ENOX2 is a symbol for the gene, Ecto-NOX disulfide-thiol exchanger 2, in humans. Other names include: APK1 antigen; Cytosolic ovarian carcinoma antigen 1; Tumor-associated hydroquinone oxidase; tNOX; APK1; COVA1. The encoded protein is an enzyme with an amino acid length of 610 and a mass of 70.1 kDa. Other isoforms may exist. ENOX2 is a member of the ENOX family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Chicken.