Understanding fluconazole resistance is important as it emerged as a serious clinical problem for this CYP51, sterol 14alpha-demethylase, inhibitor. One mechanism, observed first in Saccharomyces cerevisiae, was through defective sterol C5-desaturase (Erg3p) required to form the fungistatic sterol end-product resulting from CYP51 inhibition, 14alpha-methylergosta-8,24(28)-dien-3beta,6alpha-diol. Here, we report molecular changes resulting in both blocked mutants and also leaky mutants in which reduced ergosterol levels were detected. Blocked mutants exhibited nonsense and frameshift mutations, while leaky mutants contained missense mutations that were generally in conserved positions based on the alignment of sterol C5-desaturases and located mainly between residues 250 and 282.
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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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