Studies on the Glucanase ofSclerotinia libertiana

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Abstract
The digestion of yeast cells with the glucanase of Sclerotinia was found to be significantly increased by pretreating the cells with papaya lysozyme, as well as by pretreating with dilute sodium hydroxide solution. Defatted Chlorella cells were digested to a certain extent with the glucanase alone. Pretreatment with lipolytic enzyme slightly stimulated the digestion of yeast cells by glucanase, but this effect was not found with the yeast cells treated by soaps or the defatted Chlorella cells. Egg-white lysozyme had no effect on digestion of yeast cells. The effect of papaya lysozyme seemed to have relation with the liberation of hexosamine compounds from the yeast-cell walls. It is suggested that, in normal cells, the glucan is present to form a further complex structure with certain other component, becoming unsusceptible to the action of glucanase.

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