Envelope surface glycoprotein gp120
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env
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The coreceptor-binding site in HIV-1 gp120 is centered around an anti-parallel beta-sheet structure 'bridging sheet domain'; mutations in and adjacent to this domain affect the use of coreceptors CCR3 and CCR8 by gp120 for virus entry |
PubMed
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env
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CCR3 is an alternative coreceptor usage by R5-tropic HIV-1 type C gp120/gp41, although its usage frequency is less than that of CCR5 coreceptor |
PubMed
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env
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HIV-1 gp120 utilization of CCR3 as a coreceptor facilitates infection by a more restricted subset of primary viruses, and binding of the CCR3 ligand, eotaxin, inhibits infection by these isolates |
PubMed
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env
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Utilization of CCR3 and CCR5 as coreceptors of HIV-1 binding/fusion depends upon the sequence of the third variable (V3) region of the HIV-1 gp120 exterior envelope glycoprotein |
PubMed
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env
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Macrophage-tropic HIV-1 can use CCR2b, and to a lesser extent CCR3, STRL33, and APJ, to infect cells; the V1/2 region of HIV-1 gp120 plays a more important role in governing the use of CCR2b, CCR3, STRL33, and APJ than for CXCR4 |
PubMed
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env
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Amino acid N356 in conserved region 3 of HIV-1 gp120 and amino acids R440 and N448 in conserved region 4 of gp120 are three amino-acid determinants for CCR3 use as a coreceptor for HIV-1 entry into cells |
PubMed
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env
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HIV-1 isolates showing CCR3 tropism are particularly efficient in using CMKLR1/ChemR23 as a co-receptor; some HIV-2 and SIV isolates also use CMKLR1/ChemR23 |
PubMed
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Envelope transmembrane glycoprotein gp41
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env
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CCR3 is an alternative coreceptor usage by R5-tropic HIV-1 type C gp120/gp41, although its usage frequency is less than that of CCR5 coreceptor |
PubMed
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Nef
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nef
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HIV-1 Nef induces variable levels of CCR3 downregulation in different cell types |
PubMed
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Tat
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tat
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HIV-1 Tat-mediated activation of the CB2R leads to altered expression and compartmentation of the beta-chemokine receptor CCR-3 |
PubMed
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tat
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HIV-1 Tat-induced platelet activation requires the chemokine receptor CCR3 and beta3-integrin expression on platelets and calcium flux in platelets |
PubMed
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tat
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HIV-1 Tat binds to CCR3 and displaces MCP-3 from this beta-chemokine receptor, an effect mediated by Tat amino acids 24-51 |
PubMed
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tat
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HIV-1 Tat upregulates CCR3 expression on monocytes/macrophages, Fc epsilonRI+ cells and blood brain barrier cultures, and acts as a potent chemoattractant, indicating a role for Tat in HIV-1 pathogenesis and in promoting HIV-1 infectivity |
PubMed
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