Two Cell Wall β-d-Glucans fromNeurospora crassa

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Abstract
Two β-d-glucan components have been obtained from mycelia of Neurospora crassa by fractionation with alkali. The component obtained by extraction with 4% NaOH had a unit structure of a linear β1,3-d-glucan consisting of about 86 glucosyl residues, two of which were substituted with single β-d-glucosyl residues at C6. The unit chain is linked in turn through two β-1,6-glucosidic linkages. The alkali insoluble component had a structure essentially similar to that of the alkali soluble component. But, the main chain of the unit structure of the latter was much shorter (ca. 20) and had both glucosyl and laminaribiosyl side chains.

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