Abstract
Consistent with its precloning characterization from the cellulolytic Bacillus sp., β-1,4-endoglucanase purified from the recombinant E. coli exhibited maximum activity at 60°C and pH 7.0. It was highly specific for CMC hydrolysis, with stability up to 70°C and over a pH range of 6.0–8.0. The K m and V max values for CMCase activity of the enzyme were 4.1 mg/ml and 25 μmole/ml min−1, respectively. The purified enzyme was a monomer of 65 kDa, as determined by SDS-PAGE. The presence of sucrose and IPTG in fermentation media increased the endoglucanase activity of the recombinant enzyme to 5.2-folds as compared with that of the actual one.
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Afzal, S., Saleem, M., Yasmin, R. et al. Pre and post cloning characterization of a β-1,4-endoglucanase from Bacillus sp.. Mol Biol Rep 37, 1717–1723 (2010). https://doi.org/10.1007/s11033-009-9592-5
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DOI: https://doi.org/10.1007/s11033-009-9592-5