The Enzyme Database

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EC 3.1.1.24     
Accepted name: 3-oxoadipate enol-lactonase
Reaction: 3-oxoadipate enol-lactone + H2O = 3-oxoadipate
For diagram of benzoate metabolism, click here
Other name(s): carboxymethylbutenolide lactonase; β-ketoadipic enol-lactone hydrolase; 3-ketoadipate enol-lactonase; 3-oxoadipic enol-lactone hydrolase; β-ketoadipate enol-lactone hydrolase
Systematic name: 4-carboxymethylbut-3-en-4-olide enol-lactonohydrolase
Comments: The enzyme acts on the product of EC 4.1.1.44 4-carboxymuconolactone decarboxylase.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 9031-04-3
References:
1.  Ornston, L.N. The conversion of catechol and protocatechuate to β-ketoadipate by Pseudomonas putida. II. Enzymes of the protocatechuate pathway. J. Biol. Chem. 241 (1966) 3787–3794. [PMID: 5916392]
2.  Ornston, L.N. Conversion of catechol and protocatechuate to β-ketoadipate (Pseudomonas putida). Methods Enzymol. 17A (1970) 529–549.
[EC 3.1.1.24 created 1961 as EC 3.1.1.16, part transferred 1972 to EC 3.1.1.24]
 
 
EC 4.1.1.44     
Accepted name: 4-carboxymuconolactone decarboxylase
Reaction: (R)-2-carboxy-2,5-dihydro-5-oxofuran-2-acetate = 4,5-dihydro-5-oxofuran-2-acetate + CO2
For diagram of benzoate metabolism, click here
Glossary: 4-carboxymuconolactone = 2-carboxy-2,5-dihydro-5-oxofuran-2-acetate
Other name(s): γ-4-carboxymuconolactone decarboxylase; 4-carboxymuconolactone carboxy-lyase; 2-carboxy-2,5-dihydro-5-oxofuran-2-acetate carboxy-lyase (4,5-dihydro-5-oxofuran-2-acetate-forming)
Systematic name: (R)-2-carboxy-2,5-dihydro-5-oxofuran-2-acetate carboxy-lyase (4,5-dihydro-5-oxofuran-2-acetate-forming)
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 37289-46-6
References:
1.  Ornston, L.N. The conversion of catechol and protocatechuate to β-ketoadipate by Pseudomonas putida. 3. Enzymes of the catechol pathway. J. Biol. Chem. 241 (1966) 3795–3799. [PMID: 5330966]
2.  Ornston, L.N. Conversion of catechol and protocatechuate to β-ketoadipate (Pseudomonas putida). Methods Enzymol. 17A (1970) 529–549.
[EC 4.1.1.44 created 1972]
 
 


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