Tags: Enzyme.
In enzymology a protocatechuate 34-dioxygenase (EC 1.13.11.3) is an enzyme that catalyzes the chemical reaction34-dihydroxybenzoate + O2 3-carboxy-ciscis-muconateThus the two substrates of this enzyme are 34-dihydroxybenzoate (protocatechuic acid) and O2 whereas its product is 3-carboxy-ciscis-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).