» Articles » PMID: 12163614

The Crown and Stem of the V3 Loop Play Distinct Roles in Human Immunodeficiency Virus Type 1 Envelope Glycoprotein Interactions with the CCR5 Coreceptor

Overview
Journal J Virol
Date 2002 Aug 7
PMID 12163614
Citations 128
Authors
Affiliations
Soon will be listed here.
Abstract

Human immunodeficiency virus type 1 envelope glycoprotein gp120 interacts with CD4 and the CCR5 coreceptor in order to mediate viral entry. A CD4-induced surface on gp120, primarily composed of residues in the V3 loop and the C4 domain, interacts with CCR5. In the present study, we generated envelope glycoproteins comprising chimeric V3 loops and/or V3 loops with deletions and studied their binding to CCR5 amino-terminal domain (Nt)-based sulfopeptides and cell surface CCR5, as well as their ability to mediate viral entry. We thus delineated two functionally distinct domains of the V3 loop, the V3 stem and the V3 crown. The V3 stem alone mediates soluble gp120 binding to the CCR5 Nt. In contrast, both the V3 stem and crown are required for soluble gp120 binding to cell surface CCR5. Within the context of a virion, however, the V3 crown alone determines coreceptor usage. Our data support a two-site gp120-CCR5 binding model wherein the V3 crown and stem interact with distinct regions of CCR5 in order to mediate viral entry.

Citing Articles

Convergent Evolution Dynamics of SARS-CoV-2 and HIV Surface Envelope Glycoproteins Driven by Host Cell Surface Receptors and Lipid Rafts: Lessons for the Future.

Fantini J, Chahinian H, Yahi N Int J Mol Sci. 2023; 24(3).

PMID: 36768244 PMC: 9915253. DOI: 10.3390/ijms24031923.


Net charge and position 22 of the V3 loop are associated with HIV-1 tropism in recently infected female sex workers in Nairobi, Kenya.

Abisi H, Otieno L, Irungu E, Onyambu F, Chepchirchir A, Anzala O Medicine (Baltimore). 2023; 101(49):e32024.

PMID: 36626483 PMC: 9750520. DOI: 10.1097/MD.0000000000032024.


Novel small synthetic HIV-1 V3 crown variants: CCR5 targeting ligands.

Anitha A, Narayanan P, Ajayakumar N, Sivakumar K, Kumar K J Biochem. 2022; 172(3):149-164.

PMID: 35708645 PMC: 9445593. DOI: 10.1093/jb/mvac052.


Discordance between HIV-1 Population in Plasma at Rebound after Structured Treatment Interruption and Archived Provirus Population in Peripheral Blood Mononuclear Cells.

Hendricks C, Cash M, Tagliamonte M, Riva A, Brander C, Llano A Microbiol Spectr. 2022; 10(4):e0135322.

PMID: 35699458 PMC: 9431602. DOI: 10.1128/spectrum.01353-22.


V3-Loop genotypes do not predict maraviroc susceptibility of CCR5-tropic virus or clinical response through week 48 in HIV-1-infected, treatment-experienced persons receiving optimized background regimens.

Lewis M, Simpson P, Mori J, Jubb B, Sullivan J, McFadyen L Antivir Chem Chemother. 2021; 29:20402066211030380.

PMID: 34343443 PMC: 8369958. DOI: 10.1177/20402066211030380.


References
1.
Binley J, Sanders R, CLAS B, Schuelke N, Master A, Guo Y . A recombinant human immunodeficiency virus type 1 envelope glycoprotein complex stabilized by an intermolecular disulfide bond between the gp120 and gp41 subunits is an antigenic mimic of the trimeric virion-associated structure. J Virol. 2000; 74(2):627-43. PMC: 111582. DOI: 10.1128/jvi.74.2.627-643.2000. View

2.
Briggs D, Tuttle D, Sleasman J, Goodenow M . Envelope V3 amino acid sequence predicts HIV-1 phenotype (co-receptor usage and tropism for macrophages). AIDS. 2001; 14(18):2937-9. DOI: 10.1097/00002030-200012220-00016. View

3.
Kwong P, Wyatt R, Sattentau Q, Sodroski J, Hendrickson W . Oligomeric modeling and electrostatic analysis of the gp120 envelope glycoprotein of human immunodeficiency virus. J Virol. 2000; 74(4):1961-72. PMC: 111674. DOI: 10.1128/jvi.74.4.1961-1972.2000. View

4.
Sanders R, Schiffner L, Master A, Kajumo F, Guo Y, Dragic T . Variable-loop-deleted variants of the human immunodeficiency virus type 1 envelope glycoprotein can be stabilized by an intermolecular disulfide bond between the gp120 and gp41 subunits. J Virol. 2000; 74(11):5091-100. PMC: 110861. DOI: 10.1128/jvi.74.11.5091-5100.2000. View

5.
Tugarinov V, Zvi A, Levy R, Hayek Y, Matsushita S, Anglister J . NMR structure of an anti-gp120 antibody complex with a V3 peptide reveals a surface important for co-receptor binding. Structure. 2000; 8(4):385-95. DOI: 10.1016/s0969-2126(00)00119-2. View