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학술저널
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대한바이러스학회 JOURNAL OF BACTERIOLOGY AND VIROLOGY 大韓바이러스學會誌 제23권 제2호
발행연도
1993.12
수록면
193 - 202 (10page)

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Hepatitis C virus(HCV) is the major causative agent of post transfusion non-A, non-B hepatitis which is often liver disease and developed into the malignant disease such as liver cirrhosis and hepato cellular carcinoma. To find out antigenic proteolytic enzyrne of HCV, an experiment to express proteinase of HCV was carried out by PCR using isolated DNA from sera of HCV carriers. And the nucleotide and deduced amino acid sequence of noncoding and core region of HCV were also analyzed by DNA star software. The nucleotide and deduced arnino acid sequence of noncoding and core region of HCV genome isolated in Korea showed a sequence homology at the nucleotide level of about 67.5% with the Japanese HCV prototype, and about 63.5% homology with the American HCV prototype. It implicated that the Korean isolates of HCV were more closely related to the Japanese HCV. Viral serine-like proteinase DNA was isolated and expressed in E. coli KM-392 strain and two expressed proteins, 15-22KDa and 25-32 Kda, were reactive to monoclonal anti- body against HCV and to sera of hepatitis C patient by immunoblotting analysis. This result indicates that 15-22KDa and 25-32 Kda serine-like proteinase of HCV expressed in E. coli could be used as an serodiagnostic antigen for anti-HCV and immunogens for HCV vaccine.

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