dppi

DPPI 1c hydrochloride is an inhibitor of dipeptidyl peptidase IV (IC50 = 104 nM) that shows selectivity over enzymes with DPP-like activity (IC50 > 30 μM).

PtdIns-(3)-P1 (1,2-dipalmitoyl) (Compound 7) ammonium is a derivative of phosphatidylinositol 3-phosphate. This compound interacts with the FYVE domain of human EEA1, functioning as a second messenger in cellular signal transduction and membrane transport. Additionally, phosphatidylinositol 3-phosphate can stimulate ROS formation by regulating the neutrophil oxidase complex.

Phosphatidylinositol-(4,5)-P2(1,2-dipalmitoyl), a synthetic analog of natural phosphatidylinositol (PtdIns) with C16:0 fatty acids at the sn-1 and sn-2 positions, maintains the inositol and diacylglycerol (DAG) stereochemistry of its natural counterpart. Although phosphatidylinositol phosphates constitute a minor fraction of total membrane phospholipids, they are pivotal in initiating and propagating cellular signals. This compound mirrors the activity of the natural phosphatidylinositol produced by PtdIns-4-phosphate 5-kinase's action on PtdIns-(4)-P1. Its hydrolysis by phosphoinositide (PI)-specific phospholipase C yields inositol triphosphate (IP3) and DAG, crucial secondary messengers in a complex signal transduction pathway.

DPPI-4-P ammonium is a phosphatidylinositol that can be used to detect the surface potential of lipid membranes.

DPPI-5-P (ammonium) (PtdIns-(5)-P1) can be phosphorylated to form diphosphate esters, such as PtdIns-(4,5)-P2. Additionally, DPPI-5-P (ammonium) can be cleaved by phosphatidylinositol (PI)-specific phospholipase C (PLC) to produce inositol triphosphate esters.

DPPI-4,5-P2 ammonium serves as a substrate for phosphatidylinositol-specific phospholipase C-δ1 (PI-PLC-δ1).