Movements of molecular motors: Ratchets, random walks and traffic phenomena

Abstract

Processive molecular motors which drive the traffic of organelles in cells move in a directed way along cytoskeletal filaments. On large time scales, they perform motor walks, i.e., peculiar random walks which arise from the repeated unbinding from and rebinding to filaments. Unbound motors perform Brownian motion in the surrounding fluid. In addition, the traffic of molecular motors exhibits many cooperative phenomena. In particular, it faces similar problems as the traffic on streets such as the occurrence of traffic jams and the coordination of (two-way) traffic. These issues are studied here theoretically using lattice models.

latex, uses elsart.cls and phyeauth.cls (included), 10 pages, 6 figures, to appear in the proceedings of FQMT'04, Prague

References in corpus (6)

• Traffic of molecular motors through tube-like compartments
• Phase transitions in systems with two species of molecular motors
• Self-organized density patterns of molecular motors in arrays of cytoskeletal filaments
• Random walks of molecular motors arising from diffusional encounters with immobilized filaments
• Asymmetric simple exclusion processes with diffusive bottlenecks
• Walks of molecular motors interacting with immobilized filaments

Cited by in corpus (7)

• Parallel Coupling of Symmetric and Asymmetric Exclusion Processes
• Dynamical activity universally bounds precision of response in Markovian nonequilibrium systems
• Using tensor network states for multi-particle Brownian ratchets
• Inhomogeneous Coupling in Two-Channel Asymmetric Simple Exclusion Processes
• Stochastic Fluid Dynamics Simulations of the Velocity Distribution in Protoplasmic Streaming
• Collective Effects in Models for Interacting Molecular Motors and Motor-Microtubule Mixtures
• Cytoskeletal filament length controlled dynamic sequestering of intracellular cargo