Expression, purification, and characterization of SARS coronavirus RNA polymerase.
Expression, purification, and characterization of SARS coronavirus RNA polymerase.
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DOI:
10.1016/j.virol.2005.02.017
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发表时间:
2005-05-10
期刊:
影响因子:
3.7
通讯作者:
Ding J
中科院分区:
文献类型:
--
作者:
Cheng A;Zhang W;Xie Y;Jiang W;Arnold E;Sarafianos SG;Ding J
The RNA-dependent RNA polymerase (RdRp) of SARS coronavirus (SARS-CoV) is essential for viral replication and a potential target for anti-SARS drugs. We report here the cloning, expression, and purification of the N-terminal GST-fused SARS-CoV RdRp and its polymerase catalytic domain in Escherichia coli. During purification, the full-length GST-RdRp was found to cleave into three main fragments: an N-terminal p12 fragment, a middle p30 fragment, and a C-terminal p64 fragment comprising the catalytic domain, presumably due to bacterial proteases. Biochemical assays show that the full-length GST-RdRp has RdRp activity and the p64 and p12 fragments form a complex that exhibits comparable RdRp activity, whereas the GST-p64 protein has no activity, suggesting that the p12 domain is required for polymerase activity possibly via involvement in template-primer binding. Nonnucleoside HIV-1 RT inhibitors are shown to have no evident inhibitory effect on SARS-CoV RdRp activity. This work provides a basis for biochemical and structural studies of SARS-CoV RdRp and for development of anti-SARS drugs.
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DOI:
10.1016/s0140-6736(03)13077-2
发表时间:
2003-04-19
期刊:
Lancet (London, England)
影响因子:
--
作者:
Peiris JS;Lai ST;Poon LL;Guan Y;Yam LY;Lim W;Nicholls J;Yee WK;Yan WW;Cheung MT;Cheng VC;Chan KH;Tsang DN;Yung RW;Ng TK;Yuen KY;SARS study group
通讯作者:
SARS study group
影响因子:
5.4
作者:
Gosert, R;Kanjanahaluethai, A;Baker, SC
通讯作者:
Baker, SC
影响因子:
5.4
作者:
Harcourt, BH;Jukneliene, D;Baker, SC
通讯作者:
Baker, SC
影响因子:
5.4
作者:
Bost, AG;Carnahan, RH;Denison, MR
通讯作者:
Denison, MR
DOI:
10.1038/nsb0495-303
发表时间:
1995-04-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
ESNOUF, R;REN, JS;STUART, D
通讯作者:
STUART, D