Predicted to enable ionotropic glutamate receptor binding activity and synaptic receptor adaptor activity. Predicted to be located in synapse. Predicted to be active in dendritic spine and postsynaptic density. Predicted to colocalize with postsynaptic membrane. Is expressed in cardiovascular system; urinary system; and visual system. Human ortholog(s) of this gene implicated in Phelan-McDermid syndrome and schizophrenia 15. Orthologous to human SHANK3 (SH3 and multiple ankyrin repeat domains 3).