Document:

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                                                                   Exhibit 10.36

                                    WARRANT
                       TO PURCHASE SHARES OF COMMON STOCK
                                       OF
                       PROTEIN POLYMER TECHNOLOGIES, INC.

THE WARRANTS REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933, AND NEITHER THESE WARRANTS NOR ANY INTEREST THEREIN MAY
BE TRANSFERRED, HYPOTHECATED OR OTHERWISE DISPOSED OF WITHOUT REGISTRATION UNDER
THAT ACT OR AN OPINION OF COUNSEL ACCEPTABLE TO THE COMPANY THAT SUCH
REGISTRATION IS NOT REQUIRED.

No. 00-GCOR-1                                      Warrant to Purchase Shares of
December 21, 2000                                  Common Stock, $.01 Par Value

                        WARRANT TO PURCHASE COMMON STOCK
                                       of
                      PROTEIN POLYMER TECHNOLOGIES, INC.,
                             a Delaware corporation
          Void after the date set forth in the first paragraph hereof

          This certifies that, for value received, Genencor International Inc.,
or registered assigns ("Holder") is entitled, subject to the terms set forth
                        ------
below, to purchase from Protein Polymer Technologies, Inc., a Delaware
corporation (the "Company"), the number of shares of Common Stock, $.01 par
                  -------
value, of the Company (such class of stock being referred to herein as "Common
                                                                        ------
Stock") equal to five hundred thousand dollars ($500,000) divided by the
-----
Purchase Price (as defined below), as constituted on December 21, 2000 (the
"Issue Date"), upon surrender of this Warrant, at the principal office of the
Company referred to below, with the subscription form attached hereto duly
executed, and simultaneous payment therefor in the consideration specified in
Section 1 hereof, **. The shares of Common Stock issued or issuable upon
exercise of this Warrant are sometimes referred to as the "Warrant Shares."
                                                           --------------

** Material is confidential and has been omitted and filed separately with the
Securities and Exchange Commission.

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The term "Warrants" as used herein shall include this Warrant and any warrants
          --------
delivered in substitution or exchange therefor as provided herein.

     1. Exercise.  This Warrant may be exercised at any time or from time to
        --------
time, on any business day, for all or part of the full number of Warrant Shares
during the period of time called for hereby, by surrendering it at the principal
office of the Company, 10655 Sorrento Valley Road, First Floor, San Diego,
California 92121, with the subscription form duly executed, together with
payment for the Warrant Shares payable in cash, by check for same day funds
and/or by delivery and cancellation of promissory notes evidencing indebtedness
of the Company.  No other form of consideration shall be acceptable for the
exercise of this Warrant.  A Warrant shall be deemed to have been exercised
immediately prior to the close of business on the date of its surrender for
exercise as provided above, and the person entitled to receive the shares of
Common Stock issuable upon such exercise shall be treated for all purposes as
the holder of such shares of record as of the close of business on such date.
As soon as practicable on or after such date, and in any event within 10 days
thereof, the Company shall issue and deliver to the person or persons entitled
to receive the same a certificate or certificates for the number of shares of
Common Stock issuable upon such exercise.  Upon any partial exercise, the
Company will issue and deliver to Holder a new Warrant or Warrants with respect
to the shares of Common Stock not so transferred.  No fractional shares of
Common Stock shall be issued upon exercise of a Warrant.  In lieu of any
fractional share to which Holder would be entitled upon exercise, the Company
shall pay cash equal to the product of such fraction multiplied by the Purchase
Price.

     2. Payment of Taxes.  All shares of Common Stock issued upon the exercise
        ----------------
of a Warrant shall be duly authorized, validly issued and outstanding, fully
paid and non-assessable.  Holder shall pay all taxes and other governmental
charges that may be imposed in respect of the issue or delivery thereof and any
tax or other charge imposed in connection with any transfer involved in the
issue of any certificate for shares of Common Stock in any name other than that
of the registered Holder of the Warrant surrendered in connection with the
purchase of such shares, and in such case the Company shall not be required to
issue or deliver any stock certificate until such tax or other charge has been
paid or it has been established to the Company's satisfaction that no tax or
other charge is due.

