Stochastic dynamics of adhesion catch-slip bond cluster

Details Stochastic dynamics of adhesion catch-slip bond cluster Stochastic dynamics of adhesion catch-slip bond cluster

2006-06-23

arxiv.org/abs/cond-mat/0606591v1

Physics

Condensed Matter

Soft Condensed Matter

7 pages, no figure

Scientific paper

We present a general stochastic dynamic model of a cluster of biological complexes with fluctuating dissociation and association rates. The master equation has analytical solutions in two limiting cases: the vanishing force with reflecting boundary condition and slow reaction limit. In particular, the latter can describe the dynamics of a catch-slip bond cluster under a constant force. We find that if the rebinding rate vanishes, the size of the cluster matters little to the cluster lifetime within the whole catch force regime. The large cluster rapidly decays and single catch bond governs the final dynamic behaviors of the cluster. The catch behavior would be further amplified in the presence of large nonvanishing rebinding rates.

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