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- W1964551504 abstract "Abstract Bacterial resistance to conventional antibiotics necessitates the identification of novel leads for infection control. Interference with extracellular phenomena, such as quorum sensing, extracellular DNA integrity and redox active metabolite release, represents a new frontier to control human pathogens such as Pseudomonas aeruginosa and hence reduce mortality. Here we reveal that the extracellular redox active virulence factor pyocyanin produced by P. aeruginosa binds directly to the deoxyribose-phosphate backbone of DNA and intercalates with DNA nitrogenous base pair regions. Binding results in local perturbations of the DNA double helix structure and enhanced electron transfer along the nucleic acid polymer. Pyocyanin binding to DNA also increases DNA solution viscosity. In contrast, antioxidants interacting with DNA and pyocyanin decrease DNA solution viscosity. Biofilms deficient in pyocyanin production and biofilms lacking extracellular DNA show similar architecture indicating the interaction is important in P. aeruginosa biofilm formation." @default.
- W1964551504 created "2016-06-24" @default.
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- W1964551504 date "2015-02-11" @default.
- W1964551504 modified "2023-10-12" @default.
- W1964551504 title "Phenazine virulence factor binding to extracellular DNA is important for Pseudomonas aeruginosa biofilm formation" @default.
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- W1964551504 doi "https://doi.org/10.1038/srep08398" @default.
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