Structural insights into the assembly of the 30S ribosomal subunit in vivo: functional role of S5 and location of the 17S rRNA precursor sequence.
Structural insights into the assembly of the 30S ribosomal subunit in vivo: functional role of S5 and location of the 17S rRNA precursor sequence.
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体内 30S 核糖体亚基组装的结构见解:S5 的功能作用和 17S rRNA 前体序列的位置
DOI:
10.1007/s13238-014-0044-1
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发表时间:
2014-05
期刊:
影响因子:
21.1
通讯作者:
Gao, Ning
中科院分区:
文献类型:
--
作者:
Yang, Zhixiu;Guo, Qiang;Goto, Simon;Chen, Yuling;Li, Ningning;Yan, Kaige;Zhang, Yixiao;Muto, Akira;Deng, Haiteng;Himeno, Hyouta;Lei, Jianlin;Gao, Ning
The in vivo assembly of ribosomal subunits is a highly complex process, with a tight coordination between protein assembly and rRNA maturation events, such as folding and processing of rRNA precursors, as well as modifications of selected bases. In the cell, a large number of factors are required to ensure the efficiency and fidelity of subunit production. Here we characterize the immature 30S subunits accumulated in a factor-null Escherichia coli strain (∆rsgA∆rbfA). The immature 30S subunits isolated with varying salt concentrations in the buffer system show interesting differences on both protein composition and structure. Specifically, intermediates derived under the two contrasting salt conditions (high and low) likely reflect two distinctive assembly stages, the relatively early and late stages of the 3' domain assembly, respectively. Detailed structural analysis demonstrates a mechanistic coupling between the maturation of the 5' end of the 17S rRNA and the assembly of the 30S head domain, and attributes a unique role of S5 in coordinating these two events. Furthermore, our structural results likely reveal the location of the unprocessed terminal sequences of the 17S rRNA, and suggest that the maturation events of the 17S rRNA could be employed as quality control mechanisms on subunit production and protein translation.
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影响因子:
3.2
作者:
Daigle, DM;Brown, ED
通讯作者:
Brown, ED
影响因子:
10.5
作者:
DAMMEL, CS;NOLLER, HF
通讯作者:
NOLLER, HF
影响因子:
2.9
作者:
JELENC, PC
通讯作者:
JELENC, PC
影响因子:
5.6
作者:
Dutca, Laura M.;Culver, Gloria M.
通讯作者:
Culver, Gloria M.
DOI:
10.1007/bf00267779
发表时间:
1973-01-01
期刊:
MOLECULAR & GENERAL GENETICS
影响因子:
--
作者:
ITOH, T;WITTMANN, HG
通讯作者:
WITTMANN, HG