Anti-POLR3H antibodies are used in the immunodetection of the protein RNA polymerase III subunit H. In humans, the canonical protein has a reported length of 204 amino acid residues and a mass of 22.9 kDa. Its subcellular localization is in the nucleus. Up to 2 different isoforms have been reported for this protein. It is notably widely expressed in many tissue types. A member of the Eukaryotic RPB7/RPC8 RNA polymerase subunit protein family, POLR3H is known to be involved with innate immune responses. Synonyms for this target antigen include DNA-directed RNA polymerase III subunit 22.9 kDa polypeptide, DNA-directed RNA polymerase III subunit H, RNA nucleotidyltransferase (DNA-directed), and DNA-directed RNA polymerase III subunit RPC8. POLR3H gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some POLR3H antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.