     3. Transfer and Exchange.  This Warrant and all rights hereunder are
        ---------------------
transferable, in whole but not in part, only with the prior approval of the
Company, which approval shall not be unreasonably withheld.  If such a proposed
transfer is so approved, this Warrant is transferable on the books of the
Company maintained for such purpose at its principal office referred to above by
Holder in person or by duly authorized attorney, upon surrender of this Warrant
properly endorsed and upon payment of any necessary transfer tax or other
governmental charge imposed upon such transfer.  Each taker and holder of this
Warrant, by taking or holding the same, consents and agrees that this Warrant,
when endorsed in blank, shall be deemed negotiable and that when this Warrant
shall have been so endorsed, the Holder hereof may be treated by the Company and
all other persons dealing with this Warrant as the absolute owner hereof for any
purpose and as the person entitled to exercise the rights represented hereby or
to the transfer hereof on

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the books of the Company, any notice to the contrary notwithstanding; but until
such transfer on such books, the Company may treat the registered Holder hereof
as the owner for all purposes.

     4. Certain Adjustments.
        -------------------

           4.1  Adjustment for Reorganization, Consolidation, Merger. In case of
                ----------------------------------------------------
any reorganization of the Company (or any other corporation, the stock or other
securities of which are at the time receivable on the exercise of this Warrant)
after the Issue Date, or in case, after the Issue Date, the Company (or any such
other corporation) shall consolidate with or merge into another corporation
(other than the merger of a wholly owned subsidiary into the Company) or convey
all or substantially all its assets to another corporation, then and in each
such case Holder, upon the exercise hereof as provided in Section 1 at any time
after the consummation of such reorganization, consolidation, merger or
conveyance, shall be entitled to receive, in lieu of the stock receivable upon
the exercise of this Warrant prior to such consummation, the stock or other
securities or property to which such Holder would have been entitled upon such
consummation if such Holder had exercised this Warrant immediately prior
thereto.

           4.2  Adjustments for Dividends in Common Stock. If the Company at any
                -----------------------------------------
time or from time to time after the Issue Date makes, or fixes a record date for
the determination of holders of Common Stock entitled to receive, a dividend
payable in additional shares of Common Stock, then and in each such event the
Purchase Price then in effect shall be decreased as of the time of such issuance
or, in the event such record date is fixed, as of the close of business on such
record date, by multiplying the Purchase Price then in effect by a fraction (1)
the numerator of which is the total number of shares of Common Stock issued and
outstanding immediately prior to the time of such issuance or the close of
business on such record date, and (2) the denominator of which shall be the
total number of shares of Common Stock issued and outstanding immediately prior
to the time of such issuance or the close of business on such record date plus
the number of shares of Common Stock issuable in payment of such dividend;
provided, however, that if such record date is fixed and such dividend is not
fully paid on the date fixed therefor, the Purchase Price shall be recomputed
accordingly as of the close of business on such record date and thereafter the
Purchase Price shall be adjusted pursuant to this Section 4.2 as of the time of
actual payment of such dividends.

           4.3  Stock Split and Reverse Stock Split. If the Company at any time
                -----------------------------------
or from time to time after the Issue Date effects a subdivision of the
outstanding Common Stock, the Purchase Price then in effect immediately before
that subdivision shall be proportionately decreased and the number of shares of
Common Stock theretofore receivable upon the exercise of this Warrant shall be
proportionately increased. If the Company at any time or from time to time after
the Issue Date combines the outstanding shares of Common Stock into a smaller
number of shares, the Purchase Price then in effect immediately before that
combination shall be proportionately increased and the number of shares of
Common Stock theretofore receivable upon the exercise of this Warrant shall be
proportionately decreased. Each adjustment under this

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Section 4.3 shall become effective at the close of business on the date the
subdivision or combination becomes effective.

