Rho-dependent control of anillin behavior during cytokinesis.

Rho-dependent control of anillin behavior during cytokinesis.
复制标题

DOI:
10.1083/jcb.200709005
复制
发表时间:
2008-01-28
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
O'Farrell PH
O'Farrell PH
中科院分区:
其他
文献类型:
--
作者:
Hickson GR;O'Farrell PH

文献摘要

参考文献

被引文献

相似文献

阿尼林是细胞质分裂所需的一种保守蛋白质,但其分子功能尚不清楚。在卵裂沟处的苯胺素积累是依赖于Rho鸟嘌呤核苷酸交换因子(Global)PBL的,但也可能是由已知的苯胺素与F-肌动蛋白和肌球蛋白II的相互作用所介导的,这两个蛋白本身受RhoGEFPbl的控制。对果蝇黑腹果蝇S2细胞的显微镜观察显示,尽管肌球蛋白II和F-肌动蛋白确实起到了作用,但赤道苯青素的定位在它们缺失的情况下仍然存在。使用F-肌动蛋白组装的抑制剂latrunculin A,我们发现了一条独立的RhoGEFPbl依赖的途径,在正常的开沟时间,允许含有苯丙素、Rho1和Septins的稳定的丝状结构直接在赤道质膜上形成。这些结构与微管末端相关,并在微管解聚后仍可形成,尽管它们在这种条件下被离域。因此,一种新的依赖于RhoGEFPbl的输入促进了苯青素与质膜、隔膜素和MTS的同时结合,而不依赖于F-肌动蛋白。我们认为,这种相互作用是动态和瞬时发生的,以促进沟槽的稳定性。
Anillin is a conserved protein required for cytokinesis but its molecular function is unclear. Anillin accumulation at the cleavage furrow is Rho guanine nucleotide exchange factor (GEF)Pbl–dependent but may also be mediated by known anillin interactions with F-actin and myosin II, which are under RhoGEFPbl-dependent control themselves. Microscopy of Drosophila melanogaster S2 cells reveal here that although myosin II and F-actin do contribute, equatorial anillin localization persists in their absence. Using latrunculin A, the inhibitor of F-actin assembly, we uncovered a separate RhoGEFPbl-dependent pathway that, at the normal time of furrowing, allows stable filamentous structures containing anillin, Rho1, and septins to form directly at the equatorial plasma membrane. These structures associate with microtubule (MT) ends and can still form after MT depolymerization, although they are delocalized under such conditions. Thus, a novel RhoGEFPbl-dependent input promotes the simultaneous association of anillin with the plasma membrane, septins, and MTs, independently of F-actin. We propose that such interactions occur dynamically and transiently to promote furrow stability.
DOI: 10.1016/j.cub.2005.12.043
发表时间: 2006-02-21
期刊: CURRENT BIOLOGY
影响因子: 9.2
作者:
Hickson, GRX;Echard, A;O'Farrell, PH
通讯作者: O'Farrell, PH
DOI: 10.1242/dev.01843
发表时间: 2005-06-01
期刊: DEVELOPMENT
影响因子: 4.6
作者:
Field, CM;Coughlin, M;Sullivan, W
通讯作者: Sullivan, W
DOI: 10.1016/0092-8674(94)90152-x
发表时间: 1994-05-06
期刊: CELL
影响因子: 64.5
作者:
NEUFELD, TP;RUBIN, GM
通讯作者: RUBIN, GM
DOI: 10.1083/jcb.111.5.1905
发表时间: 1990-11
期刊: The Journal of cell biology
影响因子: --
作者:
Cao LG;Wang YL
通讯作者: Wang YL
DOI: 10.1016/j.devcel.2007.02.018
发表时间: 2007-05-01
期刊: DEVELOPMENTAL CELL
影响因子: 11.8
作者:
Maddox, Amy Shaub;Lewellyn, Lindsay;Oegema, Karen
通讯作者: Oegema, Karen