Instrinsic oscillations of treadmilling microtubules in a motor bath

Details Instrinsic oscillations of treadmilling microtubules in a motor bath Instrinsic oscillations of treadmilling microtubules in a motor bath

2011-09-16

arxiv.org/abs/1109.3568v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figs

Scientific paper

We analyse the dynamics of overlapping antiparallel treadmilling microtubules in the presence of crosslinking processive motor proteins that counterbalance an external force. We show that coupling the force-dependent velocity of motors and the kinetics of motor exchange with a bath in the presence of treadmilling leads generically to oscillatory behavior. In addition we show that coupling the polymerization kinetics to the external force through the kinetics of the crosslinking motors can stabilize the oscillatory instability into finite-amplitude nonlinear oscillations and may lead to other scenarios, including bistability.

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