L Glutathione vs. Glutathione: What's the Difference? Invigor Medical Kokumi! If you want a whole picture on umami, there's the core concept of glutamate, then a second level of umami boosting from ribonucleotides like IMP. There's a third layer that's not Deciphering the Conformations of Glutathione Oxidized Peptide: A Comparative NMR Study in Solution and SolidState Environments Senapati 2025 Magnetic Resonance in Chemistry Wiley Online Library Glutamylcysteine SynthetaseGlutathione Synthetase: Domain Structure and Identification of Residues Important in Substrate and Glutathione Binding Biochemistry