Anti-plexin A3 antibodies are used for the immunodetection of the protein encoded by the PLXNA3 gene. In humans, the canonical protein has a reported length of 1871 amino acid residues and a mass of 207.7 kDa. Its subcellular localization is in the cell membrane. A member of the Plexin protein family, it is known to be involved with axon guidance and brain development. Post-translational modifications have been described, including glycosylation. Other names for this target antigen include plexin-4, semaphorin receptor SEX, and Sex chromosome X transmembrane protein of HGF receptor family 3. Gene orthologs have been identified in the mouse, rat, bovine, zebrafish and chimpanzee species. A number of plexin A3 antibodies have been mentioned in research publications and have associated citations. These antibodies are most commonly used in Western Blot experiments, among other applications.