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@ARTICLE{Klacsov:474186,
author = {Klacsová, Mária and Bóta, Attila and Westh, Peter and
Funari, Sergio de Souza and Uhríková, Daniela and
Balgavý, Pavol},
title = {{T}hermodynamic and structural study of {DMPC}–alkanol
systems},
journal = {Physical chemistry, chemical physics},
volume = {23},
number = {14},
issn = {1463-9076},
address = {Cambridge},
publisher = {RSC Publ.},
reportid = {PUBDB-2022-00576},
pages = {8598 - 8606},
year = {2021},
note = {Waiting for fulltext},
abstract = {The thermodynamic and structural behaviors of lamellar
dimyristoylphosphatidylcholine-alkanol (abbreviation
DMPC–CnOH, n = 8–18 is the even number of carbons in the
alkyl chain) systems were studied by using DSC and SAXD/WAXD
methods at a 0–0.8 CnOH : DMPC molar ratio range. Up
to n ≤ 10 a significant biphasic effect depending on the
main transition temperature t$_m$ on the CnOH concentration
was observed. Two breakpoints were revealed: turning point
(TP), corresponding to the minimum, and threshold
concentration (c$_T$), corresponding to the end of the
biphasic tendency. These breakpoints were also observed in
the alkanol concentration dependent change in the enthalpy
of the main transition ΔH$_m$. In the case of CnOHs with n
> 10 we propose a marked shift of TP and c$_T$ to very low
concentrations; consequently, only increase of tm is
observed. A partial phase diagram was constructed for a
pseudo-binary DMPC–C12OH system. We suggest a
fluid–fluid immiscibility of the DMPC–C12OH system above
c$_T$ with a consequent formation of domains with different
C12OH contents. At a constant CnOH concentration, the
effects of CnOHs on ΔH$_m$ and bilayer repeat distance were
found to depend predominantly on the mismatch between CnOH
and lipid chain lengths. Observed effects are suggested to
be underlined by a counterbalancing effect of interchain van
der Waals interactions and headgroup repulsion.},
cin = {DOOR ; HAS-User / FS-PETRA-D},
ddc = {540},
cid = {I:(DE-H253)HAS-User-20120731 /
I:(DE-H253)FS-PETRA-D-20210408},
pnm = {633 - Life Sciences – Building Blocks of Life: Structure
and Function (POF4-633)},
pid = {G:(DE-HGF)POF4-633},
experiment = {EXP:(DE-H253)D-A2-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {33876021},
UT = {WOS:000633043800001},
doi = {10.1039/D0CP04991C},
url = {https://bib-pubdb1.desy.de/record/474186},
}