Reaction catalyzed by alpha-N-acetylglucosaminidase (3.2.1.50)

		+		H2O	=			+
	4-methylumbelliferyl 4-O-N-acetyl-alpha-D-glucosaminyl-beta-D-galactoside	+		H2O	=		N-acetyl-alpha-D-glucosamine	+		4-methylumbelliferyl beta-D-galactosaminide