We have made constructs that join the promoter sequences and a portion of the coding region of the Saccharomyces cerevisiae HIS4 and GAL1 genes and the E. coli lacZ gene to the sixth codon of the S. cerevisiae URA3 gene (encodes orotidine-5'-phosphate (OMP) decarboxylase) to form three in frame protein fusions. In each case the fusion protein has OMP decarboxylase activity as assayed by complementation tests and this activity is properly regulated. A convenient cassette consisting of the URA3 segment plus some immediately proximal amino acids of HIS4C is available for making URA3 fusions to other proteins of interest. URA3 fusions offer several advantages over other systems for gene fusion analysis: the URA3 specified protein is small and cytosolic; genetic selections exist to identify mutants with either increased or decreased URA3 function in both yeast (S. cerevisiae and Schizosaccharomyces pombe) and bacteria (Escherichia coli and Salmonella typhimurium); and a sensitive OMP decarboxylase enzyme assay is available. Also, OMP decarboxylase activity is present in mammals, Drosophila and plants, so URA3 fusions may eventually be applicable in these other organisms as well.
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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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