-RELIANCE. In the case of Party A, it is acting for its own
     account, and in the case of Party B, the Securities Administrator is acting
     on behalf of the Trust. Party A has made its own independent decisions to
     enter into this Transaction and as to whether such Transaction is
     appropriate or proper for it based upon its own judgment and upon advice
     from such advisers as it has deemed necessary and, with respect to Party B,
     it has entered into this Transaction under this Agreement as directed under
     the PSA. It is not relying on any communication (written or oral) of the
     other party as investment advice or as a recommendation to enter into this
     Transaction; it being understood that information and explanations related
     to the terms and conditions of a Transaction shall not be considered
     investment advice or a recommendation to enter into this Transaction. No
     communication (written or oral) received from the other party shall be
     deemed to be an assurance or guarantee as to the expected results of each
     such Transaction.

          (ii) ASSESSMENT AND UNDERSTANDING. It is capable of assessing the
     merits of and understanding (on its own behalf or through independent
     professional advice), and understands and accepts, the terms, conditions
     and risks of that Transaction. It is also capable of assuming, and assumes,
     the risks of that Transaction.

          (iii) STATUS OF PARTIES. Party A and Party B are not acting as a
     fiduciary for or an adviser to each other in respect of that Transaction.

          (iv) FIDUCIARY CAPACITY. It is expressly understood and agreed by the
     parties hereto that (i) this Confirmation is executed and delivered by
     Wells Fargo Bank, National Association, not in its individual capacity but
     solely as Securities Administrator on behalf of the Trust under the PSA in
     the exercise of the powers and authority conferred upon and vested in it
     thereunder, (ii) each of the representations, undertakings and agreements
     herein made on behalf of the Trust created under the PSA is made and
     intended not as a personal representation, undertaking or agreement of the
     Securities Administrator, but is made and intended for the purpose of
     binding only the Trust and (iii) under no circumstances shall Wells Fargo
     Bank, National Association in its individual capacity be personally liable
     for the payment of any indebtedness or expenses or be personally liable for
     the breach or failure of any obligation, representation, warranty or
     covenant made or undertaken under this Confirmation.

          (m) ADDRESSES FOR NOTICES. For the purpose of Section 12(a):

          (i)  Address for notices or communications to Party A:

               Morgan Stanley Capital Services Inc.
               1585 Broadway, 3rd Floor
               New York, New York 10036
               Attention: Chief Legal Officer
               Facsimile No.: 212-507-4622

          (ii) Address for notices or communications to Party B:

                                       N-6

<PAGE>

               Wells Fargo Bank, National Association
               9062 Old Annapolis Road
               Columbia, Maryland  21045
               Attention: Client Manager - MANA 2007-OAR4
               Facsimile No.: 410-715-2380
               Telephone No.: 410-884-2000

          (n) SET-OFF. Notwithstanding any provision of this Agreement or any
other existing or future agreement, each party irrevocably waives any and all
rights it may have to set off, net, recoup or otherwise withhold or suspend or
condition payment or performance of any obligation between it and the other
party hereunder against any obligation between it and the other party under any
other agreements. The provisions for Set-Off set forth in Section 6(e) of the
Agreement shall not apply for purposes of this Transaction.

          (o) NOTICES. Section 12(a) is amended by adding in the third line
thereof after the phrase "messaging system" and before the ")" the words, ";
provided, however, any such notice or other communication may be given by
facsimile transmission if telex is unavailable, no telex number is supplied to
the party providing notice, or if answer back confirmation is not received from
the party to whom the telex is sent."

          (p) OBLIGATIONS. Section 2 is amended by adding the following to the
end thereof:

               "(f) Party B shall deliver or cause to be delivered to Party A
               IRS Form W-9 (or successor thereto) as soon as is practicable
               after the Effective Date."

          (q) REGULATION AB. Upon request by the Depositor, Party A may, at its
option, but is not required to, (A) (a) provide the financial information
required by Item 1115(b)(1) or (b)(2) of Regulation AB (as specified by the
Depositor to Party A) with respect to Party A (or any guarantor of Party A if
providing the financial data of a guarantor is permitted under Regulation AB)
and any affiliated entities providing derivative instruments to Party B (the
"Company Financial Information"), in a form appropriate for use in the Exchange
Act Reports and in an EDGAR-compatible form; (b) if applicable, cause its
accountants to issue their consent to filing or incorporation by reference of
such financial statements in the Exchange Act Reports of Party B and (c) within
5 Business Days of the release of any updated financial information, provide
current Company Financial Information as required under Item 1115(b) of
Regulation AB to the Depositor in an EDGAR-compatible form and, if applicable,
cause its accountants to issue their consent to filing or incorporation by
reference of such financial statements in the Exchange Act Reports of Party A or
(B) assign this Agreement at its own cost to another entity that has agreed to
take the actions described in clause (A) of this sentence with respect to itself
(and which has the same or better rating from the Rating Agencies as Party A as
of the date of such assignment). For the avoidance of doubt, Party A is not
required to take any action pursuant to this paragraph and the failure of Party
A to take any such action will not constitute an Event of Default under this
Agreement.

As used in this Agreement the following words shall have the following meanings:

"DEPOSITOR" shall mean Merrill Lynch Mortgage Investors, Inc.

"EDGAR" shall mean the Commission's Electronic Data Gathering, Analysis and
Retrieval system.

"EXCHANGE ACT" shall mean the Securities Exchange Act of 1934, as amended and
the rules and regulations promulgated thereunder

"EXCHANGE ACT REPORTS" shall mean all Distribution Reports on Form 10-D, Current
Reports on Form 8-K and Annual Reports on Form 10-K that are to be filed with
respect to Party B pursuant to the Exchange Act.

"PROSPECTUS SUPPLEMENT" shall mean the prospectus supplement prepared in
connection with the public offering and sale of the Offered Certificates.

                                       N-7

<PAGE>

"RATING AGENCY" shall mean each of Standard & Poor's, a division of The
McGraw-Hill Companies, Inc. and Moody's Investors Service, Inc. If any such
organization or a successor is no longer in existence, "Rating Agency" shall be
such nationally recognized statistical rating organization, or other comparable
Person, as is designated by the Depositor, notice of which designation shall be
given to the Trustee. References herein to a given rating category of a Rating
Agency shall mean such rating category without giving effect to any modifiers.

"REGULATION AB" shall mean the Asset Backed Securities Regulation AB, 17 C.F.R.
Sections 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. 1,506-1,631 (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.

          (r) Merrill Lynch Mortgage Lending, Inc. ("MLML") agrees and
acknowledges that amounts paid hereunder are not intended to benefit the holder
of any class of certificates rated by any rating agency if such holder is MLML
or any of its affiliates. If MLML or any of its affiliates receives any such
amounts, it will promptly remit (or, if such amounts are received by an
affiliate of MLML, MLML hereby agrees that it will cause such affiliate to
promptly remit) such amounts to the Securities Administrator, whereupon such
Securities Administrator will promptly remit such amounts to MSCS. MLML further
agrees to provide notice to MSCS upon any remittance to the Securities
Administrator.

          (s) The "AUTOMATIC EARLY TERMINATION" provisions of Section 6(a) will
not apply to Party A and will not apply to Party B.

          (t) MULTIBRANCH PARTY. For the purpose of Section 10(c):

               Party A is not a Multibranch Party.

               Party B is not a Multibranch Party.

          (u) AGREEMENT TO DELIVER DOCUMENTS. For the purpose of Sections
4(a)(i) and (ii), each party agrees to deliver the following documents, as
applicable:

          (i)  Tax forms, documents or certificates to be delivered are:

<TABLE>
<CAPTION>
   PARTY REQUIRED
TO DELIVER DOCUMENT          FORM/DOCUMENT/CERTIFICATE                  DATE BY WHICH TO BE DELIVERED
-------------------   --------------------------------------   -----------------------------------------------
<S>                   <C>                                      <C>
Party A               A correct, complete and duly executed    (i)  Upon entering into this Agreement, (ii)
                         IRS Form W-9.                              promptly upon reasonable demand by Party
                                                                    B, and (iii) promptly upon learning that
                                                                    any such Form previously provided by Party
                                                                    A has become obsolete or incorrect.
</TABLE>

                                       N-8

<PAGE>

<TABLE>
<CAPTION>
   PARTY REQUIRED
TO DELIVER DOCUMENT          FORM/DOCUMENT/CERTIFICATE                  DATE BY WHICH TO BE DELIVERED
-------------------   --------------------------------------   -----------------------------------------------
<S>                   <C>                                      <C>
Party B               (i)  A correct, complete and duly        (a)  With respect to clause (i) of the adjacent
                           executed IRS Form W-9 (or any            column, the Securities Administrator shall
                           successor thereto) that                  apply for the employer identification
                           eliminates U.S. federal                  number of the Trust promptly upon entering
                           withholding and backup                   into this Agreement and deliver the
                           withholding tax on payments under        related correct, complete and duly
                           this Agreement, and (ii) if              executed IRS Form W-9 promptly upon
                           requested by Party A, a correct,         receipt, and in any event, no later than
                           complete and duly executed Form          the first Payment Date of this
                           W-8IMY.                                  Transaction; (b) in the case of a W-8IMY,
                                                                    before December 31 of each third
                                                                    succeeding calendar year, (c) promptly
                                                                    upon reasonable demand by Party A, and (d)
                                                                    promptly upon actual knowledge that any
                                                                    such Form previously provided by Party B
                                                                    has become obsolete or incorrect.
</TABLE>

          (ii) Other documents to be delivered are:-

<TABLE>
<CAPTION>
                                                                                                                      COVERED BY
   PARTY REQUIRED                                                                                                    SECTION 3(D)
TO DELIVER DOCUMENT          FORM/DOCUMENT/CERTIFICATE                  DATE BY WHICH TO BE DELIVERED               REPRESENTATION
-------------------   --------------------------------------   -----------------------------------------------   -------------------
<S>                   <C>                                      <C>                                               <C>
Party A and Party B   Either (1) a signature booklet           The earlier of the fifth Business Day after the   Yes
                         containing secretary's certificate       Trade Date of the first Transaction or upon
                         and resolutions ("authorizing            execution of this Agreement and as deemed
                         resolutions") authorizing the party      necessary for any further documentation.
                         to enter into derivatives
                         transactions of the type
                         contemplated by the parties or (2)
                         a secretary's certificate,
                         authorizing resolutions and
                         incumbency certificate, in either
                         case, for such party and any Credit
                         Support Provider of such party
                         reasonably satisfactory in form and
                         substance to the other party.

Party B               An executed copy of the Pooling and      Upon execution of this Agreement.                 Yes
                         Servicing Agreement ("PSA"), dated
                         as of July 1, 2007, among, inter
                         alia, Merrill Lynch Mortgage
                         Investors, Inc., as Depositor,
                         Wells Fargo Bank, National
                         Association, as Master Servicer and
                         Securities Administrator and HSBC
                         Bank USA, National Association, as
                         Trustee.
</TABLE>

                                       N-9

<PAGE>

<TABLE>
<CAPTION>
                                                                                                                      COVERED BY
   PARTY REQUIRED                                                                                                    SECTION 3(D)
TO DELIVER DOCUMENT          FORM/DOCUMENT/CERTIFICATE                  DATE BY WHICH TO BE DELIVERED               REPRESENTATION
-------------------   --------------------------------------   -----------------------------------------------   -------------------
<S>                   <C>                                      <C>                                               <C>
Party A and           An opinion of counsel reasonably         As soon as practicable after the execution of     No
   Party B               satisfactory in form and substance       this Agreement.
                         to the other party.
</TABLE>

                                      N-10

<PAGE>

Please confirm that the foregoing correctly sets forth the terms of our
agreement by executing this Confirmation and returning it to us.

Best Regards,

MORGAN STANLEY CAPITAL SERVICES INC.

By:
    ---------------------------------
Name:
Title:

WELLS FARGO BANK, NATIONAL
   ASSOCIATION, a national banking
   association, not individually, but
   solely as Securities Administrator
   on behalf of the Merrill Lynch
   Alternative Note Asset Trust,
   Series 2007-OAR4 Mortgage
   Pass-Through Certificates

By:
    ---------------------------------
Name:
Title:

MERRILL LYNCH MORTGAGE LENDING, INC.

By:
    ---------------------------------
Name:
Title:

                                      N-11

<PAGE>

                                   SCHEDULE A

<TABLE>
<CAPTION>
            CALCULATION PERIOD
-----------------------------------------
(FROM AND INCLUDING)   (TO BUT EXCLUDING)   STRIKE RATE   NOTIONAL AMOUNT ($)
--------------------   ------------------   -----------   -------------------
<S>                    <C>                  <C>           <C>
   Effective Date          08/25/2007          10.030         346,530,000
     07/25/2007            08/25/2007           6.351         338,986,734
     08/25/2007            09/25/2007           6.578         331,606,622
     09/25/2007            10/25/2007           6.351         324,387,084
     10/25/2007            11/25/2007           6.578         317,324,566
     11/25/2007            12/25/2007           6.351         310,415,597
     12/25/2007            01/25/2008           6.351         303,656,781
     01/25/2008            02/25/2008           6.822         297,044,799
     02/25/2008            03/25/2008           6.351         290,576,407
     03/25/2008            04/25/2008           6.579         284,248,433
     04/25/2008         Termination Date        6.352         278,057,777
</TABLE>

                                      N-12

<PAGE>

                                    EXHIBIT O

                       ADDITIONAL DISCLOSURE NOTIFICATION

Merrill Lynch Mortgage Investors, Inc.
250 Vesey Street
4 World Financial Center, 10th Floor
New York, New York 10080

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

RE: Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4
    **Additional Form [10-D][10-K][8-K] Disclosure** Required

Ladies and Gentlemen:

          In accordance with Section 3.18(b) of the Pooling and Servicing
Agreement, dated as of July 1, 2007, among Merrill Lynch Mortgage Investors,
Inc., as depositor, Wells Fargo Bank, N.A., as master servicer and securities
administrator and HSBC Bank USA, National Association, as trustee, the
undersigned, as [_____], hereby notifies you that certain events have come to
our attention that [will] [may] need to be disclosed on Form [10-D][10-K][8-K].

Description of Additional Form [10-D][10-K][8-K] Disclosure:

List of any Attachments hereto to be included in the Additional Form
[10-D][10-K][8-K] Disclosure:

     Any inquiries related to this notification should be directed to [_____],
phone number: [_____]; email address: [_____].

                                        [NAME OF PARTY],
                                        as [role]

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:

                                       O-1

<PAGE>

                                    EXHIBIT P

                   FORM OF ITEM 1123 CERTIFICATION OF SERVICER

                                     [DATE]

Merrill Lynch Mortgage Investors, Inc.
250 Vesey Street
4 World Financial Center, 10th Floor
New York, New York 10080

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

Re: Merrill Lynch Alternative Note Asset Trust, Series 2007-OAR4
    Mortgage Pass-Through Certificates

I, [identify name of certifying individual], [title of certifying individual] of
[name of servicing company] (the "Servicer"), hereby certify that:

          (1) A review of the activities of the Servicer during the preceding
calendar year and of the performance of the Servicer under the Pooling and
Servicing Agreement (the "Servicing Agreement") has been made under my
supervision; and

          (2) To the best of my knowledge, based on such review, the Servicer
has fulfilled all its obligations under the Servicing Agreement in all material
respects throughout such year or a portion thereof[, or, if there has been a
failure to fulfill any such obligation in any material respect, I have specified
below each such failure known to me and the nature and status thereof].

