4-carboxymuconolactone decarboxylase

4-carboxymuconolactone decarboxylase
Identifiers
EC number 4.1.1.44
CAS number 37289-46-6
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 4-carboxymuconolactone decarboxylase (EC 4.1.1.44) is an enzyme that catalyzes the chemical reaction

2-carboxy-2,5-dihydro-5-oxofuran-2-acetate 4,5-dihydro-5-oxofuran-2-acetate + CO2

Hence, this enzyme has one substrate, 2-carboxy-2,5-dihydro-5-oxofuran-2-acetate, and two products, 4,5-dihydro-5-oxofuran-2-acetate 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 2-carboxy-2,5-dihydro-5-oxofuran-2-acetate carboxy-lyase (4,5-dihydro-5-oxofuran-2-acetate-forming). Other names in common use include gamma-4-carboxymuconolactone decarboxylase, and 4-carboxymuconolactone carboxy-lyase. This enzyme participates in benzoate degradation via hydroxylation.

Structural studies

As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code 2AF7.

References

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