Reaction catalyzed by heparan-alpha-glucosaminide N-acetyltransferase (2.3.1.78)

		+			=		CoA	+
	acetyl-CoA	+		4-methylumbelliferyl-beta-D-glucosaminide	=		CoA	+		4-methylumbelliferyl-N-acetyl-beta-D-glucosaminide