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- W2897543296 abstract "Alternative polyadenylation generates numerous 3′ mRNA isoforms that can vary in biological properties, such as stability and localization. We developed methods to obtain transcriptome-scale structural information and protein binding on individual 3′ mRNA isoforms in vivo. Strikingly, near-identical mRNA isoforms can possess dramatically different structures throughout the 3′ UTR. Analyses of identical mRNAs in different species or refolded in vitro indicate that structural differences in vivo are often due to trans-acting factors. The level of Pab1 binding to poly(A)-containing isoforms is surprisingly variable, and differences in Pab1 binding correlate with the extent of structural variation for closely spaced isoforms. A pattern encompassing single-strandedness near the 3′ terminus, double-strandedness of the poly(A) tail, and low Pab1 binding is associated with mRNA stability. Thus, individual 3′ mRNA isoforms can be remarkably different physical entities in vivo. Sequences responsible for isoform-specific structures, differential Pab1 binding, and mRNA stability are evolutionarily conserved, indicating biological function." @default.
- W2897543296 created "2018-10-26" @default.
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- W2897543296 date "2018-12-01" @default.
- W2897543296 modified "2023-09-30" @default.
- W2897543296 title "Extensive Structural Differences of Closely Related 3′ mRNA Isoforms: Links to Pab1 Binding and mRNA Stability" @default.
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- W2897543296 doi "https://doi.org/10.1016/j.molcel.2018.08.044" @default.
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