Reaction catalyzed by UDP-Gal:alpha-D-GlcNAc-diphosphoundecaprenol alpha-1,3-galactosyltransferase (2.4.1.343)

		+			=			+
	UDP-alpha-D-galactose	+		N-acetyl-alpha-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol	=		UDP	+		alpha-D-Gal-(1->3)-alpha-D-GlcNAc-diphospho-ditrans,octacis-undecaprenol