This family represents the N-terminal region of the beta-1,3- galactosyltransferase 2 which contains a short cytosolic region, a transmembrane region which indicates that this protein has a type II transmembrane topology, typical for all mammalian glycosyltransferases and a stem region with two putative N-glycosylation sites. This enzyme catalyses the synthesis of type 1 carbohydrate chains, which contain the Gal(beta 1-3) GlcNAc linkage [1].

1: Cloning of a human UDP-galactose:2-acetamido-2-deoxy-D-glucose 3beta- galactosyltransferase catalyzing the formation of type 1 chains. Kolbinger F, Streiff MB, Katopodis AG; J Biol Chem 1998;273:433-440. PMID:9417100