Achromobacter sp. MMT - 764372 Agrobacterium fabrum - 764679 Agrobacterium fabrum C58 - 764679 Aliivibrio fischeri - 395176 Anaeromyxobacter dehalogenans - 742319 Bradyrhizobium diazoefficiens Q89EN5 i.e. catalytic subunit NapA 765355 Bradyrhizobium diazoefficiens USDA 110 Q89EN5 i.e. catalytic subunit NapA 765355 Bradyrhizobium japonicum - 742319, 742380 Bradyrhizobium japonicum Q8KY07 i.e. electron transfer subunit NapB 765355 Bradyrhizobium japonicum JCM 10833 - 742380