. "\"Catalysis of the reaction: D-xylose = D-xylulose.\" [EC:5.3.1.5]" . . "xylose isomerase activity" . "D-xylose aldose-ketose-isomerase activity" . "D-xylose isomerase activity" . "D-xylose ketoisomerase activity" . "D-xylose ketol-isomerase activity" . "EC:5.3.1.5" . "MetaCyc:XYLISOM-RXN" . "RHEA:22819" . .