Caffeate 3,4-dioxygenase

Caffeate 3,4-dioxygenase (EC 1.13.11.22) is an enzyme that catalyzes the chemical reaction

3,4-dihydroxy-trans-cinnamate + O2 3-(2-carboxyethenyl)-cis,cis-muconate
caffeate 3,4-dioxygenase
Identifiers
EC no.1.13.11.22
CAS no.37256-61-4
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
Search
PMCarticles
PubMedarticles
NCBIproteins

Thus, the two substrates of this enzyme are 3,4-dihydroxy-trans-cinnamate (caffeic acid) and oxygen, whereas its product is 3-(2-carboxyethenyl)-cis,cis-muconate.

This enzyme belongs to the family of oxidoreductases, specifically those acting on single donors with O2 as oxidant and incorporation of two atoms of oxygen into the substrate (oxygenases). The oxygen incorporated need not be derived from O2. The systematic name of this enzyme class is 3,4-dihydroxy-trans-cinnamate:oxygen 3,4-oxidoreductase (decyclizing). This enzyme participates in phenylpropanoid biodegradation.

References

    • Seidman MM, Toms A, Wood JM (1969). "Influence of side-chain substituents on the position of cleavage of the benzene ring by Pseudomonas fluorescens". J. Bacteriol. 97 (3): 1192–7. doi:10.1128/jb.97.3.1192-1197.1969. PMC 249834. PMID 5776526.
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