>4R81_1|Chains A, B, C, D|NADH dehydrogenase|Methanothermobacter marburgensis (79929) MASMHVYILFAHPSRKSFSREVLEAFTEGLSEAGHTYEVGDLYRMNFRSELSQEEYLREISQEAGSPLPEDVMEEHERIGRADALAFIYPLWWSDCPAKLKGWFDRVWTYGYAYFYEDGERGTRIDIEKAVVLCSAGHTEEDLEGTGIAESMRSVMLGDRLLGVGVKNVTMEILGGMVPGDDSCREINLMRARRAGRNLEHHHHHH