Figure 1.

Example GIPC Structure, Including the Nomenclature Used in This Work.

The most abundant GIPC in Arabidopsis callus, t18:1/h24:1, is shown, with the various sugar headgroup structures described in this article. It should be noted that although the final hexose is shown here as α-1,4-glucose, its identity is as yet unknown. The LCB nomenclature of t18:1 indicates that it is a trihydoxyl LCB (i.e., it has three hydroxyl groups), a single double bond, and 18 carbon atoms. An LCB with only two hydroxyl groups (dihydroxy LCB) would be referred to as d18:1.