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Information on EC 1.8.2.2 - thiosulfate dehydrogenase

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EC Tree
     1 Oxidoreductases
         1.8 Acting on a sulfur group of donors
             1.8.2 With a cytochrome as acceptor
                1.8.2.2 thiosulfate dehydrogenase
IUBMB Comments
The enzyme catalyses the reversible formation of a sulfur-sulfur bond between the sulfane atoms of two thiosulfate molecules, yielding tetrathionate and releasing two electrons. In many bacterial species the enzyme is a diheme c-type cytochrome. In a number of organisms, including Thiomonas intermedia and Sideroxydans lithotrophicus, a second diheme cytochrome (TsdB) acts as the electron acceptor. However, some organisms, such as Allochromatium vinosum, lack TsdB. The electron acceptor in these organisms may be the high-potential iron-sulfur protein (HiPIP).
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Word Map
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The expected taxonomic range for this enzyme is: Bacteria, Eukaryota
Synonyms
thiosulfate dehydrogenase, thiosulfate oxidase, thiosulfate-oxidizing enzyme, tetrathionate synthase, afe_0042, mptsdba, avtsda, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
2 thiosulfate + 2 ferricytochrome c = tetrathionate + 2 ferrocytochrome c + 4 H+
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PATHWAY SOURCE
PATHWAYS
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