>sp|Q57302|VNFK_TRIV2 Nitrogenase vanadium-iron protein beta chain OS=Trichormus variabilis GN=vnfK MTLAVNKKERAGVINPIFTCQPAGAEYATIGVKDCIPLVHGGQGCSMFVRLIFAQHLKEN FDIASSSLHEASAVFGGMPRIEEGVKTLVARYPDLRLIPIITTCSTETIGDDVEGTINKV NKFLKKEYPNREVKLIPVHTPSYRGSQVTGYDAGVTSLITNLAKKGEPNGKLNIITGWVN PGDVTEVKHILSEMGVDANILLDTETFNAPTMPDKNSFTFGNTTIEDIAGSANAIGTIAL CKYEGGNAAKFLQEQFDVPAIVGPTPIGIKNTDAWLQNIKKLTGKPIPESLVVERGKAID SLADLAHMYFANKRVAIYGDPDLVIGLAEFCLEVELEPVLLLLGDDNQAASKDPRLAELA KRANHAEYDIDVIWNADLWELESRVKEKGDIDLILGHSKGRYIAIDNKIPMVRVGFPTFD RAGLWKNPVIGYRGAEWLGDAIANAMFADMEYKHDREWILNVW