In a screen designed to identify novel mutations in the mating response pathway of Saccharomyces cerevisiae, we isolated conditional alleles of NMT1, the gene encoding N-myristoyl transferase. Genetic data indicate that Nmt1 deficiency results in the activation of the pheromone response at the level of Gpa1, the alpha subunit of the pheromone-responsive G protein. We show that Gpa1 is myristoylated by Nmt1, and without this normally stable modification, Gpa1 is unable to inhibit pheromone signaling. This loss of Gpa1 function is probably not the result of improper subcellular localization. Unlike the mammalian G alpha i proteins alpha i and alpha o, nonmyristoylated Gpa1 is able to associate with membranes. In addition to Gpa1, our data indicate that Nmt1 myristoylates other proteins essential to vegetative growth.
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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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