Predicted to enable G protein-coupled glutamate receptor binding activity. Acts upstream of or within intracellular calcium ion homeostasis and muscle structure development. Predicted to be located in synapse. Predicted to be active in several cellular components, including dendrite; plasma membrane; and postsynaptic density. Is expressed in several structures, including basal plate midbrain region; cardiovascular system; central nervous system; musculature system; and retina. Orthologous to human HOMER1 (homer scaffold protein 1).