A key protein component (CBF3) of the budding yeast (S. cerevisiae) centromere/kinetochore has been purified and characterized. CBF3 is a 240 kd multisubunit protein complex that binds specifically to the yeast wild-type centromere DNA (CEN), but not to nonfunctional CEN DNA containing a single base substitution in the critical CDEIII consensus sequence. When purified by affinity chromatography, CBF3 contains three protein components: CBF3A (110 kd), CBF3B (64 kd), and CBF3C (58 kd). Highly purified CBF3 requires the presence of a separate assembly factor or chaperone activity to bind to CEN DNA. Treatment with phosphatase inactivates CBF3, indicating that at least one of the CBF3 subunits must be phosphorylated for DNA binding to occur. A 56 bp region including the 26 bp CDEIII consensus is protected from DNAase I cleavage in the CBF3-CEN DNA complex.
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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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