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Characterization of single semiflexible filaments under geometric constraints

Köster, S. and Kierfeld, J. and Pfohl, T.. (2008) Characterization of single semiflexible filaments under geometric constraints. European Physical Journal E, 25 (4). pp. 439-449.

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Official URL: http://edoc.unibas.ch/45893/

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Abstract

Confinement effects on single semiflexible macromolecules are of central importance for a fundamental understanding of cellular processes involving biomacromolecules. To analyze the influence of confinement on the fluctuations of semiflexible macromolecules we study individual actin filaments in straight and curved microchannels. We experimentally characterize the segment distributions for fluctuating semiflexible filaments in microchannels as a function of the channel width. Moreover, the effect of channel curvature on the filament fluctuations is investigated. We find quantitative agreement between experimental results, Monte Carlo simulations, and the analytical description. This allows for determination of the persistence length of actin filaments, the deflection length, which characterizes the confinement effects, and the scaling exponents for the segment distribution of semiflexible macromolecules.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Biophysikalische Chemie (Pfohl)
UniBasel Contributors:Pfohl, Thomas
Item Type:Article, refereed
Article Subtype:Research Article
ISSN:1292-8941
e-ISSN:1292-895X
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:12 Dec 2016 11:49
Deposited On:12 Dec 2016 11:49

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