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@ARTICLE{deSantis:908575,
author = {de Santis, Augusta and Scoppola, Ernesto and Ottaviani,
Maria Francesca and Koutsioubas, Alexandros and Barnsley,
Lester C. and Paduano, Luigi and D’Errico, Gerardino and
Russo Krauss, Irene},
title = {{O}rder vs. {D}isorder: {C}holesterol and {O}mega-3
{P}hospholipids {D}etermine {B}iomembrane {O}rganization},
journal = {International journal of molecular sciences},
volume = {23},
number = {10},
issn = {1422-0067},
address = {Basel},
publisher = {Molecular Diversity Preservation International},
reportid = {FZJ-2022-02699},
pages = {5322 -},
year = {2022},
abstract = {Lipid structural diversity strongly affects biomembrane
chemico-physical and structural properties in addition to
membrane-associated events. At high concentrations,
cholesterol increases membrane order and rigidity, while
polyunsaturated lipids are reported to increase disorder and
flexibility. How these different tendencies balance in
composite bilayers is still controversial. In this study,
electron paramagnetic resonance spectroscopy, small angle
neutron scattering, and neutron reflectivity were used to
investigate the structural properties of
cholesterol-containing lipid bilayers in the fluid state
with increasing amounts of polyunsaturated omega-3 lipids.
Either the hybrid
1-stearoyl-2-docosahexaenoyl-sn-glycero-3-phosphocholine or
the symmetric
1,2-docosahexaenoyl-sn-glycero-3-phosphocholine were added
to the mixture of the naturally abundant
1-palmitoyl-2-oleyl-sn-glycero-3-phosphocholine and
cholesterol. Our results indicate that the hybrid and the
symmetric omega-3 phospholipids affect the microscopic
organization of lipid bilayers differently. Cholesterol does
not segregate from polyunsaturated phospholipids and,
through interactions with them, is able to suppress the
formation of non-lamellar structures induced by the
symmetric polyunsaturated lipid. However, this
order/disorder balance leads to a bilayer whose structural
organization cannot be ascribed to either a liquid ordered
or to a canonical liquid disordered phase, in that it
displays a very loose packing of the intermediate segments
of lipid chains.},
cin = {JCNS-FRM-II / MLZ / JCNS-4},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
I:(DE-Juel1)JCNS-4-20201012},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4) / 632 - Materials – Quantum, Complex and
Functional Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)KWS1-20140101 / EXP:(DE-MLZ)MARIA-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {35628128},
UT = {WOS:000802443900001},
doi = {10.3390/ijms23105322},
url = {https://juser.fz-juelich.de/record/908575},
}