... Journal compilation ª 2010 FEBS 3189 The multicopper oxidase from the archaeon Pyrobaculum aerophilum shows nitrous oxide reductase activity Andre´T. Fernandes1, Joa˜o M. Damas1, Smilja ... transfer; DSC, differential scanning calorimetry; MCO, multicopper oxidase; McoP, multicopper oxidase from Pyrobaculum aerophilum ;N2OR, nitrous oxide reductase; RR, resonance Raman;SGZ, syringaldazine; ... to nitrite, nitrite to nitric oxide, nitric oxide to nitrous oxide, and finally nitrous oxide to dini-trogen [20,21]. The nitrate and nitric oxide reductasesof P. aerophilum have been isolated...