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  • Title: [Studies on mimotopes of hepatitis C virus E1 protein].
    Author: Cao F, Shi X, Du Y, Hou L, Ji Y, Wang H.
    Journal: Zhonghua Gan Zang Bing Za Zhi; 2001 Aug; 9(4):223-5. PubMed ID: 11602054.
    Abstract:
    OBJECTIVE: To study the B-cell epitope of E1 protein of hepatitis C virus. METHODS: By induction of IPTG, the E.coli M15 strains harboring the pQE30-HCVe118 expressed truncated C-terminal HCV E1 protein (Pte1). The proteins were purified with preparative electrophoreses system, which captured anti-E1 IgG in HCV (+) sera. By applying the antibodies as selective molecular 12 mers random peptide libraries were panned, and positive clones were obtained by ELISA. Amino acid sequences of display peptide were compared with that of HCV E1 protein. RESULTS: The purified HCV E1 proteins could react specifically with partly anti-HCV sera by ELISA. Among 10 phage display peptides, 6, 6, 2 were the most homologous to HCV E1 protein at position 320-336aa, 251-263aa, 225-248, respectively. CONCLUSIONS: There exist multiple B-cell epitopes in HCV E1 protein. At least one preponderant epitope is mapped at residues 320-336 of HCV E1 protein.
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