beta-galactoside alpha-2,3-sialyltransferase 1 and 2
ST3GAL family transfer sialic acid from CMP-Sia to the terminalgalactose residues of glycochains through an 2,3-linkage. ST3GAL1 and 2 preferentially utilize the Galbeta1,3GalNAc on O-glycans of glycoproteins (core1O-glycans) and on glycolipids as an acceptor substrate, respectively. Members ofthis family belong to glycosyltransferase family 29.