Dissection of Factors Affecting the Variability of the Peptide Bond Geometry and Planarity

Figure 3

Average values of bond angles of protein residues in α-helix in the 3° × 3° box centered at (φ, ψ) = (−63°, −43°) (in blue) and in β-sheet in the 15° × 15° box centered at (φ, ψ) = (−120°, 130°) (in red) in the Ramachandran plot. Pro is not reported in the diagram since the observations for this residue are very limited.

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