Plant fatty acid epoxygenase genes and uses therefor

Details Plant fatty acid epoxygenase genes and uses therefor Plant fatty acid epoxygenase genes and uses therefor

C - Chemistry, Metallurgy

12

N

C12N 15/53 (2006.01) C12N 9/02 (2006.01) C12N 15/82 (2006.01) C12P 7/64 (2006.01)

Patent

CA 2286895

The present invention relates generally to novel genetic sequences which encode fatty acid epoxygenase enzymes. In particular, the present invention relates to genetic sequences which encode fatty acid .DELTA.12-epoxygenase enzymes comprising mixed function monooxygenase enzymes. More preferably, the present invention provides cDNA sequences which encode plant fatty acid epoxygenases, in particular the Crepis palaestina .DELTA.12-epoxygenase and homologues, analogues and derivatives thereof. The genetic sequences of the present invention provide the means by which fatty acid metabolism may be altered or manipulated in organisms such as yeasts, moulds, bacteria, insects, birds, mammals and plants, in particular to convert unsaturated fatty acids to epoxygenated fatty acids therein. The invention extends to genetically modified oil-accumulating organisms transformed with the subject genetic sequences and to the oils derived therefrom. The oils thus produced provide the means for the cost-effective raw materials for use in the efficient production of coatings, resins, glues, plastics, surfactants and lubricants, amongst others.

L'invention porte de manière générale sur de nouvelles séquences génétiques codant les époxygénases d'acides gras. L'invention concerne en particulier les séquences génétiques codant les .DELTA.12-époxygénases d'acides gras incluant des monoxygénases à fonctions mixtes. De préférence, l'invention concerne des séquences d'ADNc codant les époxygénases d'acide gras d'origine végétale en particulier la .DELTA.12-époxygénase de Crepis palaestina et homologues, analogues et dérivés de cette dernière. Ces séquences génétiques permettent de modifier ou de manipuler le métabolisme des acides gras dans des organismes tels que levures, moisissures, bactéries, insectes, oiseaux, mammifères et plantes, en particulier pour convertir dans ces organismes les acides gras insaturés en acides gras époxygénés. L'invention s'étend aux organismes génétiquement modifiés accumulant de l'huile et transformés par ces séquences génétiques, et aux huiles tirées de ces organismes. Les huiles ainsi produites permettent d'obtenir des matières brutes avantageuses convenant à une production efficace de revêtements, résines, colles, plastiques, tensio-actifs et lubrifiants, etc.

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