Anti-FAF1 antibodies are used in the immunodetection of the protein Fas associated factor 1. In humans, the canonical protein has a reported length of 650 amino acid residues and a mass of 74 kDa. Its subcellular localization is in the nucleus. Up to 2 different isoforms have been reported for this protein. It is notably expressed in the testis, slightly less abundant in skeletal muscle and heart, followed by prostate, thymus, ovary, small intestine, and colon. FAF1 is known to be involved with the apoptotic pathway. Synonyms for this target antigen include HFAF1s, UBXD12, UBXN3A, hFAF1, Fas (TNFRSF6) associated factor 1, and CGI-03. FAF1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of FAF1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. In addition, Immunohistochemistry is also a common application.