Abstract:
:Human CD81 has been previously identified as the putative receptor for the hepatitis C virus envelope glycoprotein E2. The large extracellular loop (LEL) of human CD81 differs in four amino acid residues from that of the African green monkey (AGM), which does not bind E2. We mutated each of the four positions in human CD81 to the corresponding AGM residues and expressed them as soluble fusion LEL proteins in bacteria or as complete membrane proteins in mammalian cells. We found human amino acid 186 to be critical for the interaction with the viral envelope glycoprotein. This residue was also important for binding of certain anti-CD81 monoclonal antibodies. Mutating residues 188 and 196 did not affect E2 or antibody binding. Interestingly, mutation of residue 163 increased both E2 and antibody binding, suggesting that this amino acid contributes to the tertiary structure of CD81 and its ligand-binding ability. These observations have implications for the design of soluble high-affinity molecules that could target the CD81-E2 interaction site(s).
journal_name
J Viroljournal_title
Journal of virologyauthors
Higginbottom A,Quinn ER,Kuo CC,Flint M,Wilson LH,Bianchi E,Nicosia A,Monk PN,McKeating JA,Levy Sdoi
10.1128/jvi.74.8.3642-3649.2000subject
Has Abstractpub_date
2000-04-01 00:00:00pages
3642-9issue
8eissn
0022-538Xissn
1098-5514journal_volume
74pub_type
杂志文章abstract::Meq is the major Marek's disease virus (MDV)-encoded oncoprotein and is essential for T-cell lymphomagenesis. Meq and several noncoding RNAs, including three microRNA (MiR) clusters, are expressed from the repeats of the MDV genome during latent infection of T cells. To investigate the state of the chromatin in this a...
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journal_title:Journal of virology
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journal_title:Journal of virology
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:1988-02-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.45.3.1147-1149.1983
更新日期:1983-03-01 00:00:00
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doi:10.1128/JVI.68.2.1103-1114.1994
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更新日期:2015-06-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.25.2.687-692.1978
更新日期:1978-02-01 00:00:00
abstract:UNLABELLED:The disease mechanisms associated with onset and secondary effects of rotavirus (RV) diarrhea remain to be determined and may not be identical. In this study, we investigated whether onset of RV diarrhea is associated with increased intestinal permeability and/or motility. To study the transit time, fluoresc...
journal_title:Journal of virology
pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
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更新日期:2010-10-01 00:00:00