Using a Saccharomyces cerevisiae strain containing an integrated copy of an H2A-lacZ fusion gene, we screened for mutants which overexpressed beta-galactosidase as a way to identify genes which regulate transcription of the histone genes. Five recessive mutants with this phenotype were shown to contain altered regulatory genes because they had lost repression of HTA1 transcription which occurs upon inhibition of chromosome replication (D. E. Lycan, M. A. Osley, and L. Hereford, Mol. Cell. Biol. 7:614-621, 1987). Periodic transcription was affected in the mutants as well, since the HTA1 gene was transcribed during the G1 and G2 phases of the cell cycle, periods in the cell cycle when this gene is normally not expressed. A similar loss of cell cycle-dependent transcription was noted for two of the three remaining histone loci, while the HO and CDC9 genes continued to be expressed periodically. Using isolated promoter elements inserted into a heterologous cycl-lacZ fusion gene, we demonstrated that the mutations fell in genes which acted through a negative site in the TRT1 H2A-H2B promoter.
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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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