The allylamine antimycotic terbinafine prevents the formation of sterols by specifically inhibiting squalene epoxidase (SE). The biological and biochemical action of terbinafine on fungal pathogens has been well investigated, but little is known at the molecular level. Here we report the cloning, sequencing and expression of the target of terbinafine from the major pathogen Candida albicans. A C. albicans genomic DNA library was constructed in gamma ZAP Express and screened with a DNA fragment obtained by polymerase chain reaction with two primers designed from sequences common to Saccharomyces cerevisiae and rodent SEs. Two types of clone, approximately 3.9 kbp and 4.1 kbp, were isolated. Both contained an identical open reading frame of 1488 nucleotides, while a few sequence differences were found in the flanking regions, suggesting an allelic heterogeneity. The deduced protein sequence of C. albicans SE, 496 amino acids (55324 Da), is 54% and 41% identical to those of S. cerevisiae and rat, respectively. A 1.8-kb transcript was observed on Northern blots of C. albicans mRNA. Polyclonal antibodies, raised against an internal peptide of C. albicans SE, recognized a protein associated with the particulate fraction of M(r) 55000 on Western blots of C. albicans extracts. C. albicans SE was overexpressed in S. cerevisiae with the expression vector pYES2. In homogenates from S. cerevisiae overexpressing the C. albicans protein SE activity was 10-fold higher than the endogenous activity from controls.
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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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