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Effect of temperature on plasmid stability and expression of cloned cellulase gene in a recombinantBacillus megaterium

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Summary

The expression of carboxymethyl cellulase gene inBacillus megaterium (pCK108) was investigated with respect to temperature in batch culture. The suboptimal temperature supporting maximal cell growth rate was determined to be 30 °C at which stability of the plasmid pCK108 could be maintained stable. However, cellular plasmid contents, production rate of cellulase of the cell, and efficiency of the gene expression increased significantly with increase of the temperature from 30 °C to 44 °C, even though the plasmid stability decreased up to 60% level at the end of the culture.

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Authors and Affiliations

  1. Department of Biological Science and Engineering, Korea Advanced Institute of Science and Technology, Chongryang, POB 150, 131, Seoul, Korea

    Kwang H. Son, Jong H. Jang & Jung H. Kim

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  1. Kwang H. Son
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  2. Jong H. Jang
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  3. Jung H. Kim
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Son, K.H., Jang, J.H. & Kim, J.H. Effect of temperature on plasmid stability and expression of cloned cellulase gene in a recombinantBacillus megaterium . Biotechnol Lett 9, 821–824 (1987). https://doi.org/10.1007/BF01026189

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  • DOI: https://doi.org/10.1007/BF01026189

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