Berlin 2008 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 7: Posters I
BP 7.28: Poster
Montag, 25. Februar 2008, 17:00–19:30, Poster A
Mechanosensitive pattern formation in active cytoskeletal networks — •Volker Schaller1, Ronny Peter1, Falko Ziebert2, and Walter Zimmermann1 — 1Theoretische Physik I, Universität Bayreuth, 95440 Bayreuth, Germany — 2Materials Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, IL 60439, USA
We present a one-dimensional model combining two of the main features of active biopolymer solutions, namely the molecular motor driven active transport of filaments and the (visco-)elastic properties of filament networks held together by crosslinkers or entanglement effects.
It is shown that the pattern forming mechanisms, associated to the motor-mediated transport of filaments, are substantially altered if coupled to a filament network: in case of a permanent network, the long-range clustering of filaments changes either to stationary periodic filament density patterning or to propagating pulses. However if the network is viscoelastic, molecular motor activity can lead to traveling or standing filament density waves[1].
Moreover we investigate the mechanosensivity of pattern formation and the contractive behavior of the network.
[1]R. Peter and V. Schaller and F. Ziebert and W. Zimmermann; Pattern formation in active cytoskeletal networks, Submitted to: New J. Phys.