Description
Glutathione (GSH) is a tripeptide (γ-glutamylcysteinylglycine) widely distributed in both plants and animals. GSH is involved in maintenance of protein sulfhydryl reduction status. The concentration of GSH ranges from a few micromolar in plasma to several millimolar in tissues such as liver. Mixed protein glutathionyl disulfides are a post translational protein modification of growing interest. Protein-S-glutathionylation may modify the activity of a large number of cell proteins, including metabolic, structural, cytoskeletal, and signaling proteins. PSSG detection methods can employ GSH adduct antibodies, GSH derivatives, and differential labeling systems based on the 'Biotin-Switch' method