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• W4381856304 abstract "ABSTRACT Cleavage and polyadenylation is necessary for the formation of mature mRNA molecules. The rate at which this process occurs can determine the temporal availability of mRNA for subsequent function throughout the cell and is likely tightly regulated. Despite advances in high-throughput approaches for global kinetic profiling of RNA maturation, genome-wide 3’ end cleavage rates have never been measured. Here, we describe a novel approach to estimate the rates of cleavage, using metabolic labeling of nascent RNA, high-throughput sequencing, and mathematical modeling. Using in-silico simulations of nascent RNA-seq data, we show that our approach can accurately and precisely estimate cleavage half-lives for both constitutive and alternative sites. We find that 3’ end cleavage is fast on average, with half-lives under a minute, but highly variable across individual sites. Rapid cleavage is promoted by the presence of canonical sequence elements and an increased density of polyadenylation signals near a cleavage site. Finally, we find that cleavage rates are associated with the localization of RNA Polymerase II at the end of a gene and faster cleavage leads to quicker degradation of downstream read-through RNA. Our findings shed light on the features important for efficient 3’ end cleavage and the regulation of transcription termination." @default.
• W4381856304 created "2023-06-25" @default.
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• W4381856304 date "2023-06-22" @default.
• W4381856304 modified "2023-09-30" @default.
• W4381856304 title "Genome-wide kinetic profiling of pre-mRNA 3’ end cleavage" @default.
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• W4381856304 doi "https://doi.org/10.1101/2023.06.21.545926" @default.
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