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mRNA 3 end processing and more--multiple functions of mammalian cleavage factor I-68 Ruepp MD; Schumperli D; Barabino SMWiley Interdiscip Rev RNA 2011[Jan]; 2 (1): 79-91The formation of defined 3(') ends is an important step in the biogenesis of mRNAs. In eukaryotic cells, all mRNA 3(') ends are generated by endonucleolytic cleavage of primary transcripts in reactions that are essentially posttranscriptional. Nevertheless, 3(') end formation is tightly connected to transcription in vivo, and a link with mRNA export to the cytoplasm has been postulated. Here, we briefly review the current knowledge about the two types of mRNA 3(') end processing reactions, cleavage/polyadenylation and histone RNA processing. We then focus on factors shared between these two reactions. In particular, we discuss evidence for new functions of the mammalian cleavage factor I subunit CF I(m) 68 in histone RNA 3(') processing and in the export of mature mRNAs from the nucleus to the cytoplasm.|Animals[MESH]|Histones/genetics[MESH]|Humans[MESH]|Mammals/*genetics/metabolism[MESH]|Models, Biological[MESH]|RNA 3' End Processing/*physiology[MESH]|RNA, Messenger/*genetics/*metabolism[MESH]|mRNA Cleavage and Polyadenylation Factors/genetics/metabolism/*physiology[MESH] |
