HECTD3 encodes the human gene, HECT domain containing E3 ubiquitin protein ligase 3. It may also be known as: E3 ubiquitin-protein ligase HECTD3; HECT domain-containing protein 3; E3 ubiquitin-protein ligase HECTD3 . The encoded protein is an enzyme with an amino acid length of 861 and a mass of 97.1 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.