Figure 13
Use and overuse of very rare cis-non-Pro peptides. (a) A clear, genuine cis-non-Pro in PDB entry 2ddx at 0.86 Å resolution, flagged by the seagreen trapezoid. (b) Time-course plot of the epidemic overuse of cis-non-Pro peptides. (c) An example of how cis peptides can fit better than trans peptides into patchy, poor electron density at 1.2σ. PDB entry 2j82, 1092 loop. |