Laboratory evolution of glutathione biosynthesis reveals natural compensatory pathways Nature Chemical Biology A locally activatable sensor for robust quantification of organellar glutathione Nature Chemistry Mode of action of Glutathione Amino acid Precursors (GAP) and functions Download Scientific Diagram Glycine and N acetylcysteine (NAC) are amino acidbased nutrients that serve as precursors for glutathione, one of the body's most important intracellular antioxidants. Glutathione plays a central role in reducing oxidative stress, supporting