Item Scheme showing the enzymatic reactions that catalyze the pyruvate dehydrogenase complex, including pyruvate dehydrogenase activity and diaphorase activity of DLD (A) as well as the glutathione reductase peroxidase activity (B). Antioxidant Potential of Glutathione and Crosstalk with Phytohormones in Enhancing Abiotic Stress Tolerance in Crop Plants The role of ROS in exercise mediated WAT browning. Exercise causes oxidative stress in skeletal muscle and reduces the level of GSH. GSH provides electrons for glutathione peroxidase (GPXs), which eliminates H2O2. Reducing Pentose Phosphate Pathway (PPP), Purine and Pyrimidine Metabolism Cell Biology, Genetics, and Biochemistry for Pre Clinical Students