Characterization of antigenic determinants in the core antigen of the hepatitis C virus

Antibodies to the hepatitis C virus (HCV) core protein are present in the majority of patients with chronic HCV infection. To characterize the corresponding determinants, synthetic peptides and various deletion clones of the core gene expressed in Escherichia coli were used to test human anti-core p...

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Hauptverfasser: Goeser, Tobias (VerfasserIn) , Müller, Hubert M. (VerfasserIn) , Ye, Jin (VerfasserIn) , Pfaff, Eberhard (VerfasserIn) , Theilmann, Lorenz (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: December 1994
In: Virology
Year: 1994, Jahrgang: 205, Heft: 2, Pages: 462-469
ISSN:1096-0341
DOI:10.1006/viro.1994.1666
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1006/viro.1994.1666
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0042682284716667
Volltext
Verfasserangaben:Tobias Goeser, Hubert M. Müller, Jin Ye, Eberhard Pfaff, Lorenz Theilmann

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520 |a Antibodies to the hepatitis C virus (HCV) core protein are present in the majority of patients with chronic HCV infection. To characterize the corresponding determinants, synthetic peptides and various deletion clones of the core gene expressed in Escherichia coli were used to test human anti-core positive sera or rabbit anti-peptide antibodies in enzyme-linked immunosorbent assays, immunoblots, and competition assays. Two distinct linear antigenic determinants which are located within aa 1 to 20 and between aa 30 and 47 were found. Further studies using reactive serum after preabsorption of antibodies with N- and C-terminal-deleted HCV core proteins or with peptides directed to the linear epitopes revealed an additional determinant that requires for presentation the participation of the N-terminal 69 amino acids. It is postulated that the HCV core protein forms a three-dimensional structure exposing two linear epitopes and, in addition, presents a conformational determinant within the N-terminal 69 amino acids. The remaining core amino acid sequence spanning from position 69 to 191 does not seem to expose further determinants to induce additional anti-core antibodies. 
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