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    • 8. 发明申请
    • POLYMERASE-IMMOBILIZED ELECTRODE
    • 聚合物固定电极
    • WO2007148809A1
    • 2007-12-27
    • PCT/JP2007/062646
    • 2007-06-18
    • CANON KABUSHIKI KAISHANOMOTO, TsuyoshiKUBO, Wataru
    • NOMOTO, TsuyoshiKUBO, Wataru
    • G01N27/416G01N27/327C12N15/09
    • G01N27/447C12Q1/6869C12Q2565/607
    • The present invention is to reduce a false signal in an apparatus for electrochemically decoding a base sequence of DNA, which false signal is caused by a phenomenon that even unreacted nucleotide 51- triphosphate derivatives remaining in the solution are electrochemically converted on an electrode. The present invention provides a polymerase-immobilized electrode that comprises an electroconductive substrate and a polymerase unit immobilized on the surface of the electroconductive substrate, wherein the polymerase unit comprises a polymerase part, an anchor part and an electroconductive part, which are linked in an order of the polymerase part, the anchor part and the electroconductive part, or in an order of the polymerase part, the electroconductive part and the anchor part; and the polymerase unit is immobilized on the electroconductive substrate by the anchor part; wherein a free end of the electroconductive part, not immobilized on the electroconductive substrate, is located in the vicinity of an active site of the polymerase part.
    • 本发明是为了减少用于对DNA的碱基序列进行电化学解码的装置中的假信号,该假信号是由残留在溶液中的未反应的核苷酸51-三磷酸衍生物在电极上进行电化学转化的现象引起的。 本发明提供了一种聚合酶固定化电极,其包含导电性基质和固定在导电性基质表面的聚合酶单元,其中聚合酶单元包含聚合酶部分,锚定部分和导电部分,其以顺序连接 聚合酶部分,锚定部分和导电部分,或按照聚合酶部分,导电部分和锚固部分的顺序; 并且聚合酶单元通过锚定部分固定在导电基底上; 其中未固定在导电性基材上的导电性部分的自由端位于聚合酶部分的活性部位附近。