Abstract
Two polysaccharide fractions S-glucan and R-glucan were isolated from the cell walls of S. commune. S-Glucan is primarily a linear 1,3-.alpha.-glucan with occasional 1,6-.alpha. linkages as shown by permethylation and partial acid hydrolysis. The glucan fraction also contains a small amount of xylose. The R-glucan fraction is a mixture of 2 polysaccharides, chitin and a highly branched glucan with linear 1,6-.beta. and 1,3-.beta. segments and 1,6-.beta. branching. This conclusion is based on permethylation studies and enzymic hydrolyses.

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