Annexin V, offically named Annexin AV, is a human gene encoded by the symbol, ANXA5. It may also be known as: Anchorin CII; Annexin-5; Calphobindin I; CBP-I; Endonexin II; Lipocortin V; Placental anticoagulant protein 4; Placental anticoagulant protein I; Thromboplastin inhibitor; Vascular anticoagulant-alpha; VAC-alpha; ANX5; ENX2; HEL-S-7; RPRGL3. The encoded protein has an amino acid length of 320 and a mass of 35.9 kDa. Other isoforms may exist. Annexin A5 is a member of the Annexin family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog, Chicken.