The contribution of αβ-tubulin curvature to microtubule dynamics.

The contribution of αβ-tubulin curvature to microtubule dynamics.
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DOI:
10.1083/jcb.201407095
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发表时间:
2014-11-10
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Rice LM
Rice LM
中科院分区:
其他
文献类型:
--
作者:
Brouhard GJ;Rice LM

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微管是αβ-微管蛋白的动态聚合物,其形成不同的细胞结构,例如用于细胞分裂的有丝分裂纺锤体、神经元的骨架和轴丝。为了控制微管网络的结构,微管相关蛋白(MAP)和马达蛋白调节微管的生长,收缩和这些状态之间的转换。最近的证据表明,许多MAP通过选择性地结合聚合或未聚合的αβ-微管蛋白的不同构象来发挥其作用。αβ-微管蛋白采用不同构象的能力有助于微管的内在聚合动力学。αβ-微管蛋白构象是MAP监测和控制以构建适当微管网络的基本性质。
Microtubules are dynamic polymers of αβ-tubulin that form diverse cellular structures, such as the mitotic spindle for cell division, the backbone of neurons, and axonemes. To control the architecture of microtubule networks, microtubule-associated proteins (MAPs) and motor proteins regulate microtubule growth, shrinkage, and the transitions between these states. Recent evidence shows that many MAPs exert their effects by selectively binding to distinct conformations of polymerized or unpolymerized αβ-tubulin. The ability of αβ-tubulin to adopt distinct conformations contributes to the intrinsic polymerization dynamics of microtubules. αβ-Tubulin conformation is a fundamental property that MAPs monitor and control to build proper microtubule networks.
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