申请人:Saint Louis University
公开号:US20010047078A1
公开(公告)日:2001-11-29
Methods are provided for detecting methionine aminopeptidase (MAP) activity and for detecting inhibitors of MAP. The methods utilize a peptide comprising an N-terminal methionine which can be cleaved from the peptide by MAP, and a C-terminal detection moiety which is released by a second peptidase only if the N-terminal methionine has been cleaved from the peptide. When the peptide is combined with MAP and the second peptidase, the detection moiety is released, while the addition of a MAP inhibitor will inhibit the release of the detection moiety. Reaction mixes, peptides, and kits which are useful for practicing the methods are also provided.
提供了检测蛋氨酸氨肽酶(MAP)活性和检测 MAP 抑制剂的方法。这些方法利用了一种多肽,该多肽包含一个 N 端蛋氨酸和一个 C 端检测分子,前者可被 MAP 从多肽中裂解,后者只有在 N 端蛋氨酸从多肽中裂解后才会被第二肽酶释放。当肽与 MAP 和第二肽酶结合时,检测分子被释放,而添加 MAP 抑制剂将抑制检测分子的释放。此外,还提供了有助于实施上述方法的反应混合物、多肽和试剂盒。