Catechol dioxygenases are
metalloprotein enzymes that carry out the oxidative cleavage of
catechols. This class of enzymes incorporate
dioxygen into the
substrate (biochemistry). Catechol dioxygenases belong to the class of
oxidoreductases and have several different substrate specificities, including catechol 1,2-dioxygenase , catechol 2,3-dioxygenase , and protocatechuate 3,4-dioxygenase . The active site of catechol dioxygenases most frequently contains
iron, but
manganese-containing forms are also known.