Reaction catalyzed by cellodextrin phosphorylase (2.4.1.49)

		+			=			+
	beta-D-Glc(1-4)-D-Xyl	+		alpha-D-xylose 1-phosphate	=		beta-D-Xyl-(1-4)-D-Glc-(1-4)-D-Xyl	+		phosphate