Anti-POLR2H antibodies are used in the immunodetection of the protein RNA polymerase II, I and III subunit H. In humans, the canonical protein has a reported length of 150 amino acid residues and a mass of 17.1 kDa. Its subcellular localization is in the nucleus. Up to 5 different isoforms have been reported for this protein. It is notably widely expressed in many tissue types. A member of the Eukaryotic RPB8 RNA polymerase subunit protein family, POLR2H is known to be involved with transcription by RNA polymerase II. Synonyms for this target antigen include RPB17, RPB8, DNA-directed RNA polymerases I, II, and III subunit RPABC3, DNA-directed RNA polymerase II subunit H, and RPABC3. POLR2H gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some POLR2H antibodies may have been used in research and have associated citations. These antibodies are most commonly used in Western Blot experiments, among other applications.