In translational readthrough (TR) the ribosome continues extending the nascent protein beyond the first in-frame termination codon. Due to the lack of dedicated analyses of eukaryotic TR cases, the associated functional-evolutionary advantages are still unclear. Here, based on a variety of computational methods, we describe the structural and functional properties of previously proposed D. melanogaster and S. cerevisiae TR proteins and extensions. We found that in D. melanogaster TR affects long proteins in mainly regulatory roles. Their TR-extensions are structurally disordered and rich in binding motifs, which, together with their cell-type- and developmental stage-dependent inclusion, suggest that similarly to alternatively spliced exons they rewire cellular interaction networks in a temporally and spatially controlled manner. In contrast, yeast TR proteins are rather short and fulfil mainly housekeeping functions, like translation. Yeast extensions usually lack disorder and linear motifs, which precludes elucidating their functional relevance with sufficient confidence. Therefore we propose that by being much more restricted and by lacking clear functional hallmarks in yeast as opposed to fruit fly, TR shows remarkable parallels with alternative splicing. Additionally, the lack of conservation of TR extensions among orthologous TR proteins suggests that TR-mediated functions may be generally specific to lower taxonomic 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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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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