Anti-polymerase (RNA) I subunit C antibodies enable researchers to detect and measure the polymerase (RNA) I subunit C antigen in biological samples. This target is a reported synonym of the POLR1C gene, which encodes RNA polymerase I and III subunit C. The human version of polymerase (RNA) I subunit C has a canonical amino acid length of 346 residues and a protein mass of 39.3 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the nucleus of cells. polymerase (RNA) I subunit C is a member of the Archaeal Rpo3/eukaryotic RPB3 RNA polymerase subunit protein family.