Anti-UGT1A4 antibodies are used in the immunodetection of the protein UDP glucuronosyltransferase family 1 member A4. In humans, the canonical protein has a reported length of 534 amino acid residues and a mass of 60 kDa. Its subcellular localization is in the ER. Up to 2 different isoforms have been reported for this protein. A member of the UDP-glycosyltransferase protein family, UGT1A4 is reported to be a UDP-glucuronosyltransferase (UGT) that catalyzes phase II biotransformation reactions in which lipophilic substrates are conjugated with glucuronic acid to increase the metabolite's water solubility, thereby facilitating excretion into either the urine or bile. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include HUG-BR2, UDPGT, UDPGT 1-4, UGT-1A, UGT-1D, UGT1, UGT1-01, and GNT1. A number of UGT1A4 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.