Reaction catalyzed by galactan endo-beta-1,3-galactanase (3.2.1.181)

		+		H2O	=			+
	beta-D-galactopyranosyl-(1->3)-beta-D-galactopyranosyl-(1->3)-beta-D-galactopyranosyl-(1->3)-beta-D-galactopyranosyl-(1->3)-beta-D-galactopyranose	+		H2O	=		3-O-beta-D-galactopyranosyl-beta-D-galactopyranose	+		D-galactose