It may be a cellular address molecule specific to Purkinje cells. It may represent a receptor or a subunit of a receptor complex. Interacts with NEGR1. Found on the dendrites, somata and axons of developing Purkinje cells. Undetectable on other neurons like Golgi or granule cells. Expressed by developing cerebellar Purkinje cells. Expression coincides with the growth of the dendritic tree, after Purkinje cells have finished their migration from the ventricular zone (from E15 until E21). Expressed in the adult. Belongs to the immunoglobulin superfamily. IgLON family.