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  • Title: The dicyclohexylcarbodiimide-binding protein c of ATP synthase from Escherichia coli is not sufficient to express an efficient H+ conduction.
    Author: Friedl P, Bienhaus G, Hoppe J, Schairer HU.
    Journal: Proc Natl Acad Sci U S A; 1981 Nov; 78(11):6643-6. PubMed ID: 6273880.
    Abstract:
    Bacteriophage Mu was inserted into the unc genes of Escherichia coli. The resulting mutation AS12 had a polar effect on the unc operon: membranes of the mutant AS12 contained the dicyclohexylcarbodiimide-binding protein c and the protein a as sole subunits of the ATP synthase. It was shown by peptide mapping and amino acid analysis of the fragments that protein c from mutant AS12 was identical with the wild-type protein c. The absence of subunit b in mutant AS12 drastically lowered the H+ conduction dependent on the membrane-integrated moiety (F0) of the ATP synthase. This suggests that both subunits b and c are necessary for an efficient expression of H+ conduction.
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