Dendritic Actin Filament Nucleation Causes Traveling Waves and Patches

Details Dendritic Actin Filament Nucleation Causes Traveling Waves and Patches Dendritic Actin Filament Nucleation Causes Traveling Waves and Patches

2010-05-28

arxiv.org/abs/1005.5314v1

Physics

Biological Physics

10 pages, 4 figures

Scientific paper

The polymerization of actin via branching at a cell membrane containing nucleation-promoting factors is simulated using a stochastic-growth methodology. The polymerized-actin distribution displays three types of behavior: a) traveling waves, b) moving patches, and c) random fluctuations. Increasing actin concentration causes a transition from patches to waves. The waves and patches move by a treadmilling mechanism which does not require myosin II. The effects of downregulation of key proteins on actin wave behavior are evaluated.

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