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

		+			=			+
	GDP-beta-L-fucose	+		GalNAcbeta1-4GlcNAcbeta1-3Galbeta1-4Glc	=		GDP	+		GalNAcbeta1-4(Fucalpha1-3)GlcNAcbeta1-3Galbeta1-4Glc