Expression of alpha-1,3 linkage-containing oligomannosyl residues in a cell-wall mannan of Candida tropicalis grown in yeast extract-Sabouraud liquid medium under acidic conditions
- PMID: 8143843
- DOI: 10.1016/0014-5793(94)80576-8
Expression of alpha-1,3 linkage-containing oligomannosyl residues in a cell-wall mannan of Candida tropicalis grown in yeast extract-Sabouraud liquid medium under acidic conditions
Abstract
We investigated the cell-wall mannan obtained from Candida tropicalis IFO 1647 strain cells grown in yeast extract-Sabouraud medium at pH 3.0 by two-dimensional homonuclear Hartmann-Hahn spectroscopy. The results indicate that the phosphate group and the side chains containing a beta-1,2-linked mannopyranose unit decreased compared to those of mannan from cells grown under conventional conditions (pH 5.9) with concomitant expression of alpha-1,3 linkage-containing oligomannosyl side chains. The results of acetolysis of these mannans indicated that the presence of alpha-1,3-linked mannopyranose unit existed in side chains corresponding to pentaose and hexaose, Manp alpha 1-3 Manp alpha 1-2Manp alpha 1-2 Manp alpha 1-2Man, and Manp alpha 1-2Manp alpha 1-3Manp alpha 1-2Manp alpha 1-2Manp alpha 1-2Man, in the mannan from cells grown at pH 3.0.
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