HPF1 remodels the active site of PARP1 to enable the serine ADP-ribosylation of histones.
HPF1 remodels the active site of PARP1 to enable the serine ADP-ribosylation of histones.
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HPF1 重塑 PARP1 的活性位点,以实现组蛋白的丝氨酸 ADP 核糖基化。
DOI:
10.1038/s41467-021-21302-4
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发表时间:
2021-02-15
影响因子:
16.6
通讯作者:
Yun CH
中科院分区:
文献类型:
--
作者:
Sun FH;Zhao P;Zhang N;Kong LL;Wong CCL;Yun CH
Upon binding to DNA breaks, poly(ADP-ribose) polymerase 1 (PARP1) ADP-ribosylates itself and other factors to initiate DNA repair. Serine is the major residue for ADP-ribosylation upon DNA damage, which strictly depends on HPF1. Here, we report the crystal structures of human HPF1/PARP1-CAT ΔHD complex at 1.98 Å resolution, and mouse and human HPF1 at 1.71 Å and 1.57 Å resolution, respectively. Our structures and mutagenesis data confirm that the structural insights obtained in a recent HPF1/PARP2 study by Suskiewicz et al. apply to PARP1. Moreover, we quantitatively characterize the key residues necessary for HPF1/PARP1 binding. Our data show that through salt-bridging to Glu284/Asp286, Arg239 positions Glu284 to catalyze serine ADP-ribosylation, maintains the local conformation of HPF1 to limit PARP1 automodification, and facilitates HPF1/PARP1 binding by neutralizing the negative charge of Glu284. These findings, along with the high-resolution structural data, may facilitate drug discovery targeting PARP1. Once DNA breaks occur, poly(ADP-ribose) polymerase 1 (PARP1) ADP-ribosylates itself and other DNA repair factors to initiate the repair process. Here, the authors resolve the crystal structures of mouse and human HPF1, and human HPF1/PARP1 complex proving insights into PARP1 regulation.
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影响因子:
14.8
作者:
Leidecker O;Bonfiglio JJ;Colby T;Zhang Q;Atanassov I;Zaja R;Palazzo L;Stockum A;Ahel I;Matic I
通讯作者:
Matic I
影响因子:
16
作者:
Gibbs-Seymour I;Fontana P;Rack JGM;Ahel I
通讯作者:
Ahel I
影响因子:
16.6
作者:
Langelier, Marie-France;Zandarashvili, Levani;Pascal, John M.
通讯作者:
Pascal, John M.
DOI:
10.1038/nrm.2017.53
发表时间:
2017-10
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
Ray Chaudhuri A;Nussenzweig A
通讯作者:
Nussenzweig A
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