Expression system derived from the lipase regulation cascade...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/78 (2006.01) C07K 14/21 (2006.01) C12N 1/21 (2006.01) C12N 9/12 (2006.01) C12N 9/20 (2006.01) C12N 15/31 (2006.01) C12N 15/54 (2006.01) C12N 15/55 (2006.01)

Patent

CA 2262510

An expression system is provided which comprises component(s) of a lipase regulation cascade. The lipase regulation cascade as disclosed herein includes a kinase, a DNA binding regulator, a polymerase, a promoter, an upstream activating sequence, and secretion factors. Plasmids and transformed cells are also provided as well as methods of transforming host cells using the plasmids. Further, there is provided a kinase that can regulate the expression of a protein, a DNA binding regulator that can regulate the expression of a protein, a Pseudomonas alcaligenes polymerase, a Pseudomonas alcaligenes sigma 54 promoter, a Pseudomonas alcaligenes upstream activating sequence, the Pseudomonas alcaligenes secretion factors XcpP, XcpQ, XcpR, XcpS, XcpT, XcpU, XcpV, XcpW, XcpX, XcpY, XcpZ and the xcp regulators OrfV, OrfX.

Cette invention concerne un nouveau système d'expression comportant un(des) composant(s) d'une cascade de régulation de la lipase. Ladite cascade de régulation de la lipase comporte une kinase, un régulateur de liaison à l'ADN, une polymérase, un promoteur, une séquence d'activation en amont et des facteurs de sécrétion. L'invention se rapporte également à des plasmides et à des cellules transformées ainsi qu'à des procédés de transformation de cellules hôte utilisant lesdits plasmides. L'invention se rapporte en outre à une kinase capable de réguler l'expression d'une protéine, à un régulateur de liaison à l'ADN capable de réguler l'expression d'une protéine, à une polymérase de Pseudomonas alcaligenes, à un promoteur sigma 54 de Pseudomonas alcaligenes, à une séquence d'activation en amont de Pseudomonas alcaligenes, aux facteurs de sécrétion de Pseudomonas alcaligenes que sont XcpP, XcpQ, XcpR, XcpS, XcpT, XcpU, XcpV, XcpW, XcpX, XcpY, XcpZ et aux régulateurs de xcp que sont OrfV et OrfX.

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