Predicted to enable protein homodimerization activity. Predicted to be involved in heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules and homophilic cell adhesion via plasma membrane adhesion molecules. Predicted to act upstream of or within protein localization. Predicted to be located in cell-cell junction. Predicted to be active in parallel fiber to Purkinje cell synapse. Predicted to be integral component of presynaptic membrane. Human ortholog(s) of this gene implicated in Charcot-Marie-Tooth disease. Orthologous to human CADM3 (cell adhesion molecule 3). [provided by Alliance of Genome Resources, Apr 2022]