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Virologica Sinica, 18 (1) : 1-4, 2003
HCV E2 Prodaryotic system Gene expression Purification
1.Wuhan Institute of Virology,Academia Sinica,Wuhan 430071,.China
2.Department ofHepatitis,National Institute for the Control ofPharmaceutical and Biology Products,Beijing 100050,China
3.Military Medical Academia Sinica, Beijing 100850,China
Rceomdinant plasmid pET-E2 was transformed into BL21 (DE3) competent cell, then induced the amplified culture with IPTG. There was a 34 kDa band in SDS-PAGE gel. The molecular weight of the expressed protein was comsistent to that of deduced E2 protein. Tested by western-blot, It showed that the product was HCV E2 protein. It contained a six-Histidine tag and aggregated into the inclusion body. Computer scan analysis showed the protein interested took the percentage more than 36 of the total bacterial proteins and the rate of purification was higher than 95% after purified by Ni-column. The activity of pruified E2 protein was tested by ELISA. The result showed that the 5/15 HCVpositive sera had anti-E2 antibody, and the other 5 negative HCV sera hadn’t anti-E2 antibody
  Published online: 2 Feb 2003
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