Exocellular polysaccharide from Tremella

The acidic, exocellular polysaccharide from Tremella mesenterica, isolated by Cetavlon precipitation, has repeating structure 39 with D-... 

Figure 1. Schematic average repeat unit of exocellular polysaccharide from Tremella mesenterica NRRL Y-6158 GU, o-glucuronic acid M, o-mannose Xy,...

Table I further illustrates that the exocellular acidic polysaccharides from Tremella are generally more highly xylo-sylated than those from Cryptococcus and display more negative optical rotations ( 5). Positive increases in specific rotations of partially dexylosylated T. mesenterica GXM (, ) suggest that D-xylosyl residues occur as 3-linked outer chains.

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