Homologs of Rru_A1011 from Rhodospirillum rubrum S1H
Nitrogenase molybdenum-iron protein alpha chain (NCBI)
SEED: Nitrogenase (molybdenum-iron) alpha chain (EC 1.18.6.1)
KEGG: nitrogenase molybdenum-iron protein alpha chain
62 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser