>sp|P19067|NIFK_SINFN Nitrogenase molybdenum-iron protein beta chain OS=Sinorhizobium fredii GN=nifK1 MPQSAEKILDHAPLFREPEYRQMLAEKKLNFECPHPERLVTDQREYSKGWEYREKNLARE ALVVNPAKACQPLGAVFAAAGFERTMSFVHGSQGCVAYYRSHLSRHFKEPASAVSSSMTE DAAVFGGLKNMVDGLANTYALYDPKMIAVSTTCMAEVIGDDLHGFIENAKSEGAVPPEFD VPFAHTPAFVGSHVDGYDSMVKGILEHFWKGQARTQAAGTINIIPGFDGFCVGNNRELQR LLTLMGVSYTFIQDASDQFDTPSDGEYRMYDGGTTIKALRAALNAEATLSLQHYNSRKTL EYCREVGQATAAFHYPLGINATDAFLMKVSAISGREIPETIRLERGRLVDAMADSQSWLH GKTYAIYGDPDFVYAMARFVMETGGEPRHCLATNGTAAWQAEMTELLASSPFGKQAKVWP GKDLWALRSLLFTEPVDLLIGNSYGKYLERDTGTPLIRLMFPIFDRHHHHRFPLMGYQGG LRLLTTILDTIFDRLDRETMQTAVTDYSYDLTR