This gene encodes a member of the glutamate receptor interacting protein family. The encoded scaffold protein may play a role as a localized scaffold for the assembly of a multiprotein signaling complex and as mediator of the trafficking of its binding partners at specific subcellular location in neurons. This protein controls the intracellular fate of AMPAR and the endosomal sorting of the GRIA2 subunit toward recycling and membrane targeting through complex formation with NSG1, GRIA2 and STX12 (By similarity).