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    • 24. 发明公开
    • An alpha-amylase assay method and reagent kit
    • Verfahren zur alpha-Amylasebestimmung und Reagenssatz。
    • EP0171960A1
    • 1986-02-19
    • EP85305355.1
    • 1985-07-26
    • GENZYME CORPORATION
    • Blair, Henry E.
    • C12Q1/40
    • C12Q1/40C12Q2334/10
    • An a-amylase assay method is described together with a reagent kit for use therein. An oligosaccharide substrate for a-amylase is provided. The substrate contains at least 3 glucose units. Its reducing-end glucose unit is bonded, via a bond cleavable by a- or β- glucosidase, to a label which exhibits an optically measurable change upon cleavage of the bond. Its terminal glucose unit is bonded to a blocking substituent which inhibits cleavage by exo-enzymes of the bond between the terminal glucose unit and the adjacent glucose unit. A liquid assay sample is contacted with the oligosaccharide substrate and with an exo-enzyme capable of cleaving the bond between the reducing-end glucose unit and the label. The optically measurable change is used as a measure of a-amylase in the sample.
    • 与用于其中的试剂盒一起描述α-淀粉酶测定方法。 提供了用于α-淀粉酶的寡糖底物。 底物含有至少3个葡萄糖单位。 其还原末端葡萄糖单元通过可被α或β-葡糖苷酶切割的键键合到标记,该标记在切割结合时表现出可光学测量的变化。 其末端葡萄糖单元与阻断取代基键合,其阻止末端葡萄糖单元和相邻葡萄糖单元之间的键的外切酶的切割。 液体测定样品与寡糖底物和能够切割还原端葡萄糖单元和标签之间的键的外切酶接触。 光学可测量的变化用作样品中α-淀粉酶的量度。