Dissecting the telomere-inner nuclear membrane interface formed in meiosis.
Dissecting the telomere-inner nuclear membrane interface formed in meiosis.
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DOI:
10.1038/nsmb.3493
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发表时间:
2017-12
影响因子:
16.8
通讯作者:
Nandakumar J
中科院分区:
文献类型:
--
作者:
Pendlebury DF;Fujiwara Y;Tesmer VM;Smith EM;Shibuya H;Watanabe Y;Nandakumar J
Tethering telomeres to the inner nuclear membrane (INM) allows for homologous chromosome pairing during meiosis. A meiosis-specific protein TERB1 binds the telomeric protein TRF1 to establish telomere-INM connectivity and is essential for mouse fertility. Here we solve the structure of the human TRF1-TERB1 interface to reveal the structural basis for telomere-INM linkage. Disruption of this interface abrogates binding and compromises telomere-INM attachment in mice. An embedded CDK-phosphorylation site within the TRF1-binding region of TERB1 provides a mechanism for cap exchange, a late-pachytene phenomenon involving the dissociation of the TRF1-TERB1 complex. Indeed, further strengthening this interaction interferes with cap exchange. Finally, our biochemical analysis implicates distinct complexes for telomere-INM tethering and chromosome end protection during meiosis. Our studies unravel the structure, stoichiometry, and physiological implications underlying telomere-INM tethering, thereby providing unprecedented insights into the unique function of telomeres in meiosis.
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影响因子:
14.9
作者:
Janoušková E;Nečasová I;Pavloušková J;Zimmermann M;Hluchý M;Marini V;Nováková M;Hofr C
通讯作者:
Hofr C
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:
Mossessova, E;Lima, CD
通讯作者:
Lima, CD
影响因子:
64.5
作者:
Chikashige, Y;Tsutsumi, C;Hiraoka, Y
通讯作者:
Hiraoka, Y
影响因子:
64.5
作者:
Conrad, Michael N.;Lee, Chih-Ying;Dresser, Michael E.
通讯作者:
Dresser, Michael E.