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KMID : 0578320140370090644
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Molecules and Cells
2014 Volume.37 No. 9 p.644 ~ p.649
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New Links between mRNA Polyadenylation and Diverse Nuclear Pathways
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Di Giammartino Dafne Campigli
Manley James L.
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Abstract
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The 3′ ends of most eukaryotic messenger RNAs must undergo a maturation step that includes an endonuc-leolytic cleavage followed by addition of a polyadenylate tail. While this reaction is catalyzed by the action of only two enzymes it is supported by an unexpectedly large number of proteins. This complexity reflects the necessity of coordinating this process with other nuclear events, and growing evidence indicates that even more factors than previously thought are necessary to connect 3′ processing to additional cellular pathways. In this review we summarize the current understanding of the molecular machinery involved in this step of mRNA maturation, focusing on new core and auxiliary proteins that connect polyadenylation to splicing, DNA damage, transcription and cancer.
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KEYWORD
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3′ end processing, cleavage, polyadenylation, pre-mRNA
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