Figure 15.

(a) Homologous series of peptides differing from one another only in the i+2 residue. For sequences with more than one symmetry-independent structure, only one is shown. (b) Overlay of the type I′ β-turns from the homologous series showing tight overlap in the loop-region and more deviations at the peripheral residues. All loop RMSDs are less than 0.11 Å. For more structural information, see Figure S4.21.