Three dimensional solution structures.

<p>Superposition of backbone atoms (N, C^α and C') of the twenty lowest energy structures of (A) peptide <b>1 m</b>, (B) peptide <b>3</b> and (C) peptide <b>4 m</b>. Representative helical conformations of the peptides with side chain dispositions are shown for peptide <b>1 m</b> (left panel), peptide <b>3</b> (middle panel) and peptide <b>4 m</b> (right panel). Electrostatic potential surface of peptide <b>1 m</b> (left panel), peptide <b>3</b> (middle panel) and peptide <b>4 m</b> (right panel). The positively charged, neutral and negatively charged amino acid residues are indicated by blue, white and red, respectively. These images were produced using the program Chimera. The atomic coordinates of ensembles of peptides, peptides <b>1 m</b>, <b>3</b>, and <b>4 m</b>, are deposited under PDB accession codes 2LQ0, 2LQ1 and 2LQ2, respectively.