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Extremely fast and incredibly close: co-transcriptional splicing in budding yeast

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Original languageEnglish
Pages (from-to)601-610
Number of pages11
Issue number5
Early online date2 Feb 2017
Publication statusE-pub ahead of print - 2 Feb 2017


RNA splicing, an essential part of eukaryotic pre-messenger RNA processing, can be simultaneous with transcription by RNA polymerase II. Here, we compare and review independent next-generation sequencing methods that jointly quantify transcription and splicing in budding yeast. For many yeast transcripts, splicing is fast, taking place within seconds of intron transcription, while polymerase is within a few dozens of nucleotides of the 3′ splice site. Ribosomal protein transcripts are spliced particularly fast and co-transcriptionally. However, some transcripts are spliced inefficiently or mainly post-transcriptionally. Intron-mediated regulation of some genes is likely to be co-transcriptional. We suggest that intermediates of the splicing reaction, missing from current datasets, may hold key information about splicing kinetics.

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