Anti-GALNT20 antibodies enable researchers to detect and measure the GALNT20 antigen in biological samples. This target is a reported synonym of the GALNT17 gene, which encodes polypeptide N-acetylgalactosaminyltransferase 17. This protein is believed 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. The human version of GALNT20 has a canonical amino acid length of 598 residues and a protein mass of 67.8 kilodaltons. It is reported to be localized in the Golgi of cells and notably expressed in the hippocampus, cerebral cortex, and cerebellum. GALNT20 is a member of the Glycosyltransferase 2 protein family.