Regulation of retromer recruitment to endosomes by sequential action of Rab5 and Rab7.
Regulation of retromer recruitment to endosomes by sequential action of Rab5 and Rab7.
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DOI:
10.1083/jcb.200804048
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发表时间:
2008-11-03
期刊:
影响因子:
--
通讯作者:
Bonifacino JS
中科院分区:
文献类型:
--
作者:
Rojas R;van Vlijmen T;Mardones GA;Prabhu Y;Rojas AL;Mohammed S;Heck AJ;Raposo G;van der Sluijs P;Bonifacino JS
The retromer complex mediates retrograde transport of transmembrane cargo from endosomes to the trans-Golgi network (TGN). Mammalian retromer is composed of a sorting nexin (SNX) dimer that binds to phosphatidylinositol 3-phosphate–enriched endosomal membranes and a vacuolar protein sorting (Vps) 26/29/35 trimer that participates in cargo recognition. The mammalian SNX dimer is necessary but not sufficient for recruitment of the Vps26/29/35 trimer to membranes. In this study, we demonstrate that the guanosine triphosphatase Rab7 contributes to this recruitment. The Vps26/29/35 trimer specifically binds to Rab7–guanosine triphosphate (GTP) and localizes to Rab7-containing endosomal domains. Interference with Rab7 function causes dissociation of the Vps26/29/35 trimer but not the SNX dimer from membranes. This blocks retrieval of mannose 6-phosphate receptors to the TGN and impairs cathepsin D sorting. Rab5-GTP does not bind to the Vps26/29/35 trimer, but perturbation of Rab5 function causes dissociation of both the SNX and Vps26/29/35 components from membranes through inhibition of a pathway involving phosphatidylinositol 3-kinase. These findings demonstrate that Rab5 and Rab7 act in concert to regulate retromer recruitment to endosomes.
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影响因子:
4.8
作者:
Cozier, GE;Carlton, J;Cullen, PJ
通讯作者:
Cullen, PJ
影响因子:
16.8
作者:
Collins, BM;Skinner, CF;Owen, DJ
通讯作者:
Owen, DJ
影响因子:
56.9
作者:
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通讯作者:
Pfeffer, SR
DOI:
10.1006/meth.2000.0953
发表时间:
2000-04-01
期刊:
METHODS-A COMPANION TO METHODS IN ENZYMOLOGY
影响因子:
--
作者:
Christoforidis, S;Zerial, M
通讯作者:
Zerial, M
影响因子:
4.1
作者:
Damen, Ester;Krieger, Elmar;van Leeuwen, Jeroen E. M.
通讯作者:
van Leeuwen, Jeroen E. M.