驱动马达定向运动的随机动力学模型
收稿日期: 2020-06-11
修回日期: 2020-09-03
网络出版日期: 2021-04-21
基金资助
国家自然科学基金重点项目( 11735005) 资助
A stochastic dynamics model for the directional transport of kinesin
Received date: 2020-06-11
Revised date: 2020-09-03
Online published: 2021-04-21
杨紫贝, 邱 星, 陈巧妮, 王海燕 . 驱动马达定向运动的随机动力学模型[J]. 大学物理, 2021 , 40(4) : 68 . DOI: 10. 16854 / j. cnki. 1000-0712. 200244
asymmetric peri- odic potential during stepping. Based on Brownian motor theory,we numerically
simulate the motion characteristics of kinesin under certain experimental conditions by MATLAB.
Firstly,we simulate the image of the displacement and velocity changing with time of a
single kinesin. Then we respectively calculate the average speed of several ki- nesin. Finally we
calculate the ensemble average of the speed of kinesin under different loads. The simulation
re- sults show that kinesin has waiting state and walking state in directional motion,the walking
step is about 8. 2 nm, and the motion has certain randomness. Comparing with the experimental
results,it is found that the calculated re- sults of the model are in good agreement with the
experimental results.
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