Universal bound on the efficiency of molecular motors
By Patrick Pietzonka, A. C. Barato, U. Seifert. 2016
155 citations recorded by the source corpus.
The thermodynamic uncertainty relation provides an inequality relating any mean current, the associated dispersion and the entropy production rate for arbitrary non-equilibrium steady states. Applying it here to a general model of a molecular motor running against an external force or torque, we show that the thermodynamic efficiency of such motors is universally bounded by an expression involving only experimentally accessible quantities. For motors pulling cargo through a viscous fluid, a universal bound for the corresponding Stokes efficiency follows as a variant. A similar result holds if mechanical force is used to synthesize molecules of high chemical potential. Crucially, no knowledge of the detailed underlying mechano-chemical mechanism is required for applying these bounds.
Subfields: Condensed Matter Physics, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/5b3034c4a466ea80c6d568e76f2b70a1aead0598
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In Condensed Matter Physics
In Statistical and Nonlinear Physics
- U. Seifert
- Jordan M. Horowitz
- Karl J. Friston
- Massimiliano Esposito
- Keiji Saito
- R. Eichhorn
- Lennart Dabelow
- Stefano Bo
Citations in the corpus
- Stochastic thermodynamics: From principles to the cost of precision (2017, background): “(71) The thermodynamic efficiency of such a motor η ≡ P/P fulfills a universal bound set by the thermodynamic uncertainty relation (70) applied to the output current that can be obtained through a simple algebraic transformations as [33] η = P Pout + σ/β = v f v f + σ/β ≤ 1 1 + v/(D fβ) .”
- Discrete-time thermodynamic uncertainty relation (2017, unknown): “Furthermore, its usefulness has, in its short existence, been illustrated in different contexts including molecular motors [4], first-passage problems [5,6], heat engines [7], selfassembly [8], information theory [9], and biochemical oscillations [10].”