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Ethanol-Induced Perturbations to Planar Lipid Bilayer Structures

We report on the formation of planar lipid bilayer structures on mica where the bilayer contains the phosphocholine 1,2-dioleoyl-sn-phosphatidylcholine (DOPC), cholesterol, sphingomyelin and sulforhodamine-tagged-1,2-dioleoyl-sn-phosphatidylethanolamine (SR-DOPE). Phase separation is seen for the ch...

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Published in:	The journal of physical chemistry. B 2014-01, Vol.118 (2), p.537-546
Main Authors:	Setiawan, Iwan, Blanchard, G. J
Format:	Article
Language:	English
Subjects:	Cholesterol Cholesterol - chemistry Ethanol Ethanol - chemistry Ethyl alcohol Fluorescence Fluorescence Polarization Hydrogen Bonding Imaging Lipid Bilayers - chemistry Lipids Mica Phosphatidylcholines - chemistry Phosphatidylethanolamines - chemistry Sphingomyelins - chemistry Steady state
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description	We report on the formation of planar lipid bilayer structures on mica where the bilayer contains the phosphocholine 1,2-dioleoyl-sn-phosphatidylcholine (DOPC), cholesterol, sphingomyelin and sulforhodamine-tagged-1,2-dioleoyl-sn-phosphatidylethanolamine (SR-DOPE). Phase separation is seen for the cholesterol domains within the bilayer structure, and exposure of this supported bilayer to controlled concentrations of ethanol reveals organizational changes on both the micrometer- and molecular-length scales. We report steady state fluorescence imaging, fluorescence lifetime imaging, and fluorescence anisotropy decay imaging for these bilayers. These data are complementary to existing information on the interactions of lipid bilayers with ethanol and point to subtle but important changes in the molecular-scale organization of these structures.
doi_str_mv	10.1021/jp410305m
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source	American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects	Cholesterol Cholesterol - chemistry Ethanol Ethanol - chemistry Ethyl alcohol Fluorescence Fluorescence Polarization Hydrogen Bonding Imaging Lipid Bilayers - chemistry Lipids Mica Phosphatidylcholines - chemistry Phosphatidylethanolamines - chemistry Sphingomyelins - chemistry Steady state
title	Ethanol-Induced Perturbations to Planar Lipid Bilayer Structures
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