Atp8b3 is a symbol for the gene, ATPase, aminophospholipid transporter, class I, type 8B, member 3, in humans. Other names include: Phospholipid-transporting ATPase IK; ATPase class I type 8B member 3; Phospholipid-transporting ATPase IK ; aminophospholipid translocase ATP8B3; potential phospholipid-transporting ATPase IK; ATPIK. The encoded protein is an enzyme with an amino acid length of 1300 and a mass of 146.8 kDa. Atp8b3 is a member of the Cation transport ATPase (P-type) (TC 3.A.3) family, Type IV subfamily. This gene shares homology with other species, including: Mouse, Rat, Frog, Chicken.