Antibacterial or antifungal peptides and antibacterial or antifungal agents

摘要

PROBLEM TO BE SOLVED: To provide a low molecular weight peptide having strong antibacterial or antifungal activity independent of salt concentration and having extremely low toxicity to eukaryotic cells, and an antibacterial or antifungal drug using the same. SOLUTION: The following peptides (a), (b) or (c), derivatives thereof or salts thereof. (a) A peptide containing a specific amino acid sequence. (b) A peptide containing an amino acid sequence in which one or several amino acids are deleted, substituted, or added in a specific amino acid sequence, and which has antibacterial or antifungal activity. (c) A peptide containing an amino acid sequence having 80% or more identity with a specific amino acid sequence and having antibacterial or antifungal activity. [Selection diagram] None