>sp|P0CW52|NIFK_METMI Nitrogenase molybdenum-iron protein beta chain OS=Methanococcus maripaludis GN=nifK MSELNVITKERTAVINPIVTCQPLGAMYAVSGIERGMPLVHGSQGCSTFVRYGFARHFRE PADIAVTSLHEDAAVFGGRKNLISGLGNLAARFKPDVMGVVTTCSSEIIGDDVAGFIKTA KVEIAKKMGEEAANKIKIVQINTPSFVEHQFKGYDNAIKAIVDTLAEPKDEENGKLIIIP GIVNPGDIREIKHMLSLMGVEGILLTDTSDPFDSPLRPSKADKNPYYQKGGTPLADLQDC ANSLGTISLANYANSAPASLEKKYNMPSKVSEAPIGIQNTDSFIRTVKKFTGNDVTDEIL DERGIVIDAMADVASRYLFGRKVAIYGDPSITVGMARFVAELGMIPKVVCTGVKNEYFVN DLKKVAKESDEDIDALFGQDLRALDVYLKENPVDLMIGSSDGRLMAKDLGIPLYRVGYPV YDRVGYQRRPIIGYNGALNLVDGITNTILDKYYETQDWKLQQ