... bound to the metal, in the company of a water oxygen, from the apical positions. The manga-nese was only 0.06 A ˚out of the equatorial plane(Table 3). The angles around the metal cofactor sug-gested ... hyper-thermophilic crenarchaeon, Aeropyrumpernix K1. DNA Res 6, 83–101.11 Nakamura T, Yamamoto T, Inoue T, Matsumura H,Kobayashi A, Hagihara Y, Uegaki K, Ataka M, Kai Y& Ishikawa K (2006) ... UegakiK, Hagihara Y, Ataka M & Ishikawa K (2005)Crystallization and preliminary X-ray diffractionanalysis of thioredoxin peroxidase from the aerobichyperthermophilic archaeon Aeropyrum...