Messenger RNA degradation in bacterial cells.

Messenger RNA degradation in bacterial cells.
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DOI:
10.1146/annurev-genet-120213-092340
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发表时间:
2014
影响因子:
11.1
通讯作者:
Belasco JG
Belasco JG
中科院分区:
生物学1区
文献类型:
--
作者:
Hui MP;Foley PL;Belasco JG

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mRNA降解是控制细菌细胞中基因表达的重要机制。这一过程涉及一系列细胞核酸内切酶和核酸外切酶的有序作用,其中一些是通用的,另一些仅存在于某些物种中。它们在辅助酶的帮助下发挥作用,辅助酶共价修饰RNA的5'或3'末端或解开碱基配对区域。由5'末端或内部位点的起始事件触发,mRNA衰变以不同的速率发生,所述速率是转录物特异性的并且由诸如RNA序列和结构、翻译核糖体和结合的sRNA或蛋白质的特征控制。为了响应环境的提示,细菌能够通过调节细胞核糖核酸酶的浓度或比活性或通过揭示细胞毒素的mRNA降解活性来协调mRNA寿命的广泛变化。
mRNA degradation is an important mechanism for controlling gene expression in bacterial cells. This process involves the orderly action of a battery of cellular endonucleases and exonucleases, some universal and others present only in certain species. They function with the assistance of ancillary enzymes that covalently modify the 5’ or 3’ end of RNA or unwind base-paired regions. Triggered by initiating events at either the 5’ terminus or an internal site, mRNA decay occurs at diverse rates that are transcript-specific and governed by features such as RNA sequence and structure, translating ribosomes, and bound sRNAs or proteins. In response to environmental cues, bacteria are able to orchestrate widespread changes in mRNA lifetimes by modulating the concentration or specific activity of cellular ribonucleases or by unmasking the mRNA-degrading activity of cellular toxins.
DOI: 10.1128/jb.181.11.3587-3590.1999
发表时间: 1999-06-01
影响因子: 3.2
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