Abstract
Optimum pH and temperature of the endoglucanase from Rhodococcus sp. was 5.0 and 40 °C. The endoglcuanase activity was 1.18 folds higher in 5% butanol solution than that in butanol-free solution. Melt point temperature was 2.5 °C higher in 5% butanol solution (50.0 °C) than that in butanol-free solution (47.5 °C). At 45–60 °C, Gbbs-free energy change, ∆G, was higher in 5% butanol solution than that in butanol-free solution. The content of α-helix and β-sheet increased in 5% butanol solution. The increasing of α-helix and β-sheet content led to higher activity and better thermostability in butanol solution. The cold active butanol-tolerant endoglucanase was valuable for biobutanol production by a simultaneous saccharification and fermentation process.
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19 July 2018
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This work was supported by national natural science foundation of China (31271928) and Hubei Provincial Department of Education (Project: Design of a butanol-tolerant endoglucanase and butanol-tolerant mechanism, 2017B041).
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Zeng, X., Xue, D. Increasing of activity and thermostability of cold active butanol-tolerant endoglucanase from a marine Rhodococcus sp. under high concentrations of butanol condition. 3 Biotech 8, 265 (2018). https://doi.org/10.1007/s13205-018-1249-4
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DOI: https://doi.org/10.1007/s13205-018-1249-4