Several homologues of the Drosophila Su(var)3-9 protein were recently reported to methylate lysine 9 of histone H3. Whereas this methylation signal served to recruit heterochromatin-associated proteins to transcriptionally silenced regions, histone H3 methylated at lysine 4 was associated with transcriptionally active areas of the genome. These findings suggested that the interplay between lysine 4 and 9 methylation is crucial in eukaryotic gene regulation. Here we provide evidence that Saccharomyces cerevisiae Set1p is a methyltransferase specific for lysine 4 of histone H3. In addition, we show that the absence of Set1p and lysine 4 methylation result in decreased transcription of approximately 80% of the genes in S. cerevisiae. Hierarchical clustering analysis of the set1(-) expression profile revealed a correspondence to that of a mad2(-) strain, suggesting that the transcriptional defect in the set1(-) strain may be due to changes in chromatin structure. These findings establish a central role for methylation of histone H3 lysine 4 in transcriptional regulation.
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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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