May play a role in spermatogenesis (By similarity). May be involved in synaptic processes. Interacts with MYCBP. Colocalizes with MYCBP in the cytoplasm. Expressed in brain, retina, testis, heart and lung. Not detected in liver, kidney or intestine. In brain, highly abundant in CNS neurons of the hippocampus and cerebellum. Strongly expressed in cochlea and vestibular sensory epithelia. In both the organ of Corti and the vestibular organ, expression is restricted to hair cells. After birth, expression in the organ of Corti increases about 10-fold by postnatal day 5 (P5) and remains at constant levels thereafter.