HTGP is an alias for the gene, Transglutaminase 4, in humans. Other names include: Protein-glutamine gamma-glutamyltransferase 4; Prostate transglutaminase; Prostate-specific transglutaminase; Transglutaminase P; TG(P); TGP; TGase P; Transglutaminase-4; TGase-4; Fibrinoligase; Protein-glutamine gamma-glutamyltransferase 4 . The encoded protein is an enzyme with an amino acid length of 684 and a mass of 77.1 kDa. Other isoforms may exist. HTGP is a member of the Transglutaminase superfamily, Transglutaminase family. This gene shares homology with other species, including: Mouse, Rat, Frog, Chicken.