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Microcalorimetric investigation of the growth of the engineering BACILLUS THURINGIENSIS with different plasmid numbers and various promoters

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Abstract

A microcalorimetric technique based on the bacterial heat output was applied to evaluate the influence of plasmid copy number and various promoters on the green fluorescent protein expression in Bacillus thuringiensis. The thermogenic curves of the aerobic metabolism of B. thuringiensis strains were determined by using an LKB-2277 bioactivity monitor at 28°C. The analysis of the thermogenic curves indicated for the first time that the more plasmid copy number per cell the more protein synthetization. Promoter BtI-BtII had a stronger impact on the gene expression than promoter 3A investigated by the method of microcalorimetry.

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Correspondence to Y. Ziniu.

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Xiaoyan, L., Yi, L., Ming, S. et al. Microcalorimetric investigation of the growth of the engineering BACILLUS THURINGIENSIS with different plasmid numbers and various promoters. J Therm Anal Calorim 79, 29–32 (2005). https://doi.org/10.1007/s10973-004-0557-6

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  • DOI: https://doi.org/10.1007/s10973-004-0557-6

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