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Design of peptides P1-P7. (a) Cartoon showing the proposed mode of helix induction by metal binding to the HCM. The peptides include two pairs of salt bridging side chains (cyan), the HCM motif with His at position i and Cys-Phen at position i+7 (green), and various amino acids incorporated at the i+4 position (red). (b) Sequences of P1-P7
