Dihydrouracil oxidase

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In enzymology, a dihydrouracil oxidase (EC is an enzyme that catalyzes the chemical reaction

5,6-dihydrouracil + O2 uracil + H2O2

Thus, the two substrates of this enzyme are 5,6-dihydrouracil and O2, whereas its two products are uracil and H2O2.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-CH group of donor with oxygen as acceptor. The systematic name of this enzyme class is 5,6-dihydrouracil:oxygen oxidoreductase. It employs one cofactor, FMN.


  • IUBMB entry for
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  • Owaki J, Uzura K, Minami Z and Kusai K (1986). "Partial-purification and characterization of dihydrouracil oxidase, a flavoprotein from Rhodotorula glutinis". J. Ferment. Technol. 64: 205&ndash, 210.

External links

The CAS registry number for this enzyme class is 104327-11-9.

Gene Ontology (GO) codes