The PHO85 gene is a negative regulator of the PHO system in the yeast Saccharomyces cerevisiae and encodes a protein kinase (Pho85) highly homologous to the Cdc28 kinase (Cdc28). Ten cyclin-like proteins are known to interact with Pho85, and combination with different cyclins is believed to be responsible for distinct Pho85 functions, including phosphate metabolism, carbon source utilization and cell cycle regulation. However, only a limited number of substrates of Pho85 kinase, including Pho4, Gsy2 and Sicl, have so far been identified. To search for more targets of Pho85 and to clarify the genetic control mechanisms by Pho85 kinase in these cellular functions, we carried out a genome-wide analysis of the effect of a pho85Delta mutation on gene expression. We found that expression of various genes involved in carbon metabolism are affected by the mutation and that among them, UGP1 promoter activity was increased in the absence of Pho85 kinase. This increase in the promoter activity was not observed in a pho4Delta mutant or with a mutant UGP1 promoter that is devoid of putative Pho4 and Bas2 binding sites, suggesting that UGP1 expression is modulated by Pho85 through Pho4. We also found that expression of several Pho85-cyclin genes were altered by the carbon source, the growth phase and Pho85 kinase itself.
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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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