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

		+			=			+
	GDP-beta-L-fucose	+		NeuNAcalpha(2->3)Galbeta(1->4)GlcNAc	=		GDP	+		NeuNAcalpha(2->3)Galbeta(1->4)[L-Fucalpha(1->3)]GlcNAc