# ⓘ Chloridazon-catechol dioxygenase is an enzyme that catalyzes the chemical reaction 5-amino-4-chloro-2-2.3-dihydroxyphenyl-32H-pyridazinone + O 2 ⇌ {\displaystyl ..

## ⓘ Chloridazon-catechol dioxygenase

Chloridazon-catechol dioxygenase is an enzyme that catalyzes the chemical reaction

5-amino-4-chloro-2-2.3-dihydroxyphenyl-32H-pyridazinone + O 2 ⇌ {\displaystyle \rightleftharpoons } 5-amino-4-chloro-2-2-hydroxymuconoyl-32H-pyridazinone

Thus, the two substrates of this enzyme are 5-amino-4-chloro-2-2.3-dihydroxyphenyl-32H-pyridazinone and oxygen, whereas its product is 5-amino-4-chloro-2-2-hydroxymuconoyl-32H-pyridazinone.

This enzyme belongs to the family of oxidoreductases, specifically those acting on single donors with O 2 as oxidant and incorporation of two atoms of oxygen into the substrate oxygenases. The oxygen incorporated need not be derived from O 2. The systematic name of this enzyme class is 5-amino-4-chloro-2-2.3-dihydroxyphenyl-32H-pyridazinone 1.2-oxidoreductase decyclizing. It employs one cofactor, iron.