Oscillations in molecular motor assemblies

Details Oscillations in molecular motor assemblies Oscillations in molecular motor assemblies

2005-08-04

arxiv.org/abs/physics/0508033v2

J. Phys.: Condens. Matter 17:S3901-S3911 (2005)

Physics

Biological Physics

Submitted to Journal of Physics Condensed Matter (special issue "Molecular Motors")

Scientific paper

10.1088/0953-8984/17/47/018

Autonomous oscillations in biological systems may have a biochemical origin or result from an interplay between force-generating and visco-elastic elements. In molecular motor assemblies the force-generating elements are molecular engines and the visco-elastic elements are stiff cytoskeletal polymers. The physical mechanism leading to oscillations depends on the particular architecture of the assembly. Existing models can be grouped into two distinct categories: systems with a delayed force activation and anomalous force-velocity relations. We discuss these systems within phase plane analysis known from the theory of dynamic systems and by adopting methods from control theory, the Nyquist stability criterion.

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