A convergence of rRNA and mRNA quality control pathways revealed by mechanistic analysis of nonfunctional rRNA decay.
A convergence of rRNA and mRNA quality control pathways revealed by mechanistic analysis of nonfunctional rRNA decay.
复制标题
DOI:
10.1016/j.molcel.2009.04.017
复制
发表时间:
2009-05-14
期刊:
影响因子:
16
通讯作者:
Moore MJ
中科院分区:
文献类型:
--
作者:
Cole SE;LaRiviere FJ;Merrikh CN;Moore MJ
Eukaryotes possess numerous quality control systems that monitor both the synthesis of RNA and the integrity of the finished products. We previously demonstrated that Saccharomyces cerevisiae possesses a quality control mechanism, nonfunctional rRNA decay (NRD), capable of detecting and eliminating translationally defective rRNAs. Here we show that NRD can be divided into two mechanistically distinct pathways: one that eliminates rRNAs with deleterious mutations in the decoding site (18S NRD) and one that eliminates rRNAs containing deleterious mutations in the peptidyl transferase center (25S NRD). 18S NRD is dependent on translation elongation and utilizes the same proteins as those participating in no-go mRNA decay (NGD). In cells that accumulate 18S NRD and NGD decay intermediates, both RNA types can be seen in P-bodies. We propose that 18S NRD and NGD are different observable outcomes of the same initiating event: a ribosome stalled inappropriately at a sense codon during translation elongation.
登录
查看更多内容
影响因子:
4.8
作者:
Galani, K;Nissan, TA;Hurt, E
通讯作者:
Hurt, E
影响因子:
4.5
作者:
Fang, F;Phillips, S;Butler, JS
通讯作者:
Butler, JS
影响因子:
16.8
作者:
Dziembowski, Andrzej;Lorentzen, Esben;Seraphin, Bertrand
通讯作者:
Seraphin, Bertrand
影响因子:
11.4
作者:
Dunckley, T;Parker, R
通讯作者:
Parker, R
影响因子:
5.6
作者:
Green, R;Samaha, RR;Noller, HF
通讯作者:
Noller, HF