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Non-Gaussian curvature distribution of actin-propelled biomimetic colloid trajectories

Title data

Schmidt, Stephan ; van der Gucht, Jasper ; Biesheuvel, P. Maarten ; Weinkamer, Richard ; Helfer, Emmanuele ; Fery, Andreas:
Non-Gaussian curvature distribution of actin-propelled biomimetic colloid trajectories.
In: European Biophysics Journal with Biophysics Letters. Vol. 37 (2008) Issue 8 . - pp. 1361-1366.
ISSN 1432-1017
DOI: https://doi.org/10.1007/s00249-008-0340-x

Official URL: Volltext

Abstract in another language

We analyze the motion of colloids propelled by a comet-like tail of polymerizing actin filaments. The curvature of the particle trajectories deviates strongly from a Gaussian distribution, implying that the underlying microscopic processes are fluctuating in a non-independent manner. Trajectories for beads of different size all showed the same non-Gaussian behavior, while the mean curvature decreased weakly with size. A stochastic simulation that includes nucleation, force-dependent dissociation, growth, and capping of filaments, shows that the non-Gaussian curvature distribution can be explained by a positive feedback mechanism in which attached chains under higher tension are more likely to snap.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Physical Chemistry II - Univ.-Prof. Dr. Andreas Fery
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 08 Dec 2014 13:00
Last Modified: 09 Feb 2015 14:32
URI: https://eref.uni-bayreuth.de/id/eprint/4011