The carboxyl terminus of the Saccharomyces cerevisiae succinate dehydrogenase membrane subunit, SDH4p, is necessary for ubiquinone reduction and enzyme stability.


The succinate dehydrogenase (SDH) of Saccharomyces cerevisiae is composed of four nonidentical subunits encoded by the nuclear genes SDH1, SDH2, SDH3, and SDH4. The hydrophilic subunits, SDH1p and SDH2p, comprise the catalytic domain involved in succinate oxidation. They are anchored to the inner mitochondrial membrane by two small, hydrophobic subunits… (More)

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