Synthesis of peptide chloromethyl ketones and examination of their inhibitory effects on human spleen fibrinolytic proteinase(SFP) and human leukocyte elastase(LE).
作者:YUKO TSUDA、YOSHIO OKADA、YOKO NAGAMATSU、UTAKO OKAMOTO
DOI:10.1248/cpb.35.3576
日期:——
Various substrate-derived chloromethyl ketones were synthesized by a conventional method for the purpose of obtaining specific and potent irreversible inhibitors for human spleen fibrinolytic proteinase (SFP) and human leukocyte elastase (LE) in order to compare the properties of SFP with those of LE. It was found that Boc-Ala-Tyr-Leu-Val-CH2Cl among the peptide chloromethyl ketones exhibited the most effective and specific inhibition of SFP and LE. The two enzymes were inhibited by peptide chloromethyl ketones having a Val residue at the C-terminus in a similar manner, demonstrating a similarity between SFP and LE.
为了比较人脾纤溶酶(SFP)和人白细胞弹力酶(LE)的性质,通过传统方法合成了多种来自底物的氯甲基酮,旨在获得对这两种酶具有特异性和强效的不可逆抑制剂。在各种肽氯甲基酮中,发现Boc-Ala-Tyr-Leu-Val-CH2Cl对SFP和LE表现出最有效和特异的抑制作用。这两种酶都被C-末端具有Val残基的肽氯甲基酮以类似方式抑制,这表明SFP和LE之间存在相似性。