Predicted to enable identical protein binding activity. Predicted to be involved in neurotransmitter receptor transport, endosome to postsynaptic membrane; regulation of intracellular transport; and regulation of modification of synaptic structure. Predicted to act upstream of or within protein transport. Predicted to be located in cytosol and nucleoplasm. Predicted to be active in glutamatergic synapse and postsynaptic recycling endosome. Predicted to be extrinsic component of postsynaptic early endosome membrane. Is expressed in heart; lung; nervous system; and sensory organ. Orthologous to human GRIPAP1 (GRIP1 associated protein 1). [provided by Alliance of Genome Resources, Apr 2022]