Predicted to enable X11-like protein binding activity; amyloid-beta binding activity; and kinesin binding activity. Predicted to be involved in several processes, including neurotransmitter receptor transport to postsynaptic membrane; positive regulation of synaptic transmission; and regulation of synapse organization. Predicted to act upstream of or within regulation of cell growth. Is active in GABA-ergic synapse and glutamatergic synapse. Is integral component of postsynaptic density membrane and integral component of spine apparatus membrane. Orthologous to human CLSTN1 (calsyntenin 1). [provided by Alliance of Genome Resources, Apr 2022]