CODON-OPTIMIZED GENES FOR THE PRODUCTION OF POLYUNSATURATED FATTY ACIDS IN OLEAGINOUS YEASTS

摘要

The present invention relates to fatty acid desaturases and elongases able to catalyze the conversion of linoleic acid (LA) to ?-linolenic acid (GLA); a-linoleic acid (ALA) to stearidonic acid (STA); GLA to dihomo-?-linoleic acid (DGLA); STA to eicosatetraenoic acid (ETA); DGLA to ETA; eicosapentaenoic acid (EPA) to docosapentaenoic acid (DPA); and arachidonic acid (ARA) to EPA. Nucleic acid sequences encoding codon-optimized desaturases and elongases, nucleic acid sequences which hybridize thereto, DNA constructs comprising the codon-optimized desaturase or elongases, and recombinant host microorganisms expressing increased levels of desaturase or elongase are described.