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• W2176771373 endingPage "1479" @default.
• W2176771373 startingPage "1473" @default.
• W2176771373 abstract "The V3 hypervariable region of HIV-1 surface protein has been identified as a major determinant for viral tropism and coreceptor usage. However, the role of the highly conserved N-linked glycan at the V3 loop remains controversial. To further examine its role in viral infection, we introduced a conservative amino acid substitution (asparagine to glutamine) in the V3-proximal glycosylation motif (Asn-X-Ser/Thr) in the surface glycoprotein of a CXCR4-using virus (BRU), a CCR5-using virus (SF162), and a dual-tropic virus (89.6). The effect of the mutation was determined by complementation assays, and by infectivity on CEMx174 and U373-MAGI cells expressing either CXCR4 or CCR5. The mutation resulted in decreased CXCR4 usage by SHIV89.6, but increased usage by BRU. Similarly, it abrogated CCR5 usage by SHIV89.6, but had no effect on SF162. This effect was not dependent on the specific amino acid substitution used, because a threonine-toalanine mutation in the same motif in 89.6 Env yielded identical results as the asparagine-to-glutamine mutation. These findings support the notion that multiple factors, including glycosylation at V3, contribute to coreceptor usage and that the particular effects exerted by the N-linked glycan itself appear to be isolate dependent." @default.
• W2176771373 created "2016-06-24" @default.
• W2176771373 creator A5032020402 @default.
• W2176771373 creator A5055711908 @default.
• W2176771373 creator A5074041780 @default.
• W2176771373 date "2001-11-01" @default.
• W2176771373 modified "2023-10-16" @default.
• W2176771373 title "<i>Short Communication:</i>N-Linked Glycosylation in the V3 Region of HIV Type 1 Surface Antigen Modulates Coreceptor Usage in Viral Infection" @default.
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• W2176771373 doi "https://doi.org/10.1089/08892220152644179" @default.
• W2176771373 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/11709091" @default.
• W2176771373 hasPublicationYear "2001" @default.
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