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@ARTICLE{Mhl:4910,
author = {Möhl, C. and Kirchgeßner, N. and Schäfer, C. and
Küpper, K. and Born, S. and Diez, G. and Goldmann, W.H. and
Merkel, R. and Hoffmann, B.},
title = {{B}ecoming {S}table and {S}trong: {T}he {I}nterplay between
{V}inculin {E}xchange {D}ynamics and {A}dhesion {S}trength
{D}uring {A}dhesion {S}ite {M}aturation},
journal = {Cell Motility and the Cytoskeleton},
volume = {66},
issn = {0886-1544},
address = {Bognor Regis},
publisher = {Wiley},
reportid = {PreJuSER-4910},
pages = {350 - 364},
year = {2009},
note = {Contract grant sponsors: BFHZ, BaCaTec, and DAAD.},
abstract = {The coordinated formation and release of focal adhesions is
necessary for cell attachment and migration. According to
current models, these processes are caused by temporal
variations in protein composition. Protein incorporation
into focal adhesions is believed to be controlled by
phosphorylation. Here, we tested the exchange dynamics of
GFP-vinculin as marker protein of focal adhesions using the
method of Fluorescence Recovery After Photobleaching. The
relevance of the phosphorylation state of the protein, the
age of focal adhesions and the acting force were
investigated. For stable focal adhesions of stationary
keratinocytes, we determined an exchangeable vinculin
fraction of $52\%$ and a recovery halftime of 57 s. Nascent
focal adhesions of moving cells contained a fraction of
exchanging vinculin of $70\%$ with a recovery halftime of 36
s. Upon maturation, mean saturation values and recovery
halftimes decreased to levels of $49\%$ and 42 s,
respectively. Additionally, the fraction of stably
incorporated vinculin increased with cell forces and
decreased with vinculin phosphorylation within these sites.
Experiments on a nonphosphorylatable vinculin mutant
construct at phosphorylation site tyr1065 confirmed the
direct interplay between phosphorylation and exchange
dynamics of adhesion proteins during adhesion site
maturation.},
keywords = {Cell Adhesion: physiology / Cell Movement: physiology /
Cells, Cultured / Fluorescence Recovery After Photobleaching
/ Focal Adhesions: metabolism / Humans / Keratinocytes:
cytology / Keratinocytes: metabolism / Phosphorylation:
physiology / Vinculin: genetics / Vinculin: metabolism /
Vinculin (NLM Chemicals) / J (WoSType)},
cin = {IBN-4},
ddc = {590},
cid = {I:(DE-Juel1)VDB802},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK414},
shelfmark = {Cell Biology},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:19422016},
UT = {WOS:000266466700005},
doi = {10.1002/cm.20375},
url = {https://juser.fz-juelich.de/record/4910},
}