Cell signalling and the glutathione redox system Glutathione Disulfide Gssg Molecule Oxidized Form Stock Illustration 2629142013 Shutterstock Reaction formulas of disulfide bond reduced by a) GSH or b) DTT. c) Download Scientific Diagram Disulfide bond formation by exported glutaredoxin indicates glutathione's presence in the E. coli periplasm PNAS Reactivity of disulfide bonds is markedly affected by structure and environment: implications for protein modification and stability Scientific Reports