Title : Exploring the permeation of fluoroquinolone metalloantibiotics across outer membrane porins by combining molecular dynamics simulations and a porin-mimetic in vitro model.

Pub. Date : 2022 Mar 1

PMID : 34896074






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1 Exploring the permeation of fluoroquinolone metalloantibiotics across outer membrane porins by combining molecular dynamics simulations and a porin-mimetic in vitro model. Fluoroquinolones voltage dependent anion channel 1 Homo sapiens
2 Porin channels are crucial for the permeation of fluoroquinolones across the outer membrane of Gram-negative bacteria and modifications in porin expression are an important mechanism of bacterial resistance. Fluoroquinolones voltage dependent anion channel 1 Homo sapiens
3 Porin channels are crucial for the permeation of fluoroquinolones across the outer membrane of Gram-negative bacteria and modifications in porin expression are an important mechanism of bacterial resistance. Fluoroquinolones voltage dependent anion channel 1 Homo sapiens
4 Molecular dynamics simulations showed that the translocation of the metalloantibiotic through this porin is less favorable than that of free fluoroquinolone, as it presented a much larger free energy barrier to cross the narrow constriction region of the pore. Fluoroquinolones voltage dependent anion channel 1 Homo sapiens
5 Lastly, permeability studies of different fluoroquinolones and their respective copper complexes using a porin-mimetic in vitro model corroborated the lower rate of permeation for the metalloantibiotics relative to the free antibiotics. Fluoroquinolones voltage dependent anion channel 1 Homo sapiens