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231223s2008 xx |||||o 00| ||eng c |
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|a 10.1002/jcc.20974
|2 doi
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|a eng
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| 100 |
1 |
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|a Högberg, Carl-Johan
|e verfasserin
|4 aut
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|a Modification of the CHARMM force field for DMPC lipid bilayer
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|c 2008
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a Date Completed 03.12.2008
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a 2008 Wiley Periodicals, Inc.
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|a The CHARMM force field for DMPC lipids was modified in order to improve agreement with experiment for a number of important properties of hydrated lipid bilayer. The modification consists in introduction of a scaling factor 0.83 for 1-4 electrostatic interactions (between atoms separated by three covalent bonds), which provides correct transgauche ratio in the alkane tails, and recalculation of the headgroup charges on the basis of HF/6-311(d,p) ab-initio computations. Both rigid TIP3P and flexible SPC water models were used with the new lipid model, showing similar results. The new model in a 75 ns simulation has shown a correct value of the area per lipid at zero surface tension, as well as good agreement with the experiment for the electron density, structure factor, and order parameters, including those in the headgroup part of lipids
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Lipid Bilayers
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|a Water
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|a Nikitin, Alexei M
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|a Lyubartsev, Alexander P
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of computational chemistry
|d 1984
|g 29(2008), 14 vom: 15. Nov., Seite 2359-69
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|x 1096-987X
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|g volume:29
|g year:2008
|g number:14
|g day:15
|g month:11
|g pages:2359-69
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|u http://dx.doi.org/10.1002/jcc.20974
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