Predicted to enable signaling receptor binding activity. Acts upstream of or within glial cell development and retina development in camera-type eye. Predicted to be located in membrane. Predicted to be active in neuron projection; plasma membrane; and synapse. Is expressed in cleithrum; immature eye; and nervous system. Human ortholog(s) of this gene implicated in breast carcinoma and prostate cancer. Orthologous to human CADM1 (cell adhesion molecule 1).