CaGpi14 is the catalytic subunit of the first mannosyltransferase that is involved in the glycosylphosphatidylinositol (GPI) biosynthetic pathway in Candida albicans. We show that CaGPI14 is able to rescue a conditionally lethal gpi14 mutant of Saccharomyces cerevisiae, unlike its mammalian homologue. The depletion of this enzyme in C. albicans leads to severe growth defects, besides causing deficiencies in GPI anchor levels. In addition, CaGpi14 depletion results in cell wall defects and upregulation of the cell wall integrity response pathway. This in turn appears to trigger the osmotic-stress dependent activation of the HOG1 pathway and an upregulation of HOG1 as well as its downstream target, SKO1, a known suppressor of expression of hyphae-specific genes. Consistent with this, mutants of CaGPI14 are unable to undergo hyphal transformations in different hyphae-inducing media, under conditions that produce abundant hyphae in the wild-type cells. Hyphal defects in the CaGPI14 mutants could not be attributed either to reduced protein kinase C activation or to defective Ras signalling in these cells but appeared to be driven by perturbations in the HOG1 pathway. Copyright © 2016 John Wiley & Sons, Ltd.
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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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| 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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