RecOR complex including RecR N-N dimer and RecO monomer displays a high affinity for ssDNA.
RecOR complex including RecR N-N dimer and RecO monomer displays a high affinity for ssDNA.
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包含 RecR N-N 二聚体和 RecO 单体的 RecOR 复合物对 ssDNA 表现出高亲和力
DOI:
10.1093/nar/gks889
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发表时间:
2012-11
影响因子:
14.9
通讯作者:
Liang DC
中科院分区:
文献类型:
--
作者:
Tang Q;Gao P;Liu YP;Gao A;An XM;Liu S;Yan XX;Liang DC
RecR is an important recombination mediator protein in the RecFOR pathway. RecR together with RecO and RecF facilitates RecA nucleoprotein filament formation and homologous pairing. Structural and biochemical studies of Thermoanaerobacter tengcongensis RecR (TTERecR) and its series mutants revealed that TTERecR uses the N-N dimer as a basic functional unit to interact with TTERecO monomer. Two TTERecR N-N dimers form a ring-shaped tetramer via an interaction between their C-terminal regions. The tetramer is a result of crystallization only. Hydrophobic interactions between the entire helix-hairpin-helix domains within the N-terminal regions of two TTERecR monomers are necessary for formation of a RecR functional N-N dimer. The TTERecR N-N dimer conformation also affects formation of a hydrophobic patch, which creates a binding site for TTERecO in the TTERecR Toprim domain. In addition, we demonstrate that TTERecR does not bind single-stranded DNA (ssDNA) and binds double-stranded DNA very weakly, whereas TTERecOR complex can stably bind DNA, with a higher affinity for ssDNA than double-stranded DNA. Based on these results, we propose an interaction model for the RecOR:ssDNA complex.
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DOI:
10.1073/pnas.252633399
发表时间:
2002-11-26
影响因子:
11.1
作者:
Kantake, N;Madiraju, MVVM;Kowalczykowski, C
通讯作者:
Kowalczykowski, C
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:
11.4
作者:
Lee, BI;Kim, KH;Suh, SW
通讯作者:
Suh, SW
影响因子:
3.2
作者:
LUISIDELUCA, C
通讯作者:
LUISIDELUCA, C
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