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Carboxy-cis,cis-muconate cyclase

Class of enzymes From Wikipedia, the free encyclopedia

Carboxy-cis,cis-muconate cyclase (EC 5.5.1.5) is an enzyme that catalyzes the chemical reaction

2D representation of the chemical structure of Q27102166.
2-(carboxymethyl)-5-oxo-2,5-dihydro-3-furoic acid
 
 
 
Reversible left-right reaction arrow
 
 
 

The enzyme has one substrate, 2-(carboxymethyl)-5-oxo-2,5-dihydro-3-furoic acid, which is converted to 3-carboxy-cis,cis-muconic acid.[1][2]

This enzyme belongs to the family of isomerases, specifically the class of intramolecular lyases. The systematic name of this enzyme class is 3-carboxy-2,5-dihydro-5-oxofuran-2-acetate lyase (decyclizing). This enzyme is also called 3-carboxymuconate cyclase. 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 PDB: 1JOF​.

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