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                                                                   EXHIBIT 31.3

                                 CERTIFICATION

I, James E. Levine, certify that:

   1. I have reviewed this Amendment No. 1 to the Quarterly Report on Form 10-Q
for the quarter ended September 30, 2010 of Verenium Corporation;

   2. Based on my knowledge, this report does not contain any untrue statement
of a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements were
made, not misleading with respect to the period covered by this report;

   3. Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects
the financial condition, results of operations and cash flows of the registrant
as of, and for, the periods presented in this report;

   4. The registrant's other certifying officer(s) and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial
reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the
registrant and have:

      a) Designed such disclosure controls and procedures, or caused such
   disclosure controls and procedures to be designed under our supervision, to
   ensure that material information relating to the registrant, including its
   consolidated subsidiaries, is made known to us by others within those
   entities, particularly during the period in which this report is being
   prepared;

      b) Designed such internal control over financial reporting, or caused
   such internal control over financial reporting to be designed under our
   supervision, to provide reasonable assurance regarding the reliability of
   financial reporting and the preparation of financial statements for external
   purposes in accordance with generally accepted accounting principles;

      c) Evaluated the effectiveness of the registrant's disclosure controls
   and procedures and presented in this report our conclusions about the
   effectiveness of the disclosure controls and procedures as of the end of the
   period covered by this report based on such evaluation; and

      d) Disclosed in this report any change in the registrant's internal
   control over financial reporting that occurred during the registrant's most
   recent fiscal quarter (the registrant's fourth quarter in the case of an
   annual report) that has materially affected, or is reasonably likely to
   materially affect, the registrant's internal control over financial
   reporting; and

   5. The registrant's other certifying officer(s) and I have disclosed, based
on our most recent evaluation of internal control over financial reporting, to
the registrant's auditors and the audit committee of registrant's board of
directors (or persons performing the equivalent functions):

      a) All significant deficiencies and material weaknesses in the design or
   operation of internal control over financial reporting which are reasonably
   likely to adversely affect the registrant's ability to record, process,
   summarize and report financial information; and

      b) Any fraud, whether or not material, that involves management or other
   employees who have a significant role in the registrant's internal control
   over financial reporting.

Date: May 12, 2011

/s/ James E. Levine
--------------------------
James E. Levine
President, Chief
  Executive Officer and
  Director
(Principal Executive
  Officer)