>1Z69_1|Chains A, B, C, D|Coenzyme F420-dependent N(5),N(10)-methylenetetrahydromethanopterin reductase|Methanosarcina barkeri (2208)
MKFGIEFVPSDPALKIAYYAKLSEQQGFDHVWITDHYNNRDVYSTLTVLALNTNSIKIGPGVTNSYTRNPAITASSIASIAEISGGRAVLGLGPGDKATFDAMGIAWKKPLATTKEAIQAIRDFISGKKVSMDGEMIKFAGAKLAFKAGNIPIYMGAQGPKMLELAGEIADGVLINASHPKDFEVAVEQIKKGAEKAGRDPSEVDVTAYACFSIDKDPVKAVNAAKVVVAFIVAGSPDLVLERHGIPVEAKSQIGAAIAKGDFGALMGGLVTPQMIEAFSICGTPDDCMKRIKDLEAIGVTQIVAGSPIGPAKEKAIKLIGKEIIAK