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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1021/la504771a
|2 doi
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|a pubmed24n0820.xml
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|a DE-627
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|a eng
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|a Kurniawan, James
|e verfasserin
|4 aut
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|a Characterization of solid-supported dipalmitoylphosphatidylcholine membranes containing cholesterol
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 24.11.2015
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|a Date Revised 03.03.2015
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The incorporation of cholesterol into dipalmitoylphosphatidylcholine (DPPC) membranes, even in small amounts, has been shown to significantly alter the properties of the membrane. In this work, force-distance interaction profiles of DPPC membranes containing 8 mol % cholesterol obtained using the surface force apparatus are analyzed in the context of high-resolution structural characterization by atomic force microscopy and neutron reflectometry. The adhesion between the mixed membranes was greater than that for pure DPPC and was variable-depending on the number of defects in the outer membrane leaflets. These defects were only detectable by atomic force microscopy and had an average size of 230 ± 30 nm and 1-5% surface density in the outer leaflet. The adhesion between the membranes monotonically increased as the thickness of the membrane decreased-in direct correlation with the number of defects present (exposed hydrophobic groups) in the membrane contact region. Because of the low diffusion rate of gel-phase membranes, the interaction force profiles were stable and no membrane restructuring was observed
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Lipid Bilayers
|2 NLM
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|a 1,2-Dipalmitoylphosphatidylcholine
|2 NLM
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|a 2644-64-6
|2 NLM
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|a Cholesterol
|2 NLM
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|a 97C5T2UQ7J
|2 NLM
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|a Kuhl, Tonya L
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 31(2015), 8 vom: 03. März, Seite 2527-32
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|x 1520-5827
|7 nnns
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|g volume:31
|g year:2015
|g number:8
|g day:03
|g month:03
|g pages:2527-32
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|u http://dx.doi.org/10.1021/la504771a
|3 Volltext
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