Phospholipid phosphatase-related protein type 2 (PLPPR2)

Phospholipid phosphatase-related protein type 2 (PLPPR2) is a member of the plasma membrane phospholipid phosphatase-related proteins (PLPPRs, also called plasticity-related genes or PRGs), highly expressed in neurons and involved in processes such as neuronal differentiation, growth, plasticity, and filopodia formation. Unlike classical phospholipid phosphatases, PLPPR2 lacks catalytic activity but modulates extracellular lysophosphatidic acid (LPA) signaling. This protein participates in axon guidance, dendritic morphogenesis, and synaptic organization, and its loss in animal models is associated with increased susceptibility to seizures and abnormal behavior. PLPPR2 is currently not a validated therapeutic target and has no known drug ligands, although its close association with neuronal morphology and plasticity highlights potential roles in neurodevelopmental and neuropsychiatric disorders. "PLPPR2" is sometimes confused with PRG4/lubricin, but in this context it refers to "plasticity-related gene 4" in the PLPPR family, not the PRG4 gene for lubricin. The names PRG4 and PRG-4 are used in the literature for both proteins, but the synonyms most relevant here are "phospholipid phosphatase-related protein type 2" and "plasticity-related gene 4 protein." No evidence supports that PLPPR2 is a direct therapeutic target for drugs; it is characterized as a modulator of neuronal signaling rather than a receptor or enzyme with direct pharmacological ligands.

Other names

PRG4PRG-4LPPR2plasticity-related gene 4plasticity-related gene 4 proteininactive phospholipid phosphatase PLPPR2lipid phosphate phosphatase-related protein type 2

Not applicable (not a known drug target; lacks catalytic activity, function is modulatory in LPA signaling)