Microseminoprotein, prostate associated is a protein that in humans is encoded by the MSMP gene. This gene encodes a member of the beta-microseminoprotein family. Members of this protein family contain ten conserved cysteine residues that form intra-molecular disulfide bonds. The encoded protein may play a role in prostate cancer tumorigenesis. Predicted to enable CCR2 chemokine receptor binding activity. Predicted to be involved in lymphocyte chemotaxis and monocyte chemotaxis. Predicted to be active in cytoplasm and extracellular space.