Jensen, P H, Schuler, E, Woodrow, G, Richardson, M, Goss, N, Hojrup, P, Petersen, T E & Rasmussen, L K 1994, ' A unique interhelical insertion in plasminogen activator inhibitor-2 contains three glutamines, Gln 83, Gln 84, Gln 86, essential for transglutaminase-mediated cross-linking ', Journal of Biological Chemistry, vol. 269, no. 21, pp. 15394-15398 .