Yeast peptide: N-glycanase (PNGase) is involved in the proteasomal degradation of misfolded glycoproteins where it interacts with the DNA repair protein Rad23 as first detected in a yeast two-hybrid assay and subsequently confirmed by biochemical in vivo analyses. Limited proteolysis of PNGase with trypsin led to the removal of both an N-terminal and a C-terminal stretch. Based on these truncations the N-terminal region of yeast PNGase was identified as being responsible for binding to Rad23. Secondary structure predictions of this region suggest that it is composed of a single, solvent-exposed alpha-helix. The interaction between PNGase and Rad23 was studied using surface plasmon resonance revealing an equilibrium binding constant of approximately 2.5 microM. The oligomeric nature of Rad23 was also investigated using sedimentation equilibrium analysis. Although Rad23 exists as a dimer in solution, the monomeric form of Rad23 associates with a PNGase monomer in a 1:1 stoichiometric ratio.
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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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