EC - Sulfite dehydrogenase (cytochrome)

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IntEnz Enzyme Nomenclature


Accepted name:
sulfite dehydrogenase (cytochrome)
Other names:
sulfite cytochrome c reductase
sulfite oxidase [ambiguous]
sulfite-cytochrome c oxidoreductase
sulfite dehydrogenase [ambiguous]
sorAB (gene names)
Systematic name:
sulfite:ferricytochrome-c oxidoreductase




Associated with cytochrome c-551. cf. EC, sulfite dehydrogenase (quinone).

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0050310
CAS Registry Number: 37256-47-6


  1. Charles, A.M. and Suzuki, I.
    Purification and properties of sulfite:cytochrome c oxidoreductase from Thiobacillus novellus.
    Biochim. Biophys. Acta 128 : 522-534 (1966).
  2. Lu, W.-P. and Kelly, D.P.
    Properties and role of sulphite:cytochrome c oxidoreductase purified from Thiobacillus versutus (A2).
    J. Gen. Microbiol. 130 : 1683-1692 (1984).
  3. Lyric, R. M., Suzuki, I.
    Enzymes involved in the metabolism of thiosulfate by Thiobacillus thioparus. I. Survey of enzymes and properties of sulfite: cytochrome c oxidoreductase.
    Can. J. Biochem. 48 : 334-343 (1970). [PMID: 5438321]
  4. Yamanaka, T., Yoshioka, T. and Kimura, K.
    Purification of sulphite cytocrome c reductase of Thiobacillus novellus and reconstitution of its sulphite oxidase system with the purified constituents.
    Plant and Cell Physiol. 22 : 631-631 (1981).
  5. Kappler, U., Bennett, B., Rethmeier, J., Schwarz, G., Deutzmann, R., McEwan, A. G., Dahl, C.
    Sulfite:Cytochrome c oxidoreductase from Thiobacillus novellus. Purification, characterization, and molecular biology of a heterodimeric member of the sulfite oxidase family.
    J. Biol. Chem. 275 : 13202-13212 (2000). [PMID: 10788424]

[EC created 1972, modified 2016]