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Schematic representation of the geometrical fingerprint: The geometrical fingerprint is characterized by the distance d between the N-terminal C- and the C-terminal N atom and the following three angles: α defined by the line between Cα(N), C(N) and d, β is spanned by the line between N(C), Cα(C) and d, γ is the angle between the two planes A (defined by Cα(N), C(N) and N(C)) and B (Cα(C), C(N) and N(C)).
