The yeast ζ-crystallin (Zta1p) is a quinone oxidoreductase belonging to the ζ-crystallin family, with activity in the reduction of alkenal/alkenone compounds. Various biological functions have been ascribed to the members of this protein family, such as their ability to interact specifically with AU-rich sequences in mRNA, and thus they have been proposed to act as AU-rich element-binding proteins (AREBPs). In this study, we evaluated the specificity of Zta1p for RNA versus DNA by means of a novel nonisotopic method for the in vitro quantitative detection of protein · RNA complexes. Through comparative transcriptomic analysis, we found that the lack of Zta1p negatively affects the expression of a group of genes involved in amino acid biosynthesis, the argininosuccinate lyase (ARG4) gene being one of them. Here, we propose that Zta1p participates in the post-transcriptional regulation of ARG4 expression by increasing the ARG4 mRNA half-life. In addition, expression of the ζ-crystallin gene (ZTA1) is itself regulated by nutrient availability through the general amino acid control and target of rapamycin pathways. Our results shed new light on the ζ-crystallin family members from yeast to humans as stress response proteins with a bifunctional role in the detoxification of alkenal and alkenone compounds, and the regulation of gene expression.
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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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Evidence ID | Analyze ID | File | Description |
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