ID 1.13.11.14 DE 2,3-dihydroxybenzoate 3,4-dioxygenase. AN 2,3-dihydroxybenzoic oxygenase. AN o-pyrocatechuate oxygenase. CA 2,3-dihydroxybenzoate + O2 = 2-hydroxy-3-(3-oxoprop-1-enyl)but-2- CA enedioate + H(+). //