Date:
      -------------------------------

                                        [Servicer]

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                       P-1

<PAGE>

                                   EXHIBIT Q-1

                         ADDITIONAL FORM 10-D DISCLOSURE

<TABLE>
<CAPTION>
                                   ADDITIONAL FORM 10-D DISCLOSURE
----------------------------------------------------------------------------------------------------
               ITEM ON FORM 10-D                                   PARTY RESPONSIBLE
-----------------------------------------------   --------------------------------------------------
<S>                                               <C>
         ITEM 1: DISTRIBUTION AND POOL
            PERFORMANCE INFORMATION

Information included in the [Monthly Statement]                     Master Servicer
                                                                       Servicer
                                                               Securities Administrator

 Any information required by 1121 which is NOT                         Depositor
      included on the [Monthly Statement]

           ITEM 2: LEGAL PROCEEDINGS

Any legal proceeding pending against the
following entities or their respective
property, that is material to
Certificateholders, including any proceeding
known to be contemplated by governmental
authorities:

-    Issuing Entity (Trust Fund)                  Trustee, Master Servicer, Securities Administrator
                                                                     and Depositor

-    Sponsor (Seller)                               Seller (if a party to the Pooling and Servicing
                                                                Agreement) or Depositor

-    Depositor                                                         Depositor

-    Trustee                                                            Trustee

-    Securities Administrator                                  Securities Administrator

-    Master Servicer                                                Master Servicer

-    Custodian                                                         Custodian

-    1110(b) Originator                                                Depositor

-    Any 1108(a)(2) Servicer (other than the                           Servicer
     Master Servicer or Securities
     Administrator)

-    Any other party contemplated by 1100(d)(1)                        Depositor

     ITEM 3: SALE OF SECURITIES AND USE OF                             Depositor
                   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.
</TABLE>

                                      Q-1-1

<PAGE>

<TABLE>
<CAPTION>
                                   ADDITIONAL FORM 10-D DISCLOSURE
----------------------------------------------------------------------------------------------------
               ITEM ON FORM 10-D                                   PARTY RESPONSIBLE
-----------------------------------------------   --------------------------------------------------
<S>                                               <C>
    ITEM 4: DEFAULTS UPON SENIOR SECURITIES                    Securities Administrator
                                                                        Trustee

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)

   ITEM 5: SUBMISSION OF MATTERS TO A VOTE OF                  Securities Administrator
                SECURITY HOLDERS                                        Trustee

Information from Item 4 of Part II of Form 10-Q

  ITEM 6: SIGNIFICANT OBLIGORS OF POOL ASSETS                          Depositor

  Item 1112(b) - Significant Obligor Financial
                  Information*

*    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.

    ITEM 7: SIGNIFICANT ENHANCEMENT PROVIDER
                  INFORMATION

 Item 1114(b)(2) - Credit Enhancement Provider
             Financial Information*

-    Determining applicable disclosure                                 Depositor
     threshold

-    Requesting required financial information                         Depositor
     (including any required accountants'
     consent to the use thereof) or effecting
     incorporation by reference

     Item 1115(b) - Derivative Counterparty
             Financial Information*

-    Determining current maximum probable                              Depositor
     exposure

-    Determining current significance                                  Depositor
     percentage

-    Requesting required financial information                         Depositor
     (including any required accountants'
     consent to the use thereof) 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.
</TABLE>

                                      Q-1-2

<PAGE>

<TABLE>
<CAPTION>
                                   ADDITIONAL FORM 10-D DISCLOSURE
----------------------------------------------------------------------------------------------------
               ITEM ON FORM 10-D                                   PARTY RESPONSIBLE
-----------------------------------------------   --------------------------------------------------
<S>                                               <C>
           ITEM 8: OTHER INFORMATION                   Any party responsible for the applicable
                                                               Form 8-K Disclosure item

Disclose any information required to be
reported on Form 8-K during the period covered
by the Form 10-D but not reported

                ITEM 9: EXHIBITS

    Monthly Statement to Certificateholders                    Securities Administrator

  Exhibits required by Item 601 of Regulation                          Depositor
        S-K, such as material agreements
</TABLE>

                                      Q-1-3
<PAGE>

                                   EXHIBIT Q-2

                         ADDITIONAL FORM 10-K DISCLOSURE

<TABLE>
<CAPTION>
                                   ADDITIONAL FORM 10-K DISCLOSURE
----------------------------------------------------------------------------------------------------
                   ITEM ON FORM 10-K                                   PARTY RESPONSIBLE
------------------------------------------------   -------------------------------------------------
<S>                                                <C>
       ITEM 1B: UNRESOLVED STAFF COMMENTS                              Depositor

           ITEM 9B: OTHER INFORMATION                Any party responsible for disclosure items on
Disclose any information required to be reported                        Form 8-K
on Form 8-K during the fourth quarter covered
by the Form 10-K but not reported

ITEM 15: EXHIBITS, FINANCIAL STATEMENT SCHEDULES                Securities Administrator
                                                                       Depositor

  REG AB ITEM 1112(B): SIGNIFICANT OBLIGORS OF
                   POOL ASSETS

Significant Obligor Financial Information*                             Depositor

*    This information need only be reported on
     the Form 10-K if updated information is
     required pursuant to the Item.

   REG AB ITEM 1114(B)(2): CREDIT ENHANCEMENT
         PROVIDER FINANCIAL INFORMATION

-    Determining applicable disclosure threshold                       Depositor

-    Requesting required financial information                         Depositor
     (including any required accountants'
     consent to the use thereof) or effecting
     incorporation by reference

*    This information need only be reported on
     the Form 10-K if updated information is
     required pursuant to the Item.

  REG AB ITEM 1115(B): DERIVATIVE COUNTERPARTY
              FINANCIAL INFORMATION

-    Determining current maximum probable                              Depositor
     exposure

-    Determining current significance percentage                       Depositor

-    Requesting required financial information                         Depositor
     (including any required accountants'
     consent to the use thereof) or effecting
     incorporation by reference

*    This information need only be reported on
     the Form 10-K if updated information is
     required pursuant to the Item.

       REG AB ITEM 1117: LEGAL PROCEEDINGS

Any legal proceeding pending against the
following entities or their respective property,
that is material to Certificateholders,
including any proceeding known to be
contemplated by
</TABLE>

                                      Q-2-1

<PAGE>

<TABLE>
<CAPTION>
                                   ADDITIONAL FORM 10-K DISCLOSURE
----------------------------------------------------------------------------------------------------
                   ITEM ON FORM 10-K                                   PARTY RESPONSIBLE
------------------------------------------------   -------------------------------------------------
<S>                                                <C>
governmental authorities:

-    Issuing Entity (Trust Fund)                         Trustee, Master Servicer, Securities
                                                              Administrator and Depositor

-    Sponsor (Seller)                                    Seller (if a party to the Pooling and
                                                           Servicing Agreement) or Depositor

-    Depositor                                                         Depositor

-    Trustee                                                            Trustee

-    Securities Administrator                                  Securities Administrator

-    Master Servicer                                                Master Servicer

-    Custodian                                                         Custodian

-    1110(b) Originator                                                Depositor

-    Any 1108(a)(2) Servicer (other than the                           Servicer
     Master Servicer or Securities
     Administrator)

-    Any other party contemplated by 1100(d)(1)                        Depositor

REG AB ITEM 1119: AFFILIATIONS AND RELATIONSHIPS

Whether (a) the Sponsor (Seller), Depositor                       Depositor as to (a)
or Issuing  Entity is an affiliate of the                      Sponsor/Seller as to (a)
following parties, and (b) to the extent
known and material, any of the following
parties are affiliated with one another:

-    Master Servicer                                                Master Servicer

-    Securities Administrator                                  Securities Administrator

-    Trustee                                                            Trustee

-    Any other 1108(a)(3) servicer                                     Servicer

-    Any 1110 Originator                                           Depositor/Sponsor

-    Any 1112(b) Significant Obligor                               Depositor/Sponsor

-    Any 1114 Credit Enhancement Provider                          Depositor/Sponsor

-    Any 1115 Derivate Counterparty Provider                       Depositor/Sponsor

-    Any other 1101(d)(1) material party                           Depositor/Sponsor

Whether there are any "outside the ordinary                       Depositor as to (a)
course business arrangements" other than would                 Sponsor/Seller as to (a)
be obtained in an arm's length transaction
between (a) the Sponsor (Seller), Depositor or
Issuing Entity on the one hand, and (b) any of
the following parties (or their affiliates) on
the other hand, that exist currently or within
the past two years and that are material to a
Certificateholder's understanding of the
Certificates:

-    Master Servicer                                                Master Servicer

-    Securities Administrator                                  Securities Administrator

-    Trustee                                                           Depositor

-    Any other 1108(a)(3) servicer                                     Servicer

-    Any 1110 Originator                                           Depositor/Sponsor

-    Any 1112(b) Significant Obligor                               Depositor/Sponsor
</TABLE>

                                      Q-2-2

<PAGE>

<TABLE>
<CAPTION>
                                   ADDITIONAL FORM 10-K DISCLOSURE
----------------------------------------------------------------------------------------------------
                   ITEM ON FORM 10-K                                   PARTY RESPONSIBLE
------------------------------------------------   -------------------------------------------------
<S>                                                <C>
-    Any 1114 Credit Enhancement Provider                          Depositor/Sponsor

-    Any 1115 Derivate Counterparty Provider                       Depositor/Sponsor

-    Any other 1101(d)(1) material party                           Depositor/Sponsor

Whether there are any specific relationships involving                Depositor as to (a)
the transaction or the pool assets between (a) the                 Sponsor/Seller as to (a)
Sponsor (Seller), Depositor or Issuing Entity on the
one hand, and (b) any of the following parties (or
their  affiliates) on the other hand, that exist
currently or within the past two years and that are
material:

-    Master Servicer                                                Master Servicer

-    Securities Administrator                                   Securities Administrator

-    Trustee                                                           Depositor

-    Any other 1108(a)(3) servicer                                     Servicer

-    Any 1110 Originator                                           Depositor/Sponsor

-    Any 1112(b) Significant Obligor                               Depositor/Sponsor

-    Any 1114 Credit Enhancement Provider                          Depositor/Sponsor

-    Any 1115 Derivate Counterparty Provider                       Depositor/Sponsor

-    Any other 1101(d)(1) material party                           Depositor/Sponsor
</TABLE>

                                      Q-2-3

<PAGE>

                                   EXHIBIT Q-3

                         FORM 8-K DISCLOSURE INFORMATION

<TABLE>
<CAPTION>
                                   FORM 8-K DISCLOSURE INFORMATION
----------------------------------------------------------------------------------------------------
                ITEM ON FORM 8-K                                   PARTY RESPONSIBLE
------------------------------------------------   -------------------------------------------------
<S>                                                <C>
   ITEM 1.01- ENTRY INTO A MATERIAL DEFINITIVE                        All parties
                    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

 ITEM 1.02- TERMINATION OF A MATERIAL DEFINITIVE                      All parties
                   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.

      ITEM 1.03- BANKRUPTCY OR RECEIVERSHIP                            Depositor

Disclosure is required regarding the bankruptcy
or receivership, with respect to any of the
following:

-    Sponsor (Seller)                                          Depositor/Sponsor (Seller)

-    Depositor                                                         Depositor

-    Master Servicer                                                Master Servicer

-    Affiliated Servicer                                               Servicer

-    Other Servicer servicing 20% or more of the                       Servicer
     pool assets at the time of the report

-    Other material servicers                                          Servicer

-    Trustee                                                            Trustee

-    Securities Administrator                                   Securities Administrator

-    Significant Obligor                                               Depositor

-    Credit Enhancer (10% or more)                                     Depositor

-    Derivative Counterparty                                           Depositor
</TABLE>

                                      Q-3-1

<PAGE>

<TABLE>
<CAPTION>
                                   FORM 8-K DISCLOSURE INFORMATION
----------------------------------------------------------------------------------------------------
                ITEM ON FORM 8-K                                   PARTY RESPONSIBLE
------------------------------------------------   -------------------------------------------------
<S>                                                <C>
-    Custodian                                                         Custodian

ITEM 2.04- TRIGGERING EVENTS THAT ACCELERATE OR                        Depositor
  INCREASE A DIRECT FINANCIAL OBLIGATION OR AN                      Master Servicer
      OBLIGATION UNDER AN OFF-BALANCE SHEET                    Securities Administrator
                   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
monthly statements to the certificateholders.

  ITEM 3.03- MATERIAL MODIFICATION TO RIGHTS OF               Securities Administrator
                SECURITY HOLDERS                                        Trustee
                                                                       Depositor

Disclosure is required of any material
modification to documents defining the rights of
Certificateholders, including the Pooling and
Servicing Agreement.

      ITEM 5.03- AMENDMENTS OF ARTICLES OF                             Depositor
 INCORPORATION OR BYLAWS; CHANGE OF FISCAL YEAR

Disclosure is required of any amendment "to the
governing documents of the issuing entity".

 ITEM 6.01- ABS INFORMATIONAL AND COMPUTATIONAL                        Depositor
                    MATERIAL

   ITEM 6.02- CHANGE OF SERVICER OR SECURITIES                Master Servicer/Securities
                  ADMINISTRATOR                                Administrator/Depositor/
                                                                   Servicer/Trustee

Requires disclosure of any removal, replacement,
substitution or addition of any master servicer,
affiliated servicer, other servicer servicing
10% or more of pool assets at time of report,
other material servicers or trustee.

Reg AB disclosure about any new servicer or                         Servicer/Master
master servicer is also required.                                  Servicer/Depositor

Reg AB disclosure about any new Trustee is also                         Trustee
required.

   ITEM 6.03- CHANGE IN CREDIT ENHANCEMENT OR              Depositor/Securities Administrator
                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
</TABLE>

                                      Q-3-2

<PAGE>

<TABLE>
<CAPTION>
                                   FORM 8-K DISCLOSURE INFORMATION
----------------------------------------------------------------------------------------------------
                ITEM ON FORM 8-K                                   PARTY RESPONSIBLE
------------------------------------------------   -------------------------------------------------
<S>                                                <C>
enhancement provided. Applies to external credit
enhancements as well as derivatives.

Reg AB disclosure about any new enhancement                            Depositor
provider is also required.

      ITEM 6.04- FAILURE TO MAKE A REQUIRED                 Securities Administrator Trustee
                  DISTRIBUTION

  ITEM 6.05- SECURITIES ACT UPDATING DISCLOSURE                        Depositor

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.

If there are any new servicers or originators                          Depositor
required to be disclosed under Regulation AB as
a result of the foregoing, provide the
information called for in Items 1108 and 1110
respectively.

          ITEM 7.01- REG FD DISCLOSURE                                All parties

            ITEM 8.01- OTHER EVENTS                                    Depositor

Any event, with respect to which information is
 not otherwise called for in Form 8-K, that the
        registrant deems of importance to
               certificateholders.

  ITEM 9.01- FINANCIAL STATEMENTS AND EXHIBITS       Responsible party for reporting/disclosing the
                                                             financial statement or exhibit
</TABLE>

                                      Q-3-3

<PAGE>

                                    EXHIBIT R

                             FORM OF SWAP AGREEMENT
<PAGE>

<TABLE>
<S>                 <C>
DATE:               August 10, 2007

TO:                 Wells Fargo Bank, National Association, not individually,
                    but solely as Supplemental Interest Trust Trustee on behalf
                    of the Supplemental Interest Trust relating to the Merrill
                    Lynch Alternative Note Asset Trust, Series 2007-OAR4
                    Mortgage Pass-Through Certificates

ATTENTION:          Client Manager - MANA 2007-OAR4

TELEPHONE:          (410) 884-2000

FACSIMILE:          (410) 715-2380

FROM:               New York Derivative Client Services Group

TELEPHONE:          (212) 761-2996

FACSIMILE:          (646) 202-9190

SUBJECT:            Fixed Income Derivatives Confirmation

REFERENCE NUMBER:   HRQ51
</TABLE>

The purpose of this letter agreement (this "CONFIRMATION") is to confirm the
terms and conditions of the Swap Transaction entered into on the Trade Date
specified below (the "TRANSACTION") between Morgan Stanley Capital Services Inc.
("PARTY A") and Wells Fargo Bank, National Association, not individually, but
solely as Supplemental Interest Trust Trustee on behalf of the Supplemental
Interest Trust relating to the Merrill Lynch Alternative Note Asset Trust,
Series 2007-OAR4 Mortgage Pass-Through Certificates (the "Supplemental Interest
Trust Trustee") under the Pooling and Servicing Agreement, dated and effective
as of July 1, 2007, among, Merrill Lynch Mortgage Investors, as Depositor, Wells
Fargo Bank, National Association, as Master Servicer and Securities
Administrator and HSBC Bank USA, National Association, as Trustee (the "PSA").

