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
Sulfur metabolism
Microbial metabolism in diverse environments
Orthology
K05301  
sulfite dehydrogenase
Genes
CVI: 
CV_0159(sorB)
REU: 
AJS: 
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 (1966) 522-534.
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 (1970) 334-43.
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 (1981) 631-622.
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 (1984) 1683-1692.
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 (2000) 13202-12.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
37256-47-6

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