The present invention provides for a polyketide synthase (PKS) capable of synthesizing a 3-hydroxycarboxylic acid or ketone. The present invention also provides for a host cell comprising the PKS and when cultured produces the 3-hydroxycarboxylic acid or ketone.

A method of producing a long-chain fatty alcohol, containing culturing a microorganism wherein expression of a gene encoding a 3-ketoacyl-ACP synthase and expression of a gene encoding a fatty acyl-CoA reductase are enhanced; a method of providing ability to produce a long-chain fatty alcohol for a microorganism wherein expression of a gene encoding a 3-ketoacyl-ACP synthase and expression of a gene encoding a fatty acyl-CoA reductase are enhanced in a microorganism cell; and a transformant of a microorganism in which expression of a gene encoding a -ketoacyl-ACP synthase and expression of a gene encoding a fatty acyl-CoA reductase are enhanced.

The disclosure relates to recombinant host cells including strain modifications effective to improve titer, yield and/or productivity of fatty acid derivatives. The disclosure further relates to cell cultures including the recombinant host cells for the fermentative production of fatty acid derivatives and compositions thereof.

A method of producing lipids, containing the steps of: culturing a transformant in which the expression of a gene encoding the following protein (A) or (B) is enhanced, and producing long-chain fatty acids or the lipids containing these fatty acids as components, wherein:
protein (A) is a protein consisting of the amino acid sequence set forth in SEQ ID NO: 1; and
protein (B) is a protein consisting of an amino acid sequence having 70% or more identity with the amino acid sequence of the protein (A), and having ?-ketoacyl-ACP synthase activity.

The disclosure relates to variant carboxylic acid reductase (CAR) enzymes for the improved production of fatty alcohols in recombinant host cells.

The present invention provides for a polyketide synthase (PKS) capable of synthesizing a 3-hydroxycarboxylic acid or ketone. The present invention also provides for a host cell comprising the PKS and when cultured produces the 3-hydroxycarboxylic acid or ketone.

A method of producing lipids, containing the steps of: culturing a transformant in which the expression of a gene encoding the following protein (A) or (B) is enhanced, and producing long-chain fatty acids or the lipids containing these fatty acids as components, wherein: protein (A) is a protein consisting of the amino acid sequence set forth in SEQ ID NO: 1; and protein (B) is a protein consisting of an amino acid sequence having 70% or more identity with the amino acid sequence of the protein (A), and having ?-ketoacyl-ACP synthase activity.

Recombinant DNA techniques are used to produce oleaginous recombinant cells that produce triglyceride oils having desired fatty acid profiles and regiospecific or stereospecific profiles. Genes manipulated include those encoding stearoyl-ACP desaturase, delta 12 fatty acid desaturase, acyl-ACP thioesterase, ketoacyl-ACP synthase, and lysophosphatidic acid acyltransferase. The oil produced can have enhanced oxidative or thermal stability, or can be useful as a frying oil, shortening, roll-in shortening, tempering fat, cocoa butter replacement, as a lubricant, or as a feedstock for various chemical processes. The fatty acid profile can be enriched in midchain profiles or the oil can be enriched in triglycerides of the saturated-unsaturated-saturated type.

Metabolically engineered microorganism strains are disclosed, such as bacterial strains, in which there is an increased utilization of malonyl-CoA for production of a chemical product. Such chemical products include polyketides, 3-hydroxypropionic acid, and various other chemical products described herein. Methods of production also may be applied to further downstream products, such as consumer products. In various embodiments, modifications to a microorganism and/or culture system divert, at least transiently, usage of malonyl-coA from the fatty acid biosynthesis pathway and thereby provides for usage of the malonyl-coA for a chemical product other than a fatty acid. In various embodiments, the fatty acid biosynthesis pathway is modulated to produce specific fatty acids or combinations of fatty acids.

Metabolically engineered microorganism strains are disclosed, such as bacterial strains, in which there is an increased utilization of malonyl-CoA for production of a chemical product. Such chemical products include polyketides, 3-hydroxypropionic acid, and various other chemical products described herein. Methods of production also may be applied to further downstream products, such as consumer products. In various embodiments, modifications to a microorganism and/or culture system divert, at least transiently, usage of malonyl-coA from the fatty acid biosynthesis pathway and thereby provides for usage of the malonyl-coA for a chemical product other than a fatty acid. In various embodiments, the fatty acid biosynthesis pathway is modulated to produce specific fatty acids or combinations of fatty acids.