Phosphorylation of ULK1 (hATG1) by AMP-activated protein kinase connects energy sensing to mitophagy.
Phosphorylation of ULK1 (hATG1) by AMP-activated protein kinase connects energy sensing to mitophagy.
复制标题
AMP激活的蛋白激酶对ULK1(HATG1)的磷酸化将能量传感连接到线粒体。
DOI:
10.1126/science.1196371
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发表时间:
2011-01-28
期刊:
影响因子:
--
通讯作者:
Shaw RJ
中科院分区:
文献类型:
--
作者:
Egan DF;Shackelford DB;Mihaylova MM;Gelino S;Kohnz RA;Mair W;Vasquez DS;Joshi A;Gwinn DM;Taylor R;Asara JM;Fitzpatrick J;Dillin A;Viollet B;Kundu M;Hansen M;Shaw RJ
Adenosine monophosphate-activated protein kinase (AMPK) is a conserved sensor of intracellular energy activated in response to low nutrient availability and environmental stress. In a screen for conserved substrates of AMPK, we identified ULK1 and ULK2, mammalian orthologs of the yeast protein kinase Atg1, which is required for autophagy. Genetic analysis of AMPK or ULK1 in mammalian liver and C. elegans revealed a requirement for these kinases in autophagy. In mammals, loss of AMPK or ULK1 resulted in aberrant accumulation of the autophagy adaptor p62 and defective mitophagy. Reconstitution of ULK1-deficient cells with a mutant ULK1 that cannot be phosphorylated by AMPK revealed that such phosphorylation is required for mitochondrial homeostasis and cell survival following starvation. These findings uncover a conserved biochemical mechanism coupling nutrient status with autophagy and cell survival.
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影响因子:
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作者:
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通讯作者:
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DOI:
10.1073/pnas.0902425106
发表时间:
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影响因子:
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13.3
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