The definitions and provisions contained in the 2006 ISDA Definitions (the
"DEFINITIONS"), as published by the International Swaps and Derivatives
Association, Inc., are incorporated into this Confirmation. In the event of any
inconsistency between the Definitions and this Confirmation, this Confirmation
will govern. Terms capitalized but not defined in this Confirmation (including
the Definitions) have the meanings attributed to them in the PSA.

This Confirmation constitutes a "Confirmation" as referred to in, and
supplements, forms part of and is subject to, the ISDA Master Agreement dated as
of August 10, 2007, as amended and supplemented from time to time (the
"AGREEMENT"), between Party A and Party B. All provisions contained in the
Agreement govern this Confirmation except as expressly modified below.

1.   The terms of the particular Transaction to which this Confirmation relates
     are as follows:

<TABLE>
<S>                                          <C>
   Notional Amount:.......................   With respect to any Calculation Period,
                                             the notional amount set forth for such
                                             Calculation Period in Schedule I attached
                                             hereto.

   Trade Date:............................   August 7, 2008

   Effective Date:........................   June 25, 2008

   Termination Date:......................   March 25, 2013, which for the purpose of
                                             the final Fixed Rate Payer Calculation
                                             Period is subject to No Adjustment, and
                                             for the purpose of the final Floating Rate
                                             Payer Calculation Period is subject to
</TABLE>

                                          R-2
<PAGE>

<TABLE>
<S>                                          <C>
                                             adjustment in accordance with the
                                             Following Business Day Convention.

FIXED AMOUNTS:

   Fixed Rate Payer:......................   Wells Fargo Bank, National Association,
                                             not individually, but solely as
                                             Supplemental Interest Trust Trustee on
                                             behalf of the Supplemental Interest Trust
                                             relating to the Merrill Lynch Alternative
                                             Note Asset Trust, Series 2007-OAR4
                                             Mortgage Pass-Through Certificates ("PARTY
                                             B").

   Fixed Rate Payer Early Payment Dates:..   On the day which is one (1) Business Day
                                             prior to each Fixed Rate Payer Period End
                                             Date.

   Fixed Rate Payer Period End
   Dates:.................................   The 25th calendar day of each month during
                                             the Term of this Transaction, commencing
                                             July 25, 2008, in each case subject to No
                                             Adjustment.

   Fixed Rate:............................   5.40%

   Fixed Amount:..........................   To be determined in accordance with the
                                             following formula: Fixed Rate * Notional
                                             Amount * Fixed Rate Day Count Fraction.

   Fixed Rate Day Count Fraction:.........   30/360

FLOATING AMOUNTS:

   Floating Rate Payer:...................   Party A

   Floating Rate Payer Early Payment
   Dates:.................................   On the day which is one (1) Business Day
                                             prior to each Fixed Rate Payer Period End
                                             Date.

   Floating Rate Payer Period End
   Dates:.................................   The 25th calendar day of each month during
                                             the Term of this Transaction, commencing
                                             July 25, 2008, in each case subject to
                                             adjustment in accordance with the
                                             Following Business Day Convention.

   Floating Rate Option:..................   USD-LIBOR-BBA

   Floating Amount:.......................   To be determined in accordance with the
                                             following formula:

                                             Floating Rate * Notional Amount * Floating
                                             Rate Day Count Fraction.

   Designated Maturity:...................   One month
</TABLE>

                                          R-3

<PAGE>

<TABLE>
<S>                                          <C>
   Floating Rate Day Count Fraction:......   Actual/360

   Reset Dates:...........................   The first day of each Calculation Period.

   Compounding:...........................   Inapplicable

   Business Days:.........................   New York

INITIAL EXCHANGE:

   Initial Exchange Amount:...............   With respect to Party A, $[_______]. With
                                             respect to Party B, $[_______].

   Initial Exchange Amount Payment Date:..   August 10, 2007
</TABLE>

2.   Account Details and Settlement Information:

          Payments to Party A:

          Citibank, New York
          ABA No.: 021 000 089
          Account No.: 4072-4601
          Account Name: Morgan Stanley Capital Services Inc.

          Payments to Party B:
          Wells Fargo Bank, National Association
          ABA No.: 121 000 248
          Account No: 3970771416
          Acct Name: SAS Clearing
          Ref:  FFC: 53168101, MANA 2007-OAR4 (swap)

3.   SUPPLEMENT INTEREST TRUST TRUSTEE CAPACITY. It is expressly understood and
     agreed by the parties hereto that insofar as this Confirmation is executed
     by Wells Fargo Bank, National Association (i) this Confirmation is executed
     and delivered by Wells Fargo Bank, National Association not in its
     individual capacity but solely as Supplemental Interest Trust Trustee of
     the Supplemental Interest Trust under the PSA in the exercise of the powers
     and authority conferred upon and invested in it as Supplemental Interest
     Trust Trustee thereunder, (ii) each of the representations, undertakings
     and agreements herein made on behalf of Party B is made and intended not as
     a personal representation, undertaking or agreement of the Supplemental
     Interest Trust Trustee but is made and intended for the purpose of binding
     only the Trust, and (iii) under no circumstances shall Wells Fargo Bank,
     National Association in its individual capacity be personally liable for
     the payment of any indebtedness or expenses or be personally liable for the
     breach or failure of any obligation, representation, warranty or covenant
     made or undertaken under this Confirmation.

                                          R-4

<PAGE>

We are very pleased to have entered into this Transaction with you and we look
forward to completing other transactions with you in the near future.

                                        Very truly yours,

                                        MORGAN STANLEY CAPITAL SERVICES INC.

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:

Party B, acting through its duly authorized signatory, hereby agrees to, accepts
and confirms the terms of the foregoing as of the Trade Date.

                                        WELLS FARGO BANK, NATIONAL
                                            ASSOCIATION, not individually, but
                                            solely as Supplemental Interest
                                            Trust Trustee on behalf of the
                                            Supplemental Interest Trust relating
                                            to the Merrill Lynch Alternative
                                            Note Asset Trust, Series 2007-OAR4
                                            Mortgage Pass-Through Certificates

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:

                                      R-5

<PAGE>

                                   SCHEDULE I

<TABLE>
<CAPTION>
LINE           CALCULATION PERIOD          NOTIONAL AMOUNT ($)
----   ---------------------------------   -------------------
<S>    <C>              <C>                <C>
1.     Effective Date   07/25/2008             292,859,521
2.     07/25/2008       08/25/2008             285,283,569
3.     08/25/2008       09/25/2008             278,308,541
4.     09/25/2008       10/25/2008             272,178,977
5.     10/25/2008       11/25/2008             266,585,752
6.     11/25/2008       12/25/2008             261,293,936
7.     12/25/2008       01/25/2009             256,400,096
8.     01/25/2009       02/25/2009             251,919,601
9.     02/25/2009       03/25/2009             247,468,848
10.    03/25/2009       04/25/2009             242,375,013
11.    04/25/2009       05/25/2009             236,697,975
12.    05/25/2009       06/25/2009             230,813,798
13.    06/25/2009       07/25/2009             224,923,770
14.    07/25/2009       08/25/2009             219,318,600
15.    08/25/2009       09/25/2009             214,006,983
16.    09/25/2009       10/25/2009             209,063,640
17.    10/25/2009       11/25/2009             204,417,589
18.    11/25/2009       12/25/2009             200,034,191
19.    12/25/2009       01/25/2010             195,957,574
20.    01/25/2010       02/25/2010             192,198,131
21.    02/25/2010       03/25/2010             188,511,788
22.    03/25/2010       04/25/2010             184,448,805
23.    04/25/2010       05/25/2010             179,636,700
24.    05/25/2010       06/25/2010             173,389,507
25.    06/25/2010       07/25/2010             166,249,918
26.    07/25/2010       08/25/2010             159,711,651
27.    08/25/2010       09/25/2010             154,396,007
28.    09/25/2010       10/25/2010             149,949,604
29.    10/25/2010       11/25/2010             146,013,078
30.    11/25/2010       12/25/2010             142,285,209
31.    12/25/2010       01/25/2011             138,786,049
32.    01/25/2011       02/25/2011             135,531,594
33.    02/25/2011       03/25/2011             132,355,456
34.    03/25/2011       04/25/2011             128,895,209
35.    04/25/2011       05/25/2011             125,181,845
36.    05/25/2011       06/25/2011             121,315,527
37.    06/25/2011       07/25/2011             117,328,520
38.    07/25/2011       08/25/2011             113,372,444
39.    08/25/2011       09/25/2011             109,298,216
40.    09/25/2011       10/25/2011             103,149,091
41.    10/25/2011       11/25/2011              93,526,456
42.    11/25/2011       12/25/2011              84,291,027
43.    12/25/2011       01/25/2012              76,800,741
44.    01/25/2012       02/25/2012              70,712,330
45.    02/25/2012       03/25/2012              65,495,646
46.    03/25/2012       04/25/2012              60,428,679
47.    04/25/2012       05/25/2012              55,495,782
48.    05/25/2012       06/25/2012              50,633,881
</TABLE>

                                       R-6

<PAGE>

<TABLE>
<S>    <C>              <C>                <C>
49.    06/25/2012       07/25/2012              45,806,832
50.    07/25/2012       08/25/2012              41,452,454
51.    08/25/2012       09/25/2012              37,709,924
52.    09/25/2012       10/25/2012              34,571,307
53.    10/25/2012       11/25/2012              24,177,727
54.    11/25/2012       12/25/2012              22,171,594
55.    12/25/2012       01/25/2013              20,457,188
56.    01/25/2013       02/25/2013              18,927,055
57.    02/25/2013       Termination Date        17,430,227
</TABLE>

                                       R-7
<PAGE>

                                    SCHEDULE
                                     TO THE
                           1992 ISDA MASTER AGREEMENT
                           DATED AS OF AUGUST 10, 2007
                                     BETWEEN

                      MORGAN STANLEY CAPITAL SERVICES INC.
                             A DELAWARE CORPORATION
                                   ("PARTY A")

                                       AND

                     WELLS FARGO BANK, NATIONAL ASSOCIATION
  A NATIONAL BANKING ASSOCIATION, NOT INDIVIDUALLY, BUT SOLELY AS SUPPLEMENTAL
  INTEREST TRUST TRUSTEE ON BEHALF OF THE SUPPLEMENTAL INTEREST TRUST RELATING
               TO THE MERRILL LYNCH ALTERNATIVE NOTE ASSET TRUST,
              SERIES 2007-OAR4 MORTGAGE PASS-THROUGH CERTIFICATES,
                                   ("PARTY B")

PART 1. TERMINATION PROVISIONS.

     (a)  "SPECIFIED ENTITY" means in relation to Party A for the purpose of:

               Section 5(a)(v), None Specified
               Section 5(a)(vi), None Specified
               Section 5(a)(vii), None Specified
               Section 5(b)(iv), None Specified

          and in relation to Party B for the purpose of:

               Section 5(a)(v), None Specified
               Section 5(a)(vi), None Specified
               Section 5(a)(vii), None Specified
               Section 5(b)(iv), None Specified

     (b)  EVENTS OF DEFAULT. Notwithstanding anything in this Agreement to the
          contrary, the following Events of Default shall apply to the specified
          party:

<TABLE>
<CAPTION>
                                                                  PARTY A          PARTY B
                                                              --------------   --------------
<S>                                                           <C>              <C>
(i)    Section 5(a)(i), Failure to Pay or Deliver             Applicable       Applicable
(ii)   Section 5(a)(ii), Breach of Agreement                  Applicable       Not Applicable
(iii)  Section 5(a)(iii), Credit Support Default              Applicable       Applicable
(iv)   Section 5(a)(iv), Misrepresentation                    Applicable       Not Applicable
(v)    Section 5(a)(v), Default Under Specified Transaction   Not Applicable   Not Applicable
(vi)   Section 5(a)(vi), Cross Default                        Applicable       Not Applicable
(vii)  Section 5(a)(vii), Bankruptcy                          Applicable       Applicable
(viii) Section 5(a)(viii), Merger Without Assumption          Applicable       Applicable
</TABLE>

     provided, however, that with respect to:

          (i)  Section 5(a)(i) (Failure to Pay or Deliver), shall be amended by
               replacing the word "third" with "first."

          (ii) Section 5(a)(iii)(1) (Credit Support Default), as it applies to
               Party B only, shall be deleted in its entirety and replaced with
               the following: "Failure by Party B to comply with or

                                       R-8

<PAGE>

               perform any agreement or obligation to be complied with or
               performed by it in accordance with Paragraph 3(b) of the Credit
               Support Annex if such failure is continuing after any applicable
               grace period has elapsed."

          (iii) Section 5(a)(vi) (Cross Default), "Threshold Amount" means, with
               respect to Party A, 3% of its Credit Support Provider's (or the
               applicable Relevant Entity's) shareholder's equity (as detailed
               in its Credit Support Provider's or the Relevant Entity's most
               recent financial statements).

          (iv) Section 5(a)(vii) (Bankruptcy), (i) clause (2) and (9) shall not
               be applicable to Party B; (ii) clause (4) shall not be applicable
               to Party B if the proceeding or petition is instituted or
               presented by Party A or any of its Affiliates and is in breach of
               Party A's agreement set forth in Part 5(j) of this Schedule;
               (iii) the appointment of a trustee or other secured party by
               Party B or the Certificateholders for the purpose of holding all
               or a substantial portion of the assets of Party B for the benefit
               of the Certificateholders or Party A does not qualify as the
               appointment of a trustee, custodian or similar official under
               clause (6); (iv) a security interest granted by Party B to a
               trustee, collateral agent, custodian or other secured party, as
               applicable (the "Secured Party"), pursuant to an indenture, trust
               agreement, pooling and servicing agreement or other customary
               securitization transaction document (the "Security Agreement"),
               in property of Party B (the "Securitization Collateral")
               supporting a rated securitization transaction (the
               "Securitization"), and the rights of the Secured Party in and to
               the Securitization Collateral for the benefit of the investors in
               the Securitization and/or Party A, is not intended to constitute
               and shall not be treated as a secured party taking possession of
               the assets of Party B for purposes of clause (7); (v) the words
               "seeks or" shall be deleted from clause (6); and (vi) clause (8)
               shall not apply to Party B to the extent that clause (8) relates
               to clauses of Section 5(a)(vii) that are not applicable to Party
               B as a result of the modifications set forth herein.
               Notwithstanding the foregoing, for the avoidance of doubt, the
               deletion of clause (9) is not intended to render clauses (1)
               through (8) inapplicable on the basis that Party B did not
               actively contest or oppose any of the acts referred to in such
               clauses or, in the case of clause (4), if a proceeding or
               petition referred to therein is instituted or presented against
               Party B, on the basis that Party B consented to or acquiesced in
               a judgment of bankruptcy or insolvency or the entry of an order
               for relief or the making of an order for its winding up or
               liquidation as a result of such proceeding or petition.

