Disulfide Bonds in Hepatitis C Virus Glycoprotein E1 Control the Assembly and Entry Functions of E2 Glycoprotein
نویسندگان
چکیده
منابع مشابه
Identification of Aptamer-Binding Sites in Hepatitis C Virus Envelope Glycoprotein E2
Hepatitis C Virus (HCV) encodes two envelope glycoproteins, E1 and E2. Our previous work selected a specific aptamer ZE2, which could bind to E2 with high affinity, with a great potential for developing new molecular probes as an early diagnostic reagents or therapeutic drugs targeting HCV. In this study, the binding sites between E2 and aptamer ZE2 were further explored. E2 was truncated to 15...
متن کاملThe Disulfide Bonds in Glycoprotein E2 of Hepatitis C Virus Reveal the Tertiary Organization of the Molecule
Hepatitis C virus (HCV), a major cause of chronic liver disease in humans, is the focus of intense research efforts worldwide. Yet structural data on the viral envelope glycoproteins E1 and E2 are scarce, in spite of their essential role in the viral life cycle. To obtain more information, we developed an efficient production system of recombinant E2 ectodomain (E2e), truncated immediately upst...
متن کاملThe variable regions of hepatitis C virus glycoprotein E2 have an essential structural role in glycoprotein assembly and virion infectivity.
The three variable regions of hepatitis C virus (HCV) glycoprotein E2 can be removed simultaneously from the E2 ectodomain (residues 384-661) without affecting folding or CD81 binding. In this study, we show that deletion of hypervariable region (HVR) 2 or the intergenotypic variable region (igVR) in the context of the E1E2 polyprotein eliminates formation of heterodimers, reduces CD81 binding ...
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The identification of a specific immunogenic candidate that will effectively activate the appropriate pathway for neutralizing antibody production is fundamental for vaccine design. By using a monoclonal antibody (1H8) that neutralizes HCV in vitro, we have demonstrated here that 1H8 recognized an epitope mapped between residues A524 and W529 of the E2 protein. We also found that the epitope re...
متن کاملHepatitis C virus envelope glycoprotein E2 glycans modulate entry, CD81 binding, and neutralization.
Hepatitis C virus (HCV) is a major human pathogen that causes serious liver disease, including cirrhosis and hepatocellular carcinoma. The primary target cells of HCV are hepatocytes, and entry is restricted by interactions of the envelope glycoproteins, E1 and E2, with cellular receptors. E1 and E2 form noncovalently linked heterodimers and are heavily glycosylated. Glycans contribute to prote...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 2012
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.02659-12