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Effects of degraded schizophyllans on regeneration of protoplast cells of Saccharomyces cerevisiae.

Schizophyllan was heated at 100 degrees C in 85% dimethyl sulfoxide (DMSO) containing 0.01 M H2SO4 for various times, and fractionated by gel-permeation chromatography. Molecular weights (M(r)) of the depolymerized products thus obtained were measured in water and DMSO by GPC-LALLS to estimate their conformations in water. The products with triple helical structure stimulated regeneration of Saccharomyces cerevisiae protoplast cells, while those of single chain conformation were totally inactive.