Characterization of SARS-CoV main protease and identification of biologically active small molecule inhibitors using a continuous fluorescence-based assay

被引:50
作者
Kao, RY [1 ]
To, APC [1 ]
Ng, LWY [1 ]
Tsui, WHW [1 ]
Lee, TSW [1 ]
Tsoi, HW [1 ]
Yuen, KY [1 ]
机构
[1] Univ Hong Kong, Dept Microbiol, Hong Kong, Hong Kong, Peoples R China
关键词
severe acute respiratory syndrome; Coronavirus; 3C-like protease; main protease; fluorogenic substrate; small molecule inhibitor;
D O I
10.1016/j.febslet.2004.09.026
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Severe acute respiratory syndrome associated coronavirus main protease (SARS-CoV M-pro) has been proposed as a prime target for anti-SARS drug development. We have cloned and overexpressed the SARS-CoV M-pro in Escherichia coli, and purified the recombinant M-pro to homogeneity. The kinetic parameters of the recombinant SARS-CoV M-pro were characterized by high performance liquid chromatography-based assay and continuous fluorescence-based assay. Two novel small molecule inhibitors of the SARS-CoV M-pro were identified by high-throughput screening using an internally quenched fluorogenic substrate. The identified inhibitors have K-i values at low muM range with comparable anti-SARS-CoV activity in cell-based assays. (C) 2004 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:325 / 330
页数:6
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