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Characterization of recombinantFrancisella tularensisacid phosphatase A

Authors
Journal
Protein Expression and Purification
1046-5928
Publisher
Elsevier
Publication Date
Volume
45
Issue
1
Identifiers
DOI: 10.1016/j.pep.2005.05.001
Keywords
  • Francisella Tularensis
  • Acid Phosphatase A
  • Trap
  • Burst-Inhibiting Acid Phosphatase
  • Phosphomonoesterase
Disciplines
  • Biology
  • Chemistry
  • Medicine

Abstract

Abstract Francisella tularensis is the etiologic agent of the potentially fatal human disease tularemia and is capable of survival and multiplication within professional phagocytes of the host. While the mechanisms that allow intracellular survival of the bacterium are only now beginning to be elucidated at the molecular level, previous work demonstrated that F. tularensis produces copious levels of an acid phosphatase which in crude and purified form affected the dose-dependent abrogation of the respiratory burst of stimulated neutrophils. The work presented here was undertaken to provide a source of recombinant F. tularensis acid phosphatase for detailed biochemical, biological, and structural studies. Results from this work are consistent with the ability to generate milligram amounts of recombinant enzyme whose attributes are demonstrably equivalent to those of the native enzyme. Such properties include molecular mass, broad substrate specificity, sensitivity and resistance to various inhibitors, pH optimum, and reactivity with rabbit polyclonal antibody to the native enzyme.

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