The LEU2 gene, coding for beta-isopropylmalate dehydrogenase, of the yeast Kluyveromyces marxianus was isolated and sequenced. An open reading frame, coding for a protein with a molecular weight of 38 kDa was found. Comparison of the deduced amino acid sequence of the LEU2 gene with the corresponding enzymes of three other yeasts and two thermophilic bacteria, revealed extensive sequence similarities. The cloned gene could complement a leuB mutation of Escherichia coli and a leu2 mutation of Saccharomyces cerevisiae. Using orthogonal field alternation gel electrophoresis, the genomic copy of the gene was found to be located at chromosome VI or VII. Analysis of the 5'-untranslated region indicated the presence of a putative binding site for the LEU3 protein, which is involved in the leucine-specific regulation of transcription. We show that the cloned gene can be used for the construction of a non-reverting K. marxianus leu2 mutant.
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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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