Definition: Transglutaminases catalyze cross-linking of proteins at a GLUTAMINE in one chain with LYSINE in another chain. They include keratinocyte transglutaminase (TGM1 or TGK), tissue transglutaminase (TGM2 or TGC), plasma transglutaminase involved with coagulation (FACTOR XIII and FACTOR XIIIa), hair follicle transglutaminase, and prostate transglutaminase. Although structures differ, they share an active site (YGQCW) and strict CALCIUM dependence.
distinguish X refs GLUTAMINYL-PEPTIDE GAMMA-GLUTAMYLTRANSFERASES and TRANSGLUTAMINASES from GAMMA-GLUTAMYL TRANSPEPTIDASE which is involved with glutathione metabolism; PLASMA TRANSGLUTAMINASE see FACTOR XIIIA is also available
ExamplesFactor XIIIa
Other names Protein-Glutamine gamma-Glutamyltransferases; Glutaminyl-Peptide Gamma-Glutamyltransferases; gamma-Glutamyltransferases, Protein-Glutamine; Protein Glutamine gamma Glutamyltransferases; Glutaminyl Peptide Gamma Glutamyltransferases; Gamma-Glutamyltransferases, Glutaminyl-Peptide