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The primary amino acid sequence in single letter code of the antibacterial peptides used in this study. The location and linkage of the intramolecular disulfide bonds are shown above or below each relevant sequence. HNP 2, human defensin 2; NP 2, rabbit defensin 2, PG-1, protegrin-1; PC-8, synthetic, linearized variant of PG-1; TP-1, tachyplesin-1; LL-37, antibacterial peptide derived from CAP18 (5). Note that the C-terminal arginine residue of PG-1 and PC-8 is amidated (9).
