A theoretical study of lipid-protein interactions in bilayers

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Abstract

We present a theoretical study of the effect of different types of lipid-protein interactions on the thermodynamic properties of protein-containing lipid bilayers. The basis of this work is a theoretical model for pure lipid bilayer phase transitions developed earlier by Scott. Simple assumptions on the nature of the lipid conformations near a protein strongly affect the predicted properties of the model. Here we consider (a) random protein-lipid contacts, (b) enhanced contact between protein and lipid with a number of gauche bonds, and (c) enhanced contact between protein and all-trans but tilted lipid chains. Comparison of predicted results with experimental data seems to favor point c above but, by itself point c does not work well at larger protein concentrations. The results are discussed in the light of spectroscopic data, lipid-protein (plus annular lipid) miscibility, and interprotein forces. © 1983, The Biophysical Society. All rights reserved.

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Scott, H. L., & Coe, T. J. (1983). A theoretical study of lipid-protein interactions in bilayers. Biophysical Journal, 42(3), 219–224. https://doi.org/10.1016/S0006-3495(83)84389-6

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