Unlocking the potential of information flow: Maximizing free-energy transduction in a model of an autonomous rotary molecular motor

Abstract

Molecular motors fulfill critical functions within all living beings. Understanding their underlying working principles is therefore of great interest. Here we develop a simple model inspired by the two-component biomolecular motor Fo-F1 ATP synthase. We analyze its energetics and characterize information flows between the machine's components. At maximum output power we find that information transduction plays a minor role for free-energy transduction. However, when the two components are coupled to different environments (e.g., when in contact with heat baths at different temperatures), we show that information flow becomes a resource worth exploiting to maximize free-energy transduction. Our findings suggest that real-world powerful and efficient information engines could be found in machines whose components are subjected to fluctuations of different strength, since in this situation the benefit gained from using information for work extraction can outweigh the costs of information generation.

11 pages, 7 figures

References in corpus (20)

• Physics of Microswimmers - Single Particle Motion and Collective Behavior
• Ensemble and Trajectory Thermodynamics: A Brief Introduction
• Entropy production of active particles and for particles in active baths
• Local detailed balance
• Information-theoretic vs. thermodynamic entropy production in autonomous sensory networks
• Active engines: Thermodynamics moves forward
• Maximizing power and velocity of an information engine
• Efficiency of molecular machines with continuous phase space
• Information engine in a nonequilibrium bath
• Irreversibility in active matter: General framework for active Ornstein-Uhlenbeck particles
• A minimal model of an autonomous thermal motor
• Energy and information flows in autonomous systems
• Szilard engines and information-based work extraction for active systems
• Characterizing autonomous Maxwell demons
• Information flow, Gating, and Energetics in dimeric molecular motors
• Inferring Subsystem Efficiencies in Bipartite Molecular Machines
• Energetic cost of feedback control
• Internal energy and information flows mediate input and output power in bipartite molecular machines
• Free-energy transduction within autonomous systems
• Partially Observable Szilard Engines

Cited by in corpus (5)

• Flow of Energy and Information in Molecular Machines
• A Minimal Model for Carnot Efficiency at Maximum Power
• Information Arbitrage in Bipartite Heat Engines
• Markovian description of a wide class of feedback-controlled systems: Application to the feedback flashing ratchet
• Synchronization of thermodynamically consistent stochastic phase oscillators