Application of the fluctuation theorem to motor proteins: from F1-ATPase to axonal cargo transport by kinesin and dynein

Research output: Contribution to journalReview article

2 Citations (Scopus)

Abstract

The fluctuation theorem is a representative theorem in non-equilibrium statistical physics actively studied in the 1990s. Relating to entropy production in non-equilibrium states, the theorem has been used to estimate the driving power of motor proteins from fluctuation in their motion. In this review, usage of the fluctuation theorem in experiments on motor proteins is illustrated for biologists, especially those who study mechanobiology, in which force measurement is a central issue. We first introduce the application of the fluctuation theorem in measuring the rotary torque of the rotary motor protein F1-ATPase. Next, as an extension of this application, a recent trial estimating the force generated during cargo transport in vivo by the microtubule motors kinesin and dynein is introduced. Elucidation of the physical mechanism of such transport is important, especially for neurons, in which deficits in cargo transport are deeply related to neuronal diseases. Finally, perspectives on the fluctuation theorem as a new technique in the field of neuroscience are discussed.

Original languageEnglish
Pages (from-to)1311-1321
Number of pages11
JournalBiophysical Reviews
Volume10
Issue number5
DOIs
Publication statusPublished - 2018 Oct 1

Keywords

  • Cellular cargo transport
  • Fluctuation theorem
  • Mechanobiology
  • Motor proteins
  • Neuronal disease
  • Non-invasive force measurement

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Molecular Biology

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