Reaction catalyzed by UDP-glucose-hexose-1-phosphate uridylyltransferase (2.7.7.12)

		+			=			+
	UDP-alpha-D-glucose	+		N-acetyl-alpha-D-glucosamine 1-phosphate	=		alpha-D-glucose 1-phosphate	+		UDP-N-acetyl-alpha-D-glucosamine