Reaction catalyzed by oligosaccharide reducing-end xylanase (3.2.1.156)

		+		H2O	=			+
	2-nitrohenyl Xylbeta(1-4)Xylbeta(1-4)Xylbeta(1-4)Xyl	+		H2O	=		2-nitrophenol	+		Xylbeta(1-4)Xylbeta(1-4)Xylbeta(1-4)Xyl