Reaction catalyzed by endo-alpha-N-acetylgalactosaminidase (3.2.1.97)

		+		H2O	=			+
	Galbeta(1-3)GalNAcalpha(1-)OC6H4-o-NO2	+		H2O	=		Galbeta(1-3)GalNAc	+		o-nitrophenol