To develop better molecular genetic tools for the diploid yeast Candida albicans, the suitability of the MET15 gene as a visual selection marker was studied. Both MET15 alleles of C. albicans CAI-4 were isolated by functional complementation of a Saccharomyces cerevisiae strain lacking the MET15 gene. Growth of this complemented strain on Pb(2+)-containing medium was associated with a colour shift of brown into white colonies. The MET15 alleles of C. albicans were located on chromosome 4 by pulsed-field gel electrophoresis and Southern blotting. A met15-deficient strain of C. albicans CAI-4 was generated using the ura blaster technique. This strain showed a brown colony colour on Pb(2+)-containing medium, which corresponded with the colony colour of a S. cerevisiae strain lacking the MET15 gene. Unexpectedly, the met15-deficient strain of C. albicans still grew on methionine-depleted medium. However, this growth was severely delayed. In addition, complementation of this strain with an integrative or replicative plasmid containing either of the MET15 alleles resulted in the formation of white transformants on Pb(2+)-containing medium. These transformants grew very well on methionine-depleted medium. Colony sectoring was obtained with the replicative plasmid and not with the integrative one. This study demonstrates that the MET15 gene of C. albicans is suitable as a visual marker and therefore can be used to identify transformants and study plasmid stability. GenBank Accession Nos for MET15 nucleotide sequences are AF188273, AF188274 and AF188275.
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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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