Ready-to-use ELISA kits are available for the detection of Plxna4a, an alias of the protein, plexin A4. The official gene symbol is PLXNA4. The protein, with a mass of 212.5 kDa and length of 1894 residues, is reported to be membrane-associated. It is a member of the Plexin family and may be known by other names, including: PRO34003, PLXNA4A, PLEXA4, FAYV2820, and epididymis secretory sperm binding protein.