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@ARTICLE{Oszlanczi:55820,
author = {Oszlanczi, E. and Bota, A. and Klumpp, E.},
title = {{L}ayer formations in the bacteria-membrane mimetic
{DPPE}-{DPPG}/water system induced by sulfadiazine},
journal = {Biophysical chemistry},
volume = {125},
issn = {0301-4622},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-55820},
pages = {334 - 340},
year = {2007},
note = {Record converted from VDB: 12.11.2012},
abstract = {The effect of the frequently used antibiotic sulfadiazine
(SD) was studied on a bacteria membrane mimetic model system
by using differential scanning calorimetric (DSC), small-
and wide-angle X-ray scattering (SWAXS) and freeze-fracture
methods. The membrane model system consisted of
dipalmitoylphosphatidylethanolamine (DPPE, 0.8 molar ratio)
and dipalmitoylphosphatidylglycerol (DPPG, 0.2 molar ratio).
The SD molar ratio (relative to the lipids) was varied
between 10(-3) and 1. In the presence of SD, two transitions
between the gel and liquid crystalline phases appear at 60.5
degrees C and about at 65 degrees C. In the temperature
domain of the gel phase, the subcell of the chain packing is
strongly temperature dependent indicating the increased
dominance of the hydration forces during the first
transition and the location of SD molecules in the
neighbourhood of the polar lipid head groups. The second
transition is accompanied by the changes in the
nanometer-scale layer arrangements observed by SAXS and in
the mum-scale morphology observed by freeze-fracture. Above
the temperature of the second transition, the SD-induced
metastable structures undergo further formations to produce
a more homogeneous state favoured by the geometrical packing
of the cylindrical-shaped lipid molecules.},
keywords = {Bacteria: ultrastructure / Calorimetry, Differential
Scanning / Cell Membrane: chemistry / Freeze Fracturing /
Models, Biological / Phase Transition /
Phosphatidylethanolamines / Phosphatidylglycerols /
Sulfadiazine / Temperature / Water / X-Ray Diffraction /
Phosphatidylethanolamines (NLM Chemicals) /
Phosphatidylglycerols (NLM Chemicals) /
1,2-dipalmitoyl-3-phosphatidylethanolamine (NLM Chemicals) /
1,2-dipalmitoylphosphatidylglycerol (NLM Chemicals) /
Sulfadiazine (NLM Chemicals) / Water (NLM Chemicals) / J
(WoSType)},
cin = {ICG-4},
ddc = {540},
cid = {I:(DE-Juel1)VDB793},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Biochemistry $\&$ Molecular Biology / Biophysics /
Chemistry, Physical},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:17046146},
UT = {WOS:000244219500013},
doi = {10.1016/j.bpc.2006.09.008},
url = {https://juser.fz-juelich.de/record/55820},
}