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- W1970007783 abstract "Fungi are a newly emerging source of peptide antibiotics with therapeutic potential. Here, we report 17 new fungal defensin-like peptide (fDLP) genes and the detailed characterization of a corresponding synthetic fDLP (micasin) from a dermatophyte in terms of its structure, activity and therapeutic potential. NMR analysis showed that synthetic micasin adopts a hallmark cysteine-stabilized α-helical and β-sheet fold. It was active on both gram-positive and gram-negative bacteria, and importantly it killed two clinical isolates of methicillin-resistant Staphylococcus aureus and the opportunistic pathogen Pseudomonas aeruginosa at low micromolar concentrations. Micasin killed approximately 100% of treated bacteria within 3 h through a membrane nondisruptive mechanism of action, and showed extremely low hemolysis and high serum stability. Consistent with these functional properties, micasin increases survival in mice infected by the pathogenic bacteria in a peritonitis model. Our work represents a valuable approach to explore novel peptide antibiotics from a large resource of fungal genomes." @default.
- W1970007783 created "2016-06-24" @default.
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- W1970007783 date "2012-05-14" @default.
- W1970007783 modified "2023-10-04" @default.
- W1970007783 title "Dermatophytic defensin with antiinfective potential" @default.
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- W1970007783 doi "https://doi.org/10.1073/pnas.1201263109" @default.
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