Oxidoreductases;
Acting on a sulfur group of donors;
With a cytochrome as acceptor
BRITE hierarchy

[SoxY protein]-S-disulfanyl-L-cysteine:cytochrome-c oxidoreductase

[SoxY protein]-S-disulfanyl-L-cysteine + 6 ferricytochrome c + 3 H2O = [SoxY protein]-S-sulfosulfanyl-L-cysteine + 6 ferrocytochrome c + 6 H+ [RN:R11971]

R11971
Reaction

[SoxY protein]-S-disulfanyl-L-cysteine [CPD:C21814];
ferricytochrome c [CPD:C00125];
H2O [CPD:C00001]

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.

EC 1.8.2.6 created 2018

1  [PMID:11425697]

2  [PMID:15865447]

3  [PMID:28257465]