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    • 7. 发明公开
    • Method for determination of protein modifying or demodifying activity and suitable materials therefor
    • 用于确定蛋白质修饰或-demodifizierenden活性和开发适合材料的方法
    • EP1557474A1
    • 2005-07-27
    • EP04075185.1
    • 2004-01-21
    • Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
    • Verheijen, Johan HendrikusHanemaaijer, Jan Roeland Occo
    • C12Q1/37G01N33/573G01N33/58G01N33/68
    • G01N33/58C12Q1/37G01N33/573G01N33/581G01N33/68
    • Method for determining protein modifying activity or protein demodifying activity in a sample by providing a detection enzyme construct comprising at least one site of modification and at least one site of activation or inactivation, wherein activation or inactivation of the detection enzyme construct results from cleavage of the site of activation or inactivation by a protease, wherein the site of modification of the detection enzyme construct is capable of being modified by the protein modifying activity to be determined or demodified by the protein demodifying activity to be determined, and wherein modification or demodification of the site of modification affects cleavage of the site of activation or inactivation by the protease, contacting the sample with the detection enzyme construct under suitable conditions for the protein modifying or demodifying activity to be determined, contacting the detection enzyme construct with the protease under suitable conditions for activity of the protease, and determining the occurrence or level of detection enzyme activity. Active detection enzyme may be detectable by its conversion of a substrate of the detection enzyme to a reaction product. The detection enzyme construct may be derived from a protease (pro-)enzyme, like pro-urokinase or pro-caspase, and may comprise artificial modification site, activation cleavage site, and/or inactivation cleavage site.
    • 对于方法确定性采矿蛋白质修饰通过从裂解提供检测酶构建体包含修饰中的至少一个位点和活化或失活中的至少一个位点,worin检测酶的活化或失活构建体的结果的样品中的酶活性或蛋白质demodifying活性 通过蛋白酶,worin检测酶构建体的修饰位点能够通过将蛋白质修饰活性的被修改为可确定性开采或通过蛋白质demodifying活性demodified是确定性的开采激活或失活的位点,和worin修改或的demodification 修饰的位点被蛋白酶影响激活或失活的部位的裂解,接触与检测酶样品对蛋白质修饰或demodifying活性合适的条件下构造为确定性的开采,接触检测酶与合适的条件下蛋白酶构建 日活动 È蛋白酶和确定性采矿的发生或检测酶活性的水平。 活性检测的酶可以是通过其转化的酶检测反应产物的底物的可检测的。 检测酶构建体可以选自蛋白酶(PRO)酶衍生,像前尿激酶或促胱天蛋白酶,并且可以包括人工修饰位点,激活切割位点,和/或失活的切割位点。