           4.4  Accountants' Certificate as to Adjustment. In each case of an
                -----------------------------------------
adjustment in the shares of Common Stock receivable on the exercise of the
Warrants, the Company at its expense shall cause independent public accountants
of recognized standing selected by the Company (who may be the independent
public accountants then auditing the books of the Company) to compute such
adjustment in accordance with the terms of the Warrants and prepare a
certificate setting forth such adjustment and showing the facts upon which such
adjustment is based. The Company will forthwith mail a copy of each such
certificate to each holder of a Warrant at the time outstanding.

     5. Loss or Mutilation. Upon receipt by the Company of evidence satisfactory
        ------------------
to it (in the exercise of reasonable discretion) of the ownership of and the
loss, theft, destruction or mutilation of any Warrant and (in the case of loss,
theft or destruction) of indemnity satisfactory to it (in the exercise of
reasonable discretion), and (in the case of mutilation) upon surrender and
cancellation thereof, the Company will execute and deliver in lieu thereof a new
Warrant of like tenor.

     6. Reservation of Common Stock.  The Company shall at all times reserve and
        ---------------------------
keep available out of its authorized but unissued shares of Common Stock, solely
for the purpose of effecting the exercise of the Warrant, such number of its
shares of Common Stock as shall from time to time be sufficient to effect
exercise of the Warrant; and if at any time the number of authorized but
unissued shares of Common Stock shall not be sufficient to effect such exercise,
the Company will take such corporate action as may, in the opinion of its
counsel, be necessary to increase its authorized but unissued shares of Common
Stock to such number of shares as shall be sufficient for such purpose.

     7. Notices of Record Date. In the event of (i) any taking by the Company of
        ----------------------
a record of the holders of any class of securities for the purpose of
determining the holders thereof who are entitled to receive any dividend or
other distribution, or (ii) any capital reorganization of the Company, any
reclassification or recapitalization of the capital stock of the Company, any
merger or consolidation of the Company with or into any other corporation (other
than a merger of a wholly owned subsidiary into the Company), or any transfer of
all or substantially all of the assets of the Company to any other person or any
voluntary or involuntary dissolution, liquidation or winding up of the Company,
the Company shall mail to the Holder at least thirty (30) days prior to the
record date specified therein, a notice specifying (1) the date on which any
such record is to be taken for the purpose of such dividend or distribution and
a description of such dividend or distribution, (2) the date on which any such
reorganization, reclassification, transfer, consolidation, merger, dissolution,
liquidation or winding up is expected to become effective, and (3) the date, if
any, that is to be fixed, as to when the holders of record of Common Stock (or
other securities) shall be entitled to exchange their shares of Common Stock (or
other securities) for securities or other property deliverable upon such
reorganization, reclassification, transfer, consolidation, merger, dissolution,
liquidation or winding up.

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     8. Investment Representation and Restriction on Transfer.
        -----------------------------------------------------

           8.1  Securities Law Requirements.
                ---------------------------

                (a)  By its acceptance of this Warrant, Holder hereby represents
and warrants to the Company that this Warrant and the Warrant Shares will be
acquired for investment for its own account, not as a nominee or agent, and not
with a view to the sale or distribution of any part thereof, and that it has no
present intention of selling, granting participations in or otherwise
distributing the same. By acceptance of this Warrant, Holder further represents
and warrants that it does not have any contract, undertaking, agreement or
arrangement with any person to sell, transfer or grant participations to any
person, with respect to this Warrant or the Warrant Shares.

                (b)  By its acceptance of this Warrant, Holder understands that
this Warrant is not, and the Warrant Shares will not be, registered under the
Securities Act of 1933, as amended (the "Act"), on the basis that the issuance
                                         ---
of this Warrant and the Warrant Shares are exempt from registration under the
Act pursuant to Section 4(2) thereof, and that the Company's reliance on such
exemption is predicated on Holder's representations and warranties set forth
herein.

