Reaction catalyzed by alpha-glucuronidase (3.2.1.139)

	2-O-alpha-(4-O-methyl-alpha-D-glucopyranosyluronic acid)-D-xylose	+		H2O	=			+
	2-O-alpha-(4-O-methyl-alpha-D-glucopyranosyluronic acid)-D-xylose	+		H2O	=		4-O-methylglucuronic acid	+		D-xylose