Polyprotein cleavage mechanism of SARS CoV Mpro and chemical modification of the octapeptide.
Polyprotein cleavage mechanism of SARS CoV Mpro and chemical modification of the octapeptide.
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DOI:
10.1016/j.peptides.2004.06.018
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发表时间:
2004-11
期刊:
影响因子:
3
通讯作者:
Chou KC
中科院分区:
文献类型:
--
作者:
Du QS;Wang SQ;Zhu Y;Wei DQ;Guo H;Sirois S;Chou KC
The cleavage mechanism of severe acute respiratory syndrome (SARS) coronavirus main proteinase (Mpro or 3CLpro) for the octapeptide AVLQSGFR is studied using molecular mechanics (MM) and quantum mechanics (QM). The catalytic dyad His-41 and Cys-145 in the active pocket between domain I and II seem to polarize the π-electron density of the peptide bond between Gln and Ser in the octapeptide, leading to an increase of positive charge on C(CO) of Gln and negative charge on N(NH) of Ser. The possibility of enhancing the chemical bond between Gln and Ser based on the “distorted key” theory [Anal. Biochem. 233 (1996) 1] is examined. The scissile peptide bond between Gln and Ser is found to be solidified through “hybrid peptide bond” by changing the carbonyl group CO of Gln to CH2 or CF2. This leads to a break of the π-bond system for the peptide bond, making the octapeptide (AVLQSGFR) a “distorted key” and a potential starting system for the design of anti SARS drugs.
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影响因子:
64.5
作者:
Chou, JJ;Matsuo, H;Wagner, G
通讯作者:
Wagner, G
影响因子:
56.9
作者:
Anand, K;Ziebuhr, J;Hilgenfeld, R
通讯作者:
Hilgenfeld, R
DOI:
10.1007/bf01028191
发表时间:
1993-06-01
期刊:
JOURNAL OF PROTEIN CHEMISTRY
影响因子:
--
作者:
CHOU, JJ
通讯作者:
CHOU, JJ
影响因子:
5.8
作者:
ALTHAUS, IW;CHOU, JJ;REUSSER, F
通讯作者:
REUSSER, F
DOI:
10.1006/bbrc.2002.6686
发表时间:
2002-04-05
影响因子:
3.1
作者:
Chou, KC;Howe, WJ
通讯作者:
Howe, WJ