Dehydro-L-gulonate decarboxylase

Dehydro-L-gulonate decarboxylase
dehydro-L-gulonate decarboxylase
Identifiers
EC number 4.1.1.34
CAS number 9024-67-3
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / EGO

In enzymology, a dehydro-L-gulonate decarboxylase (EC 4.1.1.34) is an enzyme that catalyzes the chemical reaction

3-dehydro-L-gulonate \rightleftharpoons L-xylulose + CO2

Hence, this enzyme has one substrate, 3-dehydro-L-gulonate, and two products, L-xylulose and CO2.

This enzyme belongs to the family of lyases, specifically the carboxy-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is 3-dehydro-L-gulonate carboxy-lyase (L-xylulose-forming). Other names in common use include keto-L-gulonate decarboxylase, 3-keto-L-gulonate decarboxylase, and 3-dehydro-L-gulonate carboxy-lyase. This enzyme participates in pentose and glucuronate interconversions.

References

  • Smiley JD and Ashwell G (1961). "Purification and properties of beta-L-hydroxy acid dehydrogenase II. Isolation of beta-keto-L-gluconic acid, an intermediate in L-xylulose biosynthesis". J. Biol. Chem. 236: 357–364. 
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