Reaction catalyzed by glucuronoarabinoxylan endo-1,4-beta-xylanase (3.2.1.136)

		+		H2O	=			+
	alpha-D-glucopyranuronosyl-(1-2)-[alpha-D-glucopyranuronosyl-(1-2)-[beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)]-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)]-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranose	+		H2O	=		4-O-beta-D-xylopyranosyl-beta-D-xylopyranose	+		alpha-D-glucopyranuronosyl-(1-2)-[alpha-D-glucopyranuronosyl-(1-2)-[beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)]-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta--D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranosyl-(1-4)]-beta-D-xylopyranosyl-(1-4)-beta-D-xylopyranose