内切蛋白酶GluC(V8蛋白酶)是金黄色葡萄球菌在体内释放的许多毒力因子之一。V8蛋白酶能够水解某些丝氨酸蛋白酶抑制剂和所有种类的哺乳动物免疫球蛋白。V8蛋白酶的特异性和有效抑制剂的应用可能导致新的抗菌剂的开发。在本文中,我们介绍了膦谷氨酸类似物的新型肽基衍生物的合成和抑制性能。化合物Boc-Phe-Leu-Glu P(OC 6 H 4)2之一显示出明显的二阶抑制率值为8540 M -1 s -1。Boc-Phe-Leu-Glu P(OC 6具有最高抑制能力的H 4)2化合物具有在体外预防V8介导的人IgG蛋白水解的能力。
Synthesis and proteinase inhibitory properties of diphenyl phosphonate analogues of aspartic and glutamic acids
作者:Robert Hamilton、Brian Walker、Brian J. Walker
DOI:10.1016/s0960-894x(98)00272-8
日期:1998.7
The synthesis of diphenyl phosphonate analogues of aspartic and glutamic acid, and their inhibitory activity against S. aureus V8 protease and granzyme B, is described. The study has revealed difficulties with protecting group compatibility in the synthesis of these analogues. Two analogues, Acetyl. AspP (OPh)2 and Acetyl.GluP (OPh)2 were found to function as irreversible inactivators of V8 proteinase
Towards the identification of unknown neuropeptide precursor-processing enzymes: Design and synthesis of a new family of dipeptidyl phosphonate activity probes for substrate-based protease identification
作者:Eduard Sabidó、Teresa Tarragó、Ernest Giralt
DOI:10.1016/j.bmc.2010.09.066
日期:2010.12
Specific proteolytic processing of inactive precursors is an exquisite cellular mechanism that triggers the activation of numerous physiologic peptides and proteins. This process ensures the generation of biologically active peptides, such as many neuropeptides and peptide hormones, in the appropriate cellular compartments at the right time, and its failure leads to several pathological conditions. Identification of the proteases involved in this limited proteolysis is, therefore, an essential step for the subsequent establishment of new therapeutic targets. As a first effort along this line, we synthesized eight new dipeptidyl phosphonate activity-based probes and used them to explore the soluble proteome from mouse brain and pituitary gland for substrate-based protease identification both by in-gel analysis and mass spectrometry. (C) 2010 Elsevier Ltd. All rights reserved.