Acetylgalactosaminyl O glycosyl glycoprotein b 1,3 N acetylglucosaminyltransferase

Acetylgalactosaminyl-O-glycosyl-glycoprotein beta-1,3-N-acetylglucosaminyltransferase (EC 2.4.1.147, O-glycosyl-oligosaccharide-glycoprotein N-acetylglucosaminyltransferase III, uridine diphosphoacetylglucosamine-mucin beta(1->3)-acetylglucosaminyltransferase, mucin core 3 beta3-GlcNAc-transferase, Core 3beta-GlcNAc-transferase, UDP-N-acetyl-D-glucosamine:O-glycosyl-glycoprotein (N-acetyl-D-glucosamine to N-acetyl-D-galactosaminyl-R) beta-1,3-N-acetyl-D-glucosaminyltransferase) is an enzyme with systematic name UDP-N-acetyl-D-glucosamine:N-acetyl-beta-D-galactosaminyl-R 3-beta-N-acetyl-D-glucosaminyltransferase. This enzyme catalyses the following chemical reaction

UDP-N-acetyl-D-glucosamine + N-acetyl-beta-D-galactosaminyl-R ⇌ UDP + N-acetyl-beta-D-glucosaminyl-(1->3)-N-acetyl-beta-D-galactosaminyl-R