Constant pressure and temperature molecular-dynamics simulation of the hydrated diphytanolphosphatidylcholine lipid bilayer

Diphytanolphosphatidylcholine (DPhPC) is a lipid widely used in the study of membrane channel activity. Herein we report the results of a constant temperature (T=25 °C) and constant pressure (p=1 atm) molecular-dynamics (MD) simulation of a hydrated liquid crystal phase DPhPC bilayer. The simulated...

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Veröffentlicht in:The Journal of chemical physics 1998-08, Vol.109 (7), p.2826-2832
Hauptverfasser: Husslein, Thomas, Newns, Dennis M., Pattnaik, Pratap C., Zhong, Qingfeng, Moore, Preston B., Klein, Michael L.
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container_end_page 2832
container_issue 7
container_start_page 2826
container_title The Journal of chemical physics
container_volume 109
creator Husslein, Thomas
Newns, Dennis M.
Pattnaik, Pratap C.
Zhong, Qingfeng
Moore, Preston B.
Klein, Michael L.
description Diphytanolphosphatidylcholine (DPhPC) is a lipid widely used in the study of membrane channel activity. Herein we report the results of a constant temperature (T=25 °C) and constant pressure (p=1 atm) molecular-dynamics (MD) simulation of a hydrated liquid crystal phase DPhPC bilayer. The simulated system consisted of a periodically replicated cell containing 64 lipid and 1792 water molecules. The system was monitored during a trajectory spanning more than one nanosecond. The resulting unconstrained area density per lipid agreed quantitatively with experimental data. The calculated bilayer profile and acyl chain order parameters also compared favorably with x-ray scattering and nuclear magnetic resonance (NMR) data.
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title Constant pressure and temperature molecular-dynamics simulation of the hydrated diphytanolphosphatidylcholine lipid bilayer
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