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Membrane protein function and stability has been shown to be dependent on the lipid environment. Recently, we developed a high-throughput computational approach for the prediction of membrane protein/lipid interactions. In the current study, we enhanced this approach with the addition of a new measure of the distortion caused by membrane proteins on a lipid bilayer. This is illustrated by considering the effect of lipid tail length and headgroup charge on the distortion caused by the integral membrane proteins MscS and FLAP, and by the voltage sensing domain from the channel KvAP. Changing the chain length of lipids alters the extent but not the pattern of distortion caused by MscS and FLAP; lipid headgroups distort in order to interact with very similar but not identical regions in these proteins for all bilayer widths investigated. Introducing anionic lipids into a DPPC bilayer containing the KvAP voltage sensor does not affect the extent of bilayer distortion.

Original publication

DOI

10.1080/09687680802446534

Type

Journal article

Journal

Mol Membr Biol

Publication Date

12/2008

Volume

25

Pages

662 - 669

Keywords

5-Lipoxygenase-Activating Proteins, Carrier Proteins, Computer Simulation, Databases, Protein, Escherichia coli Proteins, Ion Channels, Lipid Bilayers, Membrane Proteins, Models, Molecular, Potassium Channels, Protein Interaction Domains and Motifs