3-hydroxyanthranilate 3,4-dioxygenase

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In enzymology, a 3-hydroxyanthranilate 3,4-dioxygenase (EC 1.13.11.6) is an enzyme that catalyzes the chemical reaction

3-hydroxyanthranilate + O₂ $\rightleftharpoons$ 2-amino-3-carboxymuconate semialdehyde

Thus, the two substrates of this enzyme are 3-hydroxyanthranilate and O₂, whereas its product is 2-amino-3-carboxymuconate semialdehyde.

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). The oxygen incorporated need not be derived from O₂. The systematic name of this enzyme class is 3-hydroxyanthranilate:oxygen 3,4-oxidoreductase (decyclizing). Other names in common use include 3-hydroxyanthranilate oxygenase, 3-hydroxyanthranilic acid oxygenase, 3-hydroxyanthranilic oxygenase, 3-hydroxyanthranilic acid oxidase, and 3HAO. This enzyme participates in tryptophan metabolism. It employs one cofactor, iron.

1 Structural studies
2 References
3 External links
- 3.1 Gene Ontology (GO) codes

[edit] Structural studies

As of late 2007, 6 structures have been solved for this class of enzymes, with PDB accession codes 1YFU, 1YFW, 1YFX, 1YFY, 1ZVF, and 2QNK.

[edit] References

IUBMB entry for 1.13.11.6
BRENDA references for 1.13.11.6 (Recommended.)
PubMed references for 1.13.11.6
PubMed Central references for 1.13.11.6
Google Scholar references for 1.13.11.6
DECKER RH, KANG HH, LEACH FR, HENDERSON LM (1961). "Purification and properties of 3-hydroxyanthranilic acid oxidase". J. Biol. Chem. 236: 3076–82. PMID 13884755.
Boyer, P.D., Lardy, H. and Myrback, K. (Eds.), The Enzymes, 2nd ed., vol. 8, Academic Press, New York, 1963, p. 353-371.