ArticlebioRxiv : the preprint server for biology2025
Transcription termination promotes splicing efficiency and fidelity in a compact genome.
Article in bioRxiv : the preprint server for biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Splicing of terminal introns is coupled to 3'-end processing by cleavage and polyadenylation (CPA) of mRNAs in mammalian genes. Whether this functional coupling is universally conserved across eukaryotes is unclear. Here we show using long read RNA sequencing in Significance Statement: Accurate gene expression requires that the enzyme that polymerizes RNA stops at the proper site (termination). In addition multiple RNA processing reactions, including removal of intervening sequences are necessary to produce mature mRNAs. How these different steps in the RNA biogenesis pathways influence each other is not well understood. In this study, we show that inactivation of termination induces mature RNA formation defects, including long RNAs that retain intervening sequences, or chimeric RNAs containing sequences from genes located next to each other on the genome. This study underscores the importance of proper termination to ensure accurate and efficient splicing of adjacent genes, which is particularly critical for compact genomes in which genes are located close to each other.
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