Reaction catalyzed by alpha-N-acetylgalactosaminidase (3.2.1.49), beta-N-acetylhexosaminidase (3.2.1.52)

		+		H2O	=			+
	4-nitrophenyl N-acetyl-beta-D-galactosamine	+		H2O	=		4-nitrophenol	+		N-acetyl-beta-galactosamine