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2-oxoacid:acceptor oxidoreductase, gamma subunit, pyruvate/2-ketoisovalerate family A number of anaerobic and microaerophilic species lack pyruvate dehydrogenase and have instead a four subunit, oxygen-sensitive pyruvate oxidoreductase, with either ferredoxins or flavodoxins (H. pylori) used as the acceptor. Several related four-subunit enzymes may exist in the same species. This model describes the gamma subunit. In Pyrococcus furious, enzymes active on pyruvate and 2-ketoisovalerate share a common gamma subunit.
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Jiyao W et al.(2023). "The conserved domain database in 2023.",