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US 2015/0353976 A1Published application
Engineered biocatalysts useful for carbapenem synthesis
AssigneeCodexis, Inc.
InventorsJoly Sukumaran, Derek Smith, Hong Yang, Wan Lin Yeo, Jeffrey C. Moore
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Abstract
The present disclosure provides engineered pNB esterase polypeptides useful for the synthesis of the carbapenem antibiotic, imipenem. The disclosure also provides polynucleotides encoding the engineered pNB esterases, host cells capable of expressing the engineered pNB esterases, and methods of using the engineered pNB esterases in the production of imipenem.
Claims39
An engineered polypeptide having pNB esterase activity, comprising an amino acid sequence having at least 80% identity to SEQ ID NO:
- 2 and one or more residue differences as compared to SEQ ID NO:2 at residue positions selected from:
- X108, X115, X116, X130, X193, X214, X219, X273, X276, X321, and X362.
Dependencies are inferred from the claim text.