CCL3 (MIP-1α, C-C motif chemokine 3, G0/G1 switch regulatory protein 19-1 Macrophage inflammatory protein 1-alpha, PAT 464.1, SIS-beta, Small-inducible cytokine A3, Tonsillar lymphocyte LD78 alpha protein, G0S19-1, MIP1A, SCYA3, CCL3)

Macrophage inflammatory proteins 1-α (MIP1α)(CCL3) binds to cell surface receptors CCR1 and CCR5. It is proinflammatory, leading to chemotaxis and activation of immune cells. It also inhibits proliferation of hematopoietic stem cells. Moreover, by binding to one of the HIV coreceptors, CCR5, it suppresses HIV infection.