Crystal Structure of coenzyme F420H2 oxidase (FprA), a diiron flavoprotein, reduced state

Structure of coenzyme F420H2 oxidase (FprA), a di-iron flavoprotein from methanogenic Archaea catalyzing the reduction of O2 to H2O.

MKAAAKRISDGVYWTGVLDWDLRNYHGYTLQGTTYNAYLVCGDEGVALIDNSYPGTFDELMARVEDALQQVGMERVDYII
QNHVEKDHSGVLVELHRRFPEAPIYCTEVAVKGLLKHYPSLREAEFMTVKTGDVLDLGGKTLTFLETPLLHWPDSMFTLL
DEDGILFSNDAFGQHLCCPQRLDREIPEYILMDAARKFYANLITPLSKLVLKKFDEVKELGLLERIQMIAPSHGQIWTDP
MKIIEAYTGWATGMVDERVTVIYDTMHGSTRKMAHAIAEGAMSEGVDVRVYCLHEDDRSEIVKDILESGAIALGAPTIYD
EPYPSVGDLLMYLRGLKFNRTLTRKALVFGSMGGNGGATGTMKELLAEAGFDVACEEEVYYVPTGDELDACFEAGRKLAA
EIRR

0.001M DDT, 0.2M ammonium sulfate, 0.1M MES/KOH, 30% PEG MME 5000, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 283K

HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
beta-lactamase like domain, flavodoxine like domain, OXIDOREDUCTASE