TY  - JOUR
AU  - Romanowska, M.
AU  - Hinsch, H.
AU  - Kirchgeßner, N.
AU  - Giesen, M.
AU  - Degawa, M.
AU  - Hoffmann, B.
AU  - Frey, E.
AU  - Merkel, R.
TI  - Direct observation of the tube model in F-actin solutions: Tube dimensions and curvatures
JO  - epl
VL  - 86
SN  - 0302-072X
CY  - Les Ulis
PB  - EDP Sciences
M1  - PreJuSER-3838
SP  - 26003
PY  - 2009
N1  - We thank I. LAUTER, IBN-4, for insightful discussions of the manuscript and control measurements. EF and HH acknowledge support from the DFG through SFB 486, from the German Excellence Initiative via the NIM program, and from the Elite Network of Bavaria through the NBT program. MD is grateful for support from the Alexander von Humboldt Foundation.
AB  - Mutual uncrossability of polymers generates topological constraints on their conformations and dynamics, which are generally described using the tube model. We imaged confinement tubes for individual polymers within a F-actin solution by sampling over many successive micrographs of fluorescently labeled probe filaments. The resulting average tube width shows the predicted scaling behavior. Unexpectedly, we found an exponential distribution of tube curvatures which is attributed to transient entropic trapping in network void spaces. Copyright (C) EPLA, 2009
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000266414100022
DO  - DOI:10.1209/0295-5075/86/26003
UR  - https://juser.fz-juelich.de/record/3838
ER  -