Characterization ofPaenibacillus curdlanolyticusIntracellular Xylanase Xyn10B Encoded by thexyn10BGene

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Abstract
The Paenibacillus curdlanolyticus xyn10B gene encoding a family-10 xylanase was cloned and expressed in Escherichia coli, and the recombinant enzyme rXyn10B was characterized. Immunological analysis suggested that Xyn10B is an intracellular enzyme. rXyn10B hydrolyzed birch-wood xylan and xylooligosaccharides to produce mainly xylobiose, suggesting that it is an endoxylanase. Its properties were significantly different from those of some homologous enzymes.