Reaction catalyzed by glycoprotein-fucosylgalactoside alpha-N-acetylgalactosaminyltransferase (2.4.1.40)

		+			=			+
	UDP-N-acetyl-alpha-D-galactosamine	+		glycoprotein-alpha-L-fucosyl-(1->2)-D-galactose	=		UDP	+		glycoprotein-N-acetyl-alpha-D-galactosaminyl-(1->3)-[alpha-L-fucosyl-(1->2)]-D-galactose