ATG12 conjugation to ATG3 regulates mitochondrial homeostasis and cell death.
ATG12 conjugation to ATG3 regulates mitochondrial homeostasis and cell death.
复制标题
DOI:
10.1016/j.cell.2010.07.018
复制
发表时间:
2010-08-20
期刊:
影响因子:
64.5
通讯作者:
Debnath J
中科院分区:
文献类型:
--
作者:
Radoshevich L;Murrow L;Chen N;Fernandez E;Roy S;Fung C;Debnath J
ATG12, an ubiquitin-like modifier required for macroautophagy, has a single known conjugation target, another autophagy regulator called ATG5. Here, we identify ATG3 as a substrate for ATG12 conjugation. ATG3 is the E2-like enzyme necessary for ATG8/LC3 lipidation during autophagy. ATG12-ATG3 complex formation requires ATG7 as the E1 enzyme and ATG3 autocatalytic activity as the E2, resulting in the covalent linkage of ATG12 onto a single lysine on ATG3. Surprisingly, disrupting ATG12 conjugation to ATG3 does not affect starvation-induced autophagy. Rather, the lack of ATG12-ATG3 complex formation produces an expansion in mitochondrial mass and inhibits cell death mediated by mitochondrial pathways. Overall, these results unveil a role for ATG12-ATG3 in mitochondrial homeostasis, and implicate the ATG12 conjugation system in cellular functions distinct from the early steps of autophagosome formation.
登录
查看更多内容
DOI:
10.1083/jcb.152.4.657
发表时间:
2001-02-19
期刊:
The Journal of cell biology
影响因子:
--
作者:
Mizushima N;Yamamoto A;Hatano M;Kobayashi Y;Kabeya Y;Suzuki K;Tokuhisa T;Ohsumi Y;Yoshimori T
通讯作者:
Yoshimori T
影响因子:
3.5
作者:
Chen H;Chan DC
通讯作者:
Chan DC
影响因子:
64.8
作者:
Ichimura, Y;Kirisako, T;Ohsumi, Y
通讯作者:
Ohsumi, Y
影响因子:
4.8
作者:
Nemoto, T;Tanida, I;Kominami, E
通讯作者:
Kominami, E
影响因子:
4.8
作者:
Debnath, J;Muthuswamy, SK;Brugge, JS
通讯作者:
Brugge, JS