An asymmetric heterodomain interface stabilizes a response regulator-DNA complex.

An asymmetric heterodomain interface stabilizes a response regulator-DNA complex.
复制标题

DOI:
10.1038/ncomms4282
复制
发表时间:
2014
影响因子:
16.6
通讯作者:
Yernool DA
Yernool DA
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Narayanan A;Kumar S;Evrard AN;Paul LN;Yernool DA

文献摘要

参考文献

被引文献

相似文献

双组分信号转导系统由组氨酸激酶和反应调节子(RR)组成,通过磷酸化触发RR的非活性到活性的转变来介导对环境线索的适应性反应。大多数激活的RR通过与启动子DNA紧密结合来调节转录。在RNA聚合酶组装之前形成稳定的RR-DNA复合物的分子基础尚不清楚。在这里,我们提出的DNA复合KdpE,OmpR/PhoB家族的成员的结构。活性样构象中的独特不对称复合物揭示了复合物中两个RR中仅一个的接收器结构域(RD)和DNA结合结构域(DBD)之间的独特分子内界面。结构-功能研究表明,这种RD-DBD界面是形成支持基因表达的稳定复合物所必需的。序列和结构的保守性表明,这些发现延伸到一个大组的RR作为转录因子。
Two-component signal transduction systems consisting of pairs of histidine kinases and response regulators (RRs) mediate adaptive responses to environmental cues via phosphorylation-triggered inactive to active transition of RRs. Most activated RRs regulate transcription by binding tightly to promoter DNA. The molecular basis for formation of stable RR-DNA complexes that precede the assembly of RNA polymerases is unclear. Here, we present structures of DNA complexed to KdpE, a member of the OmpR/PhoB family. The distinctively asymmetric complex in an active-like conformation reveals a unique intramolecular interface between the receiver domain (RD) and the DNA-binding domain (DBD) of only one of the two RRs in the complex. Structure-function studies show that this RD-DBD interface is necessary to form stable complexes that support gene expression. The conservation of sequence and structure suggest that these findings extend to a large group of RRs that act as transcriptional factors.
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
DOI: 10.1128/jb.180.14.3563-3569.1998
发表时间: 1998-07-01
影响因子: 3.2
作者:
Appleby, JL;Bourret, RB
通讯作者: Bourret, RB
DOI: 10.1016/j.mib.2009.12.009
发表时间: 2010-04
影响因子: 5.4
作者:
Gao R;Stock AM
通讯作者: Stock AM
DOI: 10.1107/s0907444909052925
发表时间: 2010-02
期刊: Acta crystallographica. Section D, Biological crystallography
影响因子: --
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者: Zwart PH
DOI: 10.1107/s0907444909042073
发表时间: 2010-01
期刊: Acta crystallographica. Section D, Biological crystallography
影响因子: --
作者:
Chen VB;Arendall WB 3rd;Headd JJ;Keedy DA;Immormino RM;Kapral GJ;Murray LW;Richardson JS;Richardson DC
通讯作者: Richardson DC