Fig. 11. Change in SH-group concentration (mkM/ml) in soluble proteins of wheat gluten caused by thiol-proteindisulfide oxidoreductase (TPDO). 1. Incubation medium consisting of gluten proteins and GSH cofactor in 0.1 M Tris-HCl buffer and 1 mM EDTA. 2. Incubation medium consisting of gluten proteins, GSH, and TPDO (20 mkM).