Structural basis of copper-efflux-regulator-dependent transcription activation.
Structural basis of copper-efflux-regulator-dependent transcription activation.
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铜流出调节因子依赖性转录激活的结构基础
DOI:
10.1016/j.isci.2021.102449
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发表时间:
2021-05-21
期刊:
影响因子:
5.8
通讯作者:
Liu B
中科院分区:
文献类型:
--
作者:
Shi W;Zhang B;Jiang Y;Liu C;Zhou W;Chen M;Yang Y;Hu Y;Liu B
The copper efflux regulator (CueR), a representative member of mercury resistance regulator (MerR) family metalloregulators, controls expression of copper homeostasis-regulating genes in bacteria. The mechanism of transcription activation by CueR and other MerR family regulators is bending the spacer domain of promoter DNA. Here, we report the cryo-EM structures of the intact CueR-dependent transcription activation complexes. The structures show that CueR dimer bends the 19-bp promoter spacer to realign the −35 and −10 elements for recognition by σ70-RNA polymerase holoenzyme and reveal a previously unreported interaction between the DNA-binding domain (DBD) from one CueR subunit and the σ70 nonconserved region (σNCR). Functional studies have shown that the CueR-σNCR interaction plays an auxiliary role in CueR-dependent transcription, assisting the activation mechanism of bending promoter DNA by CueR dimer. Because DBDs are highly conserved in sequence and structure, this transcription-activating mechanism could be generally used by MerR family regulators. Cryo-EM structures of intact CueR-TAC complex without and with RNA synthesis CueR dimer activates transcription through bending promoter DNA The structures reveal the interactions between σNCR and CueR The σNCR/CueR interactions play an auxiliary role in CueR-dependent transcription Biological Sciences; Biochemistry; Structural Biology
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影响因子:
48
作者:
Kucukelbir, Alp;Sigworth, Fred J.;Tagare, Hemant D.
通讯作者:
Tagare, Hemant D.
影响因子:
4.4
作者:
Jiang, Yu;Chen, Biao;Yang, Sheng
通讯作者:
Yang, Sheng
DOI:
10.1107/s2059798318009324
发表时间:
2018-09-01
期刊:
Acta crystallographica. Section D, Structural biology
影响因子:
--
作者:
Afonine PV;Klaholz BP;Moriarty NW;Poon BK;Sobolev OV;Terwilliger TC;Adams PD;Urzhumtsev A
通讯作者:
Urzhumtsev A
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
4.8
作者:
Narayanan, Anoop;Vago, Frank S.;Murakami, Katsuhiko S.
通讯作者:
Murakami, Katsuhiko S.