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    • 3. 发明授权
    • Microbial strains producing sphingoid bases or derivatives thereof
    • 产生螺旋体碱或其衍生物的微生物菌株
    • US09234222B2
    • 2016-01-12
    • US11666863
    • 2005-11-07
    • Marco Alexander Van Den BergSteffen Schaffer
    • Marco Alexander Van Den BergSteffen Schaffer
    • C12P13/00C12P13/02
    • 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.
    • 本发明提供了生产至少0.1mg / g生物量干重的类鞘氨醇碱的微生物菌株,特别是酵母菌株。 本发明还提供一种获得产生类鞘氨醇碱的微生物菌株的方法,包括在合适浓度的毒素存在下孵育一群微生物细胞,选择对所述毒素具有抗性的细胞,以及从毒素 - 产生至少0.1mg / g生物质干重的式I的类鞘氨醇碱。任选地,所述方法还包括使生产至少0.1mg / g生物量干重的毒素抗性微生物细胞群体 式I的鞘氨醇类碱基与编码鞘脂代谢途径酶的多核苷酸进行DNA介导的转化。 本发明还提供一种具有从毕赤酵母(Pichia ciferrii)获得的二氢神经酰胺去饱和酶活性的多肽。
    • 4. 发明申请
    • Microbial Strains Producing Sphingoid Bases or Derivatives Thereof
    • 产生鞘氨醇碱或其衍生物的微生物菌株
    • US20080299625A1
    • 2008-12-04
    • US11666863
    • 2005-11-07
    • Marco Alexander Van Den BergSteffen Schaffer
    • Marco Alexander Van Den BergSteffen Schaffer
    • C12P13/00C12N1/19C12N15/87C12N9/00C12N15/11
    • 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.
    • 本发明提供了生产至少0.1mg / g生物量干重的类鞘氨醇碱的微生物菌株,特别是酵母菌株。 本发明还提供一种获得产生类鞘氨醇碱的微生物菌株的方法,包括在合适浓度的毒素存在下孵育一群微生物细胞,选择对所述毒素具有抗性的细胞,以及从毒素 - 产生至少0.1mg / g生物质干重的式I的类鞘氨醇碱。任选地,所述方法还包括使生产至少0.1mg / g生物量干重的毒素抗性微生物细胞群体 式I的鞘氨醇类碱基与编码鞘脂代谢途径酶的多核苷酸进行DNA介导的转化。 本发明还提供一种具有从毕赤酵母(Pichia ciferrii)获得的二氢神经酰胺去饱和酶活性的多肽。
    • 8. 发明授权
    • Method for obtaining a microbial strain for production of sphingoid bases
    • 获得用于生产类鞘氨醇碱的微生物菌株的方法
    • US08372595B2
    • 2013-02-12
    • US12300397
    • 2007-05-11
    • Steffen SchafferMarco Alexander Van Den BergDaniel BoergelThomas Hueller
    • Steffen SchafferMarco Alexander Van Den BergDaniel BoergelThomas Hueller
    • G01N33/53C12P7/18C12N1/00
    • C12N9/80A61K8/68A61K2800/86A61Q19/00C12N9/0071C12N9/1029
    • The present invention provides genetically engineered microbial strains, in particular genetically engineered yeast strains, that produce at least 0.5 mg per g CDW of a sphingoid base according to Formula I or a salt or ester thereof. The present invention provides a method to obtain genetically engineered microbial strains producing at least 0.5 mg per g CDW of a sphingoid base according to Formula I or a salt or ester thereof. The method comprises the steps of: a) increasing the expression of a polynucleotide encoding an enzyme having ceramide synthase activity and/or an enzyme having ceramidase activity, the latter being capable of preferentially, or even specifically, hydrolyzing ceramides containing a sphingoid base according to Formula I, and/or b) decreasing the expression of a polynucleotide encoding an enzyme having sphingolipid Δ8-desaturase activity and/or an enzyme having ceramidase activity, the latter being capable of preferentially, or even specifically, hydrolyzing ceramides containing phytosphingosine or dihydrosphingosine as sphingoid base, and isolating strains with the required productivity.
    • 本发明提供基因工程微生物菌株,特别是遗传工程酵母菌株,其产生至少0.5mg / g CDW的根据式I的鞘氨醇碱或其盐或酯。 本发明提供了一种获得基因工程的微生物菌株的方法,其产生至少0.5mg / g CDW的根据式I的鞘氨醇碱或其盐或酯。 该方法包括以下步骤:a)增加编码具有神经酰胺合成酶活性的酶的多核苷酸和/或具有神经酰胺酶活性的酶的表达,后者能够优先或甚至具体地水解含有类鞘氨醇碱的神经酰胺根据 式I,和/或b)减少编码具有鞘脂和Dgr.8-去饱和酶活性的酶的多核苷酸的表达和/或具有神经酰胺酶活性的酶,后者能够优先或甚至具体地水解含有植物鞘氨醇的神经酰胺或 二氢鞘氨醇作为鞘氨醇碱,并以所需的生产力分离菌株。