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arXiv · 2002.12796

Motility and Energetics of Randomly Flashing Ratchets

Xining Xu·Yunxin Zhang
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Abstract

We consider a randomly flashing ratchet, where the potential acting can be switched to another at random. Using coupled Fokker-Planck equations, we formulate the expressions of quantities measuring dynamics and thermodynamics. Extended numerical calculations present how the potential landscapes and the transitions affect the motility and energetics. Load-dependent velocity and energetic efficiency of motor proteins, kinesin and dynein, further exemplify the randomly flashing ratchet model. We also discuss the system with two shifted sawtooth potentials.

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Xining Xu, Yunxin Zhang. 2020-02-27. Motility and Energetics of Randomly Flashing Ratchets. https://doi.org/10.1088/1742-5468%2Fabe597

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