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Langmuir ; 39(32): 11231-11237, 2023 08 15.
Article in English | MEDLINE | ID: mdl-37526639

ABSTRACT

We have studied the kinetics of pore formation in giant unilamellar vesicles (GUV) with the antimicrobial peptide nisin. The role of charged lipid composition in the rate of pore formation by nisin in the vesicle membrane is investigated using fluorescence microscopy. We propose a model and obtain an analytical expression for the variation in the fluorescence intensity of a GUV as a function of time. We find that the analytical equation fits well to the experimental data, and the membrane surface potential can be estimated from the fit parameters. We further show that the formation of multiple pores on the vesicle membrane is affected by the charged lipid composition of the membrane.


Subject(s)
Nisin , Unilamellar Liposomes , Unilamellar Liposomes/chemistry , Nisin/pharmacology , Kinetics , Cell Membrane/metabolism , Lipids
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