The HP1 homolog rhino anchors a nuclear complex that suppresses piRNA precursor splicing.
The HP1 homolog rhino anchors a nuclear complex that suppresses piRNA precursor splicing.
复制标题
DOI:
10.1016/j.cell.2014.04.030
复制
发表时间:
2014-06-05
期刊:
影响因子:
64.5
通讯作者:
Theurkauf WE
中科院分区:
文献类型:
--
作者:
Zhang Z;Wang J;Schultz N;Zhang F;Parhad SS;Tu S;Vreven T;Zamore PD;Weng Z;Theurkauf WE
piRNAs guide an adaptive genome defense system that silences transposons during germline development. The Drosophila HP1 homolog Rhino is required for germline piRNA production. We show that Rhino binds specifically to the heterochromatic clusters that produce piRNA precursors, and that binding directly correlates with piRNA production. Rhino co-localizes to germline nuclear foci with Rai1/DXO related protein Cuff and the DEAD box protein UAP56, which are also required for germline piRNA production. RNA sequencing indicates that most cluster transcripts are not spliced, and that rhino, cuff and uap56 mutations increase expression of spliced cluster transcripts over 100 fold. LacI∷Rhino fusion protein binding suppresses splicing of a reporter transgene, and is sufficient to trigger piRNA production from a trans combination of sense and antisense reporters. We therefore propose that Rhino anchors a nuclear complex that suppresses cluster transcript splicing, and speculate that stalled splicing differentiates piRNA precursors from mRNAs.
登录
查看更多内容
影响因子:
16
作者:
Keller, Claudia;Adaixo, Ricardo;Buehler, Marc
通讯作者:
Buehler, Marc
影响因子:
9.2
作者:
Chen, Yu;Pane, Attilio;Schupbach, Trudi
通讯作者:
Schupbach, Trudi
影响因子:
16
作者:
Muerdter, Felix;Guzzardo, Paloma M.;Gillis, Jesse;Luo, Yicheng;Yu, Yang;Chen, Caifu;Fekete, Richard;Hannon, Gregory J.
通讯作者:
Hannon, Gregory J.
影响因子:
64.5
作者:
Beck CR;Collier P;Macfarlane C;Malig M;Kidd JM;Eichler EE;Badge RM;Moran JV
通讯作者:
Moran JV
影响因子:
4
作者:
Grewal, Shiv I. S.
通讯作者:
Grewal, Shiv I. S.