Predicted to enable chemorepellent activity; neuropilin binding activity; and semaphorin receptor binding activity. Involved in apoptotic process and negative regulation of axon extension. Acts upstream of or within axon guidance. Located in axon and dendrite. Human ortholog(s) of this gene implicated in hypogonadotropic hypogonadism 16 with or without anosmia. Orthologous to human SEMA3A (semaphorin 3A). [provided by Alliance of Genome Resources, Apr 2022]