>6ZK8_1|Chains A, B[auth O]|Coenzyme F420H2 oxidase (FprA)|Methanothermococcus thermolithotrophicus (2186) MKADAVKIADGVYWVGVLDWDIRMYHGYTLNGTTYNAYLVFGDDKVALIDNTYPGTSAQMWGRIKDACEKEGREFKIDVIVQNHVEKDHSGALPEIHKKFPEAPIYCTEVAVEGLVKHFPSLKGAPFKVVKSLESIDLGGKTLTFLEAPLLHWPDSMFTLYAEEGILFSNDAFGQHLCFTQRFDHEIPENILMDANQKFYANLITPLSKLVLKKFKEVIELGLLEKIKMIAPSHGQIWTDPMKVIGAYQDFATGKCKDKVTIVYDTMHGSTQKMAHAFAEGIMSEGVDVKMYFLHNDERSEIVKDILDSKAFLLGAPTIYDEPFPSVGDLIYYLKGLKFNRTGLKRLALAFGSMGGNGGGTKVLAEKLKECGFEVLDEYELYYVPTEDELEKCYNMGKRLAVKVKEMKTE