Reaction catalyzed by N-acetylglucosaminyl-diphospho-decaprenol L-rhamnosyltransferase (2.4.1.289)

		+			=			+
	dTDP-6-deoxy-beta-L-mannose	+		N-acetyl-alpha-D-glucosaminyl-diphospho-trans,octacis-decaprenol	=		dTDP	+		alpha-L-rhamnopyranosyl-(1->3)-N-acetyl-alpha-D-glucosaminyl-diphospho-trans,octacis-decaprenol