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Information on EC 1.8.2.6 - S-disulfanyl-L-cysteine oxidoreductase

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IUBMB Comments
The enzyme is part of the Sox enzyme system, which participates in a bacterial thiosulfate oxidation pathway that produces sulfate. The enzyme from the bacterium Paracoccus pantotrophus contains a molybdoprotein component and a diheme c-type cytochrome component. The enzyme successively oxidizes the outer sulfur atom in [SoxY protein]-S-disulfanyl-L-cysteine, using three water molecules and forming [SoxY protein]-S-sulfosulfanyl-L-cysteine. During the process, six electrons are transferred to the electron chain via cytochrome c.
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The enzyme appears in viruses and cellular organisms
Reaction Schemes
[SoxY protein]-S-disulfanyl-L-cysteine
+
6
+
3
=
[SoxY protein]-S-sulfosulfanyl-L-cysteine
+
6
+
6
Synonyms
Daro_3133, Daro_3134, SoxCD, sulfite-dehydrogenase, sulfur dehydrogenase, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
[SoxY protein]-S-disulfanyl-L-cysteine + 6 ferricytochrome c + 3 H2O = [SoxY protein]-S-sulfosulfanyl-L-cysteine + 6 ferrocytochrome c + 6 H+
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