label: N-acetyl-beta-glucosaminyl-glycoprotein 4-beta-N-acetylgalactosaminyltransferase activity
label_lc: n-acetyl-beta-glucosaminyl-glycoprotein 4-beta-n-acetylgalactosaminyltransferase activity
description: "Catalysis of the reaction: UDP-N-acetyl-D-galactosamine + N-acetyl-beta-D-glucosaminyl group = UDP + N-acetyl-beta-D-galactosaminyl-(1->4)-N-acetyl-beta-D-glucosaminyl group."