FIG. 2.
Alanine dipeptide with the three dihedral angles labeled: ϕ [C5–N7–C9(α)–C15], ψ [N7–C9(α)–C15–N17], and ω [C1–C5–N7–C9(α)]. Colors are cyan for carbon, blue for nitrogen, white for hydrogen, and red for oxygen.
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