The Legionella effector RavZ inhibits host autophagy through irreversible Atg8 deconjugation.
The Legionella effector RavZ inhibits host autophagy through irreversible Atg8 deconjugation.
复制标题
DOI:
10.1126/science.1227026
复制
发表时间:
2012-11-23
期刊:
影响因子:
--
通讯作者:
Roy CR
中科院分区:
文献类型:
--
作者:
Choy A;Dancourt J;Mugo B;O'Connor TJ;Isberg RR;Melia TJ;Roy CR
Eukaryotic cells can use the autophagy pathway to defend against microbes that gain access to the cytosol or reside in pathogen-modified vacuoles. It remains unclear if pathogens have evolved specific mechanisms to manipulate autophagy. Here we find that the intracellular pathogen Legionella pneumophila could interfere with autophagy using the bacterial effector protein RavZ to directly uncouple Atg8 proteins attached to phosphatidylethanolamine on autophagosome membranes. RavZ hydrolyzed the amide bond between the carboxyl-terminal glycine residue and an adjacent aromatic residue in Atg8 proteins, producing an Atg8 protein that could not be reconjugated by Atg7 and Atg3. Thus, intracellular pathogens can inhibit autophagy by irreversibly inactivating Atg8 proteins during infection.
登录
查看更多内容
影响因子:
64.8
作者:
Ichimura, Y;Kirisako, T;Ohsumi, Y
通讯作者:
Ohsumi, Y
影响因子:
56.9
作者:
Nagai, H;Kagan, JC;Roy, CR
通讯作者:
Roy, CR
影响因子:
7.7
作者:
Balakirev, MY;Tcherniuk, SO;Chroboczek, J
通讯作者:
Chroboczek, J
DOI:
10.1073/pnas.1111678108
发表时间:
2011-09-06
影响因子:
11.1
作者:
O'Connor, Tamara J.;Adepoju, Yewande;Isberg, Ralph R.
通讯作者:
Isberg, Ralph R.
影响因子:
56.9
作者:
Vogel, JP;Andrews, HL;Isberg, RR
通讯作者:
Isberg, RR