ENZYME entry: EC 1.8.2.2
Accepted Name |
thiosulfate dehydrogenase.
|
Alternative Name(s) |
tetrathionate synthase. |
Reaction catalysed |
2 Fe(III)-[cytochrome c] + 2 thiosulfate <=> 2 Fe(II)-[cytochrome c] + 2 H(+) + tetrathionate |
Comment(s) |
- The enzyme catalyzes 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).
|
Cross-references |
BRENDA | 1.8.2.2 |
EC2PDB | 1.8.2.2 |
ExplorEnz | 1.8.2.2 |
PRIAM enzyme-specific profiles | 1.8.2.2 |
KEGG Ligand Database for Enzyme Nomenclature | 1.8.2.2 |
IUBMB Enzyme Nomenclature | 1.8.2.2 |
IntEnz | 1.8.2.2 |
MEDLINE | Find literature relating to 1.8.2.2 |
MetaCyc | 1.8.2.2 |
Rhea expert-curated reactions | 1.8.2.2 |
UniProtKB/Swiss-Prot |
|
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