Reaction catalyzed by UDP-Gal:alpha-D-GlcNAc-diphosphoundecaprenol beta-1,3-galactosyltransferase (2.4.1.303)

		+			=			+
	UDP-alpha-D-galactose	+		GlcNAc-alpha-PO3-PO3-(CH2)11-O-phenyl	=		UDP	+		D-Gal-beta-(1->3)-GlcNAc-alpha-PO3-PO3-(CH2)11-O-phenyl