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- W2988895981 abstract "Marine species have gained significant attention as potential source for a broad spectrum of bioactive proteins. Fish phospholipases A2 (PLA2) have attracted renewed interest due to their excellent properties in lipid digestion. Herein, we report for the first time the catalytic properties of two intestinal secreted PLA2 (sPLA2) identified from Diplodus sargus (IDsPLA2) and Sparus aurata (ISaPLA2). The highest sequence identity was obtained with recently isolated Sparidae digestive PLA2 (45%) and Human pancreatic PLA2 (42%). IDsPLA2 and ISaPLA2 were overexpressed in E. coli as inclusion bodies, refolded and purified. Both enzymes have improved thermostability compared to mammalian pancreatic sPLA2 since they are active and stable at 55 °C, with specific activities of 320 and 190 U mg−1 measured on phosphatidylcholine, respectively. Interestingly, IDsPLA2, but not ISaPLA2, revealed weak toxicity towards macrophages and suggests its involvement in cell membrane degradation. ISaPLA2 was found to be more active than IDsPLA2 when using the monolayer technique at 20 mN m−1. Structural models of both enzymes revealed their differences. In silico docking of phospholipids with both models allowed proposing key amino-acids in substrate binding and selectivity. Overall, these results provide insight into the enzymatic and structural properties of two novel sPLA2 with potential for future applications." @default.
- W2988895981 created "2019-11-22" @default.
- W2988895981 creator A5004320396 @default.
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- W2988895981 date "2020-01-01" @default.
- W2988895981 modified "2023-09-25" @default.
- W2988895981 title "Intestinal phospholipase A2 from Sparidae species: Functional properties and cytotoxic potential evaluation" @default.
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- W2988895981 doi "https://doi.org/10.1016/j.ijbiomac.2019.09.149" @default.
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