C' Gln capping of α
turns. Several examples are found in the PDB of C-capping interactions involving C' Gln in the αR conformation. Carbons for the αL-turn are in orange, others are in green. Sidechain atoms are shown for the capping residues only. Structures shown are: 2J6L_A 297-301, 1A4S_A 291-295 and 1EZ0_A 283-287.