The bacterial cell division proteins FtsA and FtsZ self-organize into dynamic cytoskeletal patterns.

The bacterial cell division proteins FtsA and FtsZ self-organize into dynamic cytoskeletal patterns.
复制标题

DOI:
10.1038/ncb2885
复制
发表时间:
2014-01
影响因子:
21.3
通讯作者:
--
中科院分区:
生物学1区
文献类型:
--
作者:

文献摘要

参考文献

被引文献

相似文献

细菌胞质分裂通常由Z环启动,Z环是在分裂位点组装的细胞骨架结构。它的主要成分是FtsZ,一个微管蛋白超家族GTTZ,它被肌动蛋白相关蛋白FtsA募集到膜上。这两种蛋白质都是Z环形成所必需的,但它们是否以及如何影响彼此的组装动力学尚不清楚。在这里,我们重建了FtsA依赖的FtsZ聚合物的招聘支持膜,其中两种蛋白质自组织成复杂的模式,如快速移动的丝束和手性旋转环。使用荧光显微镜和生化扰动,我们发现,这些大规模的重排FtsZ出现从其聚合动力学和双重,拮抗作用的FtsA:招聘FtsZ丝的膜和负调控FtsZ组织。我们的研究结果为细菌细胞分裂的初始步骤提供了一个模型,并说明了动态聚合物如何自组织成大规模结构。
Bacterial cytokinesis is commonly initiated by the Z-ring, a cytoskeletal structure assembling at the site of division. Its primary component is FtsZ, a tubulin superfamily GTPase, which is recruited to the membrane by the actin-related protein FtsA. Both proteins are required for the formation of the Z-ring, but if and how they influence each other’s assembly dynamics is not known. Here, we reconstituted FtsA-dependent recruitment of FtsZ polymers to supported membranes, where both proteins self-organize into complex patterns, such as fast-moving filament bundles and chirally rotating rings. Using fluorescence microscopy and biochemical perturbations, we found that these large-scale rearrangements of FtsZ emerge from its polymerization dynamics and a dual, antagonistic role of FtsA: recruitment of FtsZ filaments to the membrane and a negative regulation on FtsZ organization. Our findings provide a model for the initial steps of bacterial cell division and illustrate how dynamic polymers can self-organize into large-scale structures.
DOI: 10.1074/jbc.m808872200
发表时间: 2009-05-22
影响因子: 4.8
作者:
Beuria, Tushar K.;Mullapudi, Srinivas;Margolin, William
通讯作者: Margolin, William
DOI: 10.1128/jb.181.24.7531-7544.1999
发表时间: 1999-12-01
影响因子: 3.2
作者:
Ma, XL;Margolin, W
通讯作者: Margolin, W
DOI: 10.1038/nsmb.2037
发表时间: 2011-05-01
影响因子: 16.8
作者:
Loose, Martin;Fischer-Friedrich, Elisabeth;Schwille, Petra
通讯作者: Schwille, Petra
DOI: 10.1016/s0006-3495(96)79630-3
发表时间: 1996-02-01
影响因子: 3.4
作者:
Kas, J;Strey, H;Janmey, PA
通讯作者: Janmey, PA
DOI: 10.1074/jbc.m009810200
发表时间: 2001-04-13
影响因子: 4.8
作者:
Haney, SA;Glasfeld, E;de Boer, P
通讯作者: de Boer, P