1.17.1.4: xanthine dehydrogenase
This is an abbreviated version!
For detailed information about xanthine dehydrogenase, go to the full flat file.
Word Map on EC 1.17.1.4
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1.17.1.4
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uric
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1.2.1.37
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1.1.1.204
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allopurinol
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environmental protection
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ureide
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1.1.3.22
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medicine
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1.2.3.1
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xanthinuria
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oxypurines
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butyrophilins
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synthesis
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hypouricemic
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agriculture
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biotechnology
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analysis
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nutrition
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molecular biology
- 1.17.1.4
-
uric
-
1.2.1.37
-
1.1.1.204
- allopurinol
- environmental protection
-
ureide
-
1.1.3.22
- medicine
-
1.2.3.1
-
xanthinuria
-
oxypurines
-
butyrophilins
- synthesis
-
hypouricemic
- agriculture
- biotechnology
- analysis
- nutrition
- molecular biology
Reaction
Synonyms
AtXDH1, EC 1.1.1.204, EC 1.2.1.37, IAO1, More, NAD-xanthine dehydrogenase, PaoABC, Retinol dehydrogenase, Rosy locus protein, VvXDH, xanthine dehydrogenase, xanthine dehydrogenase-1, xanthine dehydrogenase-2, xanthine dehydrogenase/oxidase, xanthine oxidoreductase, xanthine-NAD oxidoreductase, xanthine/NAD+ oxidoreductase, xanthine:NAD+ oxidoreductase, XDH, XDH/XO, XDH1, XDH2, XdhC, XOR, YagR, YagS, YagT
ECTree
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Systematic Name
Systematic Name on EC 1.17.1.4 - xanthine dehydrogenase
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xanthine:NAD+ oxidoreductase
Acts on a variety of purines and aldehydes, including hypoxanthine. The mammalian enzyme can also convert all-trans retinol to all-trans-retinoate, while the substrate is bound to a retinoid-binding protein [14]. The enzyme from eukaryotes contains [2Fe-2S], FAD and a molybdenum centre. The mammalian enzyme predominantly exists as the NAD-dependent dehydrogenase (EC 1.17.1.4). During purification the enzyme is largely converted to an O2-dependent form, xanthine oxidase (EC 1.17.3.2). The conversion can be triggered by several mechanisms, including the oxidation of cysteine thiols to form disulfide bonds [2,6,8,15] [which can be catalysed by EC 1.8.4.7, enzyme-thiol transhydrogenase (glutathione-disulfide) in the presence of glutathione disulfide] or limited proteolysis, which results in irreversible conversion. The conversion can also occur in vivo [2,7,15].