Anti-Rb2 antibodies enable researchers to detect and measure the Rb2 antigen in biological samples. This target is a reported synonym of the RBL2 gene, which encodes RB transcriptional corepressor like 2. This protein is known to function in the cell cycle and cell differentiation, among other biological roles. The human version of Rb2 has a canonical amino acid length of 1139 residues and a protein mass of 128.4 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the nucleus of cells and widely expressed in many tissue types. Other names for this target antigen include BRUWAG and P130.