Figure 1
The average τ angle per residue type as a function of resolution (from top to bottom, ≥2.5, 2.0–2.5, 1.5–2.0, 1.0–1.5 and <1.0 Å) and secondary structure (red, β-sheet; green, loop; blue, α-helix). The pink tick marks on the horizontal axis indicate the EH values (Engh & Huber, 2001) for Gly (G), Pro (P) and the 18 other amino-acid types (18). |