A conserved proline triplet in Val-tRNA synthetase and the origin of elongation factor P.
A conserved proline triplet in Val-tRNA synthetase and the origin of elongation factor P.
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Val-tRNA 合成酶中的保守脯氨酸三联体和延伸因子 P 的起源。
DOI:
10.1016/j.celrep.2014.09.008
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发表时间:
2014
期刊:
影响因子:
8.8
通讯作者:
Wilson,DanielN
中科院分区:
文献类型:
--
作者:
Starosta,AgataL;Lassak,Jürgen;Peil,Lauri;Atkinson,GemmaC;Woolstenhulme,ChristopherJ;Virumäe,Kai;Buskirk,Allen;Tenson,Tanel;Remme,Jaanus;Jung,Kirsten;Wilson,DanielN
Bacterial ribosomes stall on polyproline stretches and require the elongation factor P (EF-P) to relieve the arrest. Yet it remains unclear why evolution has favored the development of EF-P rather than selecting against the occurrence of polyproline stretches in proteins. We have discovered that only a single polyproline stretch is invariant across all domains of life, namely a proline triplet in ValS, the tRNA synthetase, that charges tRNAValwith valine. Here, we show that expression of ValS in vivo and in vitro requires EF-P and demonstrate that the proline triplet located in the active site of ValS is important for efficient charging of tRNAValwith valine and preventing formation of mischarged Thr-tRNAValas well as efficient growth ofE. coliin vivo. We suggest that the critical role of the proline triplet for ValS activity may explain why bacterial cells coevolved the EF-P rescue system.
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影响因子:
64.8
作者:
COLLINS, S;GROUDINE, M
通讯作者:
GROUDINE, M
DOI:
--
发表时间:
1984
影响因子:
11.1
作者:
G. Jonak;E. Knight
通讯作者:
E. Knight
影响因子:
64.5
作者:
M. Murray;B. Shilo;C. Shih;D. Cowing;Ho Wen Hsu;R. Weinberg
通讯作者:
R. Weinberg
影响因子:
64.5
作者:
S. Pfeifer;A. Goustin;J. Rydnert;T. Wahlström;L. Bjersing;D. Stéhelin;R. Ohlsson
通讯作者:
R. Ohlsson
DOI:
10.1073/pnas.81.21.6798
发表时间:
1984
影响因子:
11.1
作者:
Wiman,KG;Clarkson,B;Hayday,AC;Saito,H;Tonegawa,S;Hayward,WS
通讯作者:
Hayward,WS