Protein complexes containing CYFIP/Sra/PIR121 coordinate Arf1 and Rac1 signalling during clathrin-AP-1-coated carrier biogenesis at the TGN.
Protein complexes containing CYFIP/Sra/PIR121 coordinate Arf1 and Rac1 signalling during clathrin-AP-1-coated carrier biogenesis at the TGN.
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DOI:
10.1038/ncb2034
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发表时间:
2010-04
影响因子:
21.3
通讯作者:
Hoflack, Bernard
中科院分区:
文献类型:
--
作者:
Anitei, Mihaela;Stange, Christoph;Parshina, Irina;Baust, Thorsten;Schenck, Annette;Raposo, Graca;Kirchhausen, Tomas;Hoflack, Bernard
Actin dynamics is a tightly regulated process involved in various cellular events including transport carrier biogenesis such as clathrin-, AP1-coated carriers connecting the trans-Golgi network (TGN) and the endocytic pathway. However, the mechanisms coordinating coat assembly, membrane and actin remodeling during post-TGN transport remain poorly understood. Here, we show that the ARF1 GTPase synchronizes the TGN association of clathrin-AP-1 coats and protein complexes comprising CYFIP (Sra, PIR121), a clathrin heavy chain binding protein associated with mental retardation. The RAC1 GTPase and its exchange factor β-PIX activate these complexes allowing N-WASP- and ARP2/3-dependent actin polymerization towards membranes thus promoting tubule formation. These phenomena can be recapitulated using synthetic membranes. This protein-network-based mechanism facilitates the sequential coordination between ARF1-dependent membrane priming via recruitment of coats and CYFIP (Sra, PIR121)-containing complexes, and RAC1-dependent actin polymerization and provides complementary but independent levels of regulation during early stages of clathrin-, AP1-coated carrier biogenesis.
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影响因子:
3.3
作者:
Egorov, Mikhail V.;Capestrano, Mariagrazia;Polishchuk, Roman S.
通讯作者:
Polishchuk, Roman S.
影响因子:
4.8
作者:
Bacia, K;Schuette, CG;Schwille, P
通讯作者:
Schwille, P
DOI:
10.1073/pnas.0511062103
发表时间:
2006-02-28
影响因子:
11.1
作者:
Baust, T;Czupalla, C;Hoflack, B
通讯作者:
Hoflack, B
DOI:
10.1083/jcb.200403120
发表时间:
2004-06-21
期刊:
The Journal of cell biology
影响因子:
--
作者:
Carreno S;Engqvist-Goldstein AE;Zhang CX;McDonald KL;Drubin DG
通讯作者:
Drubin DG
DOI:
10.1073/pnas.0400628101
发表时间:
2004-03-30
影响因子:
11.1
作者:
Gautreau, A;Ho, HYH;Kirschner, MW
通讯作者:
Kirschner, MW