Abstract
N-Acylphosphatidylethanolamine phospholipase D (NAPE-PLD) is regarded as the principal enzyme that generates N-acylethanolamines (NAEs), a family of signaling lipids that includes the endocannabinoid anandamide. To investigate the biological function and biosynthesis of NAEs, we sought to develop potent NAPE-PLD inhibitors. To this aim, we utilized a high-throughput screening-compatible NAPE-PLD activity assay, which uses the fluorescence-quenched substrate PED6. This assay conveniently uses membrane fractions of NAPE-PLD overexpressing HEK293T cell lysates, thus avoiding the need for protein purification. Here, we give a detailed description of the NAPE-PLD PED6 fluorescence activity assay, which has increased throughput compared to previous radioactivity- or mass-spectrometry-based assays.
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