Extracellular transglutaminase 2 is catalytically inactive, but is transiently activated upon tissue injury.
Siegel M, Strnad P, Watts RE, Choi K, Jabri B, Omary MB, Khosla C. Extracellular transglutaminase 2 is catalytically inactive, but is transiently activated upon tissue injury. PLoS One. 2008 Mar 26; 3(3):e1861.