1,2-Dipalmitoyl-L-alpha-phosphatidyl-D-myo-inositol 4,5-bisphosphate (CAS 120595-88-2)

1,2-Dipalmitoyl-L-alpha-phosphatidyl-D-myo-inositol 4,5-bisphosphate is a synthetic analog of a naturally occurring phosphoinositide, which plays a pivotal role in cellular signaling pathways. This particular phospholipid is a specialized molecule consisting of a glycerol backbone esterified with two palmitic acid molecules and a complex inositol phosphate headgroup phosphorylated at positions 4 and 5. Scientific research into this chemical has focused on its role as a critical secondary messenger in various cellular processes. It is integral to the phosphoinositide 3-kinase (PI3K) pathway, where it acts as a substrate for phospholipase C (PLC). Upon activation by extracellular signals, PLC hydrolyzes phosphatidylinositol 4,5-bisphosphate to generate diacylglycerol (DAG) and inositol 1,4,5-trisphosphate (IP3), both of which serve as key secondary messengers in cellular signaling cascades. DAG remains in the membrane, activating protein kinase C (PKC), while IP3 mobilizes calcium from intracellular stores, influencing various cellular functions. Moreover, this chemical is widely used in studies exploring the dynamics of lipid rafts and their role in organizing signaling complexes at the cellular membrane. It has also been utilized in synthetic biology to engineer membranes with specific properties, aiding in the study of lipid-lipid and lipid-protein interactions, which are crucial for understanding membrane dynamics and signaling pathways in cells.