In a screen designed to isolate Saccharomyces cerevisiae strains defective for in vitro chromatin assembly, two temperature-sensitive (ts) mutants were obtained: rmc1 and rmc3 (remodeling of chromatin). Cloning of RMC1 and RMC3 revealed a broad role for the ubiquitin-dependent targeting cascade as the ubiquitin-protein ligases (E3s), the anaphase promoting complex (APC; RMC1 encodes APC5) and Rsp5p, respectively, were identified. Genetic studies linked the rmc1/apc5 chromatin assembly defect to APC function: rmc1/apc5 genetically interacted with apc9Delta, apc10Delta, and cdc26Delta mutants. Furthermore, phenotypes associated with the rmc1/apc5 allele were consistent with defects in chromatin metabolism and in APC function: (i) UV sensitivity, (ii) plasmid loss, (iii) accumulation of G2/M cells, and (iv) suppression of the ts defect by growth on glucose-free media and by expression of ubiquitin. On the other hand, the multifunctional E3, Rsp5p, was shown to be required for both in vitro and in vivo chromatin assembly, as well as for the proper transcriptional and translational control of at least histone H3. The finding that the distinctly different E3 enzymes, APC and Rsp5p, both play roles in regulating chromatin assembly highlight the depth of the regulatory networks at play. The significance of these findings will be discussed.
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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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