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@ARTICLE{Kostyurina:1049991,
author = {Kostyurina, Ekaterina and Biehl, Ralf and Kruteva,
Margarita and Koutsioumpas, Alexandros and Frielinghaus,
Henrich and Yepuri, Nageshwar Rao and Förster, Stephan and
Allgaier, Jürgen},
title = {{E}xploring the {L}imits of {P}assive {M}acromolecular
{T}ranslocation through {P}hospholipid {M}embranes},
journal = {Biomacromolecules},
volume = {26},
number = {10},
issn = {1525-7797},
address = {Columbus, Ohio},
publisher = {American Chemical Soc.},
reportid = {FZJ-2025-05705},
pages = {6917 - 6926},
year = {2025},
abstract = {Transportation of active macromolecules through cell
membranes is an essential biological process. However, for
hydrophilic macromolecules, the hydrophobic interior of
lipid bilayers suppresses the passive translocation, and
there are only few cases reported. We use alternating
amphiphilic polymers (AAPs) in which the sizes of the
hydrophilic and hydrophobic units can be varied over a broad
range, keeping the polymers water-soluble. For small units,
the macromolecules show a homopolymer-like character. Pulse
field gradient NMR and neutron reflectivity measurements
show that the chains have a high solubility in the membrane
hydrophobic interior that allows the chains to passively
translocate. Increasing the length of the hydrophilic units
leads to more polar AAPs with low membrane solubility and a
reduced translocation speed. If hydrophilic and hydrophobic
moieties are increased in size, the AAPs have a strong
amphiphilic character and adsorb to lipid membranes only
with their hydrophobic units, have a high membrane
concentration, and have an overall fast translocation
kinetics.},
cin = {JCNS-1 / JCNS-4 / JCNS-FRM-II},
ddc = {570},
cid = {I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-4-20201012 /
I:(DE-Juel1)JCNS-FRM-II-20110218},
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)MARIA-20140101},
typ = {PUB:(DE-HGF)16},
doi = {10.1021/acs.biomac.5c01234},
url = {https://juser.fz-juelich.de/record/1049991},
}