At the 3' ends of protein-coding genes, RNA polymerase (Pol) II is dephosphorylated at tyrosine residues (Tyr1) of its C-terminal domain (CTD). In addition, the associated cleavage-and-polyadenylation factor (CPF) cleaves the transcript and adds a poly(a) tail. Whether these events are coordinated and how they lead to transcription termination remains poorly understood. Here we show that CPF from Saccharomyces cerevisiae is a Pol II-CTD phosphatase and that the CPF subunit Glc7 dephosphorylates Tyr1 in vitro. In vivo, the activity of Glc7 is required for normal Tyr1 dephosphorylation at the polyadenylation site, for recruitment of termination factors Pcf11 and Rtt103 and for normal Pol II termination. These results show that transcription termination involves Tyr1 dephosphorylation of the CTD and indicate that pre-mRNA processing by CPF and transcription termination are coupled via Glc7-dependent Pol II-Tyr1 dephosphorylation.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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| Evidence ID | Analyze ID | File | Description |
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