Candida parapsilosis is an important human pathogen, responsible for severe cases of systemic candidiasis and one of the leading causes of mortality in neonates. In this report, we describe the first system for genetic manipulation of C. parapsilosis. We isolated and subsequently determined DNA sequences of genes encoding galactokinase ( CpGAL1) and orotidine-5'-phosphate decarboxylase ( CpURA3) from a genomic DNA library of C. parapsilosis by functional complementation of corresponding mutations in Saccharomyces cerevisiae. The predicted protein products, Gal1p and Ura3p, displayed a high degree of homology with corresponding sequences of C. albicans and S. cerevisiae, respectively. A collection of galactokinase-deficient ( gal1) strains of C. parapsilosis was prepared using direct selection of mutagenized cells on media containing 2-deoxy-galactose. Additionally, we constructed a plasmid vector carrying CpGAL1 as a selection marker and a genomic DNA fragment with an autonomously replicating sequence activity that transforms the C. parapsilosis gal1 mutant strain with high efficiency. This system for genetic transformation of C. parapsilosis may significantly advance the study of this human pathogen, greatly improving our understanding of its biology and virulence, with implications for drug development.
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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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