The translation termination factor eRF1 recognizes stop codons at the A site of the ribosome and induces peptidyl-tRNA hydrolysis at the peptidyl transferase centre. Recent data show that, besides translation, yeast eRF1 is also involved in cell cycle regulation. To clarify the mechanisms of non-translational functions of eRF1, we performed a genetic screen for its novel partner proteins. This screen revealed the gene for myosin light chain, Mlc1p, acting as a dosage suppressor of a temperature-sensitive mutation in the SUP45 gene encoding eRF1. eRF1 and Mlc1p are able to interact with each other and, similarly to depletion of Mlc1p, mutations in the SUP45 gene may affect cytokinesis. Immunofluorescent staining performed to determine localization of Mlc1p has shown that the sup45 mutation, which arrests cytokinesis, redistributed Mlc1p, causing its disappearance from the bud tip and the bud neck. The data obtained demonstrate that yeast eRF1 has an important non-translational function effecting cytokinesis via interaction with Mlc1p.
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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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