     (c)  TERMINATION EVENTS. Notwithstanding anything in this Agreement to the
          contrary, the following Termination Events shall apply to the
          specified party:

<TABLE>
<CAPTION>
                                                            PARTY A              PARTY B
                                                      ------------------   ------------------
<S>                                                   <C>                  <C>
(i)   Section 5(b)(i), Illegality                     Applicable           Applicable
(ii)  Section 5(b)(ii), Tax Event                     Applicable           Applicable
(iii) Section 5(b)(iii), Tax Event Upon Merger        Applicable           Applicable
(iv)  Section 5(b)(iv), Credit Event Upon Merger      Not Applicable       Not Applicable
(v)   Section 5(b)(v), Additional Termination Event   Applicable (as set   Applicable (as set
                                                      forth in Part 1(h)   forth in Part 1(h)
                                                      below)               below)
</TABLE>

     provided, however, that with respect to Section 5(b)(iii), Party A shall
     not be entitled to designate an Early Termination Date by reason of a Tax
     Event Upon Merger in respect of which it is the Affected Party.

     (d)  The "AUTOMATIC EARLY TERMINATION" provisions of Section 6(a) will not
          apply to Party A and will not apply to Party B.

                                       R-9

<PAGE>

     (e)  The "TRANSFER TO AVOID TERMINATION EVENT" provisions of 6(b)(ii) will
          apply, provided that the words "or if a Tax Event Upon Merger occurs
          and the Burdened Party is the Affected Party," shall be deleted.

     (f)  PAYMENTS ON EARLY TERMINATION.

          (i)  For the purpose of Section 6(e), "Market Quotation" and "Second
               Method" will apply.

          (ii) Where an Early Termination Date is designated as a result of an
               Event of Default with respect to which Party A is the Defaulting
               Party or a Termination Event under Section 5(b)(iii), Section
               5(b)(iv) or Section 5(b)(v) with respect to which Party A is the
               sole Affected Party, paragraphs (1) through (8) below shall
               apply:

               (1)  The definition of "Market Quotation" shall be deleted in its
                    entirety and replaced with the following:

                    "'MARKET QUOTATION' means, with respect to one or more
                    Terminated Transactions, a Firm Offer which is (1) made by
                    an Eligible Replacement, (2) for an amount, if any, that
                    would be paid to Party B (expressed as a negative number) or
                    by Party B (expressed as a positive number) in consideration
                    of an agreement between Party B and an Eligible Replacement
                    to enter into a transaction (the "REPLACEMENT TRANSACTION")
                    that would have the effect of preserving for such party the
                    economic equivalent of any payment or delivery (whether the
                    underlying obligation was absolute or contingent and
                    assuming the satisfaction of each applicable condition
                    precedent) by the parties under Section 2(a)(i) in respect
                    of such Terminated Transactions or group of Terminated
                    Transactions that would, but for the occurrence of the
                    relevant Early Termination Date, have been required after
                    that date, (3) made on the basis that Unpaid Amounts in
                    respect of the Terminated Transaction or group of
                    Transactions are to be excluded but, without limitation, any
                    payment or delivery that would, but for the relevant Early
                    Termination Date, have been required (assuming satisfaction
                    of each applicable condition precedent) after that Early
                    Termination Date is to be included and (4) made in respect
                    of a Replacement Transaction with terms substantially the
                    same as those of this Agreement as determined by Party B
                    (save for the exclusion of provisions relating to
                    Transactions that are not Terminated Transactions). Party A
                    and Party B will request each Eligible Replacement to
                    provide a Firm Offer to the extent reasonably practicable as
                    of the same day and time (without regard to different time
                    zones). If no Firm Offers are provided, it will be deemed
                    that the Market Quotation in respect of such Terminated
                    Transaction or group of Terminated Transactions cannot be
                    determined.

               (2)  The definition of "Settlement Amount" shall be deleted in
                    its entirety and replaced with the following:

                    "SETTLEMENT AMOUNT" means, with respect to any Early
                    Termination Date, an amount (as determined by Party B in
                    accordance with clauses (a) and (b) below; provided,
                    however, if Party B fails to make such determination
                    promptly, Party A shall have the right to make such
                    determination) equal to:

                         (a) the Termination Currency Equivalent of the amount
                    (whether positive or negative) for each Terminated
                    Transaction or group of Terminated Transactions for which a
                    Market Quotation is determined. If more than one Market
                    Quotation is capable of becoming legally binding upon
                    acceptance, Party B shall accept the Market Quotation that
                    constitutes (1) the highest Market

                                      R-10

<PAGE>

                    Quotation in the case of a payment by an Eligible
                    Replacement to Party B or (2) the lowest Market Quotation in
                    the case of a payment by Party B to an Eligible Replacement;
                    provided, however, if Party B fails to make such
                    determination promptly, Party A shall have the right to make
                    such determination. If only one Market Quotation is
                    provided, Party B shall accept the single Market Quotation.
                    Party B shall be obligated to accept the Market Quotation
                    immediately upon determination so as to become legally
                    binding; or

                         (b) Party B's Loss (whether positive or negative and
                    without reference to any Unpaid Amounts) for each Terminated
                    Transaction or group of Terminated Transactions for which a
                    Market Quotation cannot be determined.

               (3)  For the purpose of paragraph (4) of the definition of Market
                    Quotation, Party B shall make reasonable efforts to
                    determine, acting in a commercially reasonable manner,
                    whether a Firm Offer is made in respect of a Replacement
                    Transaction with terms substantially the same as those of
                    this Agreement (save for the exclusion of provisions
                    relating to Transactions that are not Terminated
                    Transactions); provided, however, if Party B fails to make
                    such determination promptly, Party A shall have the right to
                    make such determination.

               (4)  Party B undertakes to use its reasonable efforts to obtain
                    at least one Market Quotation on or before the later of (a)
                    the Early Termination Date or (b) 10 Business Days following
                    the designation of the Early Termination Date (the "LATEST
                    SETTLEMENT AMOUNT DETERMINATION DAY").

               (5)  Party B will be deemed to have discharged its obligations
                    under (4) above if it requests Party A to obtain Market
                    Quotations, where such request is made in writing within two
                    Business Days after the day on which the Early Termination
                    Date is designated.

               (6)  If Party B requests Party A in writing to obtain Market
                    Quotations, Party A shall use its reasonable efforts to do
                    so before the Latest Settlement Amount Determination Day.

               (7)  Party A shall have the right to obtain Market Quotations,
                    without prior request by Party B, before the Latest
                    Settlement Amount Determination Day.

               (8)  If the Settlement Amount is a negative number, Section
                    6(e)(i)(3) of this Agreement shall be deleted in its
                    entirety and replaced with the following:

                    "SECOND METHOD AND MARKET QUOTATION. If Second Method and
                    Market Quotation apply, (1) Party B shall pay to Party A an
                    amount equal to the absolute value of the Settlement Amount
                    in respect of the Terminated Transactions, (2) Party B shall
                    pay to Party A the Termination Currency Equivalent of the
                    Unpaid Amounts owing to Party A and (3) Party A shall pay to
                    Party B the Termination Currency Equivalent of the Unpaid
                    Amounts owing to Party B, provided that, (i) the amounts
                    payable under (2) and (3) shall be subject to netting in
                    accordance with Section 2(c) of this Agreement and (ii)
                    notwithstanding any other provision of this Agreement, any
                    amount payable by Party A under (3) due to a failure by
                    Party A to make, when due, any payment under this Agreement,
                    shall not be netted against any amount payable by Party B
                    under (1)."

     (g)  "TERMINATION CURRENCY" means U.S. Dollars.

                                      R-11

<PAGE>

     (h)  ADDITIONAL TERMINATION EVENT.

          (A)  The following Additional Termination Event will apply to Party A,
               with Party A as the sole Affected Party and all Transaction as
               Affected Transactions.

               (i)  Party A fails to comply with the Rating Agency Downgrade
                    provisions as set forth in Part 5(f) below; or

               (ii) A Firm Offer is accepted by Party B pursuant to Part
                    5(f)(ii)(2)(B) following a Moody's Second Tier Downgrade
                    Event.

          (B)  The following Additional Termination Events will apply to Party
               B, with Party B as the sole Affected Party and all Transaction as
               Affected Transactions.

               (i)  Upon any amendment, supplement, modification or waiver of
                    any provision of the PSA (as defined below) without the
                    consent of Party A that adversely affects the rights or
                    interests of Party A;

               (ii) The termination of the Trust Fund through an Optional
                    Termination pursuant to Section 10.01 of the PSA; or

               (iii) Upon the irrevocable direction to dissolve or otherwise
                    terminate the Trust following which all assets of the Trust
                    will be liquidated and the proceeds of such liquidation
                    distributed to the Certificateholders.

PART 2. TAX REPRESENTATIONS.

     PARTY A AND PARTY B PAYER TAX REPRESENTATIONS.

          (i) For the purpose of Section 3(e), each of Party A and Party B makes
          the following representation:

          It is not required by any applicable law, as modified by the practice
          of any relevant governmental revenue authority, of any Relevant
          Jurisdiction to make any deduction or withholding for or on account of
          any Tax from any payment (other than interest under Section 2(e),
          6(d)(ii), or 6(e) of this Agreement) to be made by it to the other
          party under this Agreement. In making this representation, it may rely
          on (i) the accuracy of any representations made by the other party
          pursuant to Section 3(f) of this Agreement, (ii) the satisfaction of
          the agreement contained in Section 4(a)(i) or 4(a)(iii) of this
          Agreement, and the accuracy and effectiveness of any document provided
          by the other party pursuant to Section 4(a)(i) or 4(a)(iii) of this
          Agreement, and (iii) the satisfaction of the agreement of the other
          party contained in Section 4(d) of this Agreement, provided that it
          shall not be a breach of this representation where reliance is placed
          on clause (ii) and the other party does not deliver a form or document
          under Section 4(a)(iii) by reason of material prejudice to its legal
          or commercial position.

          (ii) For the purposes of Section 3(f), Party A makes the following
          representation:

          Party A is a U.S. corporation organized under the laws of Delaware.

PART 3. AGREEMENT TO DELIVER DOCUMENTS.

For the purpose of Sections 4(a)(i) and (ii), each party agrees to deliver the
following documents, as applicable:

     (a)  TAX FORMS, DOCUMENTS OR CERTIFICATES TO BE DELIVERED ARE:

                                      R-12

<PAGE>

<TABLE>
<CAPTION>
PARTY REQUIRED
  TO DELIVER
   DOCUMENT               FORM/DOCUMENT/CERTIFICATE                     DATE BY WHICH TO BE DELIVERED
--------------   -------------------------------------------   ----------------------------------------------
<S>              <C>                                           <C>
Party A          A correct, complete and duly executed IRS     (i) Upon entering into this Agreement, (ii)
                 Form W-9.                                     promptly upon reasonable demand by Party B,
                                                               and (iii) promptly upon learning that any such
                                                               Form previously provided by Party A has become
                                                               obsolete or incorrect.

Party B          (i) A correct, complete and duly executed     (a) With respect to clause (i) of the adjacent
                 IRS Form W-9 (or any successor thereto)       column, the Supplemental Interest Trust
                 that eliminates U.S. federal withholding      Trustee shall apply for the employer
                 and backup withholding tax on payments        identification number of the Supplemental
                 under this Agreement, and (ii) if requested   Interest Trust promptly upon entering into
                 by Party A, a correct, complete and duly      this Agreement and deliver the related
                 executed Form W-8IMY.                         correct, complete and duly executed IRS Form
                                                               W-9 promptly upon receipt, and in any event,
                                                               no later than the first Payment Date of this
                                                               Transaction; (b) in the case of a W-8IMY,
                                                               before December 31 of each third succeeding
                                                               calendar year, (c) promptly upon reasonable
                                                               demand by Party A, and (d) promptly upon
                                                               actual knowledge that any such Form previously
                                                               provided by Party B has become obsolete or
                                                               incorrect.
</TABLE>

     (b)  Other documents to be delivered are:-

<TABLE>
<CAPTION>
PARTY REQUIRED                                                                                                    COVERED BY
  TO DELIVER                                                                                                      SECTION 3(D)
   DOCUMENT               FORM/DOCUMENT/CERTIFICATE                     DATE BY WHICH TO BE DELIVERED           REPRESENTATION
--------------   -------------------------------------------   ----------------------------------------------   --------------
<S>              <C>                                           <C>                                              <C>
Party A          Either (1) a signature booklet containing     The earlier of the fifth Business Day after      Yes
and              secretary's certificate and resolutions       the Trade Date of the first Transaction or
Party B          ("authorizing resolutions") authorizing the   upon execution of this Agreement and as deemed
                 party to enter into derivatives               necessary for any further documentation.
                 transactions of the type contemplated by
                 the parties or (2) a secretary's
                 certificate, authorizing resolutions and
                 incumbency certificate, in either case, for
                 such party and any Credit Support Provider
                 of such party reasonably satisfactory in
                 form and substance to the other party.

Party B          An executed copy of the Pooling and           Upon execution of this Agreement.                Yes
                 Servicing Agreement ("PSA"), dated as of
                 July 1, 2007, among, inter alia, Merrill
                 Lynch Mortgage Investors, Inc., as
                 Depositor, Wells Fargo Bank, National
                 Association, as Master Servicer and
                 Securities Administrator and HSBC Bank USA,
                 National Association, as Trustee.

Party A          A duly executed copy of the Credit Support    As soon as practicable after the execution of    No
and              Document specified in Part 4 of this          this Agreement.
Party B          Schedule.
</TABLE>

                                      R-13

<PAGE>

<TABLE>
<CAPTION>
PARTY REQUIRED                                                                                                    COVERED BY
  TO DELIVER                                                                                                      SECTION 3(D)
   DOCUMENT               FORM/DOCUMENT/CERTIFICATE                     DATE BY WHICH TO BE DELIVERED           REPRESENTATION
--------------   -------------------------------------------   ----------------------------------------------   --------------
<S>              <C>                                           <C>                                              <C>
Party A and      An opinion of counsel reasonably              As soon as practicable after the execution of    No
Party B          satisfactory in form and substance to the     this Agreement.
                 other party.
</TABLE>

PART 4. MISCELLANEOUS

     (a)  ADDRESSES FOR NOTICES. For the purpose of Section 12(a):-

          (i)  Address for notices or communications to Party A:-

               MORGAN STANLEY CAPITAL SERVICES INC.
               Transaction Management Group
               1585 Broadway
               New York, New York 10036-8293
               Attention: CHIEF LEGAL OFFICER
               Fax No: 001 212 507 4622

          (ii) Address for notices or communications to Party B:

               WELLS FARGO BANK, NATIONAL ASSOCIATION
               9062 Old Annapolis Road
               Columbia, Maryland  21045
               Attention: Client Manager - MANA 2007-OAR4
               Facsimile No.: 410-715-2380
               Telephone No.: 410-884-2000

     (b)  NOTICES. Section 12(a) is amended by adding in the third line thereof
          after the phrase "messaging system" and before the ")" the words, ";
          provided, however, any such notice or other communication may be given
          by facsimile transmission if telex is unavailable, no telex number is
          supplied to the party providing notice, or if answer back confirmation
          is not received from the party to whom the telex is sent."

     (c)  PROCESS AGENT. For the purpose of Section 13(c):

          Party A appoints as its Process Agent: Not Applicable.

          Party B appoints as its Process Agent: Not Applicable.

     (d)  OFFICES. The provisions of Section 10(a) will not apply to Party A and
          to Party B.

     (e)  MULTIBRANCH PARTY. For the purpose of Section 10(c):

          Party A is not a Multibranch Party.

          Party B is not a Multibranch Party.

     (f)  "CALCULATION AGENT" means Party A.

