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  • Title: Cloning of an endoglycanase gene from Paenibacillus cookii and characterization of the recombinant enzyme.
    Author: Shinoda S, Kanamasa S, Arai M.
    Journal: Biotechnol Lett; 2012 Feb; 34(2):281-6. PubMed ID: 21972145.
    Abstract:
    An endoglycanase gene of Paenibacillus cookii SS-24 was cloned and sequenced. This Pgl8A gene had an open reading frame of 1,230 bp that encoded a putative signal sequence (31 amino acids) and mature enzyme (378 amino acids: 41,835 Da). The enzyme was most homologous to a β-1,3-1,4-glucanase of Bacillus circulans WL-12 with 84% identity. The recombinant enzyme hydrolyzed carboxymethyl cellulose, swollen celluloses, chitosan and lichenan but not Avicel, chitin powder or xylan. With chitosan as the substrate, the optimum temperature and hydrolysis products of the recombinant enzyme varied at pH 4.0 and 8.0. This is the first report that characterizes chitosanase activity under different pH conditions.
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