Comprehensive polyadenylation site maps in yeast and human reveal pervasive alternative polyadenylation.

Comprehensive polyadenylation site maps in yeast and human reveal pervasive alternative polyadenylation.
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DOI:
10.1016/j.cell.2010.11.020
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发表时间:
2010-12-10
期刊:
影响因子:
64.5
通讯作者:
Milos PM
Milos PM
中科院分区:
生物学1区
文献类型:
--
作者:
Ozsolak F;Kapranov P;Foissac S;Kim SW;Fishilevich E;Monaghan AP;John B;Milos PM

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The emerging discoveries on the link between polyadenylation and disease states underline the need to fully characterize genome-wide polyadenylation states. Here, we report comprehensive maps of global polyadenylation events in human and yeast generated using refinements to the Direct RNA Sequencing technology. This direct approach provides a quantitative view of genome-wide polyadenylation states in a strand-specific manner and requires only attomole RNA quantities. The polyadenylation profiles revealed an abundance of unannotated polyadenylation sites, alternative polyadenylation patterns, and regulatory element-associated polyA+ RNAs. We observed differences in sequence composition surrounding canonical and non-canonical human polyadenylation sites, suggesting novel non-coding RNA-specific polyadenylation mechanisms in humans. Furthermore, we observed the correlation level between sense and antisense transcripts to depend on gene expression levels, supporting the view that overlapping transcription from opposite strands may play a regulatory role. Our data provide a comprehensive view of the polyadenylation state and overlapping transcription.
β-无元素前mRNA的脑特异性启动子和聚腺苷酸位点产生异常长的3'-UTR。
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