Reaction catalyzed by alpha-glucuronidase (3.2.1.139)

		+		H2O	=			+
	4-O-methyl-alpha-D-glucopyranuronosyl-(1-2)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranose	+		H2O	=		4-O-methyl-alpha-D-glucuronic acid	+		beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranose