Reaction catalyzed by 4-galactosyl-N-acetylglucosaminide 3-alpha-L-fucosyltransferase (2.4.1.152)

		+			=			+
	GDP-fucose	+		methyl beta-D-galactosyl-(1-4)-2-deoxy-2-acetylamino-6-deoxy-6-formylamino-beta-D-glucopyranose	=		GDP	+		methyl beta-D-galactosyl-(1-4)-[alpha-D-fucosyl-(1-3)]-2-deoxy-2-acetylamino-6-deoxy-6-formylamino-beta-D-glucopyranose