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Lipid-Protein Interactions of Integral Membrane Proteins: A Comparative Simulation Study
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Biophysical Journal
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December 1, 2004
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Copyright informationCopyright Biophysical Society Dec 2004. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
The interactions between membrane proteins and their lipid bilayer environment play important roles in the stability and function of such proteins. Extended (15-20 ns) molecular dynamics simulations have been used to explore the interactions of two membrane proteins with phosphatidylcholine bilayers. One protein (KcsA) is an α-helix bundle and embedded in a palmitoyl oleoyl phosphatidylcholine bilayer; the other (OmpA) is a β-barrel outer-membrane protein and is in a dimyristoyl phosphatidylcholine bilayer. The simulations enable analysis in detail of a number of aspects of lipid-protein interactions. In particular, the interactions of aromatic amphipathic side chains ...
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