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

		+			=			+
	UDP-N-acetylgalactosamine	+		octyl 4-O-methyl-alpha-L-fucopyranosyl-(1-2)-beta-D-galactopyranoside	=		UDP	+		N-acetyl-alpha-D-galactosaminyl-1,3-[4-O-methyl-alpha-L-fucosyl-1,2]-beta-D-galactosyl-O(CH2)7CH3