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A novel gene (ANK58566) encoding a cold-active α-amylase was cloned from marine bacterium Bacillus sp. dsh19-1 (CCTCC AB 2015426), and the protein was expressed in Escherichia coli. The gene had a length of 1302 bp and encoded an α-amylase of 433 amino acids with an estimated molecular mass of 50.1 kDa. The recombinant α-amylase (AmyD-1) showed maximum activity at 20 °C and pH 6.0, and retained about...
We have previously reported a non-processive endo-type chitinase, ChiA, from a newly isolated marine psychrophilic bacterium, Pseudoalteromonas sp. DL-6. In this study, a processive exo-type chitinase, ChiC, was cloned from the same bacterium and characterized in detail. ChiC could hydrolyze crystalline chitin into (GlcNAc)2 as the only observed product. It exhibited high catalytic activity even at...
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