Enables semaphorin receptor activity. Involved in nervous system development and positive regulation of cytoskeleton organization. Acts upstream of or within generation of neurons; hippocampus development; and negative chemotaxis. Predicted to be located in plasma membrane. Predicted to be integral component of membrane. Predicted to be part of semaphorin receptor complex. Predicted to be integral component of plasma membrane. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; integumental system; and sensory organ. Orthologous to human PLXNA3 (plexin A3). [provided by Alliance of Genome Resources, Apr 2022]