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@ARTICLE{Vlijm:132762,
author = {R. Vlijm$^*$ and X. Li and M. Panic and D. Rüthnick and S.
Hata and F. Herrmannsdörfer and T. Kuner and M. Heilemann
and J. Engelhardt$^*$ and S. W. Hell$^*$ and E. Schiebel},
title = {{STED} nanoscopy of the centrosome linker reveals a
{CEP}68-organized, periodic rootletin network anchored to a
{C}-{N}ap1 ring at centrioles.},
journal = {Proceedings of the National Academy of Sciences of the
United States of America},
volume = {115},
number = {10},
issn = {1091-6490},
address = {Washington, DC},
publisher = {National Acad. of Sciences},
reportid = {DKFZ-2018-00415},
pages = {E2246 - E2253},
year = {2018},
note = {DKFZ-ZMBH-Allianz},
abstract = {The centrosome linker proteins C-Nap1, rootletin, and CEP68
connect the two centrosomes of a cell during interphase into
one microtubule-organizing center. This coupling is
important for cell migration, cilia formation, and timing of
mitotic spindle formation. Very little is known about the
structure of the centrosome linker. Here, we used stimulated
emission depletion (STED) microscopy to show that each
C-Nap1 ring at the proximal end of the two centrioles
organizes a rootletin ring and, in addition, multiple
rootletin/CEP68 fibers. Rootletin/CEP68 fibers originating
from the two centrosomes form a web-like, interdigitating
network, explaining the flexible nature of the centrosome
linker. The rootletin/CEP68 filaments are repetitive and
highly ordered. Staggered rootletin molecules (N-to-N and
C-to-C) within the filaments are 75 nm apart. Rootletin
binds CEP68 via its C-terminal spectrin repeat-containing
region in 75-nm intervals. The N-to-C distance of two
rootletin molecules is ∼35 to 40 nm, leading to an
estimated minimal rootletin length of ∼110 nm. CEP68 is
important in forming rootletin filaments that branch off
centrioles and to modulate the thickness of rootletin
fibers. Thus, the centrosome linker consists of a vast
network of repeating rootletin units with C-Nap1 as ring
organizer and CEP68 as filament modulator.},
cin = {E190},
ddc = {000},
cid = {I:(DE-He78)E190-20160331},
pnm = {315 - Imaging and radiooncology (POF3-315)},
pid = {G:(DE-HGF)POF3-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29463719},
pmc = {pmc:PMC5873239},
doi = {10.1073/pnas.1716840115},
url = {https://inrepo02.dkfz.de/record/132762},
}