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EC 1.3.1.1 Details
show Brenda entryEC number
1.3.1.1
Accepted name
dihydropyrimidine dehydrogenase (NAD+)
Reaction
(1) 5,6-dihydrouracil + NAD+ = uracil + NADH + H+;;(2) 5,6-dihydrothymine + NAD+ = thymine + NADH + H+
Other name(s)
dihydropyrimidine dehydrogenase,
dihydrothymine dehydrogenase,
pyrimidine reductase,
thymine reductase,
uracil reductase,
dihydrouracil dehydrogenase (NAD+)
Systematic name
5,6-dihydropyrimidine:NAD+ oxidoreductase
CAS registry number
9026-89-5
Comment
An iron-sulfur flavoenzyme. The enzyme was originally discovered in the uracil-fermenting bacterium, Clostridium uracilicum, which utilizes uracil and thymine as nitrogen and carbon sources for growth [1]. Since then the enzyme was found in additional organisms including Alcaligenes eutrophus [2], Pseudomonas strains [3,4] and Escherichia coli [5,6].
History
created 1961, modified 2011
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1 Oxidoreductases
1.1.1 With NAD+ or NADP+ as acceptor
1.1.3.1 created 1961, deleted 1984 1.1.3.25 created 1986, deleted 2005 1.1.3.26 created 1989, deleted 2002 1.1.3.31 created 1992, deleted 2003 1.1.3.32 created 1999, deleted 2002 1.1.3.33 created 1999, deleted 2002 1.1.3.34 created 1999, deleted 2002 1.1.3.35 created 1999, deleted 2002 1.1.3.36 created 1999, deleted 2002 1.1.99.15 created 1978, deleted 1980 1.1.99.17 created 1982, deleted 2003 1.3.1.23 created 1972, deleted 2005 1.3.1.50 created 1992, deleted 1999 1.3.1.55 created 1999, deleted 2004
