IUBMB Enzyme Nomenclature


Accepted name: 2-halobenzoate 1,2-dioxygenase

Reaction: a 2-halobenzoate + NADH + H+ + O2 = catechol + a halide anion + NAD+ + CO2

For diagram of reaction click here and mechanism click here.

Other name(s): 2-chlorobenzoate 1,2-dioxygenase

Systematic name: 2-halobenzoate,NADH:oxygen oxidoreductase (1,2-hydroxylating, dehalogenating, decarboxylating)

Comments: A multicomponent enzyme system composed of a dioxygenase component and an electron transfer component. The latter contains FAD. The enzyme, characterized from the bacterium Burkholderia cepacia 2CBS, has a broad substrate specificity. Substrates include 2-fluorobenzoate, 2-chlorobenzoate, 2-bromobenzoate, and 2-iodobenzoate, which are processed in this order of preference.

Links to other databases: BRENDA, EAWAG-BBD, EXPASY, KEGG, Metacyc, CAS registry number: 125268-83-9


1. Fetzner, S., Mueller, R. and Lingens, F. Degradation of 2-chlorobenzoate by Pseudomonas cepacia 2CBS. Biol. Chem. Hoppe-Seyler 370 (1989) 1173-1182. [PMID: 2610934]

2. Fetzner, S., Muller, R. and Lingens, F. Purification and some properties of 2-halobenzoate 1,2-dioxygenase, a two-component enzyme system from Pseudomonas cepacia 2CBS. J. Bacteriol. 174 (1992) 279-290. [PMID: 1370284]

3. Haak, B., Fetzner, S. and Lingens, F. Cloning, nucleotide sequence, and expression of the plasmid-encoded genes for the two-component 2-halobenzoate 1,2-dioxygenase from Pseudomonas cepacia 2CBS. J. Bacteriol. 177 (1995) 667-675. [PMID: 7530709]

[EC created 1992, modified 2012]

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