The cell wall of the yeast Saccharomyces cerevisiae is a tough, rigid structure, which presents a significant barrier to the release of native or recombinant proteins from this biotechnologically important organism. There is hence a need to develop inexpensive and efficient methods of lysing yeast cells in order to release their intracellular contents. To develop such a method, a tightly regulated promoter, pMET3, has been used to control three genes involved in cell wall biogenesis: PDE2, SRB1/PSA1, and PKC1. Two of these regulation cassettes, pMET3-SRB1/PSA1 and pMET3-PKC1, have been integrated at the chromosomal loci of the respective genes in order to overcome problems of plasmid instability. Although repression of PDE2 did not cause cell lysis, cells depleted of Srb1p/Psa1p gradually lost their viability and integrity, releasing about 10% of total protein into the medium. Repression of PKC1 led to extensive cell lysis, accompanied by the release of 45% of cellular protein into the medium. A double mutant, carrying both pMET3-SRB1/PSA1 and pMET3-PKC1 cassettes in place of SRB1/PSA1 and PKC1, was constructed and found to permit the efficient release of both homologous and heterologous proteins. © 1999 John Wiley & Sons, Inc.,
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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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