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 systematic name of this enzyme class is protocatechuate:oxygen 3,4-oxidoreductase (decyclizing). Other names in common use include protocatechuate oxygenase, protocatechuic acid oxidase, protocatechuic 3,4-dioxygenase, and protocatechuic 3,4-oxygenase. This enzyme participates in benzoate degradation via hydroxylation and 2,4-dichlorobenzoate degradation. It employs one cofactor, iron.
This enzyme has been found effective at improving organic fluorophore-stability in single-molecule experiments.[1] Commercial preps of the enzyme isolated from Pseudomonasspp. generally require further purification to remove strong contaminating nuclease activity.
Catechol 1,2- dioxygenase is an enzyme that catalyzes the oxidative ring cleavage of catechol to form cis,cis-muconic acid:
In enzymology, a leucocyanidin oxygenase (EC 1.14.11.19) is an enzyme that catalyzes the chemical reaction
In enzymology, a cholesterol oxidase (EC 1.1.3.6) is an enzyme that catalyzes the chemical reaction
In enzymology, an (S)-2-hydroxy-acid oxidase (EC 1.1.3.15) is an enzyme that catalyzes the chemical reaction
In enzymology, a 2,3-dihydroxybenzoate 2,3-dioxygenase (EC 1.13.11.28) is an enzyme that catalyzes the chemical reaction
In enzymology, a 2,3-dihydroxybenzoate 3,4-dioxygenase (EC 1.13.11.14) is an enzyme that catalyzes the chemical reaction
In enzymology, a 2,5-dihydroxypyridine 5,6-dioxygenase (EC 1.13.11.9) is an enzyme that catalyzes the chemical reaction
In enzymology, a 2-nitropropane dioxygenase (EC 1.13.11.32) is an enzyme that catalyzes the chemical reaction
In enzymology, a 3,4-dihydroxyphenylacetate 2,3-dioxygenase (EC 1.13.11.15) is an enzyme that catalyzes the chemical reaction
3-hydroxyanthranilate 3,4-dioxygenase (EC 1.13.11.6) is an enzyme encoded by the HAAO gene that catalyzes the chemical reaction
Acireductone dioxygenase [iron(II)-requiring] (EC 1.13.11.54) is an enzyme that catalyzes the chemical reaction
Acireductone dioxygenase (Ni2+-requiring) (EC 1.13.11.53) is an enzyme that catalyzes the chemical reaction
Caffeate 3,4-dioxygenase (EC 1.13.11.22) is an enzyme that catalyzes the chemical reaction
In enzymology, a cysteamine dioxygenase (EC 1.13.11.19) is an enzyme that catalyzes the chemical reaction
In enzymology, a gentisate 1,2-dioxygenase (EC 1.13.11.4) is an enzyme that catalyzes the chemical reaction
In enzymology, a hydroxyquinol 1,2-dioxygenase (EC 1.13.11.37) is an enzyme that catalyzes the chemical reaction
In enzymology, a protocatechuate 4,5-dioxygenase (EC 1.13.11.8) is an enzyme that catalyzes the chemical reaction
In enzymology, a stizolobate synthase (EC 1.13.11.29) is an enzyme that catalyzes the chemical reaction
In enzymology, a carboxy-cis,cis-muconate cyclase is an enzyme that catalyzes the chemical reaction
Protocatechuic acid (PCA) is a dihydroxybenzoic acid, a type of phenolic acid. It is a major metabolite of antioxidant polyphenols found in green tea. It has mixed effects on normal and cancer cells in in vitro and in vivo studies. It is produced commercially from vanillin.
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