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arXiv 0704.0305physics.bio-ph
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聚合力驱动的微管束屈曲决定微管蛋白溶液中形成图案的波长

Polymerization Force Driven Buckling of Microtubule Bundles Determines the Wavelength of Patterns Formed in Tubulin Solutions

Yongxing Guo, Yifeng Liu, Jay X. Tang, James M. Valles

摘要:

我们提出了一个聚合微管溶液中自发形成条纹图案的模型。它描述了一个单一的微管(MT)束内的其他类似的对齐和屈曲束和未对齐的MT形成的弹性网络的屈曲。相位差和偏振显微镜的时间演变的图案的研究意味着,在束内的MT的聚合产生的驱动压缩力。利用测得的屈曲率、已建立的MT力-速度曲线和模式波长,我们得到了MT束弯曲刚度和网络弹性常数的合理估计。分析表明,束作为固体杆屈曲。

英文摘要:

We present a model for the spontaneous formation of a striated pattern in polymerizing microtubule solutions. It describes the buckling of a single microtubule (MT) bundle within an elastic network formed by other similarly aligned and buckling bundles and unaligned MTs. Phase contrast and polarization microscopy studies of the temporal evolution of the pattern imply that the polymerization of MTs within the bundles creates the driving compressional force. Using the measured rate of buckling, the established MT force-velocity curve and the pattern wavelength, we obtain reasonable estimates for the MT bundle bending rigidity and the elastic constant of the network. The analysis implies that the bundles buckle as solid rods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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