EC - Carbon-monoxide dehydrogenase (cytochrome b-561)

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IntEnz Enzyme Nomenclature


Accepted name:
carbon-monoxide dehydrogenase (cytochrome b-561)
Other names:
CO dehydrogenase
carbon monoxide oxidase
carbon monoxide oxygenase (cytochrome b-561)
carbon monoxide:methylene blue oxidoreductase
carbon-monoxide dehydrogenase
Systematic name:
carbon monoxide,water:cytochrome b-561 oxidoreductase




Contains molybdopterin cytosine dinucleotide, FAD and [2Fe-2S]-clusters. Oxygen, methylene blue and iodonitrotetrazolium chloride can act as nonphysiological electron acceptors.

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UM-BBD , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0008805
CAS Registry Number: 64972-88-9


  1. Meyer, O., Jacobitz, S. and Krüger, B.
    Biochemistry and physiology of aerobic carbon monoxide-utilizing bacteria.
    FEMS Microbiol. Rev. 39 : 161-179 (1986).
  2. Jacobitz, S. and Meyer, O.
    Removal of CO dehydrogenase from Pseudomonas carboxydovorans cytoplasmic membranes, rebinding of CO dehydrogenase to depleted membranes and restoration of respiratory activities.
    J. Bacteriol. 171 : 6294-6299 (1989). [PMID: 2808305]
  3. Meyer, O. and Schlegel, H.-G.
    Carbon monoxide:methylene blue oxidoreductase from Pseudomonas carboxydovorans.
    J. Bacteriol. 141 : 74-80 (1980). [PMID: 7354006]
  4. Dobbek, H., Gremer, L., Meyer, O. and Huber, R.
    Crystal structure and mechanism of CO dehydrogenase, a molybdo iron-sulfur flavoprotein containing S-selanylcysteine.
    Proc. Natl. Acad. Sci. USA 96 : 8884-8889 (1999). [PMID: 10430865]
  5. Hänzelmann, P., Dobbek, H., Gremer, L., Huber, R. and Meyer, O.
    The effect of intracellular molybdenum in Hydrogenophaga pseudoflava on the crystallographic structure of the seleno-molybdo-iron-sulfur flavoenzyme carbon monoxide dehydrogenase.
    J. Mol. Biol. 301 : 1221-1235 (2000). [PMID: 10966817]

[EC created 1999, modified 2003]