Activating mutations (valine 19 or leucine 68) were introduced into the Saccharomyces cerevisiae RAS1 and RAS2 genes. In addition, a deletion was introduced into the wild-type gene and into an activated RAS2 gene, removing the segment of the coding region for the unique C-terminal domain that lies between the N-terminal 174 residues and the penultimate 8-residue membrane attachment site. At low levels of expression, a dominant activated phenotype, characterized by low glycogen levels and poor sporulation efficiency, was observed for both full-length RAS1 and RAS2 variants having impaired GTP hydrolytic activity. Lethal CDC25 mutations were bypassed by the expression of mutant RAS1 or RAS2 proteins with activating amino acid substitutions, by expression of RAS2 proteins lacking the C-terminal domain, or by normal and oncogenic mammalian Harvey ras proteins. Biochemical measurements of adenylate cyclase in membrane preparations showed that the expression of RAS2 proteins lacking the C-terminal domain can restore adenylate cyclase activity to cdc25 membranes.
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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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