Shows a reticular pattern in the cytoplasm. Shows a reticular pattern in the cytoplasm. Expressed in testis. Expressed during testis maturation process and in maturing spermatids. In brain, it is expressed in neurons of the hippocampus, cerebral cortex, and thalamus, Purkinje cells, and also in the choroid plexus and ependymal cells. Expressed predominantly in dendrites and cell bodies of the neurons, but not in axons. The level of expression increases during the period of maturation of the mouse brain after birth. Lacks the transmembrane domain. Lacks the transmembrane domain.