"Cotranscriptionality": the transcription elongation complex as a nexus for nuclear transactions.

"Cotranscriptionality": the transcription elongation complex as a nexus for nuclear transactions.
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“共转录性”:转录延伸复合体作为核交易的纽带。

DOI:
10.1016/j.molcel.2009.09.018
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发表时间:
2009-10-23
期刊:
影响因子:
16
通讯作者:
Bentley, David
Bentley, David
中科院分区:
生物学1区
文献类型:
--
作者:
Perales, Roberto;Bentley, David

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RNP生物发生的许多复杂过程都发生在基因上,共转录。因此,RNA结合和加工因子的靶标不是一个单独的RNA分子,而是一个转录延伸复合体(TEC),它包括不断生长的新生RNA和穿越染色质模板的RNA聚合酶以及相关的乘客蛋白。RNA成熟因子并不是唯一的核机器,其工作是围绕TEC支架以共转录方式组织的。此外,DNA修复、共价染色质修饰、核孔“基因门控”、免疫球蛋白基因超突变和姐妹染色体凝聚力都已被证明或被认为与共转录成分有关。从这个角度来看,TEC可以被视为核心内强有力的“社区组织者”。
Much of the complex process of RNP biogenesis takes place at the gene, co-transcriptionally. The target for RNA binding and processing factors is therefore not a solitary RNA molecule, but a transcription elongation complex (TEC) comprising the growing nascent RNA and RNA polymerase traversing a chromatin template with associated passenger proteins. RNA maturation factors are not the only nuclear machines whose work is organized co-transcriptionally around the TEC scaffold. In addition DNA repair, covalent chromatin modification, “gene gating” at the nuclear pore, Ig gene hypermutation, and sister chromosome cohesion have all been demonstrated or suggested to involve a co-transcriptional component. From this perspective, TEC’s can be viewed as potent “community organizers” within the nucleus.
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