376 Cell SnapShot: Lipid Kinase and Phosphatase 156 Reaction Pathways , January 16,2014©2014 ElsevierInc. DOI http://dx.doi.org/10.1016/j.cell.2014.01.003 Simon A. Rudge and Michael J.O. Wakelam The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK PIK3CA, PIK3CB, PIK3CD, MTM1, MTMR1, MTMR2, PIP4K2A, PIP4K2B, PIK3CG, IPMK, PIK3C2A, MTMR3, MTMR6, MTMR8, PIK3C2B MTMR14, PTEN, TPTE2 PIP4K2C TMEM55A, TMEM55B PTEN, TPTE2 PI(3,5)P2 PI(5)P PI(4,5)P2 PI(3,4,5)P3 TPTE2, FIG4, OCRL, PIKFYVE TPTE2, FIG4, OCRL, FIG4 PIKFYVE PIP5K1A INPP5B, INPP5D, PIP5K1A INPP5B, INPP5D, PIP5K1A PIP5K1A PTPMT1 INPP5E, INPP5F, PIP5K1B PIP5K1B INPP5E PIP5K1B INPP5E, INPP5F, PIP5K1B PIP5K1C INPP5J, INPP5K, PIP5K1C INPP5J, INPP5K, INPPL1 PIP5K1C INPPL1, SYNJ1, SYNJ2 PIK3C3, PIK3C2A, PIK3C2B, PIK3C2G, PIK3CA, PIK3CB, PIK3C2A, PIK3C2B, PIK3CD, PIK3CG PI4K2A, PI4K2B, PIK3C2G, PIK3CA, PI4KA, PI4KB PIK3CB, PIK3CD, PIK3CG PIP4K2A PIP5K1A PIP5K1B PIP5K1C MTM1, MTMR1, MTMR2, SACM1L, SYNJ1 PTEN, TPTE2 PI(3)P MTMR3, MTMR4, MTMR6, PI PI(4)P PI(3,4)P MTMR7, MTMR8, MTMR14, 2 PTEN, TPTE2, SACM1L, SYNJ1 PIP4K2B See online version for legend and references. and legend for version online See INPP4A, INPP4B AGK PPAP2A, PPAP2B, PPAP2C SPHK1, SPHK2 CERK MAG LPA DGKA, DGKB, DGKG, DGKD, DGKE, DGKZ, DGKH, DGKQ, SGPP1, PPAP2A, PPAP2A, PPAP2B, DGKI, DGKK, EIF2AK3, AGK PPAP2B, PPAP2C PPAP2C Sphingosine Sphingosine 1-P Ceramide Ceramide 1-P PPAP2A, PPAP2B, PPAP2C, DAG PPAPDC1A, PPAPDC1B, PA PPAPDC2, LPIN1, LPIN2, LPIN3 SnapShot: Lipid Kinase and Phosphatase Reaction Pathways Simon A. Rudge and Michael J.O. Wakelam The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK This SnapShot presents the reaction pathways catalyzed by the known mammalian enzymes—listed in the SnapShot “Lipid Kinases and Phosphatases” (Cell 155, December 19, 2013)—that either phosphorylate or dephosphorylate lipids. In cases in which only in vitro data have been reported, the gene encoding the enzyme is shown in italics and/or a dashed line is used to represent the reaction catalyzed. The lipid fatty acid moieties depicted in the reaction pathways in this SnapShot have been purposely simplified, and therefore they do not represent the complexity of what occurs naturally, i.e., fatty acids can vary in both length and saturation, in particular, the polyphosphoinositides generally have a polyunsaturated fatty acid moiety at the sn-2 position. ABBREVIATIONS PI, phosphatidylinositol; PI(3)P, phosphatidylinositol 3-phosphate; PI(4)P, phosphatidylinositol 4-phosphate; PI(5)P, phosphatidylinositol 5-phosphate; PI(3,4)P2, phosphatidylinositol 3,4-bisphosphate; PI(3,5)P2, phosphatidylinositol 3,5-bisphosphate; PI(4,5)P2, phosphatidylinositol 4,5-bisphosphate; PI(3,4,5)P3, phosphatidylinositol 3,4,5-trisphosphate; PA, phosphatidic acid; LPA, lysophosphatidic acid; DAG, diacylglycerol; MAG, monoacylglycerol. ACKNOWLEDGMENTS Work in the S.A.R. and M.J.O.W. lab is supported by the Biotechnology and Biological Sciences Research Council. 376.e1 Cell 156, January 16, 2014 ©2014 Elsevier Inc. DOI http://dx.doi.org/10.1016/j.cell.2014.01.003.