Nudel is crucial for the WAVE complex assembly in vivo by selectively promoting subcomplex stability and formation through direct interactions
Nudel is crucial for the WAVE complex assembly in vivo by selectively promoting subcomplex stability and formation through direct interactions
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Nudel 通过直接相互作用选择性地促进子复合物的稳定性和形成,对于体内 WAVE 复合物的组装至关重要
DOI:
10.1038/cr.2012.47
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发表时间:
2012-03
期刊:
影响因子:
44.1
通讯作者:
Zhu, Xueliang
中科院分区:
文献类型:
--
作者:
Wu, Shuang;Ma, Li;Wu, Yibo;Zeng, Rong;Zhu, Xueliang
The WAVE regulatory complex (WRC), consisting of WAVE, Sra, Nap, Abi, and HSPC300, activates the Arp2/3 complex to control branched actin polymerization in response to Rac activation. How the WRC is assembled in vivo is not clear. Here we show that Nudel, a protein critical for lamellipodia formation, dramatically stabilized the Sra1-Nap1-Abi1 complex against degradation in cells through a dynamic binding to Sra1, whereas its physical interaction with HSPC300 protected free HSPC300 from the proteasome-mediated degradation and stimulated the HSPC300-WAVE2 complex formation. By contrast, Nudel showed little or no interactions with the Sra1-Nap1-Abi1-WAVE2 and the Sra1-Nap1-Abi1-HSPC300 complexes as well as the mature WRC. Depletion of Nudel by RNAi led to general subunit degradation and markedly attenuated the levels of mature WRC. It also abolished the WRC-dependent actin polymerization in vitro and the Rac1-induced lamellipodial actin network formation during cell spreading. Therefore, Nudel is important for the early steps of the WRC assembly in vivo by antagonizing the instability of certain WRC subunits and subcomplexes.
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DOI:
10.1083/jcb.140.5.1125
发表时间:
1998-03-09
期刊:
The Journal of cell biology
影响因子:
--
作者:
Ma L;Cantley LC;Janmey PA;Kirschner MW
通讯作者:
Kirschner MW
影响因子:
64.8
作者:
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DOI:
10.1007/978-94-015-9460-8_17
发表时间:
2000
期刊:
--
影响因子:
--
作者:
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Hai Li;Zhenbiao Yang
影响因子:
4.5
作者:
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通讯作者:
Qiangge Zhang;Fubin Wang;Jingli Cao;Yidong Shen;Qiongping Huang;L. Bao;Xueliang Zhu
影响因子:
21.3
作者:
Nguyen, MD;Shu, TZ;Tsai, LH
通讯作者:
Tsai, LH