The yeast Hat1p/Hat2p type B histone acetyltransferase complex is localized to both the cytoplasm and nucleus. We isolate the nuclear form of the Hat1p/Hat2p complex and find that it copurifies with the product of the uncharacterized open reading frame YLL022C (named Hif1p). The functional significance of the association of Hif1p with the Hat1p/Hat2p complex is confirmed by the observation that hif1Delta and hat1Delta strains display similar defects in telomeric silencing and DNA double-strand break repair. Hif1p is a histone chaperone that selectively interacts with histones H3 and H4. Hif1p is also a chromatin assembly factor, promoting the deposition of histones in the presence of a yeast cytosolic extract. In vivo, the nuclear Hat1p/Hat2p/Hif1p complex is bound to acetylated histone H4, as well as histone H3. The association of Hif1p with acetylated H4 requires Hat1p and Hat2p providing a link between type B histone acetyltransferases and chromatin 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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