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@ARTICLE{Ravichandran:837824,
author = {Ravichandran, Arvind and Saggiorato, Guglielmo and Auth,
Thorsten and Gompper, Gerhard and Vliegenthart, Gerrit},
title = {{E}nhanced {D}ynamics of {C}onfined {C}ytoskeletal
{F}ilaments {D}riven by {A}symmetric {M}otors},
journal = {Biophysical journal},
volume = {113},
number = {5},
issn = {0006-3495},
address = {Cambridge, Mass.},
publisher = {Cell Press},
reportid = {FZJ-2017-06608},
pages = {1121 - 1132},
year = {2017},
abstract = {Cytoskeletal filaments and molecular motors facilitate the
micron-scale force generation necessary for the distribution
of organelles and the restructuring of the cytoskeleton
within eukaryotic cells. Although the mesoscopic structure
and the dynamics of such filaments have been studied in
vitro and in vivo, their connection with filament
polarity-dependent motor-mediated force generation is not
well understood. Using 2D Brownian dynamics simulations, we
study a dense, confined mixture of rigid microtubules (MTs)
and active springs that have arms that cross-link
neighboring MT pairs and move unidirectionally on the
attached MT. We simulate depletion interactions between MTs
using an attractive potential. We show that dimeric motors,
with a motile arm on only one of the two MTs, produce large
polarity-sorted MT clusters, whereas tetrameric motors, with
motile arms on both microtubules, produce bundles.
Furthermore, dimeric motors induce, on average, higher
velocities between antialigned MTs than tetrameric motors.
Our results, where MTs move faster near the confining wall,
are consistent with experimental observations in Drosophila
oocytes where enhanced microtubule activity is found close
to the confining plasma membrane.},
cin = {ICS-2 / IAS-2 / JARA-HPC},
ddc = {570},
cid = {I:(DE-Juel1)ICS-2-20110106 / I:(DE-Juel1)IAS-2-20090406 /
$I:(DE-82)080012_20140620$},
pnm = {552 - Engineering Cell Function (POF3-552) / Hydrodynamics
of Active Biological Systems $(jiff26_20110501)$},
pid = {G:(DE-HGF)POF3-552 / $G:(DE-Juel1)jiff26_20110501$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000410462300015},
pubmed = {pmid:28877494},
doi = {10.1016/j.bpj.2017.07.016},
url = {https://juser.fz-juelich.de/record/837824},
}