Caractérisation d'une protéine de 47 KDA chez le pathogène humain candida albicans

Authors: Martineau, Philippe
Advisor: Giasson, Luc
Abstract: Candida albicans is a human fungal pathogen which can switch from yeast-like growth to filamentous growth depending upon its environment. The ability to grow in the filamentous form has been shown to be important for virulence in animal models. Using the differential display technique, we have identified a number of genes preferentially expressed in filamentous cells. One of them was cloned and sequence analysis revealed 70% homology with Pho89 from Saccharomyces cerevisiae, a gene encoding a phosphate transporter. To verify the function of CaPHO89, the open reading frame was cloned into an expression vector and transformed into a S. cerevisiae pho89 null mutant strain. Phosphate transport in the transformants was evaluated using [32P]-orthophosphate. The results obtained showed that CaPHO89 could restore the wild-type phenotype in S. cerevisiae, suggesting that CaPHO89 encodes a functional phosphate transporter.
Document Type: Mémoire de maîtrise
Issue Date: 2004
Open Access Date: 11 April 2018
Permalink: http://hdl.handle.net/20.500.11794/18062
Grantor: Université Laval
Collection:Thèses et mémoires

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