catechol 2,3-dioxygenase;
2,3-pyrocatechase;
catechol 2,3-oxygenase;
catechol oxygenase;
metapyrocatechase;
pyrocatechol 2,3-dioxygenase

Oxidoreductases;
Acting on single donors with O2 as oxidant and incorporation of oxygen into the substrate (oxygenases). The oxygen incorporated need not be derived from O2;
With incorporation of two atoms of oxygen

catechol:oxygen 2,3-oxidoreductase (decyclizing)

catechol + O2 = 2-hydroxymuconate semialdehyde [RN:R00816]

R00816;
(other) R04089 R05295 R05404 R05406 R07795

catechol [CPD:C00090];
O2 [CPD:C00007]

Requires FeII. The enzyme from Alcaligenes sp. strain O-1 has also been shown to catalyse the reaction: 2,3-dihydroxybenzenesulfonate + O2 + H2O = 2-hydroxymuconate + bisulfite and has been referred to as 2,3-dihydroxybenzenesulfonate 2,3-dioxygenase. Further work will be necessary to show whether or not this is a distinct enzyme.

1  [PMID:8002948]

Junker F, Field JA, Bangerter F, Ramsteiner K, Kohler HP, Joannou CL, Mason JR, Leisinger T, Cook AM.

Oxygenation and spontaneous deamination of 2-aminobenzenesulphonic acid in Alcaligenes sp. strain O-1 with subsequent meta ring cleavage and spontaneous desulphonation to 2-hydroxymuconic acid.

Biochem. J. 300 ( Pt 2) (1994) 429-36.

Alcaligenes sp.

2  [PMID:8075807]

Junker F, Leisinger T, Cook AM.

3-Sulphocatechol 2,3-dioxygenase and other dioxygenases (EC 1.13.11.2 and EC 1.14.12.-) in the degradative pathways of 2-aminobenzenesulphonic, benzenesulphonic and 4-toluenesulphonic acids in Alcaligenes sp. strain O-1.

Microbiology. 140 ( Pt 7) (1994) 1713-22.

Alcaligenes sp.

3

Hayaishi, O.

Direct oxygenation by O2, oxygenases.

In: Boyer, P.D., Lardy, H. and Myrback, K. (Eds.), The Enzymes, 2nd ed., vol. 8, Academic Press, New York, 1963, p. 353-371.

4  [PMID:13757654]

KOJIMA Y, ITADA N, HAYAISHI O.

Metapyrocatachase: a new catechol-cleaving enzyme.

J. Biol. Chem. 236 (1961) 2223-8.

Pseudomonas sp.

5  [PMID:14087325]

NOZAKI M, KAGAMIYAMA H, HAYAISHI O.

METAPYROCATECHASE. I. PURIFICATION, CRYSTALLIZATION AND SOME PROPERTIES.

Biochem. Z. 338 (1963) 582-90.

Pseudomonas arvilla