1.7.1.15	expressed in Escherichia coli BL21(DE3) cells	
1.7.1.15	expressed in Escherichia coli JCB323 cells	
1