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Schematic representation of the designed peptides. K, KD, and S denote location of L-lysine, D-lysine, and L-serine, respectively. The remaining positions are occupied by L-glutamines, which are not denoted by letters, for greater clarity. The peptide shown in the scheme is PolyQKd-33. The peptide PolyQKd-32 has one less L-Gln in the middle section. The angles between β-strands indicated by dashed lines are arbitrary.
