GAL3ST3 is a member of the galactose-3-O-sulfotransferase protein family. It catalyzes sulfonation by transferring a sulfate group to the 3' position of galactose in N-acetyllactosamine in both type 2 (Gal-beta-1-4GlcNAc-R) oligosaccharides and core-2-branched O-glycans, but not on type 1 or core-1-branched structures. This gene, which has also been referred to as GAL3ST2, is different from the GAL3ST2 gene located on chromosome 2 that encodes a related enzyme with distinct tissue distribution and substrate specificities, compared to galactose-3-O-sulfotransferase 3. Synonyms: Polyclonal GAL3ST3 antibody, Anti-GAL3ST3 antibody, galactose-3-O-sulfotransferase 3 antibody, GAL3ST-3 antibody, GAL3ST2 antibody, MGC142112 antibody, MGC142114 antibody.