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

		+			=			+
	GDP-L-fucose	+		Galbeta(1,4)GlcNAc-O(CH2)8CO2CH3	=		GDP	+		Galbeta(1,4)(Fucalpha(1,3))GlcNAc-O(CH2)8CO2CH3