Bioactivity improvement via display of the hydrophobic core of HYD1 in a cyclic β-hairpin-like scaffold, MTI-101.

HYD1 is an all D-amino acid linear 10-mer peptide that was discovered by one-bead-one-compound screening. HYD1 has five hydrophobic amino acids flanked by polar amino acids. Alanine scanning studies showed that alternating hydrophobic amino acid residues and N- and C-terminal lysine side chains were contributors to the biological activity of the linear 10-mer analogs.