Reaction catalyzed by xylan alpha-1,2-glucuronosidase (3.2.1.131)

		+		H2O	=			+
	(4O-Me)GlcAalpha(1-2)[(Xylbeta(1-3))n](Xylbeta(1-3)m)	+		H2O	=		Xylbeta(1-3)m+n	+		4-O-methyl-alpha-D-glucuronic acid