Anti-plexin A1 antibodies are used in the immunodetection of the protein encoded by the PLXNA1 gene. In humans, the canonical protein has a reported length of 1896 amino acid residues and a mass of 211.1 kDa. Its subcellular localization is in the cell membrane. It is notably expressed in fetal brain, lung, liver and kidney. A member of the Plexin protein family, it is known to be involved with the regulation of cell shape. Post-translational modifications have been described, including glycosylation. Other names for this target antigen include NOV, NOVP, PLXN1, plexin 1, semaphorin receptor NOV, and DWOPNED.