SAP 102 (DLG 3)

A component of postsynaptic densities

General Information

SAP 102 (synapse associated protein of 102 kDa, also called DLG 3) belongs to the PSD 95 family containing a modular structure with three PDZ-, one SH3- and a guanylate kinase-like domain. It is a component of postsynaptic densities in central synapses. It is involved in NMDA receptor clustering and immobilization. In vitro, all three PDZ domains in SAP 102 bind the cytoplasmic tail of NR2B.