A critical role of eEF-2K in mediating autophagy in response to multiple cellular stresses.
A critical role of eEF-2K in mediating autophagy in response to multiple cellular stresses.
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DOI:
10.4161/auto.5.3.7762
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发表时间:
2009-04
期刊:
影响因子:
13.3
通讯作者:
Yuan J
中科院分区:
文献类型:
--
作者:
Py BF;Boyce M;Yuan J
The phosphorylation of the subunit α of eukaryotic translation initiation factor 2 (eIF2α), a critical regulatory event in controlling protein translation, has recently been found to mediate the induction of autophagy. However, the mediators of autophagy downstream of eIF2α remain unknown. Here, we provide evidence that eIF2α phosphorylation is required for phosphorylation of eukaryotic elongation factor 2 (eEF-2) during nutrient starvation. In addition, we show that eukaryotic elongation factor 2 kinase (eEF-2K) is also required for autophagy signaling during ER stress, suggesting that phosphorylation of eEF-2 may serve as an integrator of various cell stresses for autophagy signaling. On the other hand, although the activation of eEF-2K in response to starvation requires the phosphorylation of eIF2α, additional pathways relying partly on Ca2+ flux may control eEF-2K activity during ER stress, as eIF2α phosphorylation is dispensable for both eEF-2 phosphorylation and autophagy in this context.
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影响因子:
16
作者:
Harding, HP;Zhang, YH;Ron, D
通讯作者:
Ron, D
影响因子:
16
作者:
Harding, HP;Novoa, I;Ron, D
通讯作者:
Ron, D
DOI:
10.1016/s0006-291x(05)81347-6
发表时间:
1991-11-14
影响因子:
3.1
作者:
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通讯作者:
NYGARD, O
影响因子:
64.8
作者:
RYAZANOV, AG;SHESTAKOVA, EA;NATAPOV, PG
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NATAPOV, PG
影响因子:
4.8
作者:
Fernandez, J;Yaman, I;Hatzoglou, M
通讯作者:
Hatzoglou, M