                (c)  By its acceptance of this Warrant, Holder understands that
the Warrant and the Warrant Shares may not be sold, transferred, or otherwise
disposed of without registration under the Act, or an exemption therefrom, and
that in the absence of an effective registration statement covering the Warrant
and the Warrant Shares or an available exemption from registration under the
Act, the Warrant and the Warrant Shares must be held indefinitely. In
particular, Holder is aware that the Warrant and the Warrant Shares may not be
sold pursuant to Rule 144 promulgated under the Act unless all of the conditions
of Rule 144 are satisfied. Among the conditions for use of Rule 144 are the
availability of current information about the Company to the public, prescribed
holding periods which will commence only upon Holder's payment for the
securities being sold, manner of sale restrictions, volume limitations and
certain other restrictions. By its acceptance of this Warrant, Holder represents
and warrants that, in the absence of an effective registration statement
covering the Warrant or the Warrant Shares, it will sell, transfer or otherwise
dispose of the Warrant and the Warrant Shares only in a manner consistent with
its representations and warranties set forth herein and then only in accordance
with the provisions of Section 8.1(d).

                (d)  By its acceptance of this Warrant, Holder agrees that in no
event will it transfer or dispose of any of the Warrants or the Warrant Shares
other than pursuant to an effective registration statement under the Act, unless
and until (i) Holder shall have notified the Company of the proposed disposition
and shall have furnished the Company with a statement of the circumstances
surrounding the disposition, and (ii) if reasonably requested by the Company, at
the expense of the Holder or transferee, it shall have furnished to the Company
an opinion of counsel, reasonably satisfactory to the Company, to the effect
that (A) such transfer may be made without registration under the Act and (B)
such transfer or disposition will not cause the termination or the non-
applicability of any exemption to the registration and prospectus delivery
requirements of

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the Act or to the qualification or registration requirements of the securities
laws of any other jurisdiction on which the Company relied in issuing the
Warrant or the Warrant Shares.

           8.2  Legends; Stop Transfer.
                ----------------------

                (a)  All certificates evidencing the Warrant Shares shall bear a
legend in substantially the following form:

           The securities represented by this certificate have not been
           registered under the Securities Act of 1933. These securities
           have been acquired for investment and not with a view to
           distribution and may not be offered for sale, sold, pledged
           or otherwise transferred in the absence of an effective
           registration statement for such securities under the
           Securities Act of 1933 or an opinion of counsel reasonably
           satisfactory in form and content to the issuer that such
           registration is not required under such Act.

                (b)  The certificates evidencing the Warrant Shares shall also
bear any legend required by any applicable state securities law.

                (c)  In addition, the Company shall make, or cause its transfer
agent to make, a notation regarding the transfer restrictions of the Warrant and
the Warrant Shares in its stock books, and the Warrant and the Warrant Shares
shall be transferred on the books of the Company only if transferred or sold
pursuant to an effective registration statement under the Act covering the same
or pursuant to and in compliance with the provisions of Section 8.1(d).

     9. Piggyback Registration Rights.
        -----------------------------

           9.1  Registration Rights. If at any time during the "Registration
                -------------------
Period" (as hereinafter defined) the Company proposes to file a registration
statement under the Securities Act of 1933, as amended (the "Securities Act")
relating to a proposed sale to the public of its Common Stock, whether or not
for its own account and whether or not pursuant to the exercise of any demand
registration rights held by other security holders (but excluding registrations
relating solely to employee stock option or purchase plans or to transactions
employing Forms S-4 or S-8, a registration in which the only stock being
registered is Common Stock issuable upon conversion of securities which are also
being registered, and any registration on any form which does not include
substantially the same information as would be required to be included in a
registration statement covering the sale of the Warrant Shares), the Company
will each such time give prompt written notice to the Holder of its intention to
do so and of the Holder's rights under this Section 9, at least ten (10) days
prior to the anticipated filing date of the registration statement. Such notice
shall offer Holder the opportunity to include in such registration statement
such number of Warrant Shares as Holder may request. For purposes hereof, the
term "Registration Period" shall mean the period commencing on the date hereof
and ending

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when all the Warrant Shares may be sold within any three (3) month period
pursuant to Rule 144 of the Securities Act.

