Glucose dehydrogenase
    3.
    发明授权
    Glucose dehydrogenase 有权
    葡萄糖脱氢酶

    公开(公告)号:US08329439B2

    公开(公告)日:2012-12-11

    申请号:US12665656

    申请日:2008-06-23

    申请人: Koji Sode

    发明人: Koji Sode

    摘要: A modified pyrroloquinoline quinone glucose dehydrogenase that exhibits a high selectivity for glucose is provided. A modified pyrroloquinoline quinone glucose dehydrogenase is disclosed in which the amino acid residue G at Position 99 of a pyrroloquinoline quinone glucose dehydrogenase (PQQGDH) represented by SEQ ID NO: 1, or the amino acid residue G at Position 100 of the pyrroloquinoline quinone glucose dehydrogenase (PQQGDH) represented by SEQ ID NO: 3, is substituted by the amino acid sequence TGZN (where Z is SX, S, or N and X is any amino acid residue). The modified PQQGDH of the present invention may additionally comprise one or more mutations selected from the group consisting of Q192G, Q192A, or Q192S; L193X; E277X; A318X; Y367A, Y367F, or Y367W; G451C; and N452X (where X is any amino acid residue).

    摘要翻译: 提供了对葡萄糖具有高选择性的改性吡咯并喹啉醌葡萄糖脱氢酶。 公开了由SEQ ID NO:1表示的吡咯并喹啉醌葡萄糖脱氢酶(PQQGDH)的99位的氨基酸残基G或吡咯并喹啉醌葡萄糖脱氢酶的位置100的氨基酸残基G的修饰的吡咯并喹啉醌葡萄糖脱氢酶 (PQQGDH)被氨基酸序列TGZN(其中Z是SX,S或N,X是任何氨基酸残基)取代。 本发明的修饰的PQQGDH可另外包含一个或多个选自Q192G,Q192A或Q192S的突变; L193X; E277X; A318X; Y367A,Y367F或Y367W; G451C; 和N452X(其中X是任何氨基酸残基)。

    NOVEL GLUCOSE DEHYDROGENASE
    5.
    发明申请
    NOVEL GLUCOSE DEHYDROGENASE 有权
    新葡萄糖脱氢酶

    公开(公告)号:US20110020851A1

    公开(公告)日:2011-01-27

    申请号:US12811735

    申请日:2008-12-26

    摘要: The invention provides a glucose dehydrogenase that is an extremely stable enzyme having a thermostability of 80° C. or more, and that does not substantially act upon saccharides other than glucose (e.g., having a reactivity of less than 3% with respect to maltose, galactose, and xylose). The invention also provides a method for producing such an enzyme, and a composition for quantifying glucose using such an enzyme.

    摘要翻译: 本发明提供了一种葡萄糖脱氢酶,其是具有80℃或更高的热稳定性的非常稳定的酶,并且基本上不对葡萄糖以外的糖起作用(例如,相对于麦芽糖具有小于3%的反应性, 半乳糖和木糖)。 本发明还提供了生产这种酶的方法,以及使用这种酶定量葡萄糖的组合物。

    Glucose dehydrogenase/cytochrome fusion protein
    10.
    发明授权
    Glucose dehydrogenase/cytochrome fusion protein 有权
    葡萄糖脱氢酶/细胞色素融合蛋白

    公开(公告)号:US08354112B2

    公开(公告)日:2013-01-15

    申请号:US10574085

    申请日:2004-09-28

    申请人: Koji Sode

    发明人: Koji Sode

    IPC分类号: A61K39/00

    摘要: A fusion protein of pyrroloquinoline quinone glucose dehydrogenase (PQQGDH) and a cytochrome is disclosed. PQQGDH is, for example, a water-soluble PQQGDH derived from Acinetobacter calcoaceticus. The cytochrome is, for example, an electron transfer domain of quinohemoprotein ethanol dehydrogenase from Comamonas testosteroni. The fusion protein of the present invention shows intramolecular electron transfer from PQQ, a redox center, to the cytochrome, which allow construction of a direct electron transfer-type glucose sensor which requires no electron mediators.

    摘要翻译: 公开了吡咯并喹啉醌葡萄糖脱氢酶(PQQGDH)和细胞色素的融合蛋白。 例如,PQQGDH是来源于不动杆菌属醋酸钙的水溶性PQQGDH。 细胞色素是例如来自Comamonas testosteroni的喹喔啉乙醇脱氢酶的电子转移结构域。 本发明的融合蛋白显示了从PQQ(氧化还原中心)到细胞色素的分子内电子转移,其允许构建不需要电子介体的直接电子转移型葡萄糖传感器。