Phosphoinositides derive from the phospholipid, phosphatidylinositol (PtdIns), by phosphorylation of the inositol ring in the lipid head group. The determination of phosphoinositide species is a particular challenge, because the structurally similar inositolphosphate-head groups must be analyzed as well as the lipid-associated fatty acids. The method presented in this chapter consists of two steps: First phosphoinositides are separated by thin-layer chromatography (TLC) according to their characteristic head groups and the individual lipids are isolated. Second, the fatty acids associated with each isolated lipid are analyzed using a gas-chromatograph (GC). The combination of these two classical methods for lipid analysis, TLC and GC, provides a cost-efficient and reliable alternative to lipidomics approaches requiring more extensive instrumentation. © 2013 Springer Science+Business Media, LLC.
CITATION STYLE
Heilmann, M., & Heilmann, I. (2013). Mass measurement of polyphosphoinositides by thin-layer and gas chromatography. Methods in Molecular Biology, 1009, 25–32. https://doi.org/10.1007/978-1-62703-401-2_3
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