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, New Insights into the Roles of Cysteine and Homocysteine in Pathological Processes IntechOpen Disruption in glutathione metabolism and altered energy production in the liver and kidney after ischemic acute kidney injury in mice Scientific Reports Glutathione You Are The Healer 13: Metabolism of Methionine & Cysteine Amino Acids Metabolism Biochemistry N'JOY Biochemistry