| Автор | Wada, H. |
| Автор | Netz, R. R. |
| Дата выпуска | 2008-04-01 |
| dc.description | Force-induced reversible transformations between coiled and normal polymorphs of bacterial flagella have been observed in recent optical-tweezer experiment. We introduce a discrete elastic rod model with two competing helical states governed by a fluctuating spin-like variable that represents the underlying conformational states of flagellin monomers. Using hybrid Brownian dynamics Monte Carlo simulations, we show that a helix undergoes shape transitions dominated by domain wall nucleation and motion in response to externally applied uniaxial tension. A scaling argument for the critical force is presented in good agreement with experimental and simulation results. Stretching-rate-dependent elasticity including a buckling instability are found, also consistent with the experiment. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | Europhysics Letters Association |
| Название | Discrete elastic model for stretching-induced flagellar polymorphs |
| Тип | lett |
| DOI | 10.1209/0295-5075/82/28001 |
| Electronic ISSN | 1286-4854 |
| Print ISSN | 0295-5075 |
| Журнал | EPL (Europhysics Letters) |
| Том | 82 |
| Первая страница | 28001 |
| Последняя страница | 28006 |
| Аффилиация | Wada, H.; Physics Department, Technical University Munich - 85748 Garching, Germany, EU; Yukawa Institute for Theoretical Physics, Kyoto Universiy - Kyoto, 606-8502, Japan |
| Аффилиация | Netz, R. R.; Physics Department, Technical University Munich - 85748 Garching, Germany, EU |
| Выпуск | 2 |
