The RNA Exosome Channeling and Direct Access Conformations Have Distinct In Vivo Functions.
The RNA Exosome Channeling and Direct Access Conformations Have Distinct In Vivo Functions.
复制标题
RNA外泌体的外排构象和直接进入构象在体内具有不同的功能。
DOI:
10.1016/j.celrep.2016.08.059
复制
发表时间:
2016-09-20
期刊:
影响因子:
8.8
通讯作者:
van Hoof A
中科院分区:
文献类型:
--
作者:
Han J;van Hoof A
The RNA exosome is a 3′-5′ ribonuclease complex that is composed of nine core subunits and an essential catalytic subunit, Rrp44. Two distinct conformations of Rrp44 were revealed in previous structural studies, suggesting that Rrp44 may change its conformation to exert its function. In the channeling conformation (Rrp44ch) RNA accesses the active site after traversing the central channel of the RNA exosome, while in the other conformation (Rrp44da) RNA gains direct access to the active site. Here, we show that the Rrp44da-exosome is important for nuclear function of the RNA exosome. Defects caused by disrupting the direct access conformation are distinct from those caused by channel-occluding mutations, indicating specific functions for each conformation. Our genetic analyses provide in vivo evidence that the RNA exosome employs a direct-access route to recruit specific substrates, indicating that the RNA exosome uses alternative conformations to act on different RNA substrates.
登录
查看更多内容
影响因子:
14.9
作者:
Drazkowska K;Tomecki R;Stodus K;Kowalska K;Czarnocki-Cieciura M;Dziembowski A
通讯作者:
Dziembowski A
影响因子:
4
作者:
Di Donato, Nataliya;Neuhann, Teresa;Rump, Andreas
通讯作者:
Rump, Andreas
DOI:
10.1007/978-1-4419-7841-7_8
发表时间:
2010-01-01
期刊:
RNA EXOSOME
影响因子:
--
作者:
Butler, J. Scott;Mitchell, Phil
通讯作者:
Mitchell, Phil
影响因子:
16.8
作者:
Dziembowski, Andrzej;Lorentzen, Esben;Seraphin, Bertrand
通讯作者:
Seraphin, Bertrand
影响因子:
10.5
作者:
Hieronymus, H;Yu, MC;Silver, PA
通讯作者:
Silver, PA