Abstract
More than 30 years ago, a calcium-dependent enzyme activity was described that generates N-acyl phosphatidylethanolamines (NAPEs), which are precursors for N-acyl ethanolamine (NAE) lipid transmitters, including the endocannabinoid anandamide. The identity of this calcium-dependent N-acyltransferase (Ca-NAT) has remained mysterious. Here, we use activity-based protein profiling to identify the poorly characterized serine hydrolase PLA2G4E as a mouse brain Ca-NAT and show that this enzyme generates NAPEs and NAEs in mammalian cells.
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Acknowledgements
We are grateful to H.Y. Lee for assistance with enzyme assays and G. Simon for numerous helpful discussions and critical reading of the manuscript. This work was supported by the US National Institutes of Health (DA033760), a Hewitt Foundation for Medical Research Fellowship (to W.H.P.) and the ninth Irving S. Sigal Postdoctoral Fellowship from the American Chemical Society (to S.S.K.).
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Y.O. and B.F.C. conceived the project. Y.O., W.H.P., S.S.K. and B.F.C. designed experiments. Y.O. characterized Ca-NAT activity in brain and performed the correlation profiling. Y.O., W.H.P. and S.S.K. characterized the activity of heterologously expressed PLA2G4E and performed the feeding studies. Y.O. and B.F.C. wrote the paper. W.H.P. edited the paper.
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Supplementary information
Supplementary Text and Figures
Supplementary Results and Supplementary Figures 1–13. (PDF 7767 kb)
Supplementary Table 1
Complete ABPP-MudPIT data set. (XLSX 99 kb)
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Ogura, Y., Parsons, W., Kamat, S. et al. A calcium-dependent acyltransferase that produces N-acyl phosphatidylethanolamines. Nat Chem Biol 12, 669–671 (2016). https://doi.org/10.1038/nchembio.2127
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DOI: https://doi.org/10.1038/nchembio.2127
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