Regulation of TORC1 by Rag GTPases in nutrient response.
Regulation of TORC1 by Rag GTPases in nutrient response.
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DOI:
10.1038/ncb1753
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发表时间:
2008-08
影响因子:
21.3
通讯作者:
Guan, Kun-Liang
中科院分区:
文献类型:
--
作者:
Kim, Eunjung;Goraksha-Hicks, Pankuri;Li, Li;Neufeld, Thomas P.;Guan, Kun-Liang
TORC1 (Target of rapamycin complex 1) has a critical role in the regulation of cell growth and cell size. A wide range of signals, including amino acids, is known to activate TORC1. Here, we report the identification of Rag GTPases as novel activators of TORC1 in response to amino acid signals. Knockdown of Rag gene expression suppressed the stimulatory effect of amino acids on TORC1 in Drosophila S2 cells. Expression of constitutively active (GTP-bound) Rag in mammalian cells enhances TORC1 in the absence of amino acids while expression of dominant negative Rag blocks the stimulatory effects of amino acids on TORC1. Drosophila genetic studies also show that the Rag GTPases regulate cell growth, autophagy, and animal viability under starvation. Together, our studies establish a novel function of Rag GTPases in TORC1 activation in response to amino acid signals.
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影响因子:
16
作者:
Dubouloz, F;Deloche, O;De Virgillo, C
通讯作者:
De Virgillo, C
DOI:
10.1083/jcb.200403069
发表时间:
2004-07-19
期刊:
The Journal of cell biology
影响因子:
--
作者:
Harrington LS;Findlay GM;Gray A;Tolkacheva T;Wigfield S;Rebholz H;Barnett J;Leslie NR;Cheng S;Shepherd PR;Gout I;Downes CP;Lamb RF
通讯作者:
Lamb RF
影响因子:
16
作者:
Loewith, R;Jacinto, E;Hall, MN
通讯作者:
Hall, MN
影响因子:
4.8
作者:
Noda, T;Ohsumi, Y
通讯作者:
Ohsumi, Y
DOI:
10.1073/pnas.110149597
发表时间:
2000-06-06
影响因子:
11.1
作者:
Clemens, JC;Worby, CA;Dixon, JE
通讯作者:
Dixon, JE