Reaction catalyzed by beta-N-acetylhexosaminidase (3.2.1.52), protein O-GlcNAcase (3.2.1.169)

		+		H2O	=			+
	4-methylumbelliferyl-N-acetyl-beta-D-glucosaminide	+		H2O	=		4-methylumbelliferone	+		N-acetyl-beta-D-glucosamine