期刊
PHYSICAL REVIEW LETTERS
卷 98, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.98.088304
关键词
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The dissociation of a biomolecular complex under the action of constant force, constant loading rate, and periodic force is studied theoretically. We show that the celebrated Bell expression provides a good approximation for the bond dissociation rate when F/F-c < 1, where F-c is the maxima slope of the binding potential along the reaction coordinate. When 1-F/F-c < 1 the dissociation rate is better described by a generalized Garg form in which the potential derivative is expanded near F-c. We also show that a constant-force experiment is suitable for extracting the activation energy of the bond, a constant loading experiment is suitable to extract F-c, while time-periodic force can be applied to extract both bond dissociation rates at zero force and F-c.
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