Reaction catalyzed by 3-galactosyl-N-acetylglucosaminide 4-alpha-L-fucosyltransferase (2.4.1.65)

		+			=			+
	GDP-fucose	+		Gal-beta-1,4-GlcNAc-O-(CH2)8CO2CH3	=		GDP	+		Gal-beta-1,4[alpha-fucosyl(1,3)]-GLCNAc-O-(CH2)8CO2CH3