Structural Insights into Yeast Telomerase Recruitment to Telomeres.
Structural Insights into Yeast Telomerase Recruitment to Telomeres.
复制标题
酵母端粒酶招募到端粒的结构见解。
DOI:
10.1016/j.cell.2017.12.008
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发表时间:
2018-01-11
期刊:
影响因子:
64.5
通讯作者:
Lei M
中科院分区:
文献类型:
--
作者:
Chen H;Xue J;Churikov D;Hass EP;Shi S;Lemon LD;Luciano P;Bertuch AA;Zappulla DC;Géli V;Wu J;Lei M
Telomerase maintains chromosome ends from humans to yeasts. Recruitment of yeast telomerase to telomeres occurs through its Ku and Est1 subunits, via independent interactions with telomerase RNA (TLC1) and telomeric proteins Sir4 and Cdc13, respectively. However, the structures of the molecules comprising these telomerase-recruiting pathways remain unknown. Here, we report crystal structures of the Ku heterodimer and Est1 complexed with their key binding partners. Two major findings are: (1) Ku specifically binds to telomerase RNA in a distinct, yet related, manner to how it binds DNA and (2) Est1 employs two separate pockets to bind distinct motifs of Cdc13. The N-terminal Cdc13-binding site of Est1 cooperates with the TLC1-Ku-Sir4 pathway for telomerase recruitment, whereas the C-terminal interface is dispensable for binding Est1 in vitro, yet is nevertheless essential for telomere maintenance in vivo. Overall, our results integrate previous models and provide fundamentally valuable structural information regarding telomere biology.
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影响因子:
64.5
作者:
Lemieux B;Laterreur N;Perederina A;Noël JF;Dubois ML;Krasilnikov AS;Wellinger RJ
通讯作者:
Wellinger RJ
影响因子:
16.8
作者:
Fisher, TS;Taggart, AKP;Zakian, VA
通讯作者:
Zakian, VA
DOI:
10.1038/nrm2848
发表时间:
2010-03
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
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:
4.5
作者:
Lopez CR;Ribes-Zamora A;Indiviglio SM;Williams CL;Haricharan S;Bertuch AA
通讯作者:
Bertuch AA