Oxidoreductases;
Acting on the aldehyde or oxo group of donors;
With a quinone or similar compound as acceptor
BRITE hierarchy

carbon-monoxide,water:quinone oxidoreductase

CO + a quinone + H2O = CO2 + a quinol [RN:R11168]

R11168
Reaction

CO [CPD:C00237];
quinone [CPD:C15602];
H2O [CPD:C00001]

This enzyme, found in carboxydotrophic bacteria, catalyses the oxidation of CO to CO2 under aerobic conditions. The enzyme contains a binuclear Mo-Cu cluster in which the copper is ligated to a molybdopterin center via a sulfur bridge. The enzyme also contains two [2Fe-2S] clusters and FAD, and belongs to the xanthine oxidoreductase family. The CO2 that is produced is assimilated by the Calvin-Benson-Basham cycle, while the electrons are transferred to a quinone via the FAD site, and continue through the electron transfer chain to a dioxygen terminal acceptor [5]. cf. EC 1.2.7.4, anaerobic carbon monoxide dehydrogenase.

EC 1.2.5.3 created 2016