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Molecular cloning, expression, purification, and mass spectrometric characterization of 3C-like protease of SARS coronavirus

Identifieur interne : 006418 ( Main/Merge ); précédent : 006417; suivant : 006419

Molecular cloning, expression, purification, and mass spectrometric characterization of 3C-like protease of SARS coronavirus

Auteurs : Haifang Sun [République populaire de Chine] ; Haibin Luo [République populaire de Chine] ; Changying Yu [République populaire de Chine] ; Tao Sun [République populaire de Chine] ; Jing Chen [République populaire de Chine] ; Shuying Peng [République populaire de Chine] ; Jun Qin [République populaire de Chine] ; Jianhua Shen [République populaire de Chine] ; Yiming Yang [République populaire de Chine] ; Youhua Xie [République populaire de Chine] ; Kaixian Chen [République populaire de Chine] ; Yuan Wang [République populaire de Chine] ; Xu Shen [République populaire de Chine] ; Hualiang Jiang [République populaire de Chine]

Source :

RBID : PMC:7129208

Abstract

Severe acute respiratory syndrome (SARS) is an acute respiratory illness, which has broken out in China. It has been known that SARS coronavirus (SARS_CoV) is a novel human coronavirus and is responsible for SARS infection. Belonging to one of the major proteins associated with SARS_CoV, SARS 3C-like protease (SARS_3CLpro) functions as a cysteine protease engaging in the proteolytic cleavage of the viral precursor polyprotein to a series of functional proteins required for coronavirus replication and is considered as an appealing target for designing anti-SARS agents. To facilitate the studies regarding the functions and structures of SARS_3CLpro, in this report the synthetic genes encoding 3CLpro of SARS_CoV were assembled, and the plasmid was constructed using pQE30 as vector and expressed in Escherichia coli M15 cells. The highly yielded (∼15 mg/L) expressed protease was purified by use of NTA-Ni2+ affinity chromatography and FPLC system, and its sequence was determined by LC/MS with the residue coverage of 46.4%.


Url:
DOI: 10.1016/j.pep.2003.08.016
PubMed: 14965777
PubMed Central: 7129208

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PMC:7129208

Le document en format XML

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<name sortKey="Peng, Shuying" sort="Peng, Shuying" uniqKey="Peng S" first="Shuying" last="Peng">Shuying Peng</name>
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<name sortKey="Qin, Jun" sort="Qin, Jun" uniqKey="Qin J" first="Jun" last="Qin">Jun Qin</name>
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<name sortKey="Xie, Youhua" sort="Xie, Youhua" uniqKey="Xie Y" first="Youhua" last="Xie">Youhua Xie</name>
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<name sortKey="Wang, Yuan" sort="Wang, Yuan" uniqKey="Wang Y" first="Yuan" last="Wang">Yuan Wang</name>
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<name sortKey="Shen, Xu" sort="Shen, Xu" uniqKey="Shen X" first="Xu" last="Shen">Xu Shen</name>
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</affiliation>
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<name sortKey="Jiang, Hualiang" sort="Jiang, Hualiang" uniqKey="Jiang H" first="Hualiang" last="Jiang">Hualiang Jiang</name>
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<series>
<title level="j">Protein Expression and Purification</title>
<idno type="ISSN">1046-5928</idno>
<idno type="eISSN">1096-0279</idno>
<imprint>
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<div type="abstract" xml:lang="en">
<p>Severe acute respiratory syndrome (SARS) is an acute respiratory illness, which has broken out in China. It has been known that SARS coronavirus (SARS_CoV) is a novel human coronavirus and is responsible for SARS infection. Belonging to one of the major proteins associated with SARS_CoV, SARS 3C-like protease (SARS_3CL
<sup>pro</sup>
) functions as a cysteine protease engaging in the proteolytic cleavage of the viral precursor polyprotein to a series of functional proteins required for coronavirus replication and is considered as an appealing target for designing anti-SARS agents. To facilitate the studies regarding the functions and structures of SARS_3CL
<sup>pro</sup>
, in this report the synthetic genes encoding 3CL
<sup>pro</sup>
of SARS_CoV were assembled, and the plasmid was constructed using pQE30 as vector and expressed in
<italic>Escherichia coli</italic>
M15 cells. The highly yielded (∼15 mg/L) expressed protease was purified by use of NTA-Ni
<sup>2+</sup>
affinity chromatography and FPLC system, and its sequence was determined by LC/MS with the residue coverage of 46.4%.</p>
</div>
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