Anti-HM74a antibodies enable researchers to detect and measure the HM74a antigen in biological samples. This target is a reported synonym of the HCAR2 gene, which encodes hydroxycarboxylic acid receptor 2. This protein is known to function in GPCR signaling pathways and the metabolism of lipids, among other biological roles. The human version of HM74a has a canonical amino acid length of 363 residues and a protein mass of 41.9 kilodaltons. It is reported to be localized in the cell membrane of cells and notably expressed in the spleen, soft tissue, seminal vesicle, lymph node, and bone marrow. HM74a is a member of the G-protein coupled receptor 1 protein family.