Alternative cleavage and polyadenylation: the long and short of it.

Alternative cleavage and polyadenylation: the long and short of it.
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替代性裂解和聚腺苷酸化:长而短。

DOI:
10.1016/j.tibs.2013.03.005
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发表时间:
2013-06
影响因子:
13.8
通讯作者:
Manley, James L.
Manley, James L.
中科院分区:
生物学1区
文献类型:
--
作者:
Tian, Bin;Manley, James L.

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大多数真核生物mRNAs的3‘端的成熟都离不开新生转录物的切割和多聚腺苷化(C/P)。在过去的三十年里,生化研究阐明了负责这一看似简单的C/P反应的机制。最近的基因组分析表明,大多数真核基因都有多个切割和多聚腺苷酸化位点(PAS),导致转录异构体具有不同的编码潜力和/或可变的3‘非翻译区(UTRs)。因此,选择性切割和多聚腺苷酸化(APA)是影响mRNA代谢的重要基因调节层。在这里,我们回顾了我们目前对APA的理解和这一领域的最新进展。
Cleavage and polyadenylation (C/P) of nascent transcripts is essential for maturation of the 3′ ends of most eukaryotic mRNAs. Over the past three decades, biochemical studies have elucidated the machinery responsible for the seemingly simple C/P reaction. Recent genomic analyses have indicated that most eukaryotic genes have multiple cleavage and polyadenylation sites (pAs), leading to transcript isoforms with different coding potentials and/or variable 3′ untranslated regions (UTRs). As such, alternative cleavage and polyadenylation (APA) is an important layer of gene regulation impacting mRNA metabolism. Here, we review our current understanding of APA and recent progress in this field.
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