Chromatin disassembly and reassembly, mediated by histone chaperones such as anti-silencing function 1 (Asf1), are likely to accompany all nuclear processes that occur on the DNA template. In order to gain insight into the functional conservation of Asf1 across eukaryotes, we have replaced the budding yeast Asf1 protein with Drosophila Asf1 (dAsf1) or either of the two human Asf1 (hAsf1a and hAsf1b) counterparts. We found that hAsf1b is best able to rescue the growth defect of Saccharomyces cerevisiae lacking Asf1. Moreover, dAsf1 and hAsf1b but not hAsf1a can replace the role of yeast Asf1 in protecting against replicational stress and activating the PHO5 gene, while only hAsf1a can replace the role of Asf1 in protecting against double-stranded-DNA-damaging agents. Furthermore, it appears that the interaction between Asf1 and the DNA damage checkpoint protein Rad53 is not required for Asf1's role in maintaining genomic integrity. In addition to indicating the functional conservation of the Asf1 proteins across species, these studies suggest distinct roles for the two human Asf1 proteins.
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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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