Reaction catalyzed by lipopolysaccharide N-acetylmannosaminouronosyltransferase (2.4.1.180)

		+			=			+
	UDP-N-acetyl-alpha-D-mannosaminouronate	+		N-acetyl-alpha-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol	=		UDP	+		N-acetyl-beta-D-mannosaminouronyl-(1->4)-N-acetyl-alpha-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol