NEDD8/Rub1 is the most homologous protein to ubiquitin among the ubiquitin-like proteins, and it is covalently linked to target proteins via the C-terminal glycine residue in a manner analogous to ubiquitylation. However, the mechanism(s) involved in the regulation of the NEDD8 ligation pathway remains elusive. Using the two-hybrid system, we isolated novel genes from the Schizosaccharomyces pombe cDNA library whose products bind to Uba3, which is a catalytic protein for E1-like activity of the NEDD8 pathway. We designated these genes but1(+) and but2(+) (for proteins that bind to Uba three). But1 is a nuclear protein and its overexpression caused cell elongation, which is a common phenotype of the NEDD8 pathway defective mutant in S. pombe. Furthermore, overexpression of but1(+) in ned8-temperature sensitive mutant had a deleterious effect even under permissive temperatures. Our results suggest that But1 may have an inhibitory role in the NEDD8 pathway.
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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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