Figure 2.

Ramachandran plots of the conformational populations of the guest (X) residues. Plots are provided for the peptides in different environments: pure water at 298 K, 8 M urea at 298 K, and pure water at 498 K. The conformational regions are colored by increasing percentage population from gray to black: 0 = white; 0 < gray < 0.05; 0.05 ≤ green < 0.2; 0.2 ≤ blue < 0.4; 0.4 ≤ red < 0.8; 0.8 ≤ black. To see this figure in color, go online.