Anti-ETFRF1 antibodies are used in the immunodetection of the protein electron transfer flavoprotein regulatory factor 1. In humans, the canonical protein has a reported length of 90 amino acid residues and a mass of 10.9 kDa. Its subcellular localization is in the mitochondria. It is notably expressed in the stomach, oral mucosa, heart muscle, and colon. A member of the Complex I LYR protein family, ETFRF1 is known to act as a regulator of the electron transfer flavoprotein by promoting the removal of flavin from the ETF holoenzyme (composed of ETFA and ETFB). Synonyms for this target antigen include LYR motif containing 5 and LYR motif-containing protein 5. ETFRF1 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. Some ETFRF1 antibodies may have been used in research and have associated citations. ELISA, Immunocytochemistry, Immunofluorescence, and Immunohistochemistry are common applications for these antibodies.