Hemicellulose debranching enzymes

Hemicelluloses present in a wood fibre are exposed to the cellulolytic complex of enzymes by the action of different xylanases, which catalyse the hydrolysis of the xylose backbone of heteroxylan chains layered on the heteroxylan microfibrills. The xylanases act at random locations on the heteroxylan chains that have themselves become exposed by the action of the action of the various debranching enzymes, as presented in Fig. 4.12. 

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