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    • 5. 发明申请
    • MICROBIAL STRAINS PRODUCING SPHINGOID BASES OR DERIVATIVES THEREOF
    • 产生闪锌矿基的微生物菌株或其衍生物
    • WO2006048458A2
    • 2006-05-11
    • PCT/EP2005055791
    • 2005-11-07
    • COSMOFERM BVVAN DEN BERG MARCO ALEXANDERSCHAFFER STEFFEN
    • VAN DEN BERG MARCO ALEXANDERSCHAFFER STEFFEN
    • C12P13/001C12P13/02
    • The present invention provides microbial strains, in particular yeast strains, that produce at least 0.1 mg per g biomass dry weight of a sphingoid base. The present invention further provides a method to obtain sphingoid base-producing microbial strains comprising incubating a population of microbial cells in the presence of a suitable concentration of a toxin, selecting cells that are resistant against said toxin, and isolating cells out of the toxin- resistant cell population that produce at least 0.1 mg per g biomass dry weight of the sphingoid base of Formula (I). Optionally, the method further comprises subjecting a population of toxin-resistant microbial cells that produce at least 0.1 mg per g biomass dry weight of the sphingoid base of Formula (I) to DNA-mediated transformation with a polynucleotide encoding an enzyme of the sphingolipid metabolic pathway. The present invention further provides a polypeptide having dihydroceramide desaturase activity obtainable form Pichia ciferrii.
    • 本发明提供了产生至少0.1mg / g生物质干重的鞘氨醇碱的微生物菌株,特别是酵母菌株。 本发明进一步提供了获得产鞘氨醇碱微生物菌株的方法,包括在合适浓度的毒素存在下孵育微生物细胞群,选择对所述毒素具有抗性的细胞,以及从毒素 - (I)的类鞘氨醇碱基产生至少0.1mg / g生物质干重的抗性细胞群。 任选地,所述方法进一步包括使产生至少0.1mg / g生物质干重的式(I)鞘氨基醇碱基的抗毒素微生物细胞群体与编码鞘脂类代谢酶的多核苷酸的DNA介导的转化 途径。 本发明进一步提供了可从毕赤酵母获得的具有二氢神经酰胺去饱和酶活性的多肽。