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Origin of the nonlinear structural and mechanical properties in oppositely curved lipid mixtures.

Authors :
Gupta, Shivam
Soni, Jatin
Kumar, Awneesh
Mandal, Taraknath
Source :
Journal of Chemical Physics. 10/28/2023, Vol. 159 Issue 16, p1-9. 9p.
Publication Year :
2023

Abstract

Structural and mechanical properties of membranes such as thickness, tail order, bending modulus and curvature energetics play crucial role in controlling various cellular functions that depend on the local lipid organization and membrane reshaping. While behavior of these biophysical properties are well understood in single component membranes, very little is known about how do they change in the mixed lipid membranes. Often various properties of the mixed lipid bilayers are assumed to change linearly with the mole fractions of the constituent lipids which, however, is true for "ideal" mixing only. In this study, using molecular dynamics simulations, we show that structural and mechanical properties of binary lipid mixture change nonlinearly with the lipid mole fractions, and the strength of the nonlinearity depends on two factors - spontaneous curvature difference and locally inhomogeneous interactions between the lipid components. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00219606
Volume :
159
Issue :
16
Database :
Academic Search Index
Journal :
Journal of Chemical Physics
Publication Type :
Academic Journal
Accession number :
173336106
Full Text :
https://doi.org/10.1063/5.0167144