Here, we describe a modification of a plasmid, pT7-7 [Tabor and Richardson, Proc. Natl. Acad. Sci. USA 262 (1985) 1074-1078], that allows expression of inserted genes from the phage T7 RNA polymerase promoter. The modification is designed to suppress readthrough transcription from cryptic promoters and start points on the plasmid, in order to reduce expression in the absence of T7 RNA polymerase and thus improve the vector for use in the expression of highly toxic gene products. This vector (pT7SC) was used to stably clone the POL3 gene (encoding DNA polymerase delta) of Saccharomyces cerevisiae, which destabilizes all other cloning and expression vectors tested. Previously described expression strategies proved ineffective in overexpressing the POL3 gene. A new strategy was developed which relies on induction by infection with mutant T7 phage. This system efficiently overproduced the POL3 gene product.
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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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