Hydrogensulfite reductase
In enzymology, a hydrogensulfite reductase (EC 1.8.99.3) is an enzyme that catalyzes the chemical reaction
- trithionate + acceptor + 2 H2O + OH- 3 bisulfite + reduced acceptor
| hydrogensulfite reductase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 1.8.99.3 | ||||||||
| CAS number | 9059-42-1 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
The 4 substrates of this enzyme are trithionate, acceptor, H2O, and OH-, whereas its two products are bisulfite and reduced acceptor.
This enzyme belongs to the family of oxidoreductases, specifically those acting on a sulfur group of donors with other acceptors. The systematic name of this enzyme class is trithionate:acceptor oxidoreductase. Other names in common use include bisulfite reductase, dissimilatory sulfite reductase, desulfoviridin, desulforubidin, desulfofuscidin, dissimilatory-type sulfite reductase, and trithionate:(acceptor) oxidoreductase. It has 4 cofactors: iron, sulfur, siroheme, and iron-sulfur.
References
- Hatchikian EC, Zeikus JG (1983). "Characterization of a new type of dissimilatory sulfite reductase present in Thermodesulfobacterium commune". J. Bacteriol. 153 (3): 1211–20. PMC 221765. PMID 6826522.
- Lee JP, Yi CS, LeGall J, Peck HD Jr (1973). "Isolation of a new pigment, desulforubidin, from Desulfovibrio desulfuricans (Norway strain) and its role in sulfite reduction". J. Bacteriol. 115 (1): 453–5. PMC 246260. PMID 4717523.
- Trudinger PA (1970). "Carbon monoxide-reacting pigment from Desulfotomaculum nigrificans and its possible relevance to sulfite reduction". J. Bacteriol. 104 (1): 158–70. PMC 248196. PMID 5473884.
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