Transformation-associated recombination (TAR) cloning in yeast is used to isolate a desired chromosomal region or gene from a complex genome without construction of a genomic library. The technique involves homologous recombination during yeast spheroplast transformation between genomic DNA and a TAR vector containing short 5' and 3' gene-specific targeting hooks. Efficient gene capture requires a high yield of transformants, and we demonstrate here that the transformant yield increases approximately 10-fold when the genomic DNA is sheared to 100-200 kb before being presented to the spheroplasts. Here we determine the most effective concentration of genomic DNA, and also show that the targeted sequences recombine much more efficiently with the vector's targeting hooks when they are located at the ends of the genomic DNA fragment. We demonstrate that the yield of gene-positive clones increases approximately 20-fold after endonuclease digestion of genomic DNA, which caused double strand breaks near the targeted sequences. These findings have led to a greatly improved protocol.
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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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