体积排阻和弹性驱动的定向运输:细菌运动的另一种模型
Volume exclusion and elasticity driven directional transport: an alternative model for bacterium motility
摘要:
在一个模型的基础上,我们捕捉到的作用,强吸引力的相互作用,在抑制系统的旋转自由度和体积排阻保持微观的破坏完整的超扩散运输的小系统在一个大的时间尺度上的热大气中。我们的研究结果,具有超扩散中间政权之间的扩散制度的一个非常小的和大的时间尺度的基础上,这样的系统的特征。虽然,布朗棘轮模型不能解释的起源,肌动蛋白聚合推动的定向运动的细菌,如单核细胞李斯特菌(LM)和类似的仿生系统,由于存在强大的吸引力,我们的模型可以解释的起源定向运输在这样的系统的基础上相同的相互作用。
英文摘要:
On the basis of a model we capture the role of strong attractive interaction in suppressing the rotational degrees of freedom of the system and volume exclusion in keeping microscopic symmetry-breaking intact to result in super-diffusive transport of small systems in a thermal atmosphere over a large time scale. Our results, characterize such systems on the basis of having a super-diffusive intermediate regime in between a very small and large time scales of diffusive regimes. Although, the Brownian ratchet model fails to account for the origin of motility in actin polymerization propelled directional motion of bacterium like Listeria Monocytogene (LM) and similar bio-mimetic systems due to the presence of strong attractive forces, our model can account for the origin of directional transport in such systems on the basis of the same interactions.
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