Spliceosomal snRNA Epitranscriptomics.

Spliceosomal snRNA Epitranscriptomics.
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剪接体snRNA表位组学。

DOI:
10.3389/fgene.2021.652129
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发表时间:
2021
影响因子:
3.7
通讯作者:
Yu YT
Yu YT
中科院分区:
生物学3区
文献类型:
--
作者:
Morais P;Adachi H;Yu YT

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小核RNAs是剪接体的重要组成部分,催化着Pre-mRNA的剪接。SNRNAs与多种蛋白质在细胞核内形成RNA-蛋白质复合体,称为小核核糖核蛋白(SnRNPs)。SnRNPs通过识别内含子中存在的关键序列元件参与mRNA前剪接,从而形成活性剪接体。这种识别主要是通过SNRNAs和Pre-mRNA之间的碱基配对相互作用(或核苷酸-核苷酸接触)实现的。值得注意的是,用不同的RNA修饰广泛地修饰了SnRNA,这赋予了RNA独特的性质。在这里,我们回顾了目前关于SnRNA修饰的机制和功能以及它们在剪接过程中的生物学相关性的知识。
Small nuclear RNAs (snRNAs) are critical components of the spliceosome that catalyze the splicing of pre-mRNA. snRNAs are each complexed with many proteins to form RNA-protein complexes, termed as small nuclear ribonucleoproteins (snRNPs), in the cell nucleus. snRNPs participate in pre-mRNA splicing by recognizing the critical sequence elements present in the introns, thereby forming active spliceosomes. The recognition is achieved primarily by base-pairing interactions (or nucleotide-nucleotide contact) between snRNAs and pre-mRNA. Notably, snRNAs are extensively modified with different RNA modifications, which confer unique properties to the RNAs. Here, we review the current knowledge of the mechanisms and functions of snRNA modifications and their biological relevance in the splicing process.
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发表时间: 2017-07
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