Active diffusion of motor particles

Abstract

The movement of motor particles consisting of one or several molecular motors bound to a cargo particle is studied theoretically. The particles move on patterns of immobilized filaments. Several patterns are described for which the motor particles undergo non-directed but enhanced diffusion. Depending on the walking distance of the particles and the mesh size of the patterns, the active diffusion coefficient exhibits three different regimes. For micrometer-sized motor particles in water, e.g., this diffusion coefficient can be enhanced by two orders of magnitude.

revtex, 4 pages, 4 figures, to appear in PRL

References in corpus (3)

• Wigner crystal model of counterion induced bundle formation of rod-like polyelectrolytes
• Role of cross-links in bundle formation, phase separation and gelation of long filaments
• Elastically-Driven Linker Aggregation between Two Semi-Flexible Polyelectrolytes

Cited by in corpus (19)

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• Packing defects and the width of biopolymer bundles
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• Parallelized event chain algorithm for dense hard sphere and polymer systems
• Event-Chain Monte-Carlo Simulations of Dense Soft Matter Systems
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• Cooperative crosslink (un)binding in slowly driven bundles of semiflexible filaments
• Tension-induced binding of semiflexible biopolymers
• Bundling in brushes of directed and semiflexible polymers
• Crosslinked biopolymer bundles: crosslink reversibility leads to cooperative binding/unbinding phenomena
• Bundle formation in parallel aligned polymers with competing interactions
• Strength and stability of active ligand-receptor bonds: a microtubule attached to a wall by molecular motor tethers
• Effect of grafting on the binding transition of two flexible polymers
• From particle condensation to polymer aggregation