Process for producing prenyl alcohol

C - Chemistry – Metallurgy – 12 – N

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C12N 15/52 (2006.01) C12N 1/19 (2006.01) C12N 1/21 (2006.01) C12N 9/04 (2006.01) C12N 9/10 (2006.01) C12N 9/90 (2006.01) C12P 7/04 (2006.01)

Patent

CA 2433534

A process for producing prenyl alcohol characterized by comprising culturing mutated cells having been mutated so as to reduce the amount of the transcriptional product of squalene synthase gene having a translation activity and then collecting prenyl alcohol from the culture medium thus obtained. To reduce the amount of the transcriptional product, mutated cells, wherein the transcriptional promoter domain of the squalene synthase has been substituted by a transcription inhibitory promoter such as GAL1, are cultured under transcription inhibitory conditions. Moreover, a process comprising constructing a recombinant by transferring an expression DNA or a genome integration DNA containing an isopentenyl diphosphate synthesis pathway- associated enzyme gene, culturing the obtained recombinant and then collecting prenyl alcohol from the culture medium is provided.

L'invention concerne un procédé de production d'alcool de prényl consistant d'abord à mettre en culture des cellules mutantes ayant subi une mutation pour réduire la quantité de produit transcriptionnel dans un gène synthase de squalène à fonction de traduction, puis à récupérer l'alcool de prényl du milieu de culture ainsi obtenu. Pour réduire la quantité de produit transcriptionnel, les cellules mutantes, dans lesquelles le site du promoteur transcriptionnel de la synthase de squalène a été substitué par un promoteur inhibiteur de transcription tel que GAL1, sont mises en culture dans des conditions d'inhibition de transcription. Par ailleurs, l'invention concerne un procédé consistant à construire un recombiné en transférant un ADN d'expression ou un ADN d'intégration dans le génome contenant un gène d'enzyme associée au processus de synthèse de diphosphate d'isopentyle, à mettre en culture le recombiné obtenu, et enfin, à récupérer l'alcool de prényl.

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