Actin nucleation and elongation factors: mechanisms and interplay.

Actin nucleation and elongation factors: mechanisms and interplay.
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DOI:
10.1016/j.ceb.2008.12.001
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发表时间:
2009-02
影响因子:
7.5
通讯作者:
Goode BL
Goode BL
中科院分区:
生物学2区
文献类型:
--
作者:
Chesarone MA;Goode BL

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细胞需要肌动蛋白成核剂来催化细丝的从头组装和肌动蛋白延伸因子来控制聚合的速率和程度。迄今为止鉴定的成核和延伸因子包括Arp 2/3复合物、formins、Ena/VASP和新的Spire、Cobl和Lmod。在这里,我们讨论了最近的进展,了解他们的活动和机制,以及新的证据,他们在体内的合作和相互作用。早期的模型表明,不同的成核剂独立地发挥作用,组装不同的肌动蛋白阵列。然而,最近的观察表明,大多数细胞肌动蛋白网络的建设取决于多个肌动蛋白组装促进因子协同工作的活动。
Cells require actin nucleators to catalyze the de novo assembly of filaments and actin elongation factors to control the rate and extent of polymerization. Nucleation and elongation factors identified to date include Arp2/3 complex, formins, Ena/VASP, and newcomers Spire, Cobl, and Lmod. Here, we discuss recent advances in understanding their activities and mechanisms, and new evidence for their cooperation and interaction in vivo. Earlier models had suggested that different nucleators function independently to assemble distinct actin arrays. However, more recent observations indicate that the construction of most cellular actin networks depends on the activities of multiple actin-assembly promoting factors working in concert.
DIA1和IQGAP1在细胞迁移和吞噬杯形成中相互作用。
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