ShanghaiTech University Knowledge Management System
Crl activates transcription by stabilizing active conformation of the master stress transcription initiation factor | |
2019-12-17 | |
发表期刊 | ELIFE |
ISSN | 2050-084X |
卷号 | 8 |
发表状态 | 已发表 |
DOI | 10.7554/eLife.50928 |
摘要 | sigma(S) is a master transcription initiation factor that protects bacterial cells from various harmful environmental stresses including antibiotic pressure. Although its mechanism remains unclear, it is known that full activation of sigma(S)-mediated transcription requires a sigma(S)-specific activator, Crl. In this study, we determined a 3.80 angstrom cryo-EM structure of an Escherichia coli transcription activation complex (E. coli Crl-TAC) comprising E. coli sigma(S)-RNA polymerase (sigma(S)-RNAP) holoenzyme, Crl, and a nucleic-acid scaffold. The structure reveals that Crl interacts with domain 2 of sigma(S) (sigma(S)(2)) and the RNAP core enzyme, but does not contact promoter DNA. Results from subsequent hydrogen-deuterium exchange mass spectrometry (HDX-MS) indicate that Crl stabilizes key structural motifs within sigma(S)(2) to promote the assembly of the sigma(S)-RNAP holoenzyme and also to facilitate formation of an RNA polymerase-promoter DNA open complex (RPo). Our study demonstrates a unique DNA contact-independent mechanism of transcription activation, thereby defining a previously unrecognized mode of transcription activation in cells. |
收录类别 | SCI ; SCIE |
语种 | 英语 |
WOS研究方向 | Life Sciences & Biomedicine - Other Topics |
WOS类目 | Biology |
WOS记录号 | WOS:000503437500001 |
出版者 | ELIFE SCIENCES PUBLICATIONS LTD |
WOS关键词 | EXCHANGE MASS-SPECTROMETRY ; RNA-POLYMERASE ; ESCHERICHIA-COLI ; SIGMA-FACTOR ; PSEUDOMONAS-AERUGINOSA ; ANTIBIOTIC TOLERANCE ; STRUCTURAL BASIS ; GENE-EXPRESSION ; PROTEIN ; IDENTIFICATION |
原始文献类型 | Article |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/104978 |
专题 | 免疫化学研究所_特聘教授组_抗体结构学实验室 生命科学与技术学院_硕士生 免疫化学研究所_PI研究组_杨贝组 |
共同第一作者 | Cui, Kaijie |
通讯作者 | Zhao, Guoping; Feng, Yu; Yang, Bei; Zhang, Yu |
作者单位 | 1.Chinese Acad Sci, Key Lab Synthet Biol, CAS Ctr Excellence Mol Plant Sci, Shanghai Inst Plant Physiol & Ecol, Shanghai, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.ShanghaiTech Univ, Shanghai Inst Adv Immunochem Studies, Shanghai, Peoples R China 4.Zhejiang Univ, Sch Med, Dept Biophys, Hangzhou, Zhejiang, Peoples R China 5.Zhejiang Univ, Sch Med, Sir Run Run Shaw Hosp, Dept Pathol, Hangzhou, Zhejiang, Peoples R China 6.Chinese Natl Human Genome Ctr Shanghai, Shanghai MOST Key Lab Hlth & Dis Genom, Shanghai, Peoples R China 7.Chinese Univ Hong Kong, Prince Wales Hosp, Dept Microbiol, Li Ka Shing Inst Hlth Sci,Shatin, Hong Kong, Peoples R China 8.Fudan Univ, Sch Life Sci, Dept Microbiol, State Key Lab Genet Engn, Shanghai, Peoples R China 9.Fudan Univ, Inst Biomed Sci, Shanghai, Peoples R China |
通讯作者单位 | 免疫化学研究所 |
推荐引用方式 GB/T 7714 | Xu, Juncao,Cui, Kaijie,Shen, Liqiang,et al. Crl activates transcription by stabilizing active conformation of the master stress transcription initiation factor[J]. ELIFE,2019,8. |
APA | Xu, Juncao.,Cui, Kaijie.,Shen, Liqiang.,Shi, Jing.,Li, Lingting.,...&Zhang, Yu.(2019).Crl activates transcription by stabilizing active conformation of the master stress transcription initiation factor.ELIFE,8. |
MLA | Xu, Juncao,et al."Crl activates transcription by stabilizing active conformation of the master stress transcription initiation factor".ELIFE 8(2019). |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 |
修改评论
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。