Acidovorax wautersii	-	764091	
Acidovorax wautersii QZ-4	-	764091	
Arabidopsis thaliana	isoform Nia1, cf. EC 1.7.1.1	765636	
Arabidopsis thaliana	isoform Nia2, cf. EC 1.7.1.1	765636	
Bacillus subtilis	-	392944	
Bacillus subtilis JH642	-	392944	
Escherichia coli	-	392924, 392925, 392926, 392927, 721517, 764043, 765307	
Escherichia coli	NirD polypeptide	723207	
Priestia megaterium	A0A8D4BLJ9 i.e subunit NasE, A0A8D4BRF4 i.e. electron transfer subunit NasB	764856	
Priestia megaterium WSH-002	A0A8D4BLJ9 i.e subunit NasE, A0A8D4BRF4 i.e. electron transfer subunit NasB	764856