GO:0016733

iron-molybdenum cofactor biosynthesis protein, subunit N (NCBI)
NifH/frxC family:ATP/GTP-binding site motif A (P-loop) (NCBI)
Nitrogen fixation-related protein (NCBI)
Oxidoreductase, nitrogenase component 1 (NCBI)
nitrogenase iron protein (nitrogenase component II) (NCBI)
nitrogenase iron-molybdenum cofactor biosynthesis protein (NCBI)
Oxidoreductase, nitrogenase component 1 (NCBI)
bacteriochlorophyllide reductase iron protein subunit BchX (RefSeq)