Anti-POB1 antibodies enable researchers to detect and measure the POB1 antigen in biological samples. This target is a reported synonym of the REPS2 gene, which encodes RALBP1 associated Eps domain containing 2. This protein is known to function in endocytosis and the assembly of protein complexes, among other biological roles. The human version of POB1 has a canonical amino acid length of 660 residues and a protein mass of 71.5 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the cytoplasm of cells.