Reaction catalyzed by blood-group-substance endo-1,4-beta-galactosidase (3.2.1.102)

		+		H2O	=			+
	Galalpha(1-3)[Fucalpha(1-2)]Galbeta(1-4)GlcNAcbeta-R	+		H2O	=		Galalpha(1-3)[Fucalpha(1-2)]Gal	+		GlcNAcbeta-R