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FEMS Microbiol Lett. 2001 Nov 13;204(2):323-8.

Ura-status-dependent adhesion of Candida albicans mutants.

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Department of Molecular and Cell Biology, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen, UK.


Gene disruptions in the diploid opportunistic human fungal pathogen Candida albicans are usually created using multiple rounds of targeted integration called the 'ura-blaster' method. Resulting heterozygous and homozygous null mutants can be auxotrophic (Ura(-)) or prototrophic (Ura(+)) for uracil biosynthesis. Here we demonstrate that the Ura-status of otherwise isogenic mutants affected the adhesion of C. albicans. Moreover the effect of Ura-status on adhesion was also dependent on the null mutant background, the nature of the underlying surface and the carbon source for growth. Therefore the Ura-status is not neutral in determining adhesive properties of C. albicans mutants that are generated via the ura-blaster protocol.

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