Noncanonical features and modifications on the 5'-end of bacterial sRNAs and mRNAs.

Noncanonical features and modifications on the 5'-end of bacterial sRNAs and mRNAs.
复制标题

DOI:
10.1002/wrna.1509
复制
发表时间:
2019-03
期刊:
Wiley interdisciplinary reviews. RNA
影响因子:
--
通讯作者:
Serganov A
Serganov A
中科院分区:
其他
文献类型:
--
作者:
Vasilyev N;Gao A;Serganov A

文献摘要

参考文献

被引文献

相似文献

虽然许多真核转录本含有帽结构,但长期以来人们一直认为细菌 RNA 的 5' 末端不带有任何特殊修饰。在细菌中,初级转录物是由三磷酸核苷启动的转录产生的,因此在 5' 端被三磷酸化。然后,一些转录物被核酸酶处理,产生单磷酸化的 RNA,以实现特定的细胞活动。许多初级转录物还通过去除末端焦磷酸进行 5' 末端依赖性降解而转化为单磷酸化物质。最近的研究令人惊讶地揭示了细菌 RNA 5' 端化学基团的扩展。除了单磷酸化和三磷酸化部分外,一些 mRNA 和 sRNA 还包含帽状结构和 5' 端二磷酸盐。尽管近年来人们对这些基团的掺入和去除有了更好的了解,但这些修饰的生理意义仍然不清楚。这篇综述重点介绍了近期旨在鉴定和阐明细菌 RNA 5' 末端新颖修饰的研究,并讨论了修饰 RNA 的可能生理应用。
While many eukaryotic transcripts contain cap structures, it has been long thought that bacterial RNAs do not carry any special modifications on their 5′ ends. In bacteria, primary transcripts are produced by transcription initiated with a nucleoside triphosphate and are therefore triphosphorylated on 5′ ends. Some transcripts are then processed by nucleases that yield monophosphorylated RNAs for specific cellular activities. Many primary transcripts are also converted to monophosphorylated species by removal of the terminal pyrophosphate for 5′-end-dependent degradation. Recent studies surprisingly revealed an expanded repertoire of chemical groups on 5′-ends of bacterial RNAs. In addition to mono- and triphosphorylated moieties, some mRNAs and sRNAs contain cap-like structures and diphosphates on their 5′-ends. Although incorporation and removal of these groups have become better understood in recent years, the physiological significance of these modification remain obscure. This review highlights recent studies aimed at identification and elucidation of novel modifications on the 5′ ends of bacterial RNAs and discusses possible physiological applications of the modified RNAs.
DOI: 10.1093/nar/gky327
发表时间: 2018-07-27
影响因子: 14.9
作者:
Gao A;Vasilyev N;Luciano DJ;Levenson-Palmer R;Richards J;Marsiglia WM;Traaseth NJ;Belasco JG;Serganov A
通讯作者: Serganov A
DOI: 10.1101/gad.6.1.135
发表时间: 1992-01-01
影响因子: 10.5
作者:
EMORY, SA;BOUVET, P;BELASCO, JG
通讯作者: BELASCO, JG
DOI: 10.1016/j.molcel.2007.05.038
发表时间: 2007-07-06
期刊: MOLECULAR CELL
影响因子: 16
作者:
Celesnik, Helena;Deana, Atilio;Belasco, Joel G.
通讯作者: Belasco, Joel G.
DOI: 10.1038/360488a0
发表时间: 1992-12-03
期刊: NATURE
影响因子: 64.8
作者:
BOUVET, P;BELASCO, JG
通讯作者: BELASCO, JG
DOI: 10.1074/jbc.m114.634659
发表时间: 2015-04-10
影响因子: 4.8
作者:
Foley, Patricia L.;Hsieh, Ping-kun;Belasco, Joel G.
通讯作者: Belasco, Joel G.