A role for the eIF4E-binding protein 4E-T in P-body formation and mRNA decay.
A role for the eIF4E-binding protein 4E-T in P-body formation and mRNA decay.
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DOI:
10.1083/jcb.200504039
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发表时间:
2005-09-12
期刊:
影响因子:
--
通讯作者:
Sonenberg N
中科院分区:
文献类型:
--
作者:
Ferraiuolo MA;Basak S;Dostie J;Murray EL;Schoenberg DR;Sonenberg N
4E-transporter (4E-T) is one of several proteins that bind the mRNA 5′cap-binding protein, eukaryotic initiation factor 4E (eIF4E), through a conserved binding motif. We previously showed that 4E-T is a nucleocytoplasmic shuttling protein, which mediates the import of eIF4E into the nucleus. At steady state, 4E-T is predominantly cytoplasmic and is concentrated in bodies that conspicuously resemble the recently described processing bodies (P-bodies), which are believed to be sites of mRNA decay. In this paper, we demonstrate that 4E-T colocalizes with mRNA decapping factors in bona fide P-bodies. Moreover, 4E-T controls mRNA half-life, because its depletion from cells using short interfering RNA increases mRNA stability. The 4E-T binding partner, eIF4E, also is localized in P-bodies. 4E-T interaction with eIF4E represses translation, which is believed to be a prerequisite for targeting of mRNAs to P-bodies. Collectively, these data suggest that 4E-T interaction with eIF4E is a priming event in inducing messenger ribonucleoprotein rearrangement and transition from translation to decay.
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影响因子:
7.8
作者:
Dostie, J;Lejbkowicz, F;Sonenberg, N
通讯作者:
Sonenberg, N
DOI:
10.1083/jcb.136.4.761
发表时间:
1997-02-24
期刊:
The Journal of cell biology
影响因子:
--
作者:
Bashkirov VI;Scherthan H;Solinger JA;Buerstedde JM;Heyer WD
通讯作者:
Heyer WD
影响因子:
11.4
作者:
Achsel, T;Brahms, H;Lührmann, R
通讯作者:
Lührmann, R
DOI:
10.1073/pnas.0400933101
发表时间:
2004-03-23
影响因子:
11.1
作者:
Ferraiuolo, MA;Lee, CS;Sonenberg, N
通讯作者:
Sonenberg, N
影响因子:
4.5
作者:
Eystathioy, T;Jakymiw, A;Fritzler, MJ
通讯作者:
Fritzler, MJ