ID   1.17.99.4
DE   Uracil/thymine dehydrogenase.
AN   Uracil dehydrogenase.
AN   Uracil oxidase.
AN   Uracil-thymine oxidase.
CA   (1) Uracil + H(2)O + acceptor = barbiturate + reduced acceptor.
CA   (2) Thymine + H(2)O + acceptor = 5-methylbarbiturate + reduced acceptor.
CC   -!- Forms part of the oxidative pyrimidine-degrading pathway in some
CC       microorganisms, along with EC 3.5.2.1 and EC 3.5.1.95.
CC   -!- Mammals, plants and other microorganisms utilize the reductive
CC       pathway, comprising EC 1.3.1.1 or EC 1.3.1.2, EC 3.5.2.2 and
CC       EC 3.5.1.6, with the ultimate degradation products being an L-amino
CC       acid, NH(3) and CO(2).
CC   -!- Formerly EC 1.1.99.19 and EC 1.2.99.1.
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