characterization of serum phospholipase a2 activity in three diverse species of west african crocodiles

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ID: 144116
2011
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Abstract
Secretory phospholipase A2, an enzyme that exhibits substantial immunological activity, was measured in the serum of three species of diverse West African crocodiles. Incubation of different volumes of crocodile serum with bacteria labeled with a fluorescent fatty acid in the sn-2 position of membrane lipids resulted in a volume-dependent liberation of fluorescent probe. Serum from the Nile crocodile (Crocodylus niloticus) exhibited slightly higher activity than that of the slender-snouted crocodile (Mecistops cataphractus) and the African dwarf crocodile (Osteolaemus tetraspis). Product formation was inhibited by BPB, a specific PLA2 inhibitor, confirming that the activity was a direct result of the presence of serum PLA2. Kinetic analysis showed that C. niloticus serum produced product more rapidly than M. cataphractus or O. tetraspis. Serum from all three species exhibited temperature-dependent PLA2 activities but with slightly different thermal profiles. All three crocodilian species showed high levels of activity against eight different species of bacteria.
Reference Key
merchant2011biochemistrycharacterization Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Mark Merchant;Kate Juneau;Jared Gemillion;Rodolfo Falconi;Aaron Doucet;Matthew H. Shirley
Journal la camera blu
Year 2011
DOI
10.1155/2011/925012
URL
http://dx.doi.org/10.1155/2011/925012
Keywords
biochemistry

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