Regulation of anti-sense transcription by Mot1p and NC2 via removal of TATA-binding protein (TBP) from the 3'-end of genes.

Regulation of anti-sense transcription by Mot1p and NC2 via removal of TATA-binding protein (TBP) from the 3'-end of genes.
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DOI:
10.1093/nar/gku1263
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发表时间:
2015-01
影响因子:
14.9
通讯作者:
Timmers HT
Timmers HT
中科院分区:
生物学2区
文献类型:
--
作者:
Koster MJ;Timmers HT

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对RNA聚合酶ii介导的转录至关重要的tata结合蛋白(TBP)的活性和动态性质受Mot1p和NC2复合物的控制。本研究表明,这两个TBP调节因子通过限制反义非编码RNA (ncRNA)的合成,在确保转录保真度方面发挥了“隐藏”作用。Mot1p-和nc2介导的TBP从基因3 '端结合位点释放,抑制了反义ncRNA转录本的产生。在这种情况下,Mot1p和NC2与Nrd1p-Nab3p-Sen1p (NNS)复合体合作,终止反义ncrna的合成。在一些情况下,反义ncRNA的表达会干扰同源义转录物的表达。我们的数据揭示了一种抑制反义ncRNA表达和假位点前起始复合物(pre-initiation complex, PIC)形成的新调控机制。
The activity and dynamic nature of TATA-binding protein (TBP) crucial to RNA polymerase II-mediated transcription is under control of the Mot1p and NC2 complexes. Here we show that both TBP regulatory factors play ‘hidden’ roles in ensuring transcription fidelity by restricting anti-sense non-coding RNA (ncRNA) synthesis. Production of anti-sense ncRNA transcripts is suppressed by Mot1p- and NC2-mediated release of TBP from binding sites at the 3′-end of genes. In this, Mot1p and NC2 collaborate with the Nrd1p–Nab3p–Sen1p (NNS) complex that terminates the synthesis of anti-sense ncRNAs. In several cases anti-sense ncRNA expression interferes with expression of the cognate sense transcript. Our data reveal a novel regulatory mechanism to suppress anti-sense ncRNA expression and pre-initiation complex (PIC) formation at spurious sites.
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