<prompt> Enzymes that protects the brain from free radical injury isMyeloperoxidaseSuperoxide dismutaseMAOHydroxylase  <response>: Ref Robbins 7e p17; Harrison 17e p2572;9e p48 Superoxide dismutase SOD, EC 1.15.1.1 is an enzyme that alternately catalyzes the dismutation or paitioning of thesuperoxide O2- radical into either ordinary molecular oxygen O2 or hydrogen peroxide H2O2. 