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Regular NOESY contacts between HA and HN atoms of nonadjacent residues of peptide 27 (A). Contacts between i - i + 2, i - i + 3 and i - i + 4 are shown in green, blue and pink, respectively. Averaged structure of peptide 27 calculated on the basis of NMR-derived restraints shown in stick representation (B) and superimposition of 10 lowest energy structures (C). Green dotted lines represent hydrogen bonds.
