Efficiency of collective myosin Ⅱ motors studied with an elastic coupling power-stroke ratchet model

doi:10.1088/1674-1056/27/12/128701

中国物理B ›› 2018, Vol. 27 ›› Issue (12): 128701-128701.doi: 10.1088/1674-1056/27/12/128701

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Efficiency of collective myosin Ⅱ motors studied with an elastic coupling power-stroke ratchet model

Zi-Qing Wang(汪自庆), Jin-Fang Li(李金芳), Ying-Ge Xie(解迎革), Guo-Dong Wang(王国栋), Yao-Gen Shu(舒咬根)

1 College of Science, Northwest A & F University, Yangling 712100, China;
2 CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences(CAS), Beijing 100190, China

收稿日期:2018-07-31 修回日期:2018-09-24 出版日期:2018-12-05 发布日期:2018-12-05
通讯作者: Yao-Gen Shu E-mail:shuyg@itp.ac.cn
基金资助:
Project supported by the Key Research Program of Frontier Sciences of Chinese Academy of Sciences (Grant No. Y7Y1472Y61), the National Natural Science Foundation of China (Grant Nos. 11205123, 11574329, 11774358, 11747601, and 11675017), the Joint NSFC-ISF Research Program (Grant No. 51561145002), the CAS Biophysics Interdisciplinary Innovation Team Project (Grant No. 2060299), the CAS Strategic Priority Research Program (Grant No. XDA17010504), and the Fundamental Research Funds for the Central Universities (Grant No. 2017EYT24).

Efficiency of collective myosin Ⅱ motors studied with an elastic coupling power-stroke ratchet model

Zi-Qing Wang(汪自庆)¹, Jin-Fang Li(李金芳)¹, Ying-Ge Xie(解迎革)¹, Guo-Dong Wang(王国栋)¹, Yao-Gen Shu(舒咬根)²

1 College of Science, Northwest A & F University, Yangling 712100, China;
2 CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences(CAS), Beijing 100190, China

Received:2018-07-31 Revised:2018-09-24 Online:2018-12-05 Published:2018-12-05
Contact: Yao-Gen Shu E-mail:shuyg@itp.ac.cn
Supported by:
Project supported by the Key Research Program of Frontier Sciences of Chinese Academy of Sciences (Grant No. Y7Y1472Y61), the National Natural Science Foundation of China (Grant Nos. 11205123, 11574329, 11774358, 11747601, and 11675017), the Joint NSFC-ISF Research Program (Grant No. 51561145002), the CAS Biophysics Interdisciplinary Innovation Team Project (Grant No. 2060299), the CAS Strategic Priority Research Program (Grant No. XDA17010504), and the Fundamental Research Funds for the Central Universities (Grant No. 2017EYT24).

摘要/Abstract

摘要：

We proposed a modified ratchet model including power-stroke and elastic coupling to study the efficiency of collective non-processive motors such as myosin Ⅱ in muscle. Our theoretical results are in good agreement with the experimental data. Our study not only reveals that the maximum efficiency depends on elasticity and is independent of transition rates but also indicates that the parameters fitted to fast muscle are different from those fitted to a slow one. The latter may imply that the structure of the fast muscle is different from that of the slow one. The main reason that our model succeeds is that velocity in this model is an independent variable.

关键词: efficiency of collective non-processive motors, ratchet model, power-stroke, elasticity

Abstract:

Key words: efficiency of collective non-processive motors, ratchet model, power-stroke, elasticity

中图分类号: (Motor proteins (myosin, kinesin dynein))

87.16.Nn

汪自庆, 李金芳, 解迎革, 王国栋, 舒咬根. Efficiency of collective myosin Ⅱ motors studied with an elastic coupling power-stroke ratchet model[J]. 中国物理B, 2018, 27(12): 128701-128701.

Zi-Qing Wang(汪自庆), Jin-Fang Li(李金芳), Ying-Ge Xie(解迎革), Guo-Dong Wang(王国栋), Yao-Gen Shu(舒咬根). Efficiency of collective myosin Ⅱ motors studied with an elastic coupling power-stroke ratchet model[J]. Chin. Phys. B, 2018, 27(12): 128701-128701.

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Efficiency of collective myosin Ⅱ motors studied with an elastic coupling power-stroke ratchet model

Efficiency of collective myosin Ⅱ motors studied with an elastic coupling power-stroke ratchet model

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