F1F0-ATP synthase. Binding of delta subunit to a 22-residue peptide mimicking the N-terminal region of alpha subunit.

Abstract excerpt

The stator in F(1)F(0)-ATP synthase resists strain generated by rotor torque. In Escherichia coli the b(2)delta subunit complex comprises the stator, bound to subunit a in F(0) and to alpha(3)beta(3) hexagon of F(1). Proteolysis and cross-linking had suggested that N-terminal residues of alpha subunit are involved in binding delta. Here we demonstrate that a synthetic peptide consisting of the first 22 residues...

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