Heterologous Biomass Degrading Enzyme Expression in Thermoanaerobacterium Saccharolyticum
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    发明申请
    Heterologous Biomass Degrading Enzyme Expression in Thermoanaerobacterium Saccharolyticum 有权
    异源生物量降解酵母菌中的酶表达

    公开(公告)号:US20120040409A1

    公开(公告)日:2012-02-16

    申请号:US13141952

    申请日:2009-12-23

    摘要: Thermophilic gram-positive anaerobic host cells, for example Thermoanaerobacterium saccharolyticum (“T sacch”), express heterologous biomass degrading enzymes, such as cellulases, and are able to produce useful fermentation products from cellulose. Useful fermentation products include, for example, ethanol, acetic acid, lactic acid or CO2. In order to provide maximum expression and activity levels, biomass degrading enzymes can be expressed from codon-optimized nucleotide sequences, can be expressed under the control of a high-efficiency promoter, and/or can be fused to a signal peptide. In addition, the host cell, for example, a T sacch host cell, can be genetically altered to further improve ethanol production, for example by disrupting the production of organic products other than ethanol.

    摘要翻译: 嗜热革兰氏阳性厌氧宿主细胞,例如解糖热酵母杆菌(“T sacch”)表达异源生物降解酶,如纤维素酶,并且能够从纤维素产生有用的发酵产物。 有用的发酵产物包括例如乙醇,乙酸,乳酸或二氧化碳。 为了提供最大的表达和活性水平,生物降解酶可以由密码子优化的核苷酸序列表达,可以在高效启动子的控制下表达,和/或可以与信号肽融合。 此外,宿主细胞,例如T细胞宿主细胞,可进行遗传改变以进一步改善乙醇生产,例如通过破坏除乙醇以外的有机产物的生产。