Carboxy-cis,cis-muconate cyclase

Carboxy-cis,cis-muconate cyclase
Identifiers
EC no.5.5.1.5
CAS no.37318-55-1
Databases
BRENDAenzyme data
ExPASyNiceZyme view
KEGGenzyme entry
MetaCycmetabolic pathway
Rheareactions
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
Search
PMCarticles
PubMedarticles
NCBIproteins

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​.

References

  1. ↑ Enzyme 5.5.1.5 at KEGG Pathway Database.
  2. ↑ Gross SR, Gafford RD, Tatum EL (1956). "The metabolism of protocatechuic acid by Neurospora". J. Biol. Chem. 219 (2): 781–96. doi:10.1016/S0021-9258(18)65737-0. PMID 13319299.