Novel antimicrobial peptides from skin secretion of the European frog Rana esculenta

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Abstract

Three antimicrobial peptides were isolated from skin secretion of the European frog, Rana esculenta. Two of them show similarity to brevinin-1 and brevinin-2, respectively, two antimicrobial peptides recently isolated from a Japanese frog [Morikawa, N., Hagiwara, K. and Nakajima, T. (1992) Biochem. Biophys. Res. Commun. 189, 184-190]. The third one, named esculentin, is 46 residues long and represents a different type of peptide. All these peptides have as a common motif an intramolecular disulfide bridge located at the COOH-terminal end. The peptides from R. esculenta show distinctive antibacterial activity against representative Gram-negative and Gram-positive bacterial species. In particular, esculentin is the most active against Staphylococcus aureus, and has a much lower hemolytic activity. © 1993.

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Simmaco, M., Mignogna, G., Barra, D., & Bossa, F. (1993). Novel antimicrobial peptides from skin secretion of the European frog Rana esculenta. FEBS Letters, 324(2), 159–161. https://doi.org/10.1016/0014-5793(93)81384-C

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