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J Pept Sci May 1, 2017; 23 (5): 403-409.

Novel short antimicrobial peptide isolated from Xenopus laevis skin.

Zhang Y , Liu S , Li S , Cheng Y , Nie L , Wang G , Lv C , Wei W , Cheng C , Hou F , Hao L .

A rich source of bioactive peptides, including a large number of antimicrobial peptides, has been found in amphibian skin. In this study, a novel short antimicrobial peptide was purified from Xenopus laevis skin and characterised through reversed-phase high-performance liquid chromatography, Edman degradation and matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry. The peptide was composed of six amino acids with a sequence of DEDLDE and thus named X. laevis antibacterial peptide-P2 (XLAsp-P2). Transmission electron microscopy revealed that this peptide showed potential antimicrobial abilities against bacteria by damaging the bacterial cell membrane. XLAsp-P2 maybe inhibit bacterial growth by binding to the microbial genomic DNA. The peptide also exhibited a weak haemolytic activity against rabbit red blood cells. Therefore, XLAsp-P2 is a novel short anionic antibacterial peptide with broad activities. Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd.

PubMed ID: 28299865
Article link: J Pept Sci

Species referenced: Xenopus laevis
Genes referenced: tff3.7