POWER OF ATTORNEY





 KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and appoints

Chris Jaenike, Stephen Dobson, Vincent Fontanilla and Nanette Agustines, each with power to act without

the others, his or her true and lawful attorney-in-fact to:



 (1) execute for and on behalf of the undersigned, in the undersigned?s capacity as a director

and/or officer of Amyris, Inc. (the ?Company?), any and all Form ID filings, Forms 3, 4

and 5 reports and any amendments thereto required to be filed by the undersigned in

accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules and

regulations thereunder with respect to transactions in Company securities;



 (2) do and perform any and all acts for and on behalf of the undersigned which may be

necessary or desirable to complete and execute any such Form ID filings, Forms 3, 4 and

5 reports and any amendments thereto and timely file such forms with the United States

Securities and Exchange Commission and any stock exchange or similar authority; and



 (3) take any other action which, in the opinion of such attorney-in-fact, may be of benefit to,

in the best interest of, or legally required by, the undersigned in connection with the

foregoing powers.



 The undersigned hereby grants to each such attorney-in-fact full power and authority to do and

perform any and every act and thing whatsoever requisite, or proper to be done in the exercise of any of

the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or

could do if personally present, with full power of substitution or revocation, hereby ratifying and

confirming all that any such attorney-in-fact, or such attorney-in-fact?s substitute or substitutes, shall

lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein

granted.  The undersigned acknowledges that each such attorney-in-fact, in serving in such capacity at the

request of the undersigned, is not assuming, nor is the Company assuming, any of the undersigned?s

responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.



 This Power of Attorney (i) supersedes any and all prior powers of attorney granted by the

undersigned with respect to the powers granted above, and (ii) shall remain in full force and effect until

the undersigned is no longer required to file Forms 3, 4 or 5 with respect to the undersigned?s holdings of

and transactions in Company securities, unless earlier revoked by the undersigned in a signed writing

delivered to any of the foregoing attorneys-in-fact.



 IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed

as of this 14 day of September, 2016.





By:  /s/ Karen Weaver

        Karen Weaver