Fluorimetric assay of phospholipase A acting on biomembrane phospholipids.


A sensitive phospholipase A assay suitable for organelle activities is described. Activation of the enzyme produces an increase in membrane lysophospholipids. The amino groups of extracted lipids were derivatized with 4-fluoro-7-nitrobenzo-2-oxa-1,3-diazole and the amounts of phosphatidylethanolamine and its lysoform were quantitated using HPLC equipped… (More)


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