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microbiology, Vol 143, 1673-1680, Copyright © 1997 by Society for General Microbiology
ARTICLES |
RC Montijn, P Van Wolven, S De Hoog and FM Klis
Institute of Molecular Cell Biology, University of Amsterdam, The Netherlands. montijn@bio.uva.nl
Wild-type cells of the pathogenic black yeast Exophiala (Wangiella) dermatitidis grown in a low-pH ascorbate medium became less melanized and less resistant to Zymolyase. This was accompanied by increased staining with fluorescently labelled concanavalin A. The sugar composition of wild-type and mutant cell walls was, except for the presence of galactose, similar to that of Saccharomyces cerevisiae. Digestion of mutant cell walls with laminarinase released galactomannoproteins. In addition, the released cell wall proteins contained glucose and reacted with affinity-purified 1,6-beta-glucan antiserum, indicating that they are linked to 1,6-beta-glucan. It is proposed that 1,6-beta-glucosylated cell wall proteins generally occur among ascomycetes.
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