Phase II Glutathione Conjugation Metabolism of Herbicides or Xenobiotics in Plants passel Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification Glutamylcysteine SynthetaseGlutathione Synthetase: Domain Structure and Identification of Residues Important in Substrate and Glutathione Binding Biochemistry Mechanistic Insights into the NHydroxylations Catalyzed by the Binuclear Iron Domain of SznF Enzyme: Key Piece in the Synthes