Frontiers Redox regulation of enzymes involved in sulfate assimilation and in the synthesis of sulfur containing amino acids and glutathione in plants GLUTATHIONEPathway for the biosynthesis of glutathione ** Glutathione is the body's most important antioxidant. Glutathione is made by the coming together chemically of three amino acids. The "Transmethylation Pathway" starts with Homocysteine Three amino acids walk into a bar.the adventures of supporting glutathione synthesis in fatty liver disease using serine & nicotinamide riboside Dr. Kara Fitzgerald Frontiers Metabolism of Amino Acids in Cancer