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Temperature regulation of lipase secretion by Pseudomonas fluorescens strain MFO

Abstract : The psychrotrophic bacterium Pseudomonas fluorescens is a milk contaminant known to secrete a lipase that is a nuisance for the dairy industry but may have a biotechnological interest. Strain MFO secretes this enzyme upon induction under various conditions. Regardless of the inducer and growth temperature, a single enzyme is produced. However, optimal production occurs when the culture is grown at 17.5° C. Other exported proteins (an extracellular protease and two periplasmic phosphatases) have previously been shown to display exactly the same optimal temperature of production. In contrast, constitutive cell-bound esterase and cytochrome oxidase are produced at a roughly constant rate regardless of the growth temperature. The relevance of these results are discussed in terms of multifunctional regulation and interest for the dairy industry.
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https://hal-normandie-univ.archives-ouvertes.fr/hal-02372690
Contributor : Annabelle Merieau <>
Submitted on : Wednesday, November 20, 2019 - 3:21:45 PM
Last modification on : Tuesday, April 7, 2020 - 3:18:30 PM

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A. Mérieau, B. Gugi, J. Guespin-Michel, N. Orange. Temperature regulation of lipase secretion by Pseudomonas fluorescens strain MFO. Applied Microbiology and Biotechnology, Springer Verlag, 1993, 39 (1), pp.104-109. ⟨10.1007/BF00166857⟩. ⟨hal-02372690⟩

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