Issue |
EPL
Volume 97, Number 4, February 2012
|
|
---|---|---|
Article Number | 40004 | |
Number of page(s) | 6 | |
Section | General | |
DOI | https://doi.org/10.1209/0295-5075/97/40004 | |
Published online | 20 February 2012 |
Recovery of state-specific potential of molecular motor from single-molecule trajectory
1
Faculty of Science and Engineering, Chuo University - Tokyo 112-8551, Japan
2
Faculty of Physics, Ludwig-Maximilians-Universität München - München 80339, Germany, EU
Received:
28
November
2011
Accepted:
17
January
2012
We have developed a novel method to evaluate the potential profile of a molecular motor at each chemical state from only the probe's trajectory and applied it to a rotary molecular motor F1-ATPase. By using this method, we could also obtain the information regarding the mechanochemical coupling and energetics. We demonstrate that the position-dependent transition of the chemical states is the key feature for the highly efficient free-energy transduction by F1-ATPase.
PACS: 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 05.40.Jc – Brownian motion / 87.16.Nn – Motor proteins (myosin, kinesin dynein)
© EPLA, 2012
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