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A gene coding for endo-β-1,3-1,4-glucanase (lichenase) containing a recombinant plasmid, pLL200K, was transferred from Bacillus circulans into a new shuttle plasmid, pLLS920, by ligating linearized DNAs of pLL200K and pUB110. B. subtilis RM125 and B. megaterium ATCC14945 transformed with pLLS920 produced the endo-β-1,3-1,4-glucanase. The enzyme was produced during active growth with maximum activity...
A gene coding for the endo-β-1,3-1,4-glucanase of B. circulans ATCC21367 was cloned into Escherichia coli. The cloned enzyme hydrolyzed lichenan or barley β-glucan to produce 3-O-β-cellobiosyl-d-glucose as a main product but was inactive with carboxymethyl cellulose, laminarin and xylan. The enzyme, Mr=28 kDa, remained within the cytoplasm of E. coli. A 771 bp open reading frame was in the 2 kb Pst...
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