EC 1.13.11.14     
Accepted name: 2,3-dihydroxybenzoate 3,4-dioxygenase
Reaction: 2,3-dihydroxybenzoate + O2 = 3-carboxy-2-hydroxymuconate semialdehyde
Other name(s): o-pyrocatechuate oxygenase; 2,3-dihydroxybenzoate 1,2-dioxygenase; 2,3-dihydroxybenzoic oxygenase; 2,3-dihydroxybenzoate oxygenase; 2,3-dihydroxybenzoate:oxygen 3,4-oxidoreductase (decyclizing)
Systematic name: 2,3-dihydroxybenzoate:oxygen 3,4-oxidoreductase (ring-opening)
References:
1.  Ribbons, D.W. Bacterial oxidation of 2,3-dihydroxybenzoic acid - a new oxygenase. Biochem. J. 99 (1966) 30.
[EC 1.13.11.14 created 1972, modified 1976]