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Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence
Journal article   Open access   Peer reviewed

Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence

Paula McCourt, Hsing-Yin Liu, Josie E Parker, Christina Gallo-Ebert, Melissa Donigan, Adam Bata, Caroline Giordano, Steven L Kelly and Joseph T Nickels, Jr
G3 : genes - genomes - genetics, v 6(11), pp 3455-3465
01 Nov 2016
PMID: 27587298
url
https://doi.org/10.1534/g3.116.033969View
Published, Version of Record (VoR) Open

Abstract

hyphae sterol virulence lipid Candida
is an opportunistic fungus responsible for the majority of systemic fungal infections. Multiple factors contribute to pathogenicity. strains lacking CaArv1 are avirulent. Arv1 has a conserved Arv1 homology domain (AHD) that has a zinc-binding domain containing two cysteine clusters. Here, we explored the role of the CaAHD and zinc-binding motif in CaArv1-dependent virulence. Overall, we found that the CaAHD was necessary but not sufficient for cells to be virulent, whereas the zinc-binding domain was essential, as cells expressing the full-length zinc-binding domain mutants, Caarv1 and Caarv1 , were avirulent. Phenotypically, we found a direct correlation between the avirulence of , , , and cells and defects in bud site selection, septa formation and localization, and hyphal formation and elongation. Importantly, all avirulent mutant strains lacked the ability to maintain proper sterol distribution. Overall, our results have established the importance of the AHD and zinc-binding domain in fungal invasion, and have correlated an avirulent phenotype with the inability to maintain proper sterol distribution.

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Collaboration types
International collaboration
Web of Science research areas
Genetics & Heredity
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