Recombinant β-glucosidase variants for production of soluble sugars from cellulosic biomass
    6.
    发明授权
    Recombinant β-glucosidase variants for production of soluble sugars from cellulosic biomass 有权
    用于从纤维素生物质生产可溶性糖的重组和葡糖苷酶变体

    公开(公告)号:US08685690B2

    公开(公告)日:2014-04-01

    申请号:US13416608

    申请日:2012-03-09

    IPC分类号: C12N9/42 C12P19/02 C12P19/00

    摘要: The invention relates to recombinant expression of a variant form of a fungal C1 strain β-glucosidase. The invention also relates to the generation of fermentable sugars from biomass and the production of biofuels by fermentation of the sugars using genetically modified organisms expressing the β-glucosidase variant. The invention provides methods for producing a fermentable sugar, such as glucose, from cellobiose by contacting cellobiose with a recombinant β-glucosidase variant protein, such as a variant protein secreted by a recombinant host cell into culture medium. Methods of the invention may be used for conversion of a biomass substrate to a fermentable sugar, and ultimately to ethanol or other biofuel.

    摘要翻译: 本发明涉及真菌C1菌株和葡萄糖苷酶的变体形式的重组表达。 本发明还涉及通过使用表达“葡糖苷酶”变体的转基因生物体从生物质产生可发酵糖并通过发酵糖生产生物燃料。 本发明提供了通过将纤维二糖与重组体 - 葡糖苷酶变体蛋白(例如由重组宿主细胞分泌的变体蛋白)接触到培养基中来从纤维二糖生产可发酵糖例如葡萄糖的方法。 本发明的方法可用于将生物质底物转化为可发酵的糖,最终转化为乙醇或其他生物燃料。