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Can cross the blood-brain barrier, where it exerts an antioxidant effect, helps to maintain healthy cellular energy metabolism and supports brain function

Therefore, methionine has to be exogenously introduced into the human body either within the diet or as a supplement.12 Methionine serves several key roles in the human body such as: Substrate in the production of critical hormones and proteins including L-cysteine, carnitine, adrenaline, choline, and melatonin, among others

2016;7:e2307

Inactivation of human peroxiredoxin I during catalysis as the result of the oxidation of the catalytic site cysteine to cysteine-sulfinic acid