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1.2.7.4: anaerobic carbon-monoxide dehydrogenase

This is an abbreviated version!
For detailed information about anaerobic carbon-monoxide dehydrogenase, go to the full flat file.

Word Map on EC 1.2.7.4

Reaction

CO
+
H2O
+ 2 oxidized ferredoxin =
CO2
+ 2 reduced ferredoxin + 2 H+

Synonyms

acetyl coenzyme A synthase/carbon monoxide dehydrogenase, acetyl-CoA synthase/carbon monoxide dehydrogenase, ACS/CODH, Carbon dioxide/carbon monoxide oxidoreductase, Carbon monoxide dehydrogenase, carbon monoxide dehydrogenase-corrinoid enzyme complex, carbon monoxide dehydrogenase/acetyl-CoA synthase, Carbon monoxide oxidoreductase, Cdh, CO dehydrogenase, CO dehydrogenase complex, CO dehydrogenase complex II, CO dehydrogenase II, CO dehydrogenase/acetyl-CoA synthase, Co-DG, CO-DH, CODH, CODH II, CODH-II, CODH/ACS, CODHACS, CODHase, CODHII, coos, Dehydrogenase, carbon monoxide, EC 1.2.99.2, monoxide dehydrogenase/acetyl-CoA synthase, Ni,Fe-CODH, Ni,Fe-dependent carbon monoxide dehydrogenase, Ni-CODH, Ni-containing carbon monoxide dehydrogenase, Ni-Fe carbon monoxide dehydrogenase II

ECTree

     1 Oxidoreductases
         1.2 Acting on the aldehyde or oxo group of donors
             1.2.7 With an iron-sulfur protein as acceptor
                1.2.7.4 anaerobic carbon-monoxide dehydrogenase

Systematic Name

Systematic Name on EC 1.2.7.4 - anaerobic carbon-monoxide dehydrogenase

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SYSTEMATIC NAME
IUBMB Comments
carbon-monoxide,water:ferredoxin oxidoreductase
This prokaryotic enzyme catalyses the reversible reduction of CO2 to CO. The electrons are transferred to redox proteins such as ferredoxin. In purple sulfur bacteria and methanogenic archaea it catalyses the oxidation of CO to CO2, which is incorporated by the Calvin-Benson-Basham cycle or released, respectively. In acetogenic and sulfate-reducing microbes it catalyses the reduction of CO2 to CO, which is incorporated into acetyl CoA by EC 2.3.1.169, CO-methylating acetyl-CoA synthase, with which the enzyme forms a tight complex in those organisms. The enzyme contains five metal clusters per homodimeric enzyme: two nickel-iron-sulfur clusters called the C-Clusters, one [4Fe-4S] D-cluster; and two [4Fe-4S] B-clusters. In methanogenic archaea additional [4Fe-4S] clusters exist, presumably as part of the electron transfer chain. In purple sulfur bacteria the enzyme forms complexes with the Ni-Fe-S protein EC 1.12.7.2, ferredoxin hydrogenase, which catalyse the overall reaction: CO + H2O = CO2 + H2. cf. EC 1.2.5.3, aerobic carbon monoxide dehydrogenase.