Characterization and Optimization of Selective, Nonpeptidic Inhibitors of Cathepsin S with an Unprecedented Binding Mode
作者:Hiroaki Inagaki、Hiroyuki Tsuruoka、Michael Hornsby、Scott A. Lesley、Glen Spraggon、Jonathan A. Ellman
DOI:10.1021/jm070111+
日期:2007.5.1
the development of enzyme inhibitors, was previously applied to cathepsin S to obtain a novel (2-arylphenoxy)acetaldehyde inhibitor, 2, with a 0.49 microM Ki value (Wood, W. J. L.; Patterson, A. W.; Tsuruoka, H.; Jain, R. K.; Ellman, J. A. J. Am. Chem. Soc. 2005, 127, 15521-15527). In this paper we disclose the X-ray structure of a complex between cathepsin S and inhibitor 2 which reveals an unprecedented
底物活性筛选(SAS)方法(一种基于底物的片段鉴定和酶抑制剂开发的优化方法)先前已应用于组织蛋白酶S,以获得新型(2-芳基苯氧基)乙醛抑制剂2,具有0.49 microM Ki (Wood,WJL; Patterson,AW; Truruoka,H; Jain,RK; Ellman,JAJ Am.Chem.Soc.2005,127,15521-15527)。在本文中,我们公开了组织蛋白酶S和抑制剂2之间的复合物的X射线结构,揭示了前所未有的结合模式。基于该结构,设计了具有大大提高的裂解效率的另外的2-联芳氧基底物。将优化的底物转化为相应的醛类抑制剂可得到低分子量(304道尔顿)和有效(9.6 nM)的组织蛋白酶S抑制剂,从100-