Compositions and methods for production of myrcene
AssigneeAmyris, Inc.
InventorsAndrew Main, Grzegorz Wojciechowski, Yue Yang, Lishan Zhao
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Abstract
Provided herein are compositions and methods for producing myrcene by culturing genetically modified microbial host cells that express a myrcene synthase and optionally a geranyl pyroplosphate synthase. Also provided herein are isolated nucleic acid molecules that encode myrcene synthase variants derived from the Ocimum species myrcene synthase, which comprise one or more amino acid substitutions that improve in vivo performance of myrcene synthase in genetically modified microbial host cells. Also provided herein are isolated myrcene synthase variants that exhibit an improved activity for converting geranyl diphosphate into myrcene.
Claims26
A genetically modified microbial host cell comprising:
- (a) a heterologous nucleic acid molecule encoding an Ocimum species myrcene synthase that comprises:
- an amino acid sequence that has at least 70% sequence identity to SEQ ID NO:
- 2, and at least one variant amino acid residue at position 27, 28, 207, 213, 222, 342, 347, 381, 382, 389, 390, 401, 404, 428, 439, 466, 482, 484, 505, 514, 517, 524, 527, 528, 543, 544, and 552, wherein the positions are numbered with reference to SEQ ID NO:
- 2;
- and
- (b) a heterologous nucleic acid molecule encoding a geranyl pyrophosphate synthase.
An isolated nucleic acid molecule encoding a myrcene synthase, wherein the myrcene synthase comprises:
- (a) an amino acid sequence that has at least about 70% sequence identity to SEQ ID NO:
- 2;
- and
- (b) at least one variant amino acid residue compared to SEQ ID NO:
- 2 at one or more of positions selected from the group of positions consisting of positions 27, 28, 207, 213, 222, 342, 347, 381, 382, 389, 390, 401, 404, 428, 439, 466, 482, 484, 505, 514, 517, 524, 527, 528, 543, 544, and 552, wherein the positions are numbered with reference to SEQ ID NO:
- 2.
Dependencies are inferred from the claim text.