>sp|Q46FV4|MER_METBF 5,10-methylenetetrahydromethanopterin reductase OS=Methanosarcina barkeri GN=mer
MKFGIEFVPSDPALKIAYYAKLSEQQGFDHVWITDHYNNRDVYSTLTVLALNTNSIKIGP
GVTNSYTRNPAITASSIASIAEISGGRAVLGLGPGDKATFDAMGIAWKKPLATTKEAIQA
IRDFISGKKVSMDGEMIKFAGAKLAFKAGNIPIYMGAQGPKMLELAGEIADGVLINASHP
KDFEVAVEQIKKGAEKAGRDPSEVDVTAYACFSIDKDPVKAVNAAKVVVAFIVAGSPDLV
LERHGIPVEAKSQIGAAIAKGDFGALMGGLVTPQMIEAFSICGTPDDCMKRIKDLEAIGV
TQIVAGSPIGPAKEKAIKLIGKEIIAKM