AC9 is an alias for the gene, Adenylate cyclase 9, in humans. Other names include: Adenylate cyclase type 9; ATP pyrophosphate-lyase 9; Adenylate cyclase type IX; ACIX; Adenylyl cyclase 9; Adenylate cyclase type 9 . The encoded protein is an enzyme with an amino acid length of 1353 and a mass of 150.7 kDa. AC9 is a member of the Adenylyl cyclase class-4/guanylyl cyclase family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.