AMPK/ULK1-mediated phosphorylation of Parkin ACT domain mediates an early step in mitophagy.
AMPK/ULK1-mediated phosphorylation of Parkin ACT domain mediates an early step in mitophagy.
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DOI:
10.1126/sciadv.abg4544
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发表时间:
2021-04
期刊:
影响因子:
13.6
通讯作者:
Shaw RJ
中科院分区:
文献类型:
--
作者:
Hung CM;Lombardo PS;Malik N;Brun SN;Hellberg K;Van Nostrand JL;Garcia D;Baumgart J;Diffenderfer K;Asara JM;Shaw RJ
Parkin is phosphorylated on Ser108 in ACT domain by AMPK/ULK1 signaling within minutes of mitochondrial stress. The serine/threonine kinase ULK1 mediates autophagy initiation in response to various cellular stresses, and genetic deletion of ULK1 leads to accumulation of damaged mitochondria. Here we identify Parkin, the core ubiquitin ligase in mitophagy, and PARK2 gene product mutated in familial Parkinson’s disease, as a ULK1 substrate. Recent studies uncovered a nine residue (“ACT”) domain important for Parkin activation, and we demonstrate that AMPK-dependent ULK1 rapidly phosphorylates conserved serine108 in the ACT domain in response to mitochondrial stress. Phosphorylation of Parkin Ser108 occurs maximally within five minutes of mitochondrial damage, unlike activation of PINK1 and TBK1, which is observed thirty to sixty minutes later. Mutation of the ULK1 phosphorylation sites in Parkin, genetic AMPK or ULK1 depletion, or pharmacologic ULK1 inhibition, all lead to delays in Parkin activation and defects in assays of Parkin function and downstream mitophagy events. These findings reveal an unexpected first step in the mitophagy cascade.
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影响因子:
64.5
作者:
Huttlin EL;Jedrychowski MP;Elias JE;Goswami T;Rad R;Beausoleil SA;Villén J;Haas W;Sowa ME;Gygi SP
通讯作者:
Gygi SP
DOI:
10.1126/science.1196371
发表时间:
2011-01-28
期刊:
Science (New York, N.Y.)
影响因子:
--
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
通讯作者:
Shaw RJ
影响因子:
64.8
作者:
Gladkova C;Maslen SL;Skehel JM;Komander D
通讯作者:
Komander D
影响因子:
16.2
作者:
Pickrell AM;Youle RJ
通讯作者:
Youle RJ
影响因子:
8.8
作者:
Goodwin JM;Dowdle WE;DeJesus R;Wang Z;Bergman P;Kobylarz M;Lindeman A;Xavier RJ;McAllister G;Nyfeler B;Hoffman G;Murphy LO
通讯作者:
Murphy LO