Xylono-1,4-lactonase

In enzymology, a xylono-1,4-lactonase (EC 3.1.1.68) is an enzyme that catalyzes the chemical reaction

D-xylono-1,4-lactone + H2O D-xylonate
xylono-1,4-lactonase
Identifiers
EC number3.1.1.68
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO

Thus, the two substrates of this enzyme are D-xylono-1,4-lactone and H2O, whereas its product is D-xylonate.

This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name of this enzyme class is D-xylono-1,4-lactone lactonohydrolase. Other names in common use include xylono-g-lactonase, and xylonolactonase. This enzyme participates in pentose and glucuronate interconversions.

References

    • Buchert J, Viikari L (1988). "The role of xylonolactone in xylonic acid production by Pseudomonas fragi". Appl. Microbiol. Biotechnol. 27: 333–336. doi:10.1007/bf00251763.


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