Described are α/β-peptide mimics of Z-domain scaffold peptides, methods of making them, and methods of using them. The α/β-peptide mimics include β-amino acid residues and, optionally, disulfide bonds to stabilize the conformation of the mimics. The compounds may be truncated as compared to conventional Z-domain scaffold peptides and are resistant to proteolytic degradation due to the presence of β-amino acid residues. The mimics can be made so as to bind selectively to a desired target.
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