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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pH Range
pH Range on EC 1.17.1.4 - xanthine dehydrogenase
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4 - 11.5
activity range, bell-shaped pH-activity relationships for both the recombinant split variants
4.5 - 9
the enzyme is highly active at pH 5.0-8.0, shows low activity at pH 9.0, and is inactive above
additional information
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Acinetobacter baumannii XDH extends the pH tolerance to pH 11.0
additional information
comparison of the pH dependence of both kred and kred/Kd from reductive half-reaction experiments between wild-type enzyme and mutant E232Q, overview. The ionized Glu232 of wild-type enzyme plays an important role in catalysis by discriminating against the monoanionic form of substrate, effectively increasing the pKa of the substrate by two pH units and ensuring that at physiological pH the neutral form of the substrate predominates in the Michaelis complex