XLF and APLF bind Ku80 at two remote sites to ensure DNA repair by non-homologous end joining.
XLF and APLF bind Ku80 at two remote sites to ensure DNA repair by non-homologous end joining.
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DOI:
10.1038/s41594-018-0133-6
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发表时间:
2018-10
影响因子:
16.8
通讯作者:
Charbonnier JB
中科院分区:
文献类型:
--
作者:
Nemoz C;Ropars V;Frit P;Gontier A;Drevet P;Yu J;Guerois R;Pitois A;Comte A;Delteil C;Barboule N;Legrand P;Baconnais S;Yin Y;Tadi S;Barbet-Massin E;Berger I;Le Cam E;Modesti M;Rothenberg E;Calsou P;Charbonnier JB
The Ku70-Ku80 (Ku) heterodimer binds rapidly and tightly to ends of DNA double-strand breaks and recruits several factors of the Non-Homologous End Joining (NHEJ) pathway through molecular mechanisms that remain unclear. Here, we describe the crystal structures of the Ku-binding motifs (KBM) of the NHEJ proteins APLF (A-KBM) and XLF (X-KBM) bound to a Ku-DNA complex. The two KBMs motifs bind on remote sites of Ku80 α/β domain. The X-KBM occupies an internal pocket formed after an unprecedented large outward rotation of the Ku80 α/β domain. We reveal independent recruitment at laser-irradiated sites of the APLF-interacting protein XRCC4 and of XLF through the respective binding of A- and X-KBMs to Ku80. Finally, we show that mutations on the X-KBM and A KBM binding sites in Ku80 compromises efficiency and accuracy of end-joining and cellular radiosensitivity. A- and X-KBMs may represent two initial anchorage points necessary to build the NHEJ intricate interactions network.
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影响因子:
13.8
作者:
Bieniossek C;Imasaki T;Takagi Y;Berger I
通讯作者:
Berger I
影响因子:
64.8
作者:
Ahel, Ivan;Ahel, Dragana;West, Stephen C.
通讯作者:
West, Stephen C.
DOI:
10.1074/jbc.m116.751867
发表时间:
2016-12-30
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Hammel M;Yu Y;Radhakrishnan SK;Chokshi C;Tsai MS;Matsumoto Y;Kuzdovich M;Remesh SG;Fang S;Tomkinson AE;Lees-Miller SP;Tainer JA
通讯作者:
Tainer JA
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
影响因子:
4.8
作者:
Gunn, Amanda;Bennardo, Nicole;Stark, Jeremy M.
通讯作者:
Stark, Jeremy M.