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@ARTICLE{Koenig:45561,
author = {Koenig, B. W. and Gawrisch, K.},
title = {{L}ipid ethanol interaction studied by {NMR} on bicelles},
journal = {The journal of physical chemistry / B},
volume = {109},
issn = {1520-6106},
address = {Washington, DC},
publisher = {Soc.},
reportid = {PreJuSER-45561},
pages = {7540 - 7547},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {The interaction of ethanol with phospholipids was studied
in bicelles at a physiologically relevant ethanol
concentration of 20 mM and a lipid content of 14 wt $\%$ by
high-resolution NMR. Transient association of ethanol with
magnetically aligned bicelles imparts a small degree of
anisotropy to the solute. This anisotropy allows detection
of residual (1)H-(1)H and (1)H-(13)C dipolar couplings,
which are superimposed on scalar couplings. Residual (2)H
NMR quadrupole splittings of isotope-labeled ethanol were
measured as well. The analysis of residual tensorial
interactions yielded information on the orientation and
motions of ethanol in the membrane-bound state. The fraction
of phosphatidylcholine-bound ethanol was determined
independently by gas chromatography and NMR. About $4\%$ of
ethanol is bound to phosphatidylcholine at a bicelle
concentration of 14 wt $\%$ at 40 degrees C. Free and bound
ethanol are in rapid exchange. The lifetime of ethanol
association with phosphatidylcholine membranes is of the
order of a few nanoseconds.},
keywords = {Chemistry, Physical: methods / Chromatography, Gas /
Dimyristoylphosphatidylcholine: chemistry / Ethanol:
chemistry / Lipid Bilayers / Lipids: chemistry / Magnetic
Resonance Spectroscopy / Molecular Conformation /
Phosphatidylcholines: chemistry / Phospholipids: chemistry /
Time Factors / Lipid Bilayers (NLM Chemicals) / Lipids (NLM
Chemicals) / Phosphatidylcholines (NLM Chemicals) /
Phospholipids (NLM Chemicals) /
Dimyristoylphosphatidylcholine (NLM Chemicals) / Ethanol
(NLM Chemicals) / J (WoSType)},
cin = {IBI-2},
ddc = {530},
cid = {I:(DE-Juel1)VDB58},
pnm = {Neurowissenschaften},
pid = {G:(DE-Juel1)FUEK255},
shelfmark = {Chemistry, Physical},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:16851866},
UT = {WOS:000228419100088},
doi = {10.1021/jp044980b},
url = {https://juser.fz-juelich.de/record/45561},
}