Efficiency of yeast cell surface display can serve as a proxy screening variable for enhanced thermal stability and soluble secretion efficiency of mutant proteins. Several single-chain T cell receptor (scTCR) single-site mutants that enable yeast surface display, along with their double and triple mutant combinations, were analyzed for soluble secretion from the yeast Saccharomyces cerevisiae. While secretion of the wild-type scTCR was not detected, each of the single, double, and triple mutants were produced in yeast supernatants, with increased expression resulting from the double and triple mutants. Soluble secretion levels were strongly correlated with the quantity of active scTCR displayed as a fusion to Aga2p on the surface of yeast. Thermal stability of the scTCR mutants correlated directly with the secreted and surface levels of scTCR, with evidence suggesting that intracellular proteolysis by the endoplasmic reticulum quality control apparatus dictates display efficiency. Thus, yeast display is a directed evolution scaffold that can be used for the identification of mutant eucaryotic proteins with significantly enhanced stability and secretion properties.
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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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