Spt6 Association with RNA Polymerase II Directs mRNA Turnover During Transcription.
Spt6 Association with RNA Polymerase II Directs mRNA Turnover During Transcription.
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DOI:
10.1016/j.molcel.2018.05.020
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发表时间:
2018-06-21
期刊:
影响因子:
16
通讯作者:
Strahl BD
中科院分区:
文献类型:
--
作者:
Dronamraju R;Hepperla AJ;Shibata Y;Adams AT;Magnuson T;Davis IJ;Strahl BD
Spt6 is an essential histone chaperone that mediates nucleosome reassembly during gene transcription. Spt6 also associates with RNA polymerase II (RNAPII) via a tandem Src2 homology domain. However, the significance of Spt6-RNAPII interaction is not well understood. Here, we show that Spt6 recruitment to genes and its nucleosome reassembly functions are largely independent of association with RNAPII. Instead, the Spt6-RNAPII association mediates recruitment of the Ccr4-Not de-adenylation complex to transcribed genes for essential degradation of a range of mRNAs, including mRNAs required for cell cycle progression. These findings reveal an unexpected control mechanism for mRNA turnover during transcription facilitated by a histone chaperone.
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