     (g)  "CREDIT SUPPORT DOCUMENT" means (a) with respect to Party A, (1) the
          Credit Support Annex between Party A and Party B dated as of the date
          hereof (the "Credit Support Annex") and (2) the guarantee of Morgan
          Stanley and (b) with respect to Party B, the Credit Support Annex.

                                      R-14

<PAGE>

     (h)  CREDIT SUPPORT PROVIDER means in relation to Party A: Morgan Stanley,
          a Delaware corporation.

          CREDIT SUPPORT PROVIDER means in relation to Party B: None

     (i)  GOVERNING LAW; JURISDICTION. This Agreement, each Credit Support
          Document and each Confirmation will be governed by and construed in
          accordance with the laws of the State of New York without regard to
          conflict of law provisions thereof other than New York General
          Obligations Law Sections 5-1401 and 5-1402. Section 13(b) is amended
          by: (1) deleting "non-" from the second line of clause (i); and (2)
          deleting the final paragraph.

     (j)  WAIVER OF JURY TRIAL. Each party waives, to the fullest extent
          permitted by applicable law, any right it may have to a trial by jury
          in respect of any Proceedings relating to this Agreement or any Credit
          Support Document.

     (k)  NETTING OF PAYMENTS. Clause (ii) of Section 2(c) will apply to any
          amounts payable with respect to Transactions from the date of this
          Agreement.

     (l)  "AFFILIATE". Party A and Party B shall be deemed not to have any
          Affiliates for purposes of this Agreement, including for purposes of
          Section 6(b)(ii). For the avoidance of doubt, with respect to Party A,
          such definition shall be understood to exclude Morgan Stanley
          Derivative Products Inc.

     (m)  ADDITIONAL DEFINITIONS. All capitalized terms used but not otherwise
          defined in this Agreement shall have the meanings given thereto in the
          PSA.

PART 5. OTHER PROVISIONS

     (a)  Additional Representations.

          (i)  The introductory clause of Section 3 of this Agreement is hereby
               amended to read in its entirety as follows:

               "Each party represents to the other party (which representations
               will be deemed to be repeated by each party on each date on which
               a Transaction is entered into and, in the case of the
               representations in Section 3(f) and Section 3(g)(4), at all times
               until the termination of this Agreement) that:--"

          (ii) Section 3 of this Agreement is hereby amended by adding at the
               end thereof the following subsection (g):

               "(g) Relationship Between Parties.

                    (1) NONRELIANCE. It is not relying on any statement or
               representation of the other party regarding a Transaction
               (whether written or oral), other than the representations
               expressly made in this Agreement or the Confirmation in respect
               of that Transaction.

                    (2) EVALUATION AND UNDERSTANDING.

                         (i) NON-RELIANCE. In the case of Party A, it is acting
                    for its own account, and in the case of Party B, the
                    Supplemental Interest Trust Trustee is acting on behalf of
                    the Supplemental Interest Trust. Party A has made its own
                    independent decisions to enter into each Transaction under
                    this Agreement and as to whether such Transaction is
                    appropriate or proper for it based upon its own judgment and
                    upon advice from such advisers as it has deemed necessary
                    and, with respect to Party B, it has entered into each
                    Transaction under this

                                      R-15

<PAGE>

                    Agreement as directed under the PSA. It is not relying on
                    any communication (written or oral) of the other party as
                    investment advice or as a recommendation to enter into such
                    Transaction; it being understood that information and
                    explanations related to the terms and conditions of a
                    Transaction shall not be considered investment advice or a
                    recommendation to enter into that Transaction. No
                    communication (written or oral) received from the other
                    party shall be deemed to be an assurance or guarantee as to
                    the expected results of each such Transaction.

                         (ii) ASSESSMENT AND UNDERSTANDING. It is capable of
                    assessing the merits of and understanding (on its own behalf
                    or through independent professional advice), and understands
                    and accepts, the terms, conditions and risks of that
                    Transaction. It is also capable of assuming, and assumes,
                    the risks of that Transaction.

                         (iii) STATUS OF PARTIES. The other party is not acting
                    as a fiduciary for or an adviser to it in respect of that
                    Transaction.

                    (3) PURPOSE. It is an "eligible swap participant" as such
               term is defined in Section 35.1(b)(2) of the regulations (17
               C.F.R 35) promulgated under, and an "eligible contract
               participant" as defined in Section 1a(12) of, the Commodity
               Exchange Act, as amended, and it is entering into the Transaction
               for the purposes of managing its borrowings or investments,
               hedging its underlying assets or liabilities or in connection
               with a line of business.

                    (4) ERISA REPRESENTATION.

                         (i) Party A represents and warrants at all times
                    hereunder that it is not a pension plan or employee benefit
                    plan and that it is not using assets of any such plan or
                    assets deemed to be assets of such a plan in connection with
                    any Transaction under this Agreement, and

                         (ii) Party B represents and warrants at all times
                    hereunder that (x) it is not a pension plan or employee
                    benefit plan, and (y) (1) that it is not acting on behalf of
                    any such plan or using assets of any such plan or assets
                    deemed to be assets of any such plan in connection with any
                    Transaction under this Agreement or (2) any pension plan or
                    employee benefits plan subject to the Employee Retirement
                    Income Security Act of 1974, as amended ("ERISA"), or
                    Section 4975 of the Internal Revenue Code of 1986, as
                    amended (the "Code"), or any person who is acting on behalf
                    of such a plan, or using assets of such plan or assets
                    deemed to be "plan assets" of such plan for purposes of
                    ERISA or the Code, who purchases a certificate issued by the
                    Trust while this Agreement is in existence (i) shall
                    represent or shall be deemed to represent that the purchase
                    and holding of such certificate is in reliance on at least
                    one of the Prohibited Transaction Class Exemptions of 84-14,
                    90-1, 91-38, 95-60 or 96-23 or (ii) shall provide an opinion
                    of counsel which states that such purchase and holding is
                    permissible under applicable law and will not result in a
                    prohibited transaction under ERISA or Section 4975 of the
                    Code."

     (b)  SET-OFF. Subject to Section 2(c), Paragraphs 8(a) and 8(b) of the
          Credit Support Annex and Part 1(f)(ii)(8) hereof, notwithstanding any
          other provision of this Agreement or any other existing or future
          agreement, each party irrevocably waives any and all rights it may
          have to set off, net, recoup or otherwise withhold, suspend or
          condition payment or performance of any obligation between it and the
          other party hereunder against any obligation between it and the other
          party under any other agreements. Section 6(e) is hereby amended by
          the deletion of the following

                                      R-16

<PAGE>

          sentence at the end of the first paragraph thereof: "The amount, if
          any, payable in respect of an Early Termination Date and determined
          pursuant to this Section will be subject to any Set-off."

     (c)  CONFIRMATIONS. Party A will deliver to Party B a Confirmation relating
          to each Transaction.

     (d)  FORM OF AGREEMENT. The parties hereby agree that the text of the body
          of this Agreement is intended to be the printed form of 1992 ISDA
          Master Agreement (Multicurrency--Cross Border) as published and
          copyrighted by the International Swaps and Derivatives Association,
          Inc.

     (e)  TRANSFER, TERMINATION, AMENDMENT AND ASSIGNMENT.

          (i)  This Agreement may not be amended unless prior written notice is
               given to Moody's and Rating Agency Confirmation from S&P is
               obtained.

          (ii) Notwithstanding any other provision of this Agreement, no Early
               Termination Date shall be effectively designated by Party B
               (other than an Early Termination Date designated under Part
               5(f)(ii)(3)) unless Moody's has been given prior written notice
               of such designation.

          (iii) Party B may, with the prior written consent of Party A and
               subject to prior written notice to Moody's and Rating Agency
               Confirmation from S&P, assign, novate or transfer its rights and
               obligations under the Agreement to a third party. Notwithstanding
               Section 7 of this Agreement, Party A may, at its own discretion
               and at its own expense, subject to giving reasonable notice of
               transfer to Moody's and subject to Rating Agency Confirmation
               with respect to S&P, assign, novate or transfer its rights and
               obligations under this Agreement (including any Transactions
               hereunder) to any third party including, without limitation,
               another of Party A's offices, branches or affiliates (the
               "Transferee"), provided that:

                    (1) such third party agrees to be bound by, inter alia, the
               payment, transfer and collateral terms of this Agreement
               (including any Transactions hereunder) and substantially all
               other terms as the party which it replaces, as determined by
               Party B;

                    (2) such third party is an Eligible Replacement;

                    (3) a Termination Event or an Event of Default does not
               occur under this Agreement as a result of such transfer;

                    (4) if the Transferee is domiciled in a different
               jurisdiction from both Party A and Party B, the rating of the
               Certificates assigned by S&P are not adversely affected;

                    (5) as of the date of the transfer the Transferee will not,
               as a result of such transfer, be required to withhold or deduct
               on account of tax under this Agreement; and

                    (6) as of the date of such transfer, neither the Transferee
               nor Party B will be required to withhold or deduct any increased
               amount on account of any Taxes under this Agreement as a result
               of such transfer, unless, as of the date of such transfer, (x)
               Party B is entitled to additional amounts under Section
               2(d)(i)(4) on account of any such Taxes required to be deducted
               or withheld by the Transferee and (y) Party B is not required to
               pay Transferee additional amounts under Section 2(d)(i)(4) on
               account of any such Taxes required to be deducted or withheld by
               Party B.

               Following such transfer, all references herein to Party A shall
               be deemed to be references to the Transferee.

                                      R-17

<PAGE>

     (f)  RATING AGENCY DOWNGRADE.

          (i)  MOODY'S FIRST TIER DOWNGRADE. In the event the Relevant Entity is
               downgraded below the Moody's First Tier Required Swap
               Counterparty Ratings (a "MOODY'S FIRST TIER DOWNGRADE EVENT")
               then, within 30 Business Days after the occurrence of such
               Moody's First Tier Downgrade Event, Party A shall, at its option
               and at its own expense, either:

               (A)  cause an Eligible Replacement to replace Party A as party to
                    this Agreement; provided that if such Eligible Replacement
                    or its Credit Support Provider, as applicable, is rated
                    below the Moody's First Tier Required Swap Counterparty
                    Rating, such Eligible Replacement shall immediately Transfer
                    Eligible Credit Support to Party B pursuant to the Credit
                    Support Annex;

               (B)  obtain an Eligible Guarantee in respect of Party A's
                    obligations under this Agreement that is provided by an
                    entity with the Moody's First Tier Required Swap
                    Counterparty Rating; or

               (C)  Transfer Eligible Credit Support to Party B pursuant to the
                    Credit Support Annex.

          (ii) MOODY'S SECOND TIER DOWNGRADE. (1) In the event that no Relevant
               Entity has the Moody's Second Tier Required Swap Counterparty
               Rating (a "Moody's Second Tier Downgrade Event") then, Party A
               shall, at its option and at its own expense, use commercially
               reasonable efforts to as soon as reasonably practicable either:

               (A)  cause an Eligible Replacement to replace Party A as party to
                    this Agreement; or

               (B)  obtain an Eligible Guarantee in respect of Party A's
                    obligations under this Agreement that is provided by an
                    entity with the Moody's Second Tier Required Swap
                    Counterparty Rating.

               (2) If no Eligible Replacement or Eligible Guarantee has been
               effected in accordance with Part 5(f)(ii)(1)(A) or (B) above
               within 30 Business Days of such Moody's Second Tier Downgrade
               Event then:

               (A)  Party A shall Transfer Eligible Credit Support to Party B
                    pursuant to the Credit Support Annex until such replacement
                    or Eligible Guarantee takes effect or, if sooner, no Moody's
                    Second Tier Downgrade Event is occurring; and

               (B)  without prejudice to Party A's right to continue to seek an
                    Eligible Replacement or an Eligible Guarantee pursuant to
                    Part 5(f)(ii)(1)(A) and (B), Party B shall also have the
                    right (but not the obligation) on any Business Day
                    thereafter to obtain Firm Offers (such day a "FIRM OFFER
                    SOLICITATION DATE") by giving Party A written notice of its
                    intention to seek Firm Offers no later than 12:00 p.m., New
                    York time, on the Business Day prior to the Firm Offer
                    Solicitation Date. Such notice shall indicate the day and
                    time as of which each Eligible Replacement will be requested
                    to provide its Firm Offer; provided that Eligible
                    Replacements shall not provide Firm Offers prior to 12:00
                    p.m. New York time, on the Firm Offer Solicitation Date.
                    Party B shall undertake to use reasonable efforts to seek at
                    least 5 Firm Offers and Party B shall request each entity
                    providing a Firm Offer to do so to the extent reasonably
                    practicable as of the same day and time (without regard to
                    different time zones). If more than one Firm Offer remains
                    capable of becoming legally binding upon acceptance, Party B
                    shall accept the Firm Offer that constitutes (1) the highest
                    Firm Offer in the

                                      R-18

<PAGE>

                    case of a payment by an Eligible Replacement to Party B or
                    (2) the lowest Firm Offer in the case of a payment by Party
                    B to an Eligible Replacement; provided, however, if Party B
                    fails to make such determination promptly, Party A shall
                    have the right to make such determination. If only one Firm
                    Offer is provided, Party B shall accept the single Firm
                    Offer. Party B shall be obligated to accept the Firm Offer
                    upon determination; provided however, prior to accepting
                    such Firm Offer, Party B shall (1) on a day that is a
                    Business Day, provide Party A with at least 24 hours prior
                    written notice of its intent to accept such Firm Offer
                    (which acceptance, in all cases, shall be on a Business Day)
                    and (2) confirm that Party A has not identified an Eligible
                    Replacement. If at anytime prior to Party B's acceptance of
                    a Firm Offer, Party A has identified an Eligible Replacement
                    then, in its sole discretion, Party A may transfer its
                    rights and obligations under this Agreement to such Eligible
                    Replacement and an Early Termination Date will not occur. If
                    a Firm Offer is accepted by Party B, then, notwithstanding
                    Section 6 of the ISDA Master Agreement, an Early Termination
                    Date in respect of all outstanding Transactions will occur
                    immediately upon such acceptance by Party B and the
                    Settlement Amount will equal the Firm Offer so accepted by
                    Party B.

               (3) Notwithstanding Part 5(f)(ii)(1) and (2) above, an Additional
               Termination Event under this Part 5(f)(ii) shall only occur with
               Party A as the sole Affected Party if:

               (A)  a Moody's Second Tier Downgrade Event has occurred and has
                    been continuing for 30 or more Business Days; and

               (B)  at least one Eligible Replacement has made a Firm Offer in
                    accordance with Part 5(f)(ii)(2)(B) above which remains
                    capable of becoming legally binding upon acceptance by the
                    offeree.

          (iii) S&P FIRST TIER DOWNGRADE. (1) In the event the Relevant Entity
               that is a Financial Institution is downgraded below the S&P First
               Tier 'Required Swap Counterparty Rating (an "S&P FIRST TIER
               DOWNGRADE EVENT") then Party A shall, at its option and at its
               own expense, either:

               (A)  subject to Rating Agency Confirmation, within 60 calendar
                    days after the occurrence of such S&P First Tier Downgrade
                    Event, cause an Eligible Replacement to replace Party A as
                    party to this Agreement; provided that if such Eligible
                    Replacement or its Credit Support Provider, as applicable,
                    is a Financial Institution and is rated below the S&P First
                    Tier Required Swap Counterparty Rating, such Eligible
                    Replacement shall immediately Transfer Eligible Credit
                    Support to Party B pursuant to the Credit Support Annex;

               (B)  subject to Rating Agency Confirmation, within 60 calendar
                    days after the occurrence of such S&P First Tier Downgrade
                    Event, obtain an Eligible Guarantee in respect of Party A's
                    obligations under this Agreement that is provided by an
                    entity with the S&P First Tier Required Swap Counterparty
                    Rating;

               (C)  within 10 Business Days after the occurrence of such S&P
                    First Tier Downgrade Event, transfer Eligible Credit Support
                    to Party B pursuant to the Credit Support Annex; or

               (D)  subject to Rating Agency Confirmation, take other steps, if
                    any, to enable Party B to remedy a downgrade by S&P below
                    the S&P First Tier Required Swap Counterparty Rating.