           9.2  Registration Procedures. Upon the written request of Holder made
                -----------------------
within ten (10) days after receipt of the Company's notice (which request shall
specify the number of Warrant Shares intended to be disposed of by Holder), the
Company will use its best efforts to effect the registration under the
Securities Act and the qualification under any applicable state securities or
Blue Sky laws of all Warrant Shares which the Company has been so requested to
register by Holder; provided that: (i) if the registration involves an
underwritten public offering, Holder requesting that Warrant Shares be included
in the Company's registration statement must, upon request by the
underwriter(s), sell their Warrant Shares to such underwriter(s) selected by the
Company or the security holders for whose account the registration is being
effected on the same terms and conditions as apply to the Company or the selling
security holders on whose account the registration is being effected; and (ii)
if a registration involves an underwritten public offering, Holder requesting to
be included in such registration may elect in writing at least ten (10) days
prior to the effective date of the registration statement filed in connection
with such registration, not to register any Warrant Shares thereunder. The
Company shall have the right to terminate or withdraw any registration initiated
by it prior to the effectiveness of the registration statement whether or not
any Holder has elected to include any Warrant Shares in the registration.

           9.3  Priority on Registration. Further, and notwithstanding the
                ------------------------
foregoing, if a registration involves an underwritten offering and the managing
underwriter advises the Company in writing that, in its opinion, the total
number of shares to be included in such registration, including the Warrant
Shares requested to be included pursuant to this Section 9, exceeds the maximum
number of shares of Common Stock specified by the managing underwriter that may
be distributed without adversely affecting the price, timing or distribution of
such shares of Common Stock, then the Company, subject to any pre-existing
agreements giving any other security holders priority, shall include in such
registration only such maximum number of shares which, in the reasonable opinion
of such underwriter or underwriters can be sold in the following order of
priority: (i) first, all of the shares of Common Stock that the Company proposes
to sell for its own account or, in the case of a demand registration effected
for the account of other security holders, all of the shares of Common Stock
that such security holders propose to sell for their own account, and (ii)
second, the Warrant Shares and all other shares requested to be included by
other holders of Common Stock (except those exercising a demand right) and, in
the case of a demand registration, all shares to be included for the account of
the Company. To the extent that shares of Common Stock to be included in the
registration must be allocated among Holder and/or other security holders and/or
the Company, such shares shall be allocated pro rata among Holder and all other
holders of Common Stock who requested inclusion in the registration (except
those holders, if any, exercising a demand right) and, in the case of a demand
registration, the Company, based upon the number of Warrant Shares or other
securities that such holders and/or the Company shall have requested be included
in the registration.

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     10. Notices. All notices and other communications from the Company to the
         -------
Holder of this Warrant shall be mailed by first-class registered or certified
mail, postage prepaid, to the address furnished to the Company by Holder.

     11. Change; Waiver. Neither this Warrant nor any term hereof may be
         --------------
changed, waived, discharged or terminated orally, but only by an instrument in
writing signed by the party against which enforcement of the change, waiver,
discharge or termination is sought.

     12. Headings.  The headings in this Warrant are for purposes of convenience
         --------
in reference only, and shall not be deemed to constitute a part hereof.

     13. Governing Law.  This Warrant is delivered in California and shall be
         -------------
construed and enforced in accordance with and governed by the internal laws, and
not the law of conflicts, of such State; provided however, that to the extent
that an issue of determination is one of corporation law, then the Delaware
General Corporation Law shall govern.

                         PROTEIN POLYMER TECHNOLOGIES, INC.,
                         a Delaware corporation

                         By______________________________________
                               J. Thomas Parmeter, President

                                       8
<PAGE>

                               SUBSCRIPTION FORM
                 (To be executed only upon exercise of Warrant)

     The undersigned, registered owner of this Warrant, irrevocably exercises
this Warrant and purchases ____________ of the number of shares of Common
Stock, $.01 par value, of PROTEIN POLYMER TECHNOLOGIES, INC., a Delaware
corporation, purchasable with this Warrant, and herewith makes payment therefor,
all at the price and on the terms and conditions specified in this Warrant.

