Anti-RFC4 antibodies are used in the immunodetection of the protein replication factor C subunit 4. In humans, the canonical protein has a reported length of 363 amino acid residues and a mass of 39.7 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 Activator 1 small subunits protein family, RFC4 is known to be involved with DNA repair and DNA replication. Synonyms for this target antigen include RFC37, A1 37 kDa subunit, RF-C 37 kDa subunit, RFC 37 kDa subunit, activator 1 37 kDa subunit, and A1. RFC4 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of RFC4 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. Immunocytochemistry, Immunofluorescence, and Immunohistochemistry are also common applications.