>6HAE_1|Chains A, B[auth K]|5,10-methenyltetrahydromethanopterin hydrogenase|Methanococcus aeolicus (strain ATCC BAA-1280 / DSM 17508 / OCM 812 / Nankai-3) (419665) MKVAILGAGCYRSHAACGITNFSRAAEVANKVGIPEITMTHSTITMGAELLHLVDEIDEVVVSDPCFAEEPGLIIIDEFDCKEVMEAHLAGKAEDVMPAIRDAVKAKAKDSPKPPKGCIHFVNPEKVGLKVTSDDREAIEGADIVITWLPKGGSQPAIIEKFVDAIKEGAIVTHACTIPTPKFAKIFKDLGREDLNIVSFHPGCVPEMKGQVYLSEGYASEEAVEKLYKIAKISRGTAFKMPANLISPVCDMGSAVTAPVYAAILSYRDAVTNILGAPADFAQMMADEAITQMLELMRNEGIQNMENKLNPGALTGTADSMCFGPLSELLPASLKVLEEHKK