KEGG   ENZYME: 1.8.2.1Help
Entry
EC 1.8.2.1                  Enzyme                                 

Name
sulfite dehydrogenase (cytochrome);
sulfite cytochrome c reductase;
sulfite-cytochrome c oxidoreductase;
sulfite oxidase (ambiguous);
sulfite dehydrogenase (ambiguous);
sorAB (gene names)
Class
Oxidoreductases;
Acting on a sulfur group of donors;
With a cytochrome as acceptor
BRITE hierarchy
Sysname
sulfite:ferricytochrome-c oxidoreductase
Reaction(IUBMB)
sulfite + 2 ferricytochrome c + H2O = sulfate + 2 ferrocytochrome c + 2 H+ [RN:R00528]
Reaction(KEGG)
Substrate
sulfite [CPD:C00094];
ferricytochrome c [CPD:C00125];
H2O [CPD:C00001]
Product
sulfate [CPD:C00059];
ferrocytochrome c [CPD:C00126];
H+ [CPD:C00080]
Comment
Associated with cytochrome c-551. The enzyme from the bacterium Starkeya novella contains a molybdopyranopterin cofactor and a smaller monoheme cytochrome c subunit. cf. EC 1.8.5.6, sulfite dehydrogenase (quinone).
History
EC 1.8.2.1 created 1972, modified 2016
Pathway
ec00920  Sulfur metabolism
ec01100  Metabolic pathways
ec01120  Microbial metabolism in diverse environments
Orthology
K05301  sulfite dehydrogenase
Genes
CVI: CV_0159(sorB)
REU: Reut_A3082
AJS: Ajs_0034 Ajs_0035
AZO: azo1141(soxF)
Taxonomy
Reference
1
  Authors
Charles, A.M. and Suzuki, I.
  Title
Purification and properties of sulfite:cytochrome c oxidoreductase from Thiobacillus novellus.
  Journal
Biochim Biophys Acta 128:522-534 (1966)
Reference
2  [PMID:5438321]
  Authors
Lyric RM, Suzuki I
  Title
Enzymes involved in the metabolism of thiosulfate by Thiobacillus thioparus. I. Survey of enzymes and properties of sulfite: cytochrome c oxidoreductase.
  Journal
Can J Biochem 48:334-43 (1970)
Reference
3
  Authors
Yamanaka, T., Yoshioka, T. and Kimura, K.
  Title
Purification of sulphite cytocrome c reductase of Thiobacillus novellus and reconstitution of its sulphite oxidase system with the purified constituents.
  Journal
Plant and Cell Physiol 22:631-622 (1981)
Reference
4
  Authors
Lu, W.-P. and Kelly, D.P.
  Title
Properties and role of sulphite:cytochrome c oxidoreductase purified from Thiobacillus versutus (A2).
  Journal
J Gen Microbiol 130:1683-1692 (1984)
Reference
5  [PMID:10788424]
  Authors
Kappler U, Bennett B, Rethmeier J, Schwarz G, Deutzmann R, McEwan AG, Dahl C
  Title
Sulfite:Cytochrome c oxidoreductase from Thiobacillus novellus. Purification, characterization, and molecular biology of a heterodimeric member of the sulfite  oxidase family.
  Journal
J Biol Chem 275:13202-12 (2000)
DOI:10.1074/jbc.275.18.13202
Other DBs
ExplorEnz - The Enzyme Database: 1.8.2.1
IUBMB Enzyme Nomenclature: 1.8.2.1
ExPASy - ENZYME nomenclature database: 1.8.2.1
BRENDA, the Enzyme Database: 1.8.2.1
CAS: 37256-47-6

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