The CCR4 protein is specifically required for the increased transcription at the ADH2 locus resulting from mutations in the SPT10 (CRE1) and SPT6 (CRE2) genes and is also required for the expression of ADH2 and other genes under non-fermentative growth conditions. The mechanism by which mutations in CCR4 suppress defects in SPT10 and SPT6 was examined. The SPT10 and SPT6 genes were shown not to control CCR4 mRNA or protein expression nor did SPT10 and SPT6 proteins co-immuneprecipitate with CCR4. CCR4 association with two other proteins, 195 and 185 kDa in size, was unaffected by either spt10 or spt6 mutations. Also, the ability of CCR4 to activate transcription when fused to the LexA DNA binding domain was not specifically enhanced by defects in either SPT10 or SPT6. These results suggest that SPT10 and SPT6, in negatively regulating transcription at ADH2, act through a factor that requires CCR4 function, but do not regulate CCR4 expression, control its activity, physically interact with it, or affect its binding to other factors. The relationship of CCR4 to the group of general transcription factors, SNF2, SNF5, SNF6 and SWI1 and SWI3, which comprise a multisubunit complex required for ADH2 and other genes' expression, was also examined. CCR4 protein expression was not controlled by these factors nor did they co-immuneprecipitate or associate with CCR4. In addition, a ccr4 mutation had little effect on an ADH2 promoter alteration in contrast to the large effects displayed by mutations in SNF2 and SNF5. These data suggest that CCR4 acts by a separate mechanism from that used by the SNF/SWI general transcription factors in affecting gene expression.
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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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