EC - D-xylose 1-dehydrogenase (NADP+, D-xylono-1,5-lactone-forming)

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IntEnz Enzyme Nomenclature


Accepted name:
D-xylose 1-dehydrogenase (NADP+, D-xylono-1,5-lactone-forming)
Other names:
D-xylose (nicotinamide adenine dinucleotide phosphate) dehydrogenase [ambiguous]
D-xylose-NADP dehydrogenase [ambiguous]
D-xylose:NADP+ oxidoreductase
Systematic name:
D-xylose:NADP+ 1-oxidoreductase (D-xylono-1,5-lactone-forming)



The enzyme, characterized from pig arterial vessels and eye lens, also acts, more slowly, on L-arabinose and D-ribose. Cf. EC, D-xylose 1-dehydrogenase (NADP+, D-xylono-1,4-lactone-forming).

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0047837
CAS Registry Number: 83534-37-6
UniProtKB/Swiss-Prot: (16) [show] [UniProt]


  1. Wissler, J.H.
    D-Xylose:NADP oxidoreductase of arterial vessels and eye lens: a new enzyme and a final link in ATP-independent cycling of reducing eqivalents in aldose-polyol-ketose interconversion.
    Hoppe-Seyler's Z. Physiol. Chem. 358 : 1300-1301 (1977).
  2. Wissler, J.H.
    Direct spectrophotometric and specific quantitative determination of free and bound D-xylose by analytical application of a new enzyme, D-xylose:NADP-oxidoreductase.
    Fresenius' Z. Anal. Chem. 290 : 179-180 (1978).

[EC created 1982, modified 2020]