RNA regulatory elements and polyadenylation in plants.

RNA regulatory elements and polyadenylation in plants.
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DOI:
10.3389/fpls.2011.00109
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发表时间:
2011
影响因子:
5.6
通讯作者:
Hunt AG
Hunt AG
中科院分区:
生物学2区
文献类型:
--
作者:
Hunt AG

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替代性聚腺苷酸位点选择(也称为替代性聚腺苷酸化,或 APA)有可能以定性和定量的方式影响基因表达。 APA 可能影响植物中多达 82% 的表达基因。 APA 的后果包括产生具有不同 3'-UTR(因此具有不同的调控潜力)的转录本以及具有不同蛋白质编码潜力的转录本。对可能的 APA 的全基因组研究表明,其与前 mRNA 剪接之间存在联系,并表明影响剪接效率的 RNA 调控元件与新的内含子 Poly(A) 位点的识别之间存在巧合或合作。这些研究还提出了存在一类新型多腺苷酸化相关顺式元件的可能性,这些元件与充分表征的植物多腺苷酸化信号不同。然而,许多潜在的 APA 事件尚未与可识别的顺式元素相关。该领域的现状揭示了 APA 的广泛范围,以及研究植物中 Poly(A) 位点选择和调控机制的大量机会。
Alternative poly(A) site choice (also known as alternative polyadenylation, or APA) has the potential to affect gene expression in qualitative and quantitative ways. APA may affect as many as 82% of all expressed genes in a plant. The consequences of APA include the generation of transcripts with differing 3′-UTRs (and thus differing regulatory potential) and of transcripts with differing protein-coding potential. Genome-wide studies of possible APA suggest a linkage with pre-mRNA splicing, and indicate a coincidence of and perhaps cooperation between RNA regulatory elements that affect splicing efficiency and the recognition of novel intronic poly(A) sites. These studies also raise the possibility of the existence of a novel class of polyadenylation-related cis elements that are distinct from the well-characterized plant polyadenylation signal. Many potential APA events, however, have not been associated with identifiable cis elements. The present state of the field reveals a broad scope of APA, and also numerous opportunities for research into mechanisms that govern both choice and regulation of poly(A) sites in plants.
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