Reaction catalyzed by beta-N-acetylgalactosaminidase (3.2.1.53)

		+		H2O	=			+
	(GalNAcbeta(1-4))n	+		H2O	=		(GalNAcbeta(1-4))n-1	+		2-(acetylamino)-2-deoxy-beta-D-galactopyranose