tissue transglutaminase (ttg, tg2) protein. plays important role in celiac disease; anti-ttg antibodies are diagnostic marker of

tissue transglutaminase ttg tg2 glutamine glutamate glutamic celiac coeliac disease gluten gliadin enzyme deamidation autoantigen antitransglutaminase ata antibody sensitivity glutens pdb2q3z protein crosslinking sprue autoantibody structure peptide amino acid molecule polypeptide polymer atoms science scientific health molecular model