Thyroglobulin is a human gene encoded by the symbol, TG. It may also be known as: Tg; AITD3; TGN. The encoded protein has an amino acid length of 2768 and a mass of 304.8 kDa. Other isoforms may exist. Thyroglobulin is a member of the Type-B carboxylesterase/lipase family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.