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The proposed approximate analytical solution of the PE equation, Eqs. 11, 9, for all pairs of atoms in the four conformations of alanine decapeptide shown in Fig. 6. Each point in the plot corresponds to the Ψ value computed for a pair of charges in one of the structures; results from all four structures are combined here into one plot. The canonical GB formula Ψ = exp ( − 0.25ξ) is also shown for reference (purple line).
