Mechanism of 53BP1 activity regulation by RNA-binding TIRR and a designer protein.
Mechanism of 53BP1 activity regulation by RNA-binding TIRR and a designer protein.
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DOI:
10.1038/s41594-018-0083-z
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发表时间:
2018-07
影响因子:
16.8
通讯作者:
Mer G
中科院分区:
文献类型:
--
作者:
Botuyan MV;Cui G;Drané P;Oliveira C;Detappe A;Brault ME;Parnandi N;Chaubey S;Thompson JR;Bragantini B;Zhao D;Chapman JR;Chowdhury D;Mer G
Dynamic protein interaction networks such as DNA double-strand break (DSB) signaling are modulated by post-translational modifications (PTMs). The DNA repair factor 53BP1 is a rare example of a protein whose PTM binding function can be switched on and off. 53BP1 is recruited to DSBs by recognizing histone lysine methylation in chromatin, an activity directly inhibited by 53BP1-binding protein TIRR. From X-ray structures of TIRR and a designer protein bound to 53BP1, we reveal a unique regulatory mechanism where an intricate binding area, centered on an essential TIRR arginine residue, blocks the methylated chromatin-binding surface of 53BP1 (the off switch). We find that abolishing TIRR-mediated regulation in cells via a separation-of-function 53BP1 mutation brings 53BP1 to a state of hyperactivation in response to DSBs, highlighting the key inhibitory function of TIRR. We show that this 53BP1 inhibition is relieved by TIRR-interacting RNA molecules, thus providing a proof-of-principle mechanism for RNA-triggered 53BP1 recruitment to DSBs (the on switch).
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DOI:
10.4161/cc.20919
发表时间:
2012-07-01
期刊:
Cell cycle (Georgetown, Tex.)
影响因子:
--
作者:
Gatti M;Pinato S;Maspero E;Soffientini P;Polo S;Penengo L
通讯作者:
Penengo L
影响因子:
10.5
作者:
Drane, Pascal;Ouararhni, Khalid;Hamiche, Ali
通讯作者:
Hamiche, Ali
影响因子:
16
作者:
Hu Q;Botuyan MV;Cui G;Zhao D;Mer G
通讯作者:
Mer G
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:
16
作者:
Bothmer A;Robbiani DF;Di Virgilio M;Bunting SF;Klein IA;Feldhahn N;Barlow J;Chen HT;Bosque D;Callen E;Nussenzweig A;Nussenzweig MC
通讯作者:
Nussenzweig MC