Azotobacter chroococcum	P15332 i.e. subunit VnfD, P15334 i.e. subunit VnfK, P15333 i.e. subunit VnfG	744007, 744257, 744258, 744260, 744261, 744787	
Azotobacter chroococcum MCD1	P15332 i.e. subunit VnfD, P15334 i.e. subunit VnfK, P15333 i.e. subunit VnfG	744007, 744257, 744258, 744260, 744261, 744787	
Azotobacter vinelandii	-	744020, 745204, 745388, 745846, 746492	
Anabaena azotica	-	744180	
Anabaena azotica FACHB-118	-	744180	
Azotobacter chroococcum	-	744259	
Trichormus variabilis	-	745197	
Azotobacter vinelandii DJ	-	745204