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

		+			=			+
	GDP-fucose	+		sialyl-alpha-2,3-N-acetyllactosamine	=		GDP	+		NeuNAcalpha2-3Galbeta1-4[Fucalpha1-3]GlcNAc