Reaction catalyzed by globotriaosylceramide 3-beta-N-acetylgalactosaminyltransferase (2.4.1.79)

		+			=			+
	UDP-N-acetyl-D-galactosamine	+		Galalpha1,4Galbeta1,4Glc	=		UDP	+		GalNAcbeta1,3-D-Galalpha1,4Galbeta1,4Glc