A fundamental question in biology is how different signaling pathways use common signaling proteins to attain different developmental outcomes. The yeast transcription factor Ste12 is required in at least two distinct signaling processes, each regulated by many of the same protein kinases. Whereas Ste12-Ste12 homodimers promote transcription of genes required for mating, Ste12-Tec1 heterodimers activate genes required for invasive growth. We report that Ste12 and Tec1 undergo covalent modification by the ubiquitin-related modifier SUMO. Stimulation by mating pheromone promotes sumoylation of Ste12 and diminishes the sumoylation of Tec1. In the absence of sumoylation Tec1 is more rapidly degraded. We propose that pheromone-regulated sumoylation of Ste12 and Tec1 promotes a developmental switch from the invasive to the mating differentiation program.
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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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