Phosphatidylinositol
Phosphatidylinositol
Phosphatidylinositol (pronounced fos-fa-ti-dy-li-no-si-tol) is a class of lipids, specifically a phospholipid, which is an integral part of cell membranes and plays a key role in cell function.
Etymology
The term "Phosphatidylinositol" is derived from its chemical structure. It consists of a glycerol backbone to which two fatty acid chains and a phosphate group are attached. The phosphate group is further linked to an inositol ring, hence the name.
Function
Phosphatidylinositol plays a crucial role in various cellular processes. It is a precursor of second messengers that are pivotal in transmitting signals from proteins on the cell surface to the cellular interior. It also plays a role in protein sorting and membrane trafficking.
Related Terms
- Phosphatidylinositol 3-kinase: An enzyme that phosphorylates phosphatidylinositol.
- Phosphatidylinositol 4,5-bisphosphate: A type of phosphatidylinositol that plays a role in intracellular signaling.
- Phosphatidylinositol (3,4,5)-trisphosphate: A type of phosphatidylinositol that acts as a second messenger.
See Also
External links
- Medical encyclopedia article on Phosphatidylinositol
- Wikipedia's article - Phosphatidylinositol
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