PMCA2 is an alias for the gene, ATPase, Ca++ transporting, plasma membrane 2, in humans. Other names include: Plasma membrane calcium-transporting ATPase 2; Plasma membrane calcium ATPase isoform 2; Plasma membrane calcium pump isoform 2; plasma membrane Ca2+ pump 2ai. The encoded protein is an enzyme with an amino acid length of 1243 and a mass of 136.9 kDa. Other isoforms may exist. PMCA2 is a member of the Cation transport ATPase (P-type) (TC 3.A.3) family, Type IIB subfamily. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.