Cryo-EM structure of the human CST-Polα/primase complex in a recruitment state.
Cryo-EM structure of the human CST-Polα/primase complex in a recruitment state.
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DOI:
10.1038/s41594-022-00766-y
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发表时间:
2022-08
影响因子:
16.8
通讯作者:
de Lange, Titia
中科院分区:
文献类型:
--
作者:
Cai, Sarah W.;Zinder, John C.;Svetlov, Vladimir;Bush, Martin W.;Nudler, Evgeny;Walz, Thomas;de Lange, Titia
The CST–Polα/primase complex is essential for telomere maintenance and functions to counteract resection at double-strand breaks. We report a 4.6-Å resolution cryo-EM structure of human CST–Polα/primase, captured prior to catalysis in a recruitment state stabilized by chemical cross-linking. Our structure reveals an evolutionarily conserved interaction between the C-terminal domain of the catalytic POLA1 subunit and an N-terminal expansion in metazoan CTC1. Cross-linking mass spectrometry and negative-stain EM analysis provide insight into CST binding by the flexible POLA1 N-terminus. Finally, Coats plus syndrome disease mutations previously characterized to disrupt formation of the CST–Polα/primase complex map to protein–protein interfaces observed in the recruitment state. Together, our results shed light on the architecture and stoichiometry of the metazoan fill-in machinery. Cryo-EM analysis of the human CST–Polα/primase complex reveals a metazoan-specific mode of interaction between CST and DNA polymerase α that is proposed to function in telomeric recruitment of Polα/primase for C-strand maintenance.
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影响因子:
48
作者:
Kastner, Berthold;Fischer, Niels;Stark, Holger
通讯作者:
Stark, Holger
DOI:
10.1126/science.aaz9649
发表时间:
2020-06-05
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Lim CJ;Barbour AT;Zaug AJ;Goodrich KJ;McKay AE;Wuttke DS;Cech TR
通讯作者:
Cech TR
影响因子:
64.8
作者:
Chen, Liuh-Yow;Redon, Sophie;Lingner, Joachim
通讯作者:
Lingner, Joachim
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
影响因子:
5.8
作者:
Larkin, M. A.;Blackshields, G.;Higgins, D. G.
通讯作者:
Higgins, D. G.