Interacting molecular motors: Efficiency and work fluctuations

Abstract

We investigate the model of "reversible ratchet" with interacting particles, introduced by us earlier [Europhys. Lett. 84, 50009 (2008)]. We further clarify the effect of efficiency enhancement due to interaction and show that it is of energetic origin, rather than a consequence of reduced fluctuations. We also show complicated structures emerging in the interaction and density dependence of the current and response function. The fluctuation properties of the work and input energy indicate in detail the far-from-equilibrium nature of the dynamics.

References in corpus (17)

• Artificial Brownian motors: Controlling transport on the nanoscale
• Nonequilibrium Steady States of Matrix Product Form: A Solver's Guide
• Phase Coexistence in Driven One Dimensional Transport
• Fluctuation theorems for stochastic dynamics
• The Totally Asymmetric Simple Exclusion Process with Langmuir Kinetics
• Efficiency of molecular motors at maximum power
• Non-equilibrium fluctuations and mechanochemical couplings of a molecular motor
• Interacting RNA polymerase motors on DNA track: effects of traffic congestion and intrinsic noise on RNA synthesis
• Traffic of interacting ribosomes: effects of single-machine mechano-chemistry on protein synthesis
• Traffic of interacting ribosomes on mRNA during protein synthesis: effects of chemo-mechanics of individual ribosomes
• Intra-cellular transport by single-headed kinesin KIF1A: effects of single-motor mechano-chemistry and steric interactions
• Kinesin Is an Evolutionarily Fine-Tuned Molecular Ratchet-and-Pawl Device of Decisively Locked Direction
• Symmetry Relations for Trajectories of a Brownian Motor
• Five models for myosin V
• Interaction of molecular motors can enhance their efficiency
• Molecular Motors Interacting with Their Own Tracks
• Interaction Between Motor Domains Can Explain the Complex Dynamics of Heterodimeric Kinesins

Cited by in corpus (7)

• Stochastic mechano-chemical kinetics of molecular motors: a multidisciplinary enterprise from a physicist's perspective
• Transport coefficients for a confined Brownian ratchet operating between two heat reservoirs
• Single-file transport in periodic potentials: The Brownian asymmetric exclusion process
• Pumping single-file colloids: Absence of current reversal
• Nonequilibrium transport and phase transitions in driven diffusion of interacting particles
• Hydrodynamic approximations for driven dense colloidal mixtures in narrow pores
• Current reversals in driven lattice gases and Brownian motion