The function of Ensembl gene identifier ENSG00000275302 (CCL4, C-C motif chemokine ligand 4) is as follows. Monokine with inflammatory and chemokinetic properties. Binds to CCR5. One of the major HIV-suppressive factors produced by CD8+ T- cells. Recombinant MIP-1-beta induces a dose-dependent inhibition of different strains of HIV-1, HIV-2, and simian immunodeficiency virus (SIV). The processed form MIP-1-beta(3-69) retains the abilities to induce down-modulation of surface expression of the chemokine receptor CCR5 and to inhibit the CCR5-mediated entry of HIV-1 in T-cells. MIP-1- beta(3-69) is also a ligand for CCR1 and CCR2 isoform B. {ECO:0000269|PubMed:10540332, ECO:0000269|PubMed:12070155, ECO:0000269|PubMed:8525373}.