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Total energy difference in atomic units (a.u.) of Gly (top panel) and Ala (bottom panel) conformers. Energies of all conformers were normalized with respect to the energies of β-strand C5 conformers (black triangles). Relative energies of statistical coils are depicted as black squares, 310-helices as red squares, α-helices as blue circles, and PPII helix of Ala2 as green circle.
