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    • 2. 发明授权
    • Substrate for determining leucine aminopeptidase or
gamma-glutamyltranspeptase activity
    • 用于测定亮氨酸氨基肽酶或γ-谷氨酰转肽酶活性的底物
    • US4877727A
    • 1989-10-31
    • US248347
    • 1988-09-20
    • Akira MiikeYukio KatsumataToshio Tatano
    • Akira MiikeYukio KatsumataToshio Tatano
    • C12Q1/37C12Q1/48
    • C12Q1/48C12Q1/37C12Q2337/10
    • Leucine aminopeptidase (LAP) activity or .gamma.-glutamyltranspeptidase (.gamma.-GTP) activity in a sample is determined by converting a substrate represented by the formula (I): ##STR1## wherein Z represents (CH.sub.3).sub.2 CHCH.sub.2 CH(NH.sub.2)--or (NH.sub.2)(COOH) CHCH.sub.2 CH.sub.2 --, R.sub.1 represents hydrogen, alkyl or substituted alkyl, R.sub.2 represents alkylene or hydroxyalkylene, R.sub.3 and R.sub.4 are the same or different and represents hydrogen, halogen, nitro, hydroxyl, sulfo, carboxyl, alkyl, and alkoxy, and salts thereof into a compound represented by the formula (II): ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 have the same meanings as defined above. The compound (II) is reacted with a chromogen to form a pigment or converted into a diazonium salt which is reacted with a coupling agent to form an azo dye. Absorption of a resultant colored reaction solution is measured.
    • 通过转化由式(I)表示的底物来确定样品中的亮氨酸氨基肽酶(LAP)活性或γ-谷氨酰转肽酶(γ-GTP)活性:其中Z表示(CH 3)2 CHCH 2 CH(NH 2) - 或(NH 2)(COOH)CHCH 2 CH 2 - ,R 1表示氢,烷基或取代的烷基,R 2表示亚烷基或羟基亚烷基,R 3和R 4相同或不同,表示氢,卤素,硝基,羟基,磺基,羧基,烷基和 (II)表示的化合物:其中R 1,R 2,R 3和R 4具有与上述相同的含义。 使化合物(II)与色原反应形成颜料或转化为重氮盐,其与偶联剂反应以形成偶氮染料。 测量所得有色反应溶液的吸收。