Effect of gramicidin S on the dipalmitoylphosphatidyl-glycerol thermotropic phase transition in DPPG/GS systems: A mathematical approach


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Stan C., Cristescu C. P. , Severcan F. , Dorohoi D.

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, vol.457, pp.27-41, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 457
  • Publication Date: 2006
  • Doi Number: 10.1080/15421400500447116
  • Title of Journal : MOLECULAR CRYSTALS AND LIQUID CRYSTALS
  • Page Numbers: pp.27-41

Abstract

We present a mathematical approach to the experimental data recorded via Fourier transform-infrared spectroscopy regarding the influence of the concentration of the antimicrobial peptide gramicidin S (GS) on the thermotropic phase transition of the dipalmitoylphosphatidyl-glycerol (DPPG) lipid bilayer membrane in DPPG/GS systems. The model is based on the influence of the GS concentration on the parameters of a nonlinear damped oscillator, which models the CH2 symmetric stretching band.