Polyunsaturated fatty acid production in heterologous...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 15/52 (2006.01) A01H 5/00 (2006.01) A23D 9/00 (2006.01) A61K 31/202 (2006.01) C11B 1/00 (2006.01) C12N 5/04 (2006.01) C12N 9/00 (2006.01) C12N 15/82 (2006.01) C12P 7/64 (2006.01)

Patent

CA 2646317

Disclosed are novel acyl-CoA synthetases and novel acyltransferases, nucleic acid molecules encoding the same, recombinant nucleic acid molecules and recombinant host cells comprising such nucleic acid molecules, genetically modified organisms (microorganisms and plants) comprising the same, and methods of making and using the same. Also disclosed are genetically modified organisms (e.g., plants, microorganisms) that have been genetically modified to express a PKS-like system for the production of PUFAs (a PUFA PKS system or PUFA synthase), wherein the organisms have been modified to express an acyl-CoA synthetase, to express an acyl transferase, to delete or inactivate a fatty acid synthase (FAS) expressed by the organism, to reduce competition for malonyl CoA with the PUFA synthase or to increase the level of malonyl CoA in the organism, and in one aspect, to inhibit KASII or KASIII. Additional modifications, and methods to make and use such organisms, in addition to PUFAs and oils obtained from such organisms, are disclosed, alone with various products including such PUFAs and oils.

L'invention concerne de nouvelles acyl-CoA synthétases et de nouvelles acyltransférases des molécules d'acides nucléiques les codant, des molécules d'acides nucléiques recombinantes et des cellules hôtes recombinantes contenant ces molécules d'acides nucléiques, des organismes génétiquement modifiés (micro-organismes et plantes) les comprenant, et des procédés de fabrication et d'utilisation de celles-ci. L'invention concerne également des organismes génétiquement modifiés (par exemple, des plantes, des micro-organismes) qui ont été génétiquement modifiés afin d'exprimer un système de type polycétide synthase (PKS) destiné à la production de PUFA (un système PKS PUFA ou une synthase PUFA), les organismes ayant été modifiés afin d'exprimer une acyl-CoA synthétase, afin d'exprimer une acyltransférase, afin de supprimer ou inactiver une synthase d'acide gras (FAS) exprimée par l'organisme et, afin de réduire la compétition pour le malonyl CoA avec la synthase PUFA ou afin d'augmenter le niveau de malonyl CoA dans l'organisme, et dans un autre aspect, afin d'inhiber KASII ou KASIII. L'invention concerne également d'autres modifications, et des procédés destinés à fabriquer et à utiliser ces organismes, en plus des PUFA et des huiles obtenus à partir de ces organismes, seuls avec divers produits contenant ces PUFA et ces huiles.

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