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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A polypeptide, C10H17N3O6S, of glycine, cysteine, and glutamic acid that occurs widely in plant and animal tissues and is important in biological oxidation-reduction reactions.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A tripeptide formed from glutamic acid, cysteine and glycine, that is active in many biological redox reactions


gluta(mine) + thi(o)- + -one.
(American Heritage® Dictionary of the English Language, Fourth Edition)
gluta- +‎ thione (Wiktionary)



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