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Expression and Purification of Nucleocaspid and Envelope Proteins of SARS Coronavirus

何涛, 胡志红, 方明刚, 王华林, 杨继红, 王汉中

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Abstract

Genes encoding nucleocapsid (N) and envelope (E) proteins of SARS coronavirus (SARS-CoV) were obtained by RT-PCR and were cloned into the expression vector pGEX-KG. The genes were expressed in E. coli and the recombinant proteins were in a soluble form. The proteins were purified by affinity chromatography. The recombinant N protein reacted specifically with anti-SARS antibody. The results may provide a good tool for further research of immune responses and early diagnosis of SARS virus.

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What this paper is about

Genes encoding nucleocapsid (N) and envelope (E) proteins of SARS coronavirus (SARS-CoV) were obtained by RT-PCR and were cloned into the expression vector pGEX-KG. The genes were expressed in E. coli and the recombinant proteins were in a soluble form. The proteins were purified by affinity chromatography. The recombinant N protein reacted specifically with anti-SARS antibody. The results may provide a good tool for further research of immune responses and early diagnosis of SARS virus.

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Available abstract

Genes encoding nucleocapsid (N) and envelope (E) proteins of SARS coronavirus (SARS-CoV) were obtained by RT-PCR and were cloned into the expression vector pGEX-KG. The genes were expressed in E. coli and the recombinant proteins were in a soluble form. The proteins were purified by affinity chromatography. The recombinant N protein reacted specifically with anti-SARS antibody. The results may provide a good tool for further research of immune responses and early diagnosis of SARS virus.

Key concepts: Recombinant DNA, Coronavirus, Affinity chromatography, Gene, Biology, Virology, Severe acute respiratory syndrome coronavirus, Molecular biology

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