Superoxide reductase from Desulfoarculus baarsii
  Superoxide radical (O2.-) is the univalent reduction product of molecular oxygen and belongs to the group of the so-called toxic oxygen derivatives. For years the only enzymatic system known to catalyze the elimination of superoxide was the superoxide dismutase (SOD), which catalyzes dismutation of superoxide radical anions to hydrogen peroxide and molecular oxygen 
Vincent Nivi\`ere (LCBM - UMR 5249), Murielle Lombard (LCBM - UMR   5249)
q-bio.BM