PINK1 phosphorylates ubiquitin to activate Parkin E3 ubiquitin ligase activity.
PINK1 phosphorylates ubiquitin to activate Parkin E3 ubiquitin ligase activity.
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DOI:
10.1083/jcb.201402104
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发表时间:
2014-04-28
期刊:
影响因子:
--
通讯作者:
Youle RJ
中科院分区:
文献类型:
--
作者:
Kane LA;Lazarou M;Fogel AI;Li Y;Yamano K;Sarraf SA;Banerjee S;Youle RJ
PINK1 phosphorylates ubiquitin, which then binds to Parkin and activates its E3 ligase activity, leading to induction of selective autophagy of damaged mitochondria. PINK1 kinase activates the E3 ubiquitin ligase Parkin to induce selective autophagy of damaged mitochondria. However, it has been unclear how PINK1 activates and recruits Parkin to mitochondria. Although PINK1 phosphorylates Parkin, other PINK1 substrates appear to activate Parkin, as the mutation of all serine and threonine residues conserved between Drosophila and human, including Parkin S65, did not wholly impair Parkin translocation to mitochondria. Using mass spectrometry, we discovered that endogenous PINK1 phosphorylated ubiquitin at serine 65, homologous to the site phosphorylated by PINK1 in Parkin’s ubiquitin-like domain. Recombinant TcPINK1 directly phosphorylated ubiquitin and phospho-ubiquitin activated Parkin E3 ubiquitin ligase activity in cell-free assays. In cells, the phosphomimetic ubiquitin mutant S65D bound and activated Parkin. Furthermore, expression of ubiquitin S65A, a mutant that cannot be phosphorylated by PINK1, inhibited Parkin translocation to damaged mitochondria. These results explain a feed-forward mechanism of PINK1-mediated initiation of Parkin E3 ligase activity.
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DOI:
10.1083/jcb.201008084
发表时间:
2010-11-29
期刊:
The Journal of cell biology
影响因子:
--
作者:
Jin SM;Lazarou M;Wang C;Kane LA;Narendra DP;Youle RJ
通讯作者:
Youle RJ
影响因子:
64.8
作者:
通讯作者:
--
影响因子:
3.4
作者:
Kinoshita, Eiji;Kinoshita-Kikuta, Emiko
通讯作者:
Kinoshita-Kikuta, Emiko
影响因子:
4.4
作者:
Malik, Rainer;Lenobel, Rene;Koerner, Roman
通讯作者:
Koerner, Roman
DOI:
10.1083/jcb.201210111
发表时间:
2013-01-21
期刊:
The Journal of cell biology
影响因子:
--
作者:
Lazarou M;Narendra DP;Jin SM;Tekle E;Banerjee S;Youle RJ
通讯作者:
Youle RJ