Cbl controls EGFR fate by regulating early endosome fusion.
Cbl controls EGFR fate by regulating early endosome fusion.
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DOI:
10.1126/scisignal.2000217
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发表时间:
2009-12-22
影响因子:
7.3
通讯作者:
Lill NL
中科院分区:
文献类型:
--
作者:
Visser Smit GD;Place TL;Cole SL;Clausen KA;Vemuganti S;Zhang G;Koland JG;Lill NL
Residues 1-434 of the ubiquitin ligase Cbl control epidermal growth factor receptor (EGF-R) signaling by enhancing receptor ubiquitination, downregulation, and lysosomal degradation. Cbl 1-434 comprises a tyrosine kinase-binding domain, linker region, RING finger (RF), and a subset of the RF tail amino acids 420-436. Using full-length alanine substitution mutants, we demonstrate that the Cbl RF tail regulates biochemically distinct EGF-R endocytosis checkpoints: 1) Cbl- and ubiquitin-dependent degradation of hSprouty2 upstream of EGF-R ubiquitination (compromised by Cbl V431A); and 2) Cbl- and EGF-R-dependent dephosphorylation or degradation of the endosomal trafficking regulator Hrs (compromised by Cbl F434A). Deregulated Hrs phosphorylation correlates with the inhibition of both early endosome fusion and EGF-R degradation. This is the first evidence that Cbl can regulate receptor fate by controlling the fusion of sorting endosomes. We postulate that it does so by modulating the generation and loss of tyrosine phosphorylated Hrs.
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影响因子:
4
作者:
Urbé, S;Sachse, M;Clague, MJ
通讯作者:
Clague, MJ
影响因子:
7.3
作者:
Visser Smit GD;Place TL;Cole SL;Clausen KA;Vemuganti S;Zhang G;Koland JG;Lill NL
通讯作者:
Lill NL
影响因子:
5.3
作者:
Urbé, S;Mills, IG;Clague, MJ
通讯作者:
Clague, MJ
影响因子:
9.2
作者:
Hall, AB;Jura, N;Bar-Sagi, D
通讯作者:
Bar-Sagi, D
影响因子:
21.3
作者:
Haglund, K;Sigismund, S;Dikic, I
通讯作者:
Dikic, I