Spliceosomal snRNA modifications and their function.

Spliceosomal snRNA modifications and their function.
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DOI:
10.4161/rna.7.2.11207
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发表时间:
2010-03
期刊:
影响因子:
4.1
通讯作者:
Yu YT
Yu YT
中科院分区:
生物学3区
文献类型:
--
作者:
Karijolich J;Yu YT

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剪接体snrna被广泛地2'- o甲基化和假尿嘧啶化。修饰的核苷酸在物种间相对高度保守,并且通常聚集在mrna前剪接中功能重要的区域。近十年来,对剪接体snRNA修饰的机制和功能的研究日益深入。这些修饰背后的两种独立机制,rna独立(仅蛋白质)和rna依赖(rna引导),已经被发现。剪接体snRNA修饰在snRNP生物发生和剪接体组装中的作用也已得到证实。
Spliceosomal snRNAs are extensively 2'-O-methylated and pseudouridylated. The modified nucleotides are relatively highly conserved across species, and are often clustered in regions of functional importance in pre-mRNA splicing. Over the past decade, the study of the mechanisms and functions of spliceosomal snRNA modifications has intensified. Two independent mechanisms behind these modifications, RNA-independent (protein-only) and RNA-dependent (RNA-guided), have been discovered. The role of spliceosomal snRNA modifications in snRNP biogenesis and spliceosome assembly has also been verified.
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