Critical Roles of the CysteineGlutathione Axis in the Production of Glutamyl Peptides in the Nervous System Homocysteine and methionine are key amino acids with a vital connection to glutathione one of your body's most important substances! Methionine is abundant in many foods, so protein isn't the culprit, Homocysitaconate controls inflammation through reshaping methionine metabolism and N homocysteinylation: Cell Metabolism Methionine an overview ScienceDirect Topics