Stimulates outgrowth of olfactory axons and migration of hypophysiotropic gonadotropin-releasing hormone 3 (GnRH3) neurons. May couple NMDA-sensitive glutamate receptor signaling to the nucleus and trigger long-lasting changes in the cytoarchitecture of dendrites and spine synapse processes. Expressed in the olfactory bulb, telencephalon, hypothalamus, midbrain tegmentum, retina, hindbrain and the spinal cord. Expressed in GnRH3 neurons within the olfactory epithelium and terminal nerve. Belongs to the NSMF family.