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Cloning of HCV E2 gene and expression and purification of HCV envelope glycoprotein E2
De-Wei Du, Zhan-Sheng Jia, Hong-Yan Qin, Qiu-Ping Liu, Yong-Xing Zhou, Hua Han
De-Wei Du, Zhan-Sheng Jia, Qiu-Ping Liu, Yong-Xing Zhou, Chinese PLA Center for Diagnosis and Treatment of Infectious Diseases, Tangdu Hospital, the Fourth Military Medical University, Xi'an 710038, Shaanxi Province, China
Hong-Yan Qin, Hua Han, Department of Medical Genetics and Developmental Biology, the Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
Supported by: the National Natural Science foundation of China, No. 30070687.
Correspondence to: Zhan-Sheng Jia, Department of Medical Genetics and Developmental Biology, the Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China. jiazsh@fmmu.edu.cn
Received: October 15, 2003 Revised: October 25, 2003 Accepted: November 19, 2003 Published online: February 15, 2004
AIM: To obtain large amount of HCV E2 protein, and to understand the function of the protein and to prepare the antibody against this protein.
METHODS: A 831bp of E2 gene fragment was amplified by PCR method from HCV genome and cloned into pET32a(+) vector, an E. coli expression vector, to construct a recombinant plasmid pET32a-HCVE2.The plasmid was transformed into E. coli BL-21 (DE3) to express E2 protein with IPTG induced. The protein E2 fused with HIS tag was purification by Ni-NTA resin column. The protein E2 fused with His tag was detected by SDS-PAGE electrophoresis and Western blot.
RESULTS: A novel protein with molecular weight of Mr 55 000 was expressed upon induction with IPTG in E. coli. The expressed product showed good reactivity to anti-His tag antibody and the HCV positive serum.
CONCLUSION: Cloning of HCV E2 gene and the expression and purification of envelope glycoprotein E2 lay a foundation of further study on HCV E2 protein and the receptors of hepatitis virus C.
Key Words: N/A
Citation: Du DW, Jia ZS, Qin HY, Liu QP, Zhou YX, Han H. Cloning of HCV E2 gene and expression and purification of HCV envelope glycoprotein E2. Shijie Huaren Xiaohua Zazhi 2004; 12(2): 315-318
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