The addition of GB virus C (GBV-C) E2 protein to cells inhibits HIV replication in vitro, presumably triggered by interactions with a specific cellular receptor. Indirect evidence suggests that CD81 is the GBV-C E2 cellular receptor. We found that E2 binding to cells was not dependent upon human CD81, and that soluble CD81 did not compete with GBV-C E2 for cell binding. GBV-C E2 protein thus does not appear to interact with CD81.
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| http://dx.doi.org/10.1097/QAD.0b013e3280f77412 | DOI Listing |
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