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J Biol Chem 104:415421 Damle MS, Newton LAA, Villalba MM, Leslie R, Davis J (2010) Plumbagin: a new route to the electroanalytical determination of cystine

We know that standard glutathione molecules are fragile

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Sulfur amino acids and skeletal muscle

Results Inhibition of glutathione metabolism depletes neuronal glutamate and affects excitatory transmission To test the hypothesis that glutathione is a significant reservoir for glutamate, we treated neuronal cells with molecular inhibitors targeting enzymes of the glutathione metabolic cycle: L-2-imidazolidone-4-carboxylate (2I4C), acivicin, L-buthionine sulfoximine (BSO), and sulforaphane