The general transcription factor IID consists of the TATA-binding protein (TBP) and multiple TBP-associated factors (TAFs). Here we report the isolation of two related TAF genes from the fission yeast Schizosaccharomyces pombe as multicopy suppressors of a temperature-sensitive mutation in the ubiquitin-conjugating enzyme gene ubcP4(+). The ubcP4(ts) mutation causes cell cycle arrest in mitosis, probably due to defects in ubiquitination mediated by the anaphase-promoting complex/cyclosome. One multicopy suppressor is the previously reported gene taf72(+), whereas the other is a previously unidentified gene named taf73(+). We show that the taf73(+) gene, like taf72(+), is essential for cell viability. The taf72(+) and taf73(+) genes encode proteins homologous to WD repeat-containing TAFs such as human TAF100, Drosophila TAF80/85, and Saccharomyces cerevisiae TAF90. We demonstrate that TAF72 and TAF73 proteins are present in the same complex with TBP and other TAFs and that TAF72, but not TAF73, is associated with the putative histone acetylase Gcn5. We also show that overexpression of TAF72 or TAF73 suppresses the cell cycle arrest in mitosis caused by a mutation in the anaphase-promoting complex/cyclosome subunit gene cut9(+). These results suggest that TAF72 and TAF73 may regulate the expression of genes involved in ubiquitin-dependent proteolysis during mitosis. Our study thus provides evidence for a possible role of WD repeat-containing TAFs in the expression of genes involved in progression through the M phase of the cell cycle.
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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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