EC - Chloridazon-catechol dioxygenase

  IntEnz view ENZYME view

IntEnz Enzyme Nomenclature


Accepted name:
chloridazon-catechol dioxygenase
Other name:
5-amino-4-chloro-2-(2,3-dihydroxyphenyl)-3(2H)-pyridazinone 1,2-oxidoreductase (decyclizing)
Systematic name:
5-amino-4-chloro-2-(2,3-dihydroxyphenyl)-3(2H)-pyridazinone 1,2-oxidoreductase (ring-opening)




An iron protein, requiring additional Fe2+. Not identical with EC catechol 1,2-dioxygenase, EC catechol 2,3-dioxygenase or EC homogentisate 1,2-dioxygenase. Involved in the breakdown of the herbicide chloridazon.

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0047744
CAS Registry Number: 82869-32-7


  1. Müller, R, Haug, S., Eberspächer, J. and Lingens, F.
    Catechol-2,3-Dioxygenase aus Pyrazon-abbauenden Bakterien.
    Hoppe-Seyler's Z. Physiol. Chem. 358 : 797-805 (1977). [PMID: 19349]
  2. Müller, R., Schmitt, S. and Lingens, F.
    A novel non-heme iron-containing dioxygenase. Chloridazon-catechol dioxygenase from Phenylobacterium immobilis DSM 1986.
    Eur. J. Biochem. 125 : 579-584 (1982). [PMID: 6811270]

[EC created 1984]