Circular RNAs: diversity of form and function.

Circular RNAs: diversity of form and function.
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DOI:
10.1261/rna.047126.114
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发表时间:
2014-12
期刊:
RNA (New York, N.Y.)
影响因子:
--
通讯作者:
Parker R
Parker R
中科院分区:
其他
文献类型:
--
作者:
Lasda E;Parker R

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现在很清楚的是,在生物系统中存在多种环状RNA。环状RNA可以通过直接连接线性RNA的5′和3′末端来产生,作为RNA加工反应中的中间体,或者通过“反向剪接”来产生,其中下游5′剪接位点(剪接供体)连接到上游3′剪接位点(剪接受体)。环状RNA具有独特的性质,包括RNA滚环扩增的潜力,重新排列基因组信息顺序的能力,免受核酸外切酶的影响,以及对RNA折叠的限制。环状RNA可以作为类病毒和病毒复制的模板,作为RNA加工反应的中间体,作为顺式转录的调节因子,作为snoRNA和作为miRNA海绵。在此,我们回顾了环状RNA的广度,它们的生物发生和代谢,以及它们已知和预期的功能。
It is now clear that there is a diversity of circular RNAs in biological systems. Circular RNAs can be produced by the direct ligation of 5′ and 3′ ends of linear RNAs, as intermediates in RNA processing reactions, or by “backsplicing,” wherein a downstream 5′ splice site (splice donor) is joined to an upstream 3′ splice site (splice acceptor). Circular RNAs have unique properties including the potential for rolling circle amplification of RNA, the ability to rearrange the order of genomic information, protection from exonucleases, and constraints on RNA folding. Circular RNAs can function as templates for viroid and viral replication, as intermediates in RNA processing reactions, as regulators of transcription in cis, as snoRNAs, and as miRNA sponges. Herein, we review the breadth of circular RNAs, their biogenesis and metabolism, and their known and anticipated functions.
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