Anti-GALNT9 antibodies are used in the immunodetection of the protein polypeptide N-acetylgalactosaminyltransferase 9. In humans, the canonical protein has a reported length of 603 amino acid residues and a mass of 68.4 kDa. Its subcellular localization is in the Golgi. Up to 2 different isoforms have been reported for this protein. It is notably expressed in the brain. A member of the Glycosyltransferase 2 protein family, GALNT9 is known to catalyze the initial reaction in O-linked oligosaccharide biosynthesis, the transfer of an N-acetyl-D-galactosamine residue to a serine or threonine residue on the protein receptor. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include GALNACT9, GalNAc transferase 9, UDP-GalNAc: polypeptide N-acetylgalactosaminyltransferase 9, UDP-N-acetyl-alpha-D-galactosamine:polypeptide N-acetylgalactosaminyltransferase 9 (GalNAc-T9), and GALNAC-T9. GALNT9 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Western Blot is a widely used application for the GALNT9 antibodies listed below. In addition, ELISA is also a common application.