May play a role in the interactions between neurites derived from specific subsets of neurons during development. Restricted to the nervous system, mainly in brain. In brain, it is highly expressed in the olfactory bulb and retina. In the developing olfactory bulb, it localizes along the dendrites of these cells as well as in their axons to some extent. In retina, it cocentrates in the inner plexiform layer throughout development (at protein level).