The present invention relates to a method and tools which allow the kinetic monitoring of hydrolase enzyme activity. The present invention also aims to provide synthetic peptides and peptide residues modified such that they can be used in assays for monitoring hydrolase enzyme activity, and preferably phosphatase activity. Also claimed are modified tyrosine amino acid derivatives of formula (IV), wherein Y is chosen from -POy2- with y equal to 2 or 3 and esters thereof, -SOZ- with z equal to 2 or 3 and esters thereof, a carbohydrate or carbohydrate derivatives; and; wherein X1 and/or X2 is selected from -N3, -NO2, -CI, or -CN, -SCN, a C1 to C8 alkyl, or H, wherein either X1 or X2 is not H.
本发明涉及一种方法和工具,允许对
水解酶酶活性进行动力学监测。本发明还旨在提供合成肽和肽残基的修饰,使其可用于监测
水解酶酶活性,尤其是
磷酸酶活性的测定。还声明了公式(IV)中的修饰
酪氨酸氨基酸衍
生物,其中Y选择自-POy2-,其中y等于2或3及其酯,-SOZ-,其中z等于2或3及其酯,一种
碳水化合物或
碳水化合物衍
生物;以及;其中X1和/或X2选自-N3,-
NO2,-CI,或-CN,-SCN,C1到C8烷基,或H,其中X1或X2中的任一者不是H。