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A novel antimicrobial peptide from Bufo bufo gargarizans

, : A novel antimicrobial peptide from Bufo bufo gargarizans. Biochemical and Biophysical Research Communications 218(1): 408-413

A potent and structurally novel antimicrobial peptide was isolated and Characterized from the stomach tissue of Bufo bufo gargarizans, an Asian toad. The 39-amino acid peptide, named buforin I, was purified to homogeneity by heparin-affinity column and reverse-phase HPLC. The amino acid sequence of buforin I was identical in 37 of 39 amino-terminal residues of Xenopus histone H2A. The buforin I showed strong antimicrobial activities in vitro against a broad-spectrum of microorganisms and was found to be more potent than magainin 2. In addition, a 21-amino acid peptide, named buforin II, which was derived from buforin I, showed more potent antimicrobial activities than buforin I.


PMID: 8573171

DOI: 10.1006/bbrc.1996.0071

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