High Level Expression of Grass Carp Reovirus VP7 Protein in Prokaryotic Cells

查看全文 作　　者：Lan-lan [1,2]ZHANG;Jin-yu [3]SHEN;Cheng-feng [1]LEI;Xiao-ming [4]LI;Qin [1]FANG

机构地区：[1]State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071,China;[2]Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;[3]Zhejiang Institute of Freshwater Fisheries, Huzhou,313001;[4]Basic Medical School, Wuhan University, Wuhan 430072, China

出　　处：《Virologica Sinica》索引2008年第23卷第1期,共6页

基　　金：National Natural Science Foundation ofChina (Grant Nos 30470074, 30671615);Innovation Projectof the Chinese Academy of Sciences (KSCX2- YW-N- 021);Science and technology foundation of Zhejiang Province(2007C22052) 摘　　要：Sequences analysis revealed Grass carp reovirus (GCRV) s10 was 909 nucleotides coding a 34 kDa protein denoted as VP7, which was determined to be a viral outer capsid protein (OCP). To obtain expressed OCP in vitro, a full length VP7 gene was produced by RT-PCR amplification, and the amplified fragment was cloned into T7 promoted prokaryotic expression vector pRSET. The recombinant plasmid,which was named as pR/GCRV-VP7,was then transformed into E.coli BL21 host cells. The data indicated that the expressed recombinant was in frame with the N-terminal fusion peptide. The over-expressed fusion protein was produced by inducing with IPTG, and its molecular weight was about 37kDa, which was consistent with its predicted size. In addition, the fusion protein was produced in the form of the inclusion body with their yield remaining steady at more than 60% of total bacterial protein. Moreover,the expressed protein was able to bind immunologically to anti-his-tag monoclonal antibody (mouse) and anti-GCRV serum (rabbit). This work provides a research basis for further structure and function studies of GCRV during entry into cells. 关键词：草鱼呼肠孤病毒 VP7蛋白原核细胞基因表达

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High Level Expression of Grass Carp Reovirus VP7 Protein in Prokaryotic Cells

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