1.8.2.1: sulfite dehydrogenase (cytochrome)
This is an abbreviated version!
For detailed information about sulfite dehydrogenase (cytochrome), go to the full flat file.
Word Map on EC 1.8.2.1
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1.8.2.1
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starkeya
-
novella
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thiosulfate
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paracoccus
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pantotrophus
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molybdoenzyme
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sulfoacetaldehyde
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desulfonation
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chemolithotrophic
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food industry
- 1.8.2.1
-
starkeya
- novella
- thiosulfate
-
paracoccus
- pantotrophus
-
molybdoenzyme
- sulfoacetaldehyde
-
desulfonation
-
chemolithotrophic
- food industry
Reaction
+ + = + 2 ferrocytochrome c + 2 H+
Synonyms
CT1015, dehydrogenase, sulfite, MccACD, Mo-dependent sulfite dehydrogenase, More, multiheme cytochrome c sulfite reductase, SDH, SiR-FP18, SiRA, SO, SOR, SorA, SorAB, SorT, SoxF, sulfate oxidase, sulfite cytochrome c reductase, sulfite dehydrogenase, sulfite oxidase, sulfite oxidoreductase, sulfite reductase, sulfite-cytochrome c oxidoreductase, sulfite-oxidizing molybdenum enzyme, sulfite-oxido-reductase, sulfite: ferricytochrome-c oxidoreductase, sulphite:cytochrome c oxidoreductase
ECTree
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Inhibitors
Inhibitors on EC 1.8.2.1 - sulfite dehydrogenase (cytochrome)
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HPO42-
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18% electrochemical activity at 100 mM inhibitor concentration, at 20 mM 50% inhibition
NO3-
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37% electrochemical activity at 100 mM inhibitor concentration, at 3 mM 50% inhibition
additional information
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CaCl2, MgSO4, ZnSO4, CuSO4, FeCl3, NiCl2 and Na2MoO4 inhibits the reaction by 70% at 0.267 mM, this effect is apparently due to the non-enzymatic oxidation of sulfite with air
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30% electrochemical activity at 100 mM inhibitor concentration, at 50 mM 50% inhibition
p-hydroxymercuribenzoate
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0.667 mM, 86% loss of activity, inhibition is completely reversed by GSH
phosphate
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50 mM, 90% inhibition, uncompetitive with respect to sulfite
SO42-
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product inhibition, mixed-type non-competitive with respect to sulfite
SO42-
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19% electrochemical activity at 100 mM inhibitor concentration, at 15 mM 50% inhibition