The Integrator Complex in Transcription and Development.

The Integrator Complex in Transcription and Development.
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DOI:
10.1016/j.tibs.2020.07.004
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发表时间:
2020-11
影响因子:
13.8
通讯作者:
Wilusz JE
Wilusz JE
中科院分区:
生物学1区
文献类型:
--
作者:
Mendoza-Figueroa MS;Tatomer DC;Wilusz JE

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整合子复合物在后生动物中是保守的,并控制由RNA聚合酶II转录的许多新生RNA的命运。在它的14个亚基中有一个RNA内切酶,它对小核RNA和增强子RNA的生物合成至关重要。整合子还用于触发许多蛋白质编码基因的过早转录终止,从而减弱基因表达。因此,整合子有助于形成转录组,并确保基因可以在需要时被稳健地诱导。整合子亚基在RNA核酸内切酶之外的分子功能仍然知之甚少,但有些可以独立于多亚基复合物发挥作用。在这里,我们强调了最近对Integrator的分子见解,并提出了这种复合物的错误调节如何导致发育缺陷和疾病。
The Integrator complex is conserved across metazoans and controls the fate of many nascent RNAs transcribed by RNA polymerase II. Among its 14 subunits is an RNA endonuclease that is critical for the biogenesis of small nuclear RNAs and enhancer RNAs. Integrator is further employed to trigger premature transcription termination at many protein-coding genes, thereby attenuating gene expression. Integrator thus helps shape the transcriptome and ensures genes can be robustly induced when needed. Molecular functions for Integrator subunits beyond the RNA endonuclease remain poorly understood, but some can act independently of the multi-subunit complex. Here, we highlight recent molecular insights into Integrator and propose how mis-regulation of this complex may lead to developmental defects and disease.
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