coreceptor

(kō″rē-sep′tŏr)

[com- + receptor]
A structure on a cell membrane that enhances the action of the cell receptor.

CCR5 coreceptor

A cell surface receptor found on macrophages that facilitates entry of HIV-1 into these cells. Chemokines released by T cells attempt to compete with HIV by blocking the receptor to prevent infection.

CXCR4 coreceptor

A cell surface receptor found on T cells that facilitates entry of HIV-1 into these cells.
SYN: SEE: fusin