. . . . . . . . . . . . . . "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" . "HIV-1 gp120 from CXCR4-tropic subtype E viruses isolated in Thailand associates with and uses at least one of the following coreceptors for virus entry: CCR8, CCR1, CCR2b, or CX3CR1" . "Treatment of the resting CD4+ T cells with HIV-1 clade B Tat, but not clade C Tat, increases surface CXCR4 expression, which leads to increased function of CXCR4 including increased chemoattraction toward CXCR4-using-gp120" . "interacts with" . "binds" . "associates with" .