Anti-ABCG4 antibodies are used in the immunodetection of the protein ATP binding cassette subfamily G member 4. In humans, the canonical protein has a reported length of 646 amino acid residues and a mass of 71.9 kDa. Its subcellular localization is in the cytoplasmic vesicles and cell membrane. Up to 4 different isoforms have been reported for this protein. It is notably expressed in the brain and the eye. A member of the ABCG protein family, ABCG4 is reported to be an aTP-dependent transporter of the ATP-binding cassette (ABC) family that may be involved in the cellular efflux of sterols, in particular cholesterol and desmosterol (a cholesterol precursor), to high-density lipoprotein (HDL). Synonyms for this target antigen include ATP-binding cassette, sub-family G (WHITE), member 4 and putative ABC transporter. ABCG4 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of ABCG4 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.