Fig. 5

First-order proline motifs from N1 to N”. First-order proline motifs that occur from N1 to N” are shown, with example structures and global and peak-cluster (*) motif data (Abundance/Overrepresentation/Pvalue). Exemplar width is proportional to motif abundance in the corresponding cluster/geometry, while exemplar colour is proportional to overrepresentation. Proline’s rigid pyrrolidine ring favours particular loop geometries that depend on the loop position at which it occurs