The Bur1-Bur2 and Paf1 complexes function during transcription elongation and affect histone modifications. Here we describe new roles for Bur1-Bur2 and the Paf1 complex. We find that histone H3 K36 tri-methylation requires specific components of the Paf1 complex and that K36 tri-methylation is more strongly affected at the 5' ends of genes in paf1delta and bur2delta strains in parallel with increased acetylation of histones H3 and H4. Interestingly, the 5' increase in histone acetylation is independent of K36 methylation, and therefore is mechanistically distinct from the methylation-driven deacetylation that occurs at the 3' ends of genes. Finally, Bur1-Bur2 and the Paf1 complex have a second methylation-independent function, since bur2delta set2delta and paf1delta set2delta double mutants display enhanced histone acetylation at the 3' ends of genes and increased cryptic transcription initiation. These findings identify new functions for the Paf1 and Bur1-Bur2 complexes, provide evidence that histone modifications at the 5' and 3' ends of coding regions are regulated by distinct mechanisms, and reveal that the Bur1-Bur2 and Paf1 complexes repress cryptic transcription through a Set2-independent pathway.
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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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