DATED:______________

                                  ______________________________
                                  (Signature of Registered Owner)

                                  ______________________________
                                  (Street Address)

                                  ______________________________
                                  (City)        (State)    (Zip)

                                       9
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                               FORM OF ASSIGNMENT
                               ------------------

     FOR VALUE RECEIVED the undersigned, registered owner of this Warrant,
hereby sells, assigns and transfers unto the Assignee named below all of the
rights of the undersigned under the within Warrant, with respect to the number
of shares of Common Stock, $.01 par value, set forth below:

Name of Assignee                  Address                No. of Shares
----------------                  -------                -------------

and does hereby irrevocably constitute and appoint _________________________
_________________________________________________ Attorney to make such transfer
on the books of PROTEIN POLYMER TECHNOLOGIES, INC., a Delaware corporation,
maintained for the purpose, with full power of substitution in the premises.

DATED: ___________________

                                           ________________________
                                                  (Signature)

                                           ________________________
                                                   (Witness)

                                       10February 14, 2001

AT&T Wireless Services, Inc.
7277 164th Avenue, NE
Redmond, WA 98052
Attn:  William Hague

      Re:  Termination of Equity Purchase Agreement and Put Rights Agreement
           -----------------------------------------------------------------

Ladies and Gentlemen:

      Reference is made to that certain Equity Purchase Agreement (for TeleCorp
Shares), dated as of December 22, 2000 (the "Equity Purchase Agreement"), among
Gerald T. Vento ("Vento"), Thomas H. Sullivan ("Sullivan") and AT&T Wireless
Services, Inc. ("AT&T Wireless") and that certain Put Rights Agreement, dated as
of December 22, 2000, among AT&T Wireless, Vento and Sullivan (the "Put
Agreement").

      In consideration of the mutual premises and covenants set forth herein,
AT&T Wireless, Vento and Sullivan intending to be and being legally bound, agree
as follows:

      1.  Termination of the Equity Purchase Agreement.  The Equity Purchase
Agreement is hereby terminated and shall no longer be of any force or
effect.  None of the parties hereto shall have any further obligations under
the Equity Purchase Agreement or as a result of its termination.

      2.  Termination of the Put Agreement.  The Put Agreement is hereby
terminated and shall no longer be of any force or effect.  None of the
parties hereto shall have any further obligations under the Put Agreement or
as a result of its termination.

      3.  Release of Vento and Sullivan by AT&T Wireless. AT&T Wireless hereby
discharges and releases each of Vento and Sullivan from any and all claims and
causes of action that AT&T Wireless may have against either of Vento or Sullivan
as of the date hereof and hereafter relating to the Equity Purchase Agreement or
the Put Agreement or the termination of either.

      4.  Release of AT&T Wireless by Vento and Sullivan. Each of Vento and
Sullivan hereby discharges and releases AT&T Wireless and its affiliates, and
their officers, directors, employees, agents and representatives (each an "AT&T
Entity") from any and all claims and causes of action that either Vento or
Sullivan may have against AT&T Wireless or any AT&T Entity as of the date hereof
and hereafter relating to the Equity Purchase Agreement or the Put Agreement or
the termination of either.

      5.  Consideration.  No party has received consideration for entering
into this agreement other than the mutual premises and covenants expressly
set forth herein.

<PAGE>

      If you are in agreement with the terms of this letter, please sign a copy
of the same in the space provided below and return it to the undersigned.

                                                Very truly yours,

                                                ---------------------------
                                                Gerald T. Vento

                                                ---------------------------
                                                Thomas H. Sullivan

<PAGE>

Agreed and accepted as of the date hereof:

AT&T WIRELESS SERVICES, INC.

BY:
      -----------------------------
      Name:   William W. Hague
      Title:  Senior Vice President

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