                                      R-19

<PAGE>

               (2) Pending compliance with Part 5(f)(iii)(1), Party A shall
               Transfer Eligible Credit Support to Party B pursuant to the
               Credit Support Annex within 10 Business Days after an S&P First
               Tier Downgrade Event.

          For the avoidance of doubt, this Part 5(f)(iii) shall only be
          applicable to Financial Institutions.

          (iv) S&P SECOND TIER DOWNGRADE. (1) In the event that no Relevant
               Entity has the S&P Second Tier Required Swap Counterparty Rating
               (an "S&P SECOND TIER DOWNGRADE EVENT") then Party A shall, at its
               option and at its own expense, use commercially reasonable
               efforts to either:

               (A)  subject to Rating Agency Confirmation, within 60 calendar
                    days after such S&P Second Tier Downgrade Event, cause an
                    Eligible Replacement to replace Party A as party to this
                    Agreement; provided that if such Eligible Replacement or its
                    Credit Support Provider, as applicable, is a Financial
                    Institution and is rated below the S&P First Tier Required
                    Swap Counterparty Rating, such Eligible Replacement shall
                    immediately Transfer Eligible Credit Support to Party B
                    pursuant to the Credit Support Annex; or

               (B)  subject to Rating Agency Confirmation, within 60 calendar
                    days after such S&P Second Tier Downgrade Event, obtain an
                    Eligible Guarantee in respect of Party A's obligations under
                    this Agreement that is provided by an entity with the S&P
                    First Tier Required Swap Counterparty Rating or the S&P
                    Second Tier Required Swap Counterparty Rating; provided that
                    if such Eligible Guarantor is a Financial Institution and is
                    rated below the S&P First Tier Required Swap Counterparty
                    Rating, Party A shall immediately Transfer Eligible Credit
                    Support to Party B pursuant to the Credit Support Annex;

               (2) Pending compliance with Part 5(f)(iv)(1) Party A shall
               Transfer Eligible Credit Support to Party B pursuant to the
               Credit Support Annex within 10 Business Days after an S&P Second
               Tier Downgrade Event.

          (v)  Failure to act in accordance with this Part 5(f), including any
               failure by Party A to comply with or perform any obligation to be
               complied with or performed by Party A under the Credit Support
               Annex, shall constitute an Additional Termination Event with
               Party A as the sole Affected Party; provided that, failure by
               Party A to Transfer Eligible Credit Support to Party B in
               accordance with Part 5(f)(ii)(2) above shall constitute an Event
               of Default under Section 5(a)(iii)("Credit Support Default") if
               such failure is not remedied on or before the third Business Day
               after notice of such failure is given to Party A.

          (vi) For purposes of this Part 5(f), but subject to Part 5(f)(ii)(3),
               Party A shall be responsible for (1) posting collateral in
               accordance with such Credit Support Annex at its own cost; and
               (2) any cost incurred by it in complying with its obligations.

     (g)  RATING AGENCY DOWNGRADE DEFINITIONS.

          (i)  For purposes of this Agreement,

                    "ELIGIBLE GUARANTEE" means an unconditional and irrevocable
                    guarantee, letter of credit or other arrangement that is
                    provided by a party as principal obligor rather than surety
                    and is directly enforceable by Party B.

                    "ELIGIBLE REPLACEMENT" means an entity (1) with the Moody's
                    First Tier Required Swap Counterparty Ratings and/or the
                    Moody's Second Tier Required Swap Counterparty

                                      R-20

<PAGE>

                    Ratings or whose present and future obligations owing to
                    Party B are supported pursuant to an Eligible Guarantee
                    provided by a party with the Moody's First Tier Required
                    Swap Counterparty Ratings and/or the Moody's Second Tier
                    Required Swap Counterparty Ratings, and (2) with the S&P
                    First Tier Required Swap Counterparty Ratings and/or the S&P
                    Second Tier Required Swap Counterparty Ratings or whose
                    present and future obligations owing to Party B are
                    supported pursuant to an Eligible Guarantee provided by a
                    party with the S&P First Tier Required Swap Counterparty
                    Ratings and/or the S&P Second Tier Required Swap
                    Counterparty Ratings; provided that no entity shall be an
                    Eligible Replacement unless (A) a legal opinion confirms
                    that none of such Eligible Replacement's payments to Party B
                    under this Agreement will be subject to deduction or
                    withholding for or on account of any Tax or (B)
                    notwithstanding the definition of "Indemnifiable Tax" in
                    Section 14 of this Agreement, all Taxes in relation to
                    payments by such Eligible Replacement shall be Indemnifiable
                    Taxes unless such Taxes (x) are assessed directly against
                    Party B and not by deduction or withholding by such Eligible
                    Replacement or (y) arise as a result of a Change in Tax Law
                    (in which case such Tax shall be an Indemnifiable Tax only
                    if such Tax satisfies the definition of Indemnifiable Tax
                    provided in Section 14).

                    "FINANCIAL INSTITUTION" means (i) a bank, broker/dealer,
                    insurance company, structured investment company or
                    derivative product company or a subsidiary of any such
                    entity or (ii) Party A or any of its affiliates, in each
                    case with its obligations guaranteed by Morgan Stanley.

                    "FIRM OFFER" means an offer which, when made, was capable of
                    becoming legally binding upon acceptance.

                    "MOODY'S" means Moody's Investor Services, Inc. and any
                    successor to its rating business.

                    "MOODY'S FIRST TIER REQUIRED SWAP COUNTERPARTY RATING" means
                    (i) if such counterparty or entity has only Long-Term Rating
                    by Moody's, a Long-Term Rating of at least "A1" by Moody's
                    or (ii) if such counterparty or entity has both a Long-Term
                    Rating and a Short-Term Rating by Moody's, a Long-Term
                    Rating of at least "A2" by Moody's and a Short-Term Rating
                    of at least "P-1" by Moody's.

                    "MOODY'S SECOND TIER REQUIRED SWAP COUNTERPARTY RATING"
                    means (i) if such counterparty or entity has only a
                    Long-Term Rating by Moody's, a Long-Term Rating of at least
                    "A3" by Moody's or (ii) if such counterparty or entity has
                    both a Long-Term Rating and a Short-Term Rating by Moody's,
                    a Long-Term Rating of at least "A3" by Moody's and a
                    Short-Term Rating of at least "P-2" by Moody's.

                    "RATING AGENCIES" means Moody's and S&P.

                    "RATING AGENCY CONFIRMATION" means, with respect to any
                    particular proposed act or omission to act hereunder, that
                    the party acting or failing to act must consult with S&P and
                    receive from S&P a prior written confirmation that the
                    proposed action or inaction would not cause a downgrade or
                    withdrawal of the then current rating of the Certificates;
                    provided that S&P is then providing a rating of the
                    Certificates.

                    "RELEVANT ENTITY" means Party A, Party A's Credit Support
                    Provider and any principal obligor under an Eligible
                    Guarantee in respect of Party A's obligations under this
                    Agreement.

                    "S&P" means Standard and Poor's Ratings Services, a division
                    of The McGraw-Hill Companies, Inc. and any successor to its
                    rating business.

                                      R-21

<PAGE>

                    "S&P FIRST TIER REQUIRED SWAP COUNTERPARTY RATING" means, if
                    such counterparty or entity is a Financial Institution, (i)
                    a Short-Term Rating of at least "A-1" by S&P or (ii) if such
                    counterparty or entity does not have a Short-Term Rating by
                    S&P, a Long-Term Rating of at least "A+" by S&P. For the
                    avoidance of doubt, the S&P First Tier Required Swap
                    Counterparty Rating shall not be applicable to entities
                    other than Financial Institutions.

                    "S&P SECOND TIER REQUIRED SWAP COUNTERPARTY RATING" means
                    (A) if such counterparty or entity is a Financial
                    Institution, (i) a Short-Term Rating of at least "A-2" by
                    S&P or (ii) if such counterparty or entity does not have a
                    Short-Term Rating from S&P, a Long-Term Rating of at least
                    "BBB+" by S&P or (B) if such counterparty or entity is not a
                    Financial Institution, (i) a Short-Term Rating of at least
                    "A-1" by S&P or (ii) if such counterparty or entity does not
                    have a Short-Term Rating from S&P, a Long-Term Rating of at
                    least "A+" by S&P.

     (h)  SEVERABILITY. If any term, provision, covenant, or condition of this
          Agreement, or the application thereof to any party or circumstance,
          shall be held to be invalid or unenforceable (in whole or in part) for
          any reason, the remaining terms, provisions, covenants, and conditions
          hereof shall continue in full force and effect as if this Agreement
          had been executed with the invalid or unenforceable portion
          eliminated, so long as this Agreement as so modified continues to
          express, without material change, the original intentions of the
          parties as to the subject matter of this Agreement and the deletion of
          such portion of this Agreement will not substantially impair the
          respective benefits or expectations of the parties; provided, however,
          that nothing in this provision shall adversely affect the rights of
          each party under this Agreement; and provided further that this
          severability provision shall not be applicable if any provision of
          Section 1, 2, 5, 6, or 13 (or any definition or provision in Section
          14 to the extent it relates to, or is used in or connection with any
          such Section) shall be so held to be invalid or unenforceable. The
          parties shall endeavor to engage in good faith negotiations to replace
          any invalid or unenforceable term, provision, covenant or condition
          with a valid or enforceable term, provision, covenant or condition,
          the economic effect of which comes as close as possible to that of the
          invalid or unenforceable term, provision, covenant or condition.

     (i)  CONSENT TO RECORDING. Each party hereto consents to the monitoring or
          recording, at any time and from time to time, by the other party of
          any and all communications between trading and marketing personnel of
          the parties, waives any further notice of such monitoring or
          recording, and agrees to notify its officers and employees of such
          monitoring or recording.

     (j)  PROCEEDINGS. Party A shall not institute against or cause any other
          person to institute against, or join any other person in instituting
          against, the Supplemental Interest Trust or Wells Fargo Bank, National
          Association, not individually, but solely as Supplemental Interest
          Trust Trustee, any bankruptcy, reorganization, arrangement, insolvency
          or liquidation proceedings, or other proceedings under any federal or
          state bankruptcy or similar law for a period of one year and one day
          (or, if longer, the applicable preference period) following payment in
          full of the Certificates; provided, however, that this shall not
          restrict or prohibit Party A from joining in any bankruptcy,
          reorganization, arrangement, insolvency, moratorium or liquidation
          proceedings or other analogous proceedings under applicable laws,
          which has not been instituted in contravention of Party A's agreement
          in the sentence preceding this proviso. This Part 5(j) shall survive
          termination of this Agreement.

     (k)  REGULATION AB. Upon request by the Depositor, Party A may, at its
          option, but is not required to, (A) (a) provide the financial
          information required by Item 1115(b)(1) or (b)(2) of Regulation AB (as
          specified by the Depositor to Party A) with respect to Party A (or any
          guarantor of Party A if providing the financial data of a guarantor is
          permitted under Regulation AB) and any affiliated entities providing
          derivative instruments to Party B (the "Company Financial
          Information"), in a form appropriate for use in the Exchange Act
          Reports and in an EDGAR-compatible form; (b) if

                                      R-22

<PAGE>

          applicable, cause its accountants to issue their consent to filing or
          incorporation by reference of such financial statements in the
          Exchange Act Reports of Party B and (c) within 5 Business Days of the
          release of any updated financial information, provide current Company
          Financial Information as required under Item 1115(b) of Regulation AB
          to the Depositor in an EDGAR-compatible form and, if applicable, cause
          its accountants to issue their consent to filing or incorporation by
          reference of such financial statements in the Exchange Act Reports of
          Party A or (B) assign this Agreement at its own cost to another entity
          that has agreed to take the actions described in clause (A) of this
          sentence with respect to itself (and which has the same or better
          rating from the Rating Agencies as Party A as of the date of such
          assignment). For the avoidance of doubt, Party A is not required to
          take any action pursuant to this paragraph and the failure of Party A
          to take any such action will not constitute an Event of Default under
          this Agreement.

          As used in this Agreement the following words shall have the following
          meanings:

          "DEPOSITOR" shall mean Merrill Lynch Mortgage Investors, Inc.

          "EDGAR" shall mean the Commission's Electronic Data Gathering,
          Analysis and Retrieval system.

          "EXCHANGE ACT" shall mean the Securities Exchange Act of 1934, as
          amended and the rules and regulations promulgated thereunder

          "EXCHANGE ACT REPORTS" shall mean all Distribution Reports on Form
          10-D, Current Reports on Form 8-K and Annual Reports on Form 10-K that
          are to be filed with respect to Party B pursuant to the Exchange Act.

          "PROSPECTUS SUPPLEMENT" shall mean the prospectus supplement prepared
          in connection with the public offering and sale of the Offered
          Certificates.

          "RATING AGENCY" shall mean each of Standard & Poor's, a division of
          The McGraw-Hill Companies, Inc. and Moody's Investors Service, Inc. If
          any such organization or a successor is no longer in existence,
          "Rating Agency" shall be such nationally recognized statistical rating
          organization, or other comparable Person, as is designated by the
          Depositor, notice of which designation shall be given to the Trustee.
          References herein to a given rating category of a Rating Agency shall
          mean such rating category without giving effect to any modifiers.

          "REGULATION AB" shall mean the Asset Backed Securities Regulation AB,
          17 C.F.R. Sections 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.
          1,506-1,631 (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.

     (l)  SUPPLEMENTAL INTEREST TRUST TRUSTEE CAPACITY. It is expressly
          understood and agreed by the parties hereto that insofar as this
          Agreement is executed by Wells Fargo Bank, National Association (i)
          this Agreement is executed and delivered by Wells Fargo Bank, National
          Association not in its individual capacity but solely as Supplemental
          Interest Trust Trustee under the PSA in the exercise of the powers and
          authority conferred upon and vested in it as supplemental interest
          trust trustee thereunder, (ii) each of the representations,
          undertakings and agreements herein made on behalf of Party B is made
          and intended not as a personal representation, undertaking or
          agreement of the Supplemental Interest Trust Trustee but is made and
          intended for the purpose of binding only the Supplemental Interest
          Trust, and (iii) under no circumstances shall Wells Fargo Bank,
          National Association in its individual capacity be personally liable
          for the payment of any indebtedness or expenses or be personally
          liable for the breach or failure of any obligation, representation,
          warranty or covenant made or undertaken under this Agreement.

                                      R-23

<PAGE>

     (m)  "INDEMNIFIABLE TAX" Notwithstanding the definition of "Indemnifiable
          Tax" in Section 14 of this Agreement, in relation to payments by Party
          A, no Tax shall be an Indemnifiable Tax. In relation to payments by
          Party B, no Tax shall be an Indemnifiable Tax, unless the Tax is due
          to a Change in Tax Law and otherwise satisfies the definition of
          Indemnifiable Tax provided in Section 14.

     (n)  If Party A consolidates or amalgamates with, merges with or into, or
          transfers all or substantially all its assets to, another entity,
          where such action does not constitute an event described in Section
          5(a)(viii), Party A shall either (A) provide a legal opinion that none
          of Party A's payments to Party B under this Agreement will be subject
          to deduction or withholding for or on account of any Tax or (B)
          notwithstanding the definition of "Indemnifiable Tax" in Section 14 of
          this Agreement, all Taxes in relation to payments by Party A shall be
          Indemnifiable Taxes unless such Taxes (x) are assessed directly
          against Party B and not by deduction or withholding by such Eligible
          Replacement or (y) arise as a result of a Change in Tax Law (in which
          case such Tax shall be an Indemnifiable Tax only if such Tax satisfies
          the definition of Indemnifiable Tax provided in Section 14).

