The Cse4 nucleosome at each budding yeast centromere must be faithfully assembled each cell cycle to specify the site of kinetochore assembly and microtubule attachment for chromosome segregation. Although Scm3 is required for the localization of the centromeric H3 histone variant Cse4 to centromeres, its role in nucleosome assembly has not been tested. We demonstrate that Scm3 is able to mediate the assembly of Cse4 nucleosomes in vitro, but not H3 nucleosomes, as measured by a supercoiling assay. Localization of Cse4 to centromeres and the assembly activity depend on an evolutionarily conserved core motif in Scm3, but localization of the CBF3 subunit Ndc10 to centromeres does not depend on this motif. The centromere targeting domain of Cse4 is sufficient for Scm3 nucleosome assembly activity. Assembly does not depend on centromeric sequence. We propose that Scm3 plays an active role in centromeric nucleosome assembly.
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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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