Gamma-glutamyltransferase 7 is a human gene encoded by the symbol, GGT7. It may also be known as: GGT 7; Gamma-glutamyltransferase-like 3; Gamma-glutamyltransferase-like 5; Gamma-glutamyltranspeptidase 7; Glutathione hydrolase 7; D20S101; GGT4; GGTL3; GGTL5; dJ18C9.2. The encoded protein is an enzyme with an amino acid length of 662 and a mass of 70.5 kDa. Other isoforms may exist. Gamma-glutamyltransferase 7 is a member of the Gamma-glutamyltransferase family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog, Chicken.