     (o)  LIMITED RECOURSE. Party A agrees that the obligations of Party B
          hereunder are limited recourse obligations payable solely from the
          assets of Party B to the extent funds are available for the payment
          thereof in accordance with the priority of payments described in the
          PSA. Party A and Party B agree that this Part 5(o) shall survive the
          termination of this Agreement for any reason whatsoever.

                                      R-24

<PAGE>

          IN WITNESS WHEREOF, the parties have executed this Schedule by their
duly authorized officers as of the date hereof:

MORGAN STANLEY CAPITAL SERVICES INC.    WELLS FARGO BANK, NATIONAL ASSOCIATION,
                                        not individually, but solely as
                                        Supplemental Interest Trust Trustee on
                                        behalf of the Supplemental Interest
                                        Trust relating to the Merrill Lynch
                                        Alternative Note Asset Trust, Series
                                        2007-OAR4 Mortgage Pass-Through
                                        Certificates

By:                                     By:
    ---------------------------------       ------------------------------------
Name:                                   Name:
Title:                                  Title:
Date:                                   Date:

                                      R-19

<PAGE>

                                    EXHIBIT A

                              CREDIT SUPPORT ANNEX

                                      R-20

<PAGE>

PARAGRAPH 13. ELECTIONS AND VARIABLES

This Annex supplements, forms part of, and is subject to, the ISDA Master
Agreement referred to above, is part of its Schedule and is a Credit Support
Document under this Agreement with respect to each party.

Accordingly, the parties agree as follows:

PARAGRAPHS 1-12. INCORPORATION. Paragraphs 1 through 12 inclusive of the ISDA
Credit Support Annex (Bilateral Form) (ISDA Agreements Subject to New York Law
Only) published in 1994 by the International Swaps and Derivatives Association,
Inc. are incorporated herein by reference and made a part hereof.

(a)  SECURITY INTEREST FOR "OBLIGATIONS". The term "OBLIGATIONS" as used in this
     Annex includes the following additional obligations with respect to Party A
     and Party B: None.

(b)  CREDIT SUPPORT OBLIGATIONS.

     (i)  "DELIVERY AMOUNT" and "RETURN AMOUNT" each has the meaning specified
          in Paragraph 3; provided that, in the event that Party A elects or is
          required to post collateral pursuant to a ratings downgrade by S&P and
          Moody's, (1) the Delivery Amount shall be calculated by reference to
          the requirements set forth by the rating agency that would result in
          Party A transferring the greater amount of Eligible Credit Support and
          (2) the Return Amount shall be calculated by reference to the
          requirements set forth by the rating agency that would result in Party
          B transferring the least amount of Posted Credit Support; provided
          further that, for purposes of calculating Delivery Amount and Return
          Amount, in the event that Party A elects or is required to post
          collateral pursuant to an S&P Second Tier Downgrade Event, the
          definition of Value shall be amended to insert the words "multiplied
          by the applicable Valuation Percentage, if any" after the word
          "thereof" and before the semicolon in clause (i)(A) thereof.

          "CREDIT SUPPORT AMOUNT" has the meaning specified below:

          (A)  in the event Party A elects or is required to post collateral
               pursuant to Part 5(f)(iii) of the Schedule due to a ratings
               downgrade or withdrawal by S&P, "Credit Support Amount" shall
               have the meaning specified in Paragraph 3; and

          (B)  in the event Party A elects or is required to post collateral
               pursuant to Part 5(f)(iv) of the Schedule due to a ratings
               downgrade or withdrawal by S&P, "Credit Support Amount" shall
               mean 125% of the Secured Party's Exposure; and

          (C)  in the event Party A elects to post collateral pursuant to Part
               5(f)(i) of the Schedule due to a ratings downgrade by Moody's
               below the Moody's First Tier Required Swap Counterparty Rating,
               "Credit Support Amount" shall have the meaning specified in Table
               1A or Table 1B, as applicable, attached hereto; and

          (D)  in the event Party A is required to post collateral pursuant to
               Part 5(f)(ii) of the Schedule due to a ratings downgrade or
               withdrawal by Moody's below the Moody's Second Tier Required Swap
               Counterparty Rating, "Credit Support Amount" shall have the
               meaning specified in Table 2A or 2B, as applicable, attached
               hereto.

     (ii) ELIGIBLE COLLATERAL.

          (A)  In the event Party A elects or is required to post collateral
               pursuant to Part 5(f)(iii) of the Schedule due to a ratings
               downgrade or withdrawal by S&P, (i) the items specified in Table
               3 attached hereto will qualify as "ELIGIBLE COLLATERAL" for Party
               A and (ii) the Valuation Percentage with respect any item of
               Eligible Collateral shall equal 100% divided by the Base
               Overcollateralization Rate for such item of Eligible Collateral
               specified in Table 3 attached hereto.

                                      R-21

<PAGE>

          (B)  In the event Party A elects or is required to post collateral
               pursuant to Part 5(f)(iv) of the Schedule due to a ratings
               downgrade or withdrawal by S&P, (i) the items specified in Table
               3 attached hereto will qualify as "Eligible Collateral" for Party
               A and (ii) the Valuation Percentage with respect any item of
               Eligible Collateral shall equal (1) 100% divided by (2) the Base
               Overcollateralization Rate for such item of Eligible Collateral
               specified in Table 3 attached hereto * 125%.

          (C)  In the event Party A elects to post collateral pursuant to Part
               5(f)(i) of the Schedule due to a ratings downgrade by Moody's
               below the Moody's First Tier Required Swap Counterparty Rating,
               the items specified in Table 4 attached hereto will qualify as
               "Eligible Collateral" for Party A.

          (D)  In the event Party A is required to post collateral pursuant to
               Part 5(f)(ii) of the Schedule due to a ratings downgrade or
               withdrawal by Moody's below the Moody's Second Tier Required Swap
               Counterparty Rating, the items specified in Table 5 attached
               hereto will qualify as "Eligible Collateral" for Party A.

     (iii) OTHER ELIGIBLE SUPPORT: Not applicable.

     (iv) THRESHOLDS.

          (A)  "INDEPENDENT AMOUNT" means, with respect to Party A, not
               applicable in the event Party A elects or is required to post
               collateral pursuant to Part 5(f) of the Schedule due to a ratings
               downgrade or withdrawal by S&P or Moody's.

               "INDEPENDENT AMOUNT" means, with respect to Party B, zero.

          (B)  "THRESHOLD" means with respect to Party A, (i) not applicable in
               the event Party A elects or is required to post collateral
               pursuant to Part 5(f) of the Schedule due to a ratings downgrade
               or withdrawal by Moody's and (ii) zero in the event that Party A
               elects or is required to post collateral pursuant to Part 5(f) of
               the Schedule due to a ratings downgrade or withdrawal by S&P.

               "THRESHOLD" means with respect to Party B: Infinite.

               "MINIMUM TRANSFER AMOUNT" means with respect to Party A: USD
               50,000; and with respect to Party B: USD 50,000; provided,
               however, that if such party is a Defaulting Party at the time,

               "MINIMUM TRANSFER AMOUNT" shall mean zero with respect to such
               party.

          (C)  ROUNDING. The Delivery Amount will be rounded up to the nearest
               multiple of $1000 and the Return Amount will be rounded down to
               the nearest multiple of $1000.

     (v)  "EXPOSURE" has the meaning specified in Paragraph 12, except that
          after the word "Agreement" in the fourth line thereof the words
          "(assuming, for this purpose only, that Part 1(f)(ii) of the Schedule
          is deleted)" shall be inserted.

(c)  VALUATION AND TIMING.

     (i)  "VALUATION AGENT" means for purposes of Paragraphs 3 and 5, the party
          making the demand under Paragraph 3, and, for purposes of Paragraph
          6(d), the Secured Party receiving or deemed to receive the
          Distributions or the Interest Amount, as applicable.

     (ii) "VALUATION DATE" means (A) each and every Wednesday commencing on the
          first such date following the date hereof or if any Wednesday is not a
          Local Business Day, the next succeeding Local Business

                                      R-22

<PAGE>

          Day and (B) any other Local Business Day on which notice is made
          before 12:00 noon, New York time on the immediately preceding Local
          Business Day.

     (iii) "VALUATION TIME" means the close of business in New York on the New
          York Banking Day before the Valuation Date or date of calculation, as
          applicable, or any time on the Valuation Date or date of calculation,
          as applicable; provided that the calculations of Value and Exposure
          will be made as of approximately the same time on the same date.

     (iv) "NOTIFICATION TIME" means 1:00 p.m., New York time, on a Local
          Business Day.

     (v)  The Valuation Agent's calculations pursuant to the terms hereof shall
          be made in accordance with standard market practice, using commonly
          accepted third party sources that comply with S&P's criteria (e.g.
          Bloomberg, Bridge Information Services, Reuters and Telerate).

(d)  CONDITIONS PRECEDENT AND SECURED PARTY'S RIGHTS AND REMEDIES. The following
     Termination Events will be a "SPECIFIED CONDITION" for the party specified
     (that party being the Affected Party of the Termination Event occurs with
     respect to that party): Not Applicable.

(e)  SUBSTITUTION.

     (i)  "SUBSTITUTION DATE" has the meaning specified in Paragraph 4(d)(ii).

     (ii) CONSENT. The Pledgor need not obtain the Secured Party's consent for
          any substitution pursuant to Paragraph 4(d).

(f)  DISPUTE RESOLUTION.

     (i)  "RESOLUTION TIME" means 1:00 p.m., New York time, on the Local
          Business Day following the date on which the notice of the dispute is
          given under Paragraph 5.

     (ii) VALUE. For the purpose of Paragraphs 5(i)(C) and 5(ii), the Value of
          Posted Credit Support or of any Transfer of Eligible Credit Support or
          Posted Credit Support, as the case may be, will be calculated by the
          Valuation Agent in accordance with standard market practice using
          third party sources (such as, by way of example only, Bloomberg or
          Reuters) where available.

     (iii) ALTERNATIVE. The provisions of Paragraph 5 will apply.

(g)  HOLDING AND USING POSTED COLLATERAL.

     (i)  ELIGIBILITY TO HOLD POSTED COLLATERAL; CUSTODIAN.

     Party B and its Custodian will be entitled to hold Posted Collateral
     pursuant to Paragraph 6(b); provided that the following conditions
     applicable to it are satisfied:

          (A)  Party B is not a Defaulting Party.

          (B)  Posted Collateral may be held only in the following
               jurisdictions: the United States of America.

          (C)  Party B's Custodian (or its parent) shall have a Long Term Rating
               by S&P of at least "A" and a Short Term Rating by S&P of at least
               "A-1" by S&P.

          (D)  Posted Collateral shall be held in an Eligible Account (as
               defined in the PSA).

               Initially, the Custodian for Party B is the Supplemental Interest
               Trust Trustee.

                                      R-23
<PAGE>

     (ii) USE OF POSTED COLLATERAL. The provisions of Paragraph 6(c)(i) will not
          apply to Party B, but the provisions of Paragraph 6(c)(ii) will apply
          to Party B.

(h)  DISTRIBUTIONS AND INTEREST AMOUNT.

     (i)  "INTEREST RATE". The "INTEREST RATE" shall be the rate actually earned
          by Party B on Posted Collateral in the form of Cash.

     (ii) TRANSFER OF INTEREST AMOUNT. The Transfer of the Interest Amount will
          be made on the last Local Business Day of each calendar month and on
          any Local Business Day that Posted Collateral in the form of Cash is
          Transferred to the Pledgor pursuant to Paragraph 3(b).

     (iii) ALTERNATIVE TO INTEREST AMOUNT. The provisions of Paragraph 6(d)(ii)
          will apply.

(i)  ADDITIONAL REPRESENTATION(S). None.

(j)  OTHER ELIGIBLE SUPPORT AND OTHER POSTED SUPPORT. "VALUE" and "TRANSFER"
     with respect to Other Eligible Support and Other Posted Support each means:
     Not applicable.

(k)  DEMANDS AND NOTICES.

     (i)  All demands, specifications and notices to Party A under this Annex
          will be made to:

          Morgan Stanley Capital Services Inc.
          1585 Broadway
          FID Controllers
          New York, NY 10036
          Attn: FID Collateral Manager
          Telephone No.: (212) 761-0877
          Facsimile No.: (212) 507-4949
          Email: nyfidcoll@morganstanley.com

     and all demands, specifications and notices to Party B under this Annex
     will be to:

          Wells Fargo Bank, National Association
          9062 Old Annapolis Road
          Columbia, Maryland 21045
          Attention: Client Manager - MANA 2007-OAR4
          Facsimile No.: 410-715-2380
          Telephone No.: 410-884-2000

; provided that any demand, specification or notice may be made by telephone
("Telephone Notice") between employees of each party if such Telephone Notice is
confirmed by a subsequent written instruction (which may be delivered via
facsimile or email) by the close of business on the same day that such Telephone
Notice is given.

     (ii) DEMAND FOR COLLATERAL. Without prejudice to any provision of this
          Agreement, if a Delivery Amount for a Valuation Date equals or exceeds
          the Pledgor's Minimum Transfer Amount, then the Pledgor will, without
          prior demand by the Secured Party, Transfer to the Secured Party
          Eligible Credit Support in accordance with Paragraph 3(a).

(l)  ADDRESSES FOR TRANSFERS.

     Party A:
     Cash:        CITIBANK, New York

                                      R-24

<PAGE>

     ABA No.:     021 000 089
     Account No.: 4072 - 4601

     Treasury Securities
     and Agency Notes: Bank of New York, New York/Morgan Stanley & Co.
                       Incorporated
     ABA No.:          021000018

     Other Forms of Eligible Collateral: As provided by Party A.

     Party B:
     Cash:          Wells Fargo Bank, National Association
     ABA No.:       121 000 248
     Account No.:   3970771416
     Account Name:  SAS Clearing
     FFC: 53168103, MANA 2007-OAR4(swap)

(m)  OTHER PROVISIONS.

     (i)  Notwithstanding any other provision in this Agreement to the contrary,
          no full or partial failure to exercise and no delay in exercising, on
          the part of Party A or Party B, any right, remedy, power or privilege
          permitted hereunder shall operate in any way as a waiver thereof by
          such party, including without limitation any failure to exercise or
          any delay in exercising to any or to the full extent of such party's
          rights with respect to transfer timing pursuant to Paragraph 4(b),
          regardless of the frequency of such failure or delay.

     (ii) In all cases, in order to facilitate calculation of the Delivery
          Amount and the Return Amount for a particular Valuation Date in
          accordance with Paragraph 3 of this Annex:

          (A)  Eligible Collateral;

          (B)  Exposure; and

          (C)  Posted Collateral

          shall each be expressed in US Dollars. If any of these items are
          expressed in a currency other than US Dollars, then they shall be
          converted into US Dollar amounts at the spot exchange rate determined
          by the Valuation Agent on that Valuation Date.

     (iii) FORM OF ANNEX. The parties hereby agree that the text of the body of
          this Annex is intended to be the printed form of 1994 ISDA Credit
          Support Annex (Bilateral Form - ISDA Agreements Subject to New York
          Law Only version) as published and copyrighted by the International
          Swaps and Derivatives Association, Inc.

