Berlin 2015 – scientific programme
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BP: Fachverband Biologische Physik
BP 22: Posters: Cytoskeletal filaments
BP 22.14: Poster
Tuesday, March 17, 2015, 14:00–16:00, Poster A
Contraction dynamics of active actin networks — •Dominic Jourdain1, Anne Bernheim2, and Karsten Kruse1 — 1Universität des Saarlandes, Saarbrücken, Germany — 2Ben Gurion University, Israel
Recent in vitro experiments on actin filaments together with myosin motors reveal characteristic contraction patterns for such networks. The contraction speed increases linearly at first, before it decays exponentially. For asymmetric initial x-y-aspect-ratios, the contraction seems to follow this asymmetry. Using a continuous elastic model for the filaments combined with a stress dependent extra term to take the motor activity into account, we are able to qualitatively reproduce the asymmetric contraction and the contraction speed curves.