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    ARTICLE

    Antibacterial activity of lactose-binding lectins from Bufo arenarum skin

    A. Sánchez Riera, A. Daud, A. Gallo, S. Genta, M. Aybar, S. Sánchez

    BIOCELL, Vol.27, No.1, pp. 37-46, 2003, DOI:10.32604/biocell.2003.27.037

    Abstract Amphibians respond to microbial infection through cellular and humoral defense mechanisms such as antimicrobial protein secretion. Most humoral defense proteins are synthetized in the skin. In this study we isolated two β-galactoside-binding lectins with molecular weights of 50 and 56 KDa from the skin of Bufo arenarum. These lectins have significant hemagglutination activity against trypsinized rabbit erythrocytes, which was inhibited by galactose-containing saccharides. They are water-soluble and independent of the presence of calcium. The antimicrobial analysis for each lectin was performed. At µmolar concentration lectins show strong bacteriostatic activity against Gram negative bacteria (Escherichia coli K12 4100 More >

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