TRF2 promotes dynamic and stepwise looping of POT1 bound telomeric overhang.
TRF2 promotes dynamic and stepwise looping of POT1 bound telomeric overhang.
复制标题
TRF2促进POT1结合的端粒突出端的动态和逐步成环。
DOI:
10.1093/nar/gkab1123
复制
发表时间:
2021-12-02
影响因子:
14.9
通讯作者:
Myong S
中科院分区:
文献类型:
--
作者:
Paul T;Liou W;Cai X;Opresko PL;Myong S
Human telomeres are protected by shelterin proteins, but how telomeres maintain a dynamic structure remains elusive. Here, we report an unexpected activity of POT1 in imparting conformational dynamics of the telomere overhang, even at a monomer level. Strikingly, such POT1-induced overhang dynamics is greatly enhanced when TRF2 engages with the telomere duplex. Interestingly, TRF2, but not TRF2ΔB, recruits POT1-bound overhangs to the telomere ds/ss junction and induces a discrete stepwise movement up and down the axis of telomere duplex. The same steps are observed regardless of the length of the POT1-bound overhang, suggesting a tightly regulated conformational dynamic coordinated by TRF2 and POT1. TPP1 and TIN2 which physically connect POT1 and TRF2 act to generate a smooth movement along the axis of the telomere duplex. Our results suggest a plausible mechanism wherein telomeres maintain a dynamic structure orchestrated by shelterin.
登录
查看更多内容
影响因子:
14.9
作者:
Lin J;Countryman P;Buncher N;Kaur P;E L;Zhang Y;Gibson G;You C;Watkins SC;Piehler J;Opresko PL;Kad NM;Wang H
通讯作者:
Wang H
影响因子:
3.4
作者:
Bera,Subhas C.;Paul,Tapas;Mishra,Padmaja P.
通讯作者:
Mishra,Padmaja P.
影响因子:
2.9
作者:
Lee HT;Sanford S;Paul T;Choe J;Bose A;Opresko PL;Myong S
通讯作者:
Myong S
影响因子:
64.5
作者:
Bandaria JN;Qin P;Berk V;Chu S;Yildiz A
通讯作者:
Yildiz A
影响因子:
64.5
作者:
Joo, Chirlmin;McKinney, Sean A.;Ha, Taekjip
通讯作者:
Ha, Taekjip