Budding yeast RNA polymerases I and II employ parallel mechanisms of transcriptional termination

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Budding yeast RNA polymerases I and II employ parallel mechanisms of transcriptional termination.

Both RNA polymerase I and II (Pol I and Pol II) in budding yeast employ a functionally homologous "torpedo-like" mechanism to promote transcriptional termination. For two well-defined Pol II-transcribed genes, CYC1 and PMA1, we demonstrate that both Rat1p exonuclease and Sen1p helicase are required for efficient termination by promoting degradation of the nascent transcript associated with Pol ...

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Transcription 'run-on' (TRO) analysis using permeabilized yeast cells indicates that transcription terminates between 180 and 380 bp downstream of the poly(A) site of the Schizosaccharomyces pombe ura4 gene. Two signals direct RNA polymerase II (pol II) to stop transcription: the previously identified 3' end formation signals located close to the poly(A) site and an additional downstream elemen...

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Co-transcriptional RNA cleavage provides a failsafe termination mechanism for yeast RNA polymerase I

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ژورنال

عنوان ژورنال: Genes & Development

سال: 2008

ISSN: 0890-9369

DOI: 10.1101/gad.463408