Anti-RPB11b1 antibodies enable researchers to detect and measure the RPB11b1 antigen in biological samples. This target is a reported synonym of the POLR2J2 gene, which encodes RNA polymerase II subunit J2. The human version of RPB11b1 has a canonical amino acid length of 115 residues and a protein mass of 13.1 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the nucleus of cells. RPB11b1 is a member of the Archaeal Rpo11/eukaryotic RPB11/RPC19 RNA polymerase subunit protein family.