Frontiers Redox regulation of enzymes involved in sulfate assimilation and in the synthesis of sulfur containing amino acids and glutathione in plants Amino Acid Metabolism for Human Physiology Springer Nature Link Proteins and Amino Acids1 Basicmedical Key Impairment of intestinal glutathione synthesis in patients with inflammatory bowel disease Gut 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