(n)  AGREEMENT AS TO SINGLE SECURED PARTY AND PLEDGOR. Party A and Party B agree
     that, notwithstanding anything to the contrary in the recital to this
     Annex, Paragraph 1(b) or Paragraph 2 or the definitions of Paragraph 12,
     (a) the term "SECURED PARTY" as used in this Annex shall mean only Party B,
     (b) the term "PLEDGOR" as used in this Annex shall mean only Party A, (c)
     only Party A makes the pledge and grant in Paragraph 2, the acknowledgement
     in the final sentence of Paragraph 8(a) and the representations in
     paragraph 9 and (d) only Party A will be required to make Transfers of
     Eligible Credit Support hereunder.

(o)  EVENTS OF DEFAULT. Paragraph 7(ii) and (iii) will not apply to Party B.

(p)  EXPENSES. For the avoidance of doubt, Party A shall be responsible for
     posting collateral in accordance with this Credit Support Annex at its own
     cost and any taxes or other costs incurred by it in complying with its
     obligations hereunder.

                                      R-25

<PAGE>

(q)  ADDITIONAL DEFINITIONS.

     "AGENCY NOTES" means U.S. Dollar-denominated fixed rate, non-amortising,
     non-mortgage-backed, senior debt securities of fixed maturity, rated Aaa by
     Moody's and AAA by S&P issued by any of the Federal Home Loan Banks
     (including their consolidated obligations issued through the Office of
     Finance of the Federal Home Loan Bank System), the Federal National
     Mortgage Association, the Federal Home Loan Mortgage Corporation or the
     Federal Farm Credit Bank.

     "COMMERCIAL PAPER" means U.S. Dollar-denominated, coupon-bearing,
     commercial paper issued by a corporation, finance company, partnership or
     limited liability company.

     "TREASURY SECURITIES" means U.S. Dollar-denominated, coupon-bearing, senior
     debt securities of the United States of America issued by the U.S. Treasury
     Department and backed by the full faith and credit of the United States of
     America.

(r)  SUPPLEMENTAL INTEREST TRUST TRUSTEE CAPACITY. It is expressly understood
     and agreed by the parties hereto that insofar as this Annex is executed by
     Wells Fargo Bank, National Association (i) this Annex is executed and
     delivered by Wells Fargo Bank, National Association, not in its individual
     capacity but solely as Supplemental Interest Trust Trustee under the PSA in
     the exercise of the powers and authority conferred and invested in it as
     Supplemental Interest Trust Trustee thereunder, (ii) each of the
     representations, undertakings and agreements herein made on behalf of the
     Trust is made and intended not as personal representations of the
     Supplemental Interest Trust Trustee but is made and intended for the
     purpose of binding only the Trust, and (iii) under no circumstances shall
     Wells Fargo Bank, National Association in its individual capacity be
     personally liable for the payment of any indebtedness or expenses or be
     personally liable for the breach or failure of any obligation,
     representation, warranty or covenant made or undertaken under this Annex.

                                      R-26

<PAGE>

          IN WITNESS WHEREOF, the parties have executed this Credit Support
Annex by their duly authorized officers as of the date hereof.

                                        MORGAN STANLEY CAPITAL SERVICES INC.

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:
                                        Date:

                                        WELLS FARGO BANK, NATIONAL ASSOCIATION,
                                           not individually, but solely as
                                           Supplemental Interest Trust Trustee
                                           on behalf of the Supplemental
                                           Interest Trust relating to the
                                           Merrill Lynch Alternative Note Asset
                                           Trust, Series 2007-OAR4 Mortgage
                                           Pass-Through Certificates

                                        By:
                                            ------------------------------------
                                        Name:
                                        Title:
                                        Date:

                                      R-27

<PAGE>

                                    TABLE 1A

                              CREDIT SUPPORT AMOUNT
             DOWNGRADE BY MOODY'S BELOW MOODY'S FIRST TIER REQUIRED
                            SWAP COUNTERPARTY RATING

In the event Party A elects to post collateral pursuant to Part 5(f)(i) of the
Schedule due to a ratings downgrade by Moody's below the Moody's First Tier
Required Swap Counterparty Rating:

"CREDIT SUPPORT AMOUNT" means, with respect to a Valuation Date, an amount equal
to either:

(A) The greater of (1) zero and (2) the sum of (a) the MTM and (b) the lesser of
(x) 25 multiplied by DV01 and (y) 4% multiplied by the Notional Amount * 10; or

(B) The greater of (1) zero and (2) the sum of (a) the MTM and (b) the Notional
Amount * 10 multiplied by the amount specified in Table 1B attached hereto.

Party A shall, in its sole discretion, have the option to determine the Credit
Support Amount based upon either (A) or (B) above.

"DV01" means an estimate (as determined by the Valuation Agent in good faith and
in a commercially reasonable manner) of the change in the Secured Party's
Exposure resulting from a one basis point change in the swap curve.

"MTM" means the Secured Party's Exposure for that Valuation Date.

                                      R-28

<PAGE>

                                    TABLE 1B

<TABLE>
<CAPTION>
WEIGHTED AVERAGE
  LIFE OF HEDGE
    IN YEARS
----------------
<S>                <C>
        1          0.25%
        2          0.50%
        3          0.70%
        4          1.00%
        5          1.20%
        6          1.40%
        7          1.60%
        8          1.80%
        9          2.00%
       10          2.20%
       11          2.30%
       12          2.50%
       13          2.70%
       14          2.80%
       15          3.00%
       16          3.20%
       17          3.30%
       18          3.50%
       19          3.60%
       20          3.70%
       21          3.90%
       22          4.00%
       23          4.00%
       24          4.00%
       25          4.00%
       26          4.00%
       27          4.00%
       28          4.00%
       29          4.00%
       30          4.00%
</TABLE>

                                      R-29

<PAGE>

                                    TABLE 2A

                              CREDIT SUPPORT AMOUNT
             DOWNGRADE BY MOODY'S BELOW MOODY'S SECOND TIER REQUIRED
                            SWAP COUNTERPARTY RATING

In the event Party A is required to post collateral pursuant to Part 5(f)(ii) of
the Schedule due to a ratings downgrade by Moody's below the Moody's Second Tier
Required Swap Counterparty Rating:

"CREDIT SUPPORT AMOUNT" means, with respect to a Valuation Date, an amount equal
to either:

(A) The greatest of (1) zero, (2) the amount payable by Party A in respect of
the next Floating Rate Payer Payment Date, and (3) the sum of (a) the MTM and
(b) the lesser of (x) 60 multiplied by DV01 and (y) 9% multiplied by the
Notional Amount * 10; or

(B) The greatest of (1) zero, (2) the amount payable by Party A in respect of
the next Floating Rate Payer Payment Date, and (3) the sum of (a) the MTM and
(b) the Notional Amount * 10 multiplied by the amount specified in Table 2B
attached hereto.

Party A shall, in its sole discretion, have the option to determine the Credit
Support Amount based upon either (A) or (B) above.

"DV01" means an estimate (as determined by the Valuation Agent in good faith and
in a commercially reasonable manner) of the change in the Secured Party's
Exposure resulting from a one basis point change in the swap curve.

"MTM" means the Secured Party's Exposure for that Valuation Date.

                                      R-30

<PAGE>

                                    TABLE 2B

<TABLE>
<CAPTION>
WEIGHTED AVERAGE
  LIFE OF HEDGE
    IN YEARS
----------------
<S>                <C>
        1          0.60%
        2          1.20%
        3          1.70%
        4          2.30%
        5          2.80%
        6          3.30%
        7          3.80%
        8          4.30%
        9          4.80%
       10          5.30%
       11          5.60%
       12          6.00%
       13          6.40%
       14          6.80%
       15          7.20%
       16          7.60%
       17          7.90%
       18          8.30%
       19          8.60%
       20          9.00%
       21          9.00%
       22          9.00%
       23          9.00%
       24          9.00%
       25          9.00%
       26          9.00%
       27          9.00%
       28          9.00%
       29          9.00%
       30          9.00%
</TABLE>

                                      R-31
<PAGE>

                                     TABLE 3

                               ELIGIBLE COLLATERAL
                                       S&P

<TABLE>
<CAPTION>
                                                                        BASE
                                                               OVERCOLLATERALIZATION
ELIGIBLE COLLATERAL                                                     RATE
-------------------                                            ---------------------
<S>                                                            <C>
Cash                                                                    100%

U.S. treasuries (current coupon, constant maturity), 'AAA'              102%
U.S. agencies, 'AAA' covered bonds (floating), 'AAA'
sovereign bonds (floating), 'AAA', 'AA' credit card ABS
(floating), 'AAA', 'AA' auto ABS (floating), and 'AAA' U.S.
student loan ABS (floating) with a remaining maturity of
less than 5 years

U.S. treasuries (current coupon, constant maturity), 'AAA'              108%
U.S. agencies, 'AAA' covered bonds (floating), 'AAA'
sovereign bonds (floating), 'AAA', 'AA' credit card ABS
(floating), 'AAA', 'AA' auto ABS (floating), and 'AAA' U.S.
student loan ABS (floating) with a remaining maturity of
greater than or equal to 5 years and less than or equal to
10 years

'AAA' covered bonds (fixed), 'AAA' sovereign bonds (fixed),             105%
'A' credit card ABS (floating), 'A' auto ABS (floating),
'AAA' CMBS (floating), 'AAA' CDO (floating) 'AA', 'A' U.S.
student loan ABS (floating), and 'AAA', 'AA' corporate bonds
(fixed or floating) with a remaining maturity of less than 5
years

'AAA' covered bonds (fixed), 'AAA' sovereign bonds (fixed),             115%
'A' credit card ABS (floating), 'A' auto ABS (floating),
'AAA' CMBS (floating), 'AAA' CDO (floating), 'AA', 'A' U.S.
student loan ABS (floating), and 'AAA', 'AA' U.S. and
European corporate bonds (fixed or floating) with a
remaining maturity of greater than or equal to 5 years and
less than or equal to 10 years

'BBB' credit card ABS (floating), 'BBB' auto ABS (floating),            125%
'AA', 'A' CDO (floating), 'BBB' U.S. student loan ABS
(floating), and 'A' corporate bonds (fixed or floating) with
a remaining maturity of less than 5 years

'BBB' credit card ABS (floating), 'BBB' auto ABS (floating),            140%
'AA', 'A' CDO (floating), 'BBB' U.S. student loan ABS
(floating), and 'A' corporate bonds (fixed or floating) with
a remaining maturity of greater than or equal to 5 years and
less than or equal to 10 years
</TABLE>

                            R-32

<PAGE>

                           TABLE 4

                     ELIGIBLE COLLATERAL
   DOWNGRADE BY MOODY'S BELOW MOODY'S FIRST TIER REQUIRED
                  SWAP COUNTERPARTY RATING

<TABLE>
<CAPTION>
                                                                VALUATION
                     ELIGIBLE COLLATERAL                       PERCENTAGE
                     -------------------                       ----------
<S>                                                            <C>
                      U.S. Dollar Cash                            100%
                          EURO Cash                                97%
                        Sterling Cash                              97%
   Fixed-Rate Negotiable Treasury Debt Issued by The U.S.
         Treasury Department with Remaining Maturity
                          < 1 Year                                100%
                        1 to 2 Years                              100%
                        2 to 3 Years                              100%
                        3 to 5 Years                              100%
                        5 to 7 Years                              100%
                        7 to 10 Years                             100%
                       10 to 20 Years                             100%
                         > 20 Years                               100%
  Floating-Rate Negotiable Treasury Debt issued by The U.S.
             Treasury Department
                       All Maturities                             100%
  Fixed-Rate U.S. Agency Debentures with Remaining Maturity
                          < 1 Year                                100%
                        1 to 2 Years                              100%
                        2 to 3 Years                              100%
                        3 to 5 Years                              100%
                        5 to 7 Years                              100%
                        7 to 10 Years                             100%
                       10 to 20 Years                             100%
                         > 20 Years                               100%
           Floating-Rate U.S. Agency Debentures -
                       All Maturities                             100%
  Fixed-Rate Euro-Zone Government Bonds Rated Aa3 or Above
                   with Remaining Maturity
                          < 1 Year                                 97%
                        1 to 2 Years                               97%
                        2 to 3 Years                               97%
                        3 to 5 Years                               97%
                        5 to 7 Years                               97%
                        7 to 10 Years                              97%
                       10 to 20 Years                              97%
                         > 20 Years                                97%
Floating-Rate Euro-Zone Government Bonds Rated Aa3 or Above
                       All Maturities                              97%
   Fixed-Rate United Kingdom Gilts with Remaining Maturity
                          < 1 Year                                 97%
                        1 to 2 Years                               97%
                        2 to 3 Years                               97%
                        3 to 5 Years                               97%
                        5 to 7 Years                               97%
                        7 to 10 Years                              97%
</TABLE>

                            R-33
<PAGE>

<TABLE>
<CAPTION>
                                                                VALUATION
                     ELIGIBLE COLLATERAL                       PERCENTAGE
                     -------------------                       ----------
<S>                                                            <C>
                       10 to 20 Years                              97%
                         > 20 Years                                97%
             Floating-Rate United Kingdom Gilts
                       All Maturities                              97%
</TABLE>

                            R-34

<PAGE>

                           TABLE 5

                     ELIGIBLE COLLATERAL
   DOWNGRADE BY MOODY'S BELOW MOODY'S SECOND TIER REQUIRED
                  SWAP COUNTERPARTY RATING

<TABLE>
<CAPTION>
                                                                VALUATION
                     ELIGIBLE COLLATERAL                       PERCENTAGE
                     -------------------                       ----------
<S>                                                            <C>
                      U.S. Dollar Cash                            100%
                          EURO Cash                                 93%
                        Sterling Cash                               94%
   Fixed-Rate Negotiable Treasury Debt Issued by The U.S.
         Treasury Department with Remaining Maturity
                          < 1 Year                                100%
                        1 to 2 Years                               99%
                        2 to 3 Years                               98%
                        3 to 5 Years                               97%
                        5 to 7 Years                               95%
                        7 to 10 Years                              94%
                       10 to 20 Years                              89%
                         > 20 Years                                87%
  Floating-Rate Negotiable Treasury Debt issued by The U.S.
             Treasury Department All Maturities                    99%
  Fixed-Rate U.S. Agency Debentures with Remaining Maturity
                          < 1 Year                                 99%
                        1 to 2 Years                               98%
                        2 to 3 Years                               97%
                        3 to 5 Years                               96%
                        5 to 7 Years                               94%
                        7 to 10 Years                              93%
                       10 to 20 Years                              88%
                         > 20 Years                                86%
           Floating-Rate U.S. Agency Debentures -
                       All Maturities                              98%
  Fixed-Rate Euro-Zone Government Bonds Rated Aa3 or Above
                   with Remaining Maturity
                          < 1 Year                                 93%
                        1 to 2 Years                               92%
                        2 to 3 Years                               91%
                        3 to 5 Years                               89%
                        5 to 7 Years                               87%
                        7 to 10 Years                              86%
                       10 to 20 Years                              82%
                         > 20 Years                                80%
Floating-Rate Euro-Zone Government Bonds Rated Aa3 or Above
                       All Maturities                              92%
   Fixed-Rate United Kingdom Gilts with Remaining Maturity
                          < 1 Year                                 93%
                        1 to 2 Years                               92%
                        2 to 3 Years                               91%
                        3 to 5 Years                               90%
                        5 to 7 Years                               89%
                        7 to 10 Years                              88%
                       10 to 20 Years                              84%
                         > 20 Years                                82%
</TABLE>

                            R-35

<PAGE>

<TABLE>
<CAPTION>
                                                                VALUATION
                     ELIGIBLE COLLATERAL                       PERCENTAGE
                     -------------------                       ----------
<S>                                                            <C>
             Floating-Rate United Kingdom Gilts
                       All Maturities                              93%
</TABLE>

                            R-36

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00128-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00128-of-00352.parquet"}]]