Xylonate dehydratase

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In enzymology, a xylonate dehydratase (EC is an enzyme that catalyzes the chemical reaction

D-xylonate 2-dehydro-3-deoxy-D-xylonate + H2O

Hence, this enzyme has one substrate, D-xylonate, and two products, 2-dehydro-3-deoxy-D-xylonate and H2O.

This enzyme belongs to the family of lyases, specifically the hydro-lyases, which cleave carbon-oxygen bonds. The systematic name of this enzyme class is D-xylonate hydro-lyase (2-dehydro-3-deoxy-D-xylonate-forming). Other names in common use include D-xylo-aldonate dehydratase, D-xylonate dehydratase, and D-xylonate hydro-lyase. This enzyme participates in pentose and glucuronate interconversions.


  • IUBMB entry for
  • BRENDA references for (Recommended.)
  • PubMed references for
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  • Google Scholar references for
  • Dahms AS, Donald A (1982). "D-xylo-Aldonate dehydratase". Methods. Enzymol. 90 Pt. E: 302&ndash, 5. PMID 7154961.
  • Donald A, Sibley D, Lyons DE, Dahms AS (1979). "D-Galactonate dehydrase. Purification and properties". J. Biol. Chem. 254: 2132&ndash, 7. PMID 422572.

External links

The CAS registry number for this enzyme class is 84788-77-2.

Gene Ontology (GO) codes