Biology – Quantitative Biology – Subcellular Processes
Scientific paper
2005-12-08
Phys. Rev. Lett. 97, 038101 (2006)
Biology
Quantitative Biology
Subcellular Processes
5 pages, 5 figures
Scientific paper
10.1103/PhysRevLett.97.038101
The collective dynamics of $N$ weakly coupled processive molecular motors are considered theoretically. We show, using a discrete lattice model, that the velocity-force curves strongly depend on the effective dynamic interactions between motors and differ significantly from a simple mean field prediction. They become essentially independent of $N$ if it is large enough. For strongly biased motors such as kinesin this occurs if $N\gtrsim 5$. The study of a two-state model shows that the existence of internal states can induce effective interactions.
Campas Otger
Casademunt Jaume
Joanny Jean-Francois
Kafri Yariv
Zeldovich Konstantin B.
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