Npr2 inhibits TORC1 to prevent inappropriate utilization of glutamine for biosynthesis of nitrogen-containing metabolites.
Npr2 inhibits TORC1 to prevent inappropriate utilization of glutamine for biosynthesis of nitrogen-containing metabolites.
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NPR2抑制TORC1,以防止谷氨酰胺用于含氮代谢物的生物合成的不适当利用。
DOI:
10.1126/scisignal.2005948
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发表时间:
2014-12-16
影响因子:
7.3
通讯作者:
Tu BP
中科院分区:
文献类型:
--
作者:
Laxman S;Sutter BM;Shi L;Tu BP
Cells must be capable of switching between growth and autophagy in unpredictable nutrient environments. Yeast cells lacking the conserved Iml1/Npr2/Npr3 complex (also called SEACIT), a negative regulator of TORC1, can bypass autophagy and proliferate during specific nutrient limitations. We determined that Npr2-deficient cells exhibit a metabolic state that is very distinct from WT cells under such limitations that demand oxidative metabolism. Instead of accumulating glutamine, npr2Δ cells consumed substantial amounts of glutamine to satisfy their demands for nitrogen, and maintained high S-adenosyl methionine (SAM) concentrations to fuel growth. Moreover, in normal cells, methionine addition stimulated glutamine consumption for synthesis of nitrogenous metabolites, showing how a sulfur amino acid cue is integrated with nitrogen utilization. These data reveal the metabolic basis by which the Iml1/Npr2/Npr3 complex regulates cellular homeostasis and demonstrate a key function for TORC1 in regulating the synthesis and utilization of glutamine as a nitrogen source.
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影响因子:
4.8
作者:
DeLuna, A;Avendaño, A;González, A
通讯作者:
González, A
影响因子:
16
作者:
Binda, Matteo;Peli-Gulli, Marie-Pierre;De Virgilio, Claudio
通讯作者:
De Virgilio, Claudio
影响因子:
13.3
作者:
Kanki T;Kang D;Klionsky DJ
通讯作者:
Klionsky DJ
DOI:
10.1038/nrm3522
发表时间:
2013-03
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
影响因子:
5.3
作者:
COSCHIGANO, PW;MILLER, SM;MAGASANIK, B
通讯作者:
MAGASANIK, B