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- W2082578045 abstract "Three antimicrobial peptides derived from bovine milk proteins were examined with regard to penetration into insoluble monolayers formed with 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) or 1,2-dipalmitoyl-sn-glycero-3-phospho-rac-(1-glycerol) sodium salt (DPPG). Effects on surface pressure (Π) and electric surface potential (ΔV) were measured, Π with a platinum Wilhelmy plate and ΔV with a vibrating plate. The penetration measurements were performed under stationary diffusion conditions and upon the compression of the monolayers. The two type measurements showed greatly different effects of the peptide-lipid interactions. Results of the stationary penetration show that the peptide interactions with DPPC monolayer are weak, repulsive, and nonspecific while the interactions with DPPG monolayer are significant, attractive, and specific. These results are in accord with the fact that antimicrobial peptides disrupt bacteria membranes (negative) while no significant effect on the host membranes (neutral) is observed. No such discrimination was revealed from the compression isotherms. The latter indicate that squeezing the penetrant out of the monolayer upon compression does not allow for establishing the penetration equilibrium, so the monolayer remains supersaturated with the penetrant and shows an under-equilibrium orientation within the entire compression range, practically." @default.
- W2082578045 created "2016-06-24" @default.
- W2082578045 creator A5023184199 @default.
- W2082578045 creator A5029659240 @default.
- W2082578045 creator A5055080978 @default.
- W2082578045 date "2013-01-01" @default.
- W2082578045 modified "2023-10-09" @default.
- W2082578045 title "Penetration of Milk-Derived Antimicrobial Peptides into Phospholipid Monolayers as Model Biomembranes" @default.
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- W2082578045 doi "https://doi.org/10.1155/2013/914540" @default.
- W2082578045 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3877611" @default.