Transcription of the HO gene is controlled by at least eleven trans-acting regulators, which are responsible for limiting expression to mother cells and to one period in the cell cycle. A subset of these regulators and a repeated element (the cell-cycle box, CCB) are required for expression of HO during late G1. We describe gel retardation and footprinting experiments that identify a factor, CCBF (cell-cycle box factor), that binds to multiple cell-cycle box elements. We show that the SWI4 and SWI6 genes are required for formation of the CCBF-promoter complex in vitro, either as components of CCBF or as modulators of CCBF activity. The other SWI genes (SWI1, 2, 3, and 5) are not required. We also show that SWI4 and SWI6 are the only SWI genes required for expression in vivo from the CCB sequences. These observations indicate that the CCBF is responsible for cell-cycle regulation of HO and lead to the view that two of the SWI genes, SWI4 and SWI6, are specifically involved in this regulatory event.
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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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