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

		+			=			+
	UDP-alpha-D-galactose	+		1-O-(6-phenoxyhex-1-yl-diphosphoryl)-alpha-D-glucopyranoside	=		UDP	+		1-O-(6-phenoxyhexadecyl-diphosphoryl)-3-O-beta-D-galactopyranosyl-alpha-D-glucopyranoside