Ubp3/Bre5 complex is a substrate-specific deubiquitylating enzyme which mediates deubiquitylation of Sec23, a component of the COPII complex involved in the transport between endoplasmic reticulum and Golgi apparatus. Here we show that ubiquitylation of Sec23 is controlled by the Rsp5 ubiquitin ligase both in vivo and in vitro. We have recently identified Cdc48, a chaperone-like that plays a key role in the proteasomal escort pathway, as a partner of the Ubp3/Bre5 complex. We now found that cdc48 thermosensitive mutant cells not only accumulate ubiquitylated form of Sec23 but also display a stabilization of this protein at the restrictive temperature. This indicates that Cdc48 controls the proteasome-mediated degradation of Sec23. Our data favor the idea that Cdc48 plays a key role in deciphering fates of ubiquitylated Sec23 to degradation or deubiquitylation/stabilization via its cofactors.
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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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