>tr|Q3J0I1|Q3J0I1_CERS4 Nitrogen fixation protein NifU OS=Cereibacter sphaeroides GN=nifU1 MLDETGKALDLFFNPRNAGPLEAADAVGTAGSLEVGDAIRLMLRIEAGRVAEARFLAFGG AHAIACGSALTVLVTGLDLAAARAVTPEEIEAAVGGLPAPRRPAAARAWSALQIALAAYE GRTFVAPEPAPVPAPAAAPVRLLAPKHDSQPRIVRDVPLAPAEEARLIAEVIESVRPRLR ADGGDVTLVAVEGSKVRVHLTGACSGCQLAALTLGGLQKRLADTLGRPIRVIPEEKRPLV SIAGAR