Urm1 is a modifier protein that is conjugated to substrate proteins through thioester formation with the E1-like enzyme, Uba4. Here is shown that the lack of urmylation causes derepression of the GAP1 gene (encoding a nitrogen-regulated broad-spectrum amino acid-scavenging permease) in the presence of rich nitrogen sources, and simultaneous inhibition of the expression of CIT2, a TCA-cycle gene involved in the production of glutamate and glutamine. This effect is dependent on the TORC1- and nutrient-regulated transcriptional factors, Nil1p and Gln3p. Evidence is provided that, in the absence of urmylation, nuclear/cytosolic shuffling of both transcriptional factors is altered, ultimately leading to inability to repress GAP1 gene in the presence of a rich nitrogen source. Altogether, the data presented here indicate an important role of the urmylation pathway in regulating the expression of genes involved in sensing and controlling amino acids levels.
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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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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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