Sulfite Dehydrogenase

sulfite dehydrogenase
Sulfite dehydrogenase heterotetramer, Paracoccus pantotrophus
Identifiers
EC number	1.8.2.1
CAS number	37256-47-6
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
Search PMC articles PubMed articles NCBI proteins

In enzymology, a sulfite dehydrogenase (EC 1.8.2.1) is an enzyme that catalyzes the chemical reaction

sulfite + 2 ferricytochrome c + H₂O [math]\displaystyle{ \rightleftharpoons }[/math] sulfate + 2 ferrocytochrome c + 2 H⁺

The 3 substrates of this enzyme are sulfite, ferricytochrome c, and H₂O, whereas its 3 products are sulfate, ferrocytochrome c, and H⁺.

This enzyme belongs to the family of oxidoreductases, specifically those acting on a sulfur group of donor with a cytochrome as acceptor. The systematic name of this enzyme class is sulfite:ferricytochrome-c oxidoreductase. Other names in common use include sulfite cytochrome c reductase, sulfite-cytochrome c oxidoreductase, and sulfite oxidase. This enzyme participates in sulfur metabolism.

References

• "Purification and properties of sulfite:cytochrome c oxidoreductase from Thiobacillus novellus". Biochim. Biophys. Acta 128: 522–534. 1966. doi:10.1016/0926-6593(66)90013-0. 
• "Properties and role of sulphite:cytochrome c oxidoreductase purified from Thiobacillus versutus (A2)". J. Gen. Microbiol. 130: 1683–1692. 1984. doi:10.1099/00221287-130-7-1683. 

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