An autoinhibited state in the structure of Thermotoga maritima NusG.

An autoinhibited state in the structure of Thermotoga maritima NusG.
复制标题

DOI:
10.1016/j.str.2012.12.015
复制
发表时间:
2013-03-05
期刊:
影响因子:
5.7
通讯作者:
Schweimer, Kristian
Schweimer, Kristian
中科院分区:
生物学2区
文献类型:
--
作者:
Droegemueller, Johanna;Stegmann, Christian M.;Mandal, Angshuman;Steiner, Thomas;Burmann, Bjoern M.;Gottesman, Max E.;Woehrl, Birgitta M.;Roesch, Paul;Wahl, Markus C.;Schweimer, Kristian

文献摘要

参考文献

被引文献

相似文献

NusG是一种保守的调节蛋白,与RNA聚合酶(RNAP)和其他蛋白质相互作用,形成调节转录的多组分复合物。海栖热袍菌NusG(Thermotoga maritima NusG,TmNusG)的晶体结构为三结构域结构,包括保守的氨基末端(NTD)和羧基末端(CTD)结构域,NTD中插入了一个物种特异性结构域。NTD和CTD彼此直接接触,封闭了NTD用于结合RNAP的表面和CTD上与转录终止因子Rho或转录抗终止因子NusE相互作用的表面。NMR光谱证实了分子内的NTD-CTD相互作用的最佳生长温度的海栖热袍菌。结构域相互作用涉及开放和闭合状态之间的动态平衡,并显著有助于蛋白质的整体折叠稳定性。野生型TmNusG和缺失变体不能替代内源性大肠杆菌NusG,表明TmNusG的NTD-CTD相互作用代表自抑制状态。
NusG is a conserved regulatory protein interacting with RNA polymerase (RNAP) and other proteins to form multi-component complexes that modulate transcription. The crystal structure of Thermotoga maritima NusG (TmNusG) shows a three-domain architecture, comprising well conserved amino-terminal (NTD) and carboxy-terminal (CTD) domains with an additional, species-specific domain inserted into the NTD. NTD and CTD directly contact each other, occluding a surface of the NTD for binding to RNAP and a surface on the CTD interacting either with transcription termination factor Rho or transcription anti-termination factor NusE. NMR spectroscopy confirmed the intra-molecular NTD-CTD interaction up to the optimal growth temperature of Thermotoga maritima. The domain interaction involves a dynamic equilibrium between open and closed states and contributes significantly to the overall fold stability of the protein. Wild type TmNusG and deletion variants could not replace for endogenous Escherichia coli NusG, suggesting that the NTD-CTD interaction of TmNusG represents an auto-inhibited state.
DOI: 10.1128/jb.178.14.4089-4098.1996
发表时间: 1996-07-01
影响因子: 3.2
作者:
Liao, DQ;Lurz, R;Dennis, PP
通讯作者: Dennis, PP
DOI: 10.1073/pnas.0405883101
发表时间: 2004-09-21
影响因子: 11.1
作者:
Bonin, I;Mühlberger, R;Wahl, MC
通讯作者: Wahl, MC
DOI: 10.1002/prot.10286
发表时间: 2003-02-15
期刊: PROTEINS-STRUCTURE FUNCTION AND GENETICS
影响因子: --
作者:
Lovell, SC;Davis, IW;Richardson, DC
通讯作者: Richardson, DC
DOI: 10.1038/20601
发表时间: 1999-05-27
期刊: NATURE
影响因子: 64.8
作者:
Nelson, KE;Clayton, RA;Fraser, CM
通讯作者: Fraser, CM
DOI: 10.1107/s0907444904026460
发表时间: 2004-12-01
影响因子: 2.2
作者:
Krissinel, E;Henrick, K
通讯作者: Henrick, K