Akt-mediated phosphorylation of argonaute 2 downregulates cleavage and upregulates translational repression of MicroRNA targets.
Akt-mediated phosphorylation of argonaute 2 downregulates cleavage and upregulates translational repression of MicroRNA targets.
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DOI:
10.1016/j.molcel.2013.03.015
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发表时间:
2013-05-09
期刊:
影响因子:
16
通讯作者:
Orth, Anthony P.
中科院分区:
文献类型:
--
作者:
Horman, Shane R.;Janas, Maja M.;Litterst, Claudia;Wang, Bingbing;MacRae, Ian J.;Sever, Mary J.;Morrissey, David V.;Graves, Paul;Luo, Biao;Umesalma, Shaikamjad;Qi, Hank H.;Miraglia, Loren J.;Novina, Carl D.;Orth, Anthony P.
A high-throughput RNA interference (RNAi) screen targeting 542 genes of the human kinome was used to discover regulators of RNAi. Here we report that the proto-oncogene Akt-3/PKBγ (Akt3) phosphorylates Argonaute 2 (Ago2) at Ser387 which down-regulates cleavage and up-regulates translational repression of endogenous microRNA (miRNA)-targeted mRNAs. We further demonstrate that Akt3 co-immunoprecipitates with Ago2 and that phosphorylation of Ago2 at Ser387 facilitates its interaction with GW182 and localization to cytoplasmic P-bodies, where miRNA-targeted mRNAs are thought to be stored and degraded. Therefore, Akt3-mediated phosphorylation of Ago2 is a molecular switch between target mRNA cleavage and translational repression activities of Ago2.
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影响因子:
21.3
作者:
Jakymiw, A;Lian, SL;Chan, EKL
通讯作者:
Chan, EKL
影响因子:
64.8
作者:
通讯作者:
--
DOI:
10.1046/j.1432-1327.1999.00774.x
发表时间:
1999-10-01
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
作者:
Masure, S;Haefner, B;Richardson, A
通讯作者:
Richardson, A
影响因子:
4.5
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Janas, Maja M.;Wang, Bingbing;Novina, Carl D.
通讯作者:
Novina, Carl D.
影响因子:
16
作者:
Karginov, Fedor V.;Cheloufi, Sihem;Chong, Mark M. W.;Stark, Alexander;Smith, Andrew D.;Hannon, Gregory J.
通讯作者:
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