Transglutaminase (TGase) catalyses the crosslink of proteins by forming e-(g-glutamyl) lysine isopeptide bonds and requires the binding of Ca2+ for its activity. In mammals, eight distinct TGase isoenzymes have been identified. Tissue transglutaminase (tTGase), also known as TGase 2, has four distinct domains: N-terminal b-sandwich, catalytic core and two C-terminal b-barrel domains. tTGase may have a role in cell death, cell proliferation, cell differentiation, and receptor-mediated endocytosis. In the Alzheimer's disease brain, the elevated tTGase activity is manifested by polymerization of a number of proteins, including Ab peptide, b-amyloid precursor protein and the tau protein, with formation of neurofibrillary tangles.
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Protein Aliases: C polypeptide; C polypeptide, protein-glutamine-gamma-glutamyltransferase; Erythrocyte transglutaminase; G alpha h; G(h); G-ALPHA-h; GNAH; Heart G alpha(h); hhG alpha(h); Isopeptidase TGM2; Protein G alpha(h); Protein G(h); Protein-glutamine deamidase TGM2; Protein-glutamine dopaminyltransferase TGM2; Protein-glutamine gamma-glutamyltransferase 2; Protein-glutamine histaminyltransferase TGM2; Protein-glutamine noradrenalinyltransferase TGM2; Protein-glutamine serotonyltransferase TGM2; protein-glutamine-gamma-glutamyltransferase; RP5-1054A22.2; TG C; TG(C); TG2; TGase 2; TGase C; TGase H; TGase II; TGase-2; TGase-H; TGC; Tissue transglutaminase; Tissue type transglutaminase; tissue-type transglutaminase; Transglutaminase 2 C polypeptide; transglutaminase 2, C polypeptide; Transglutaminase C; Transglutaminase H; Transglutaminase II; Transglutaminase-2; tTG
Gene Aliases: G[a]h; TG(C); TG2; TGase2; TgaseII; TGC; TGM2; tTG; tTGas
Molecular Function: transferase