Reaction catalyzed by alpha-N-acetylgalactosaminidase (3.2.1.49)

	4-nitrophenyl alpha-N-acetylgalactosaminide	+		H2O	=			+
	4-nitrophenyl alpha-N-acetylgalactosaminide	+		H2O	=		4-nitrophenol	+		alpha-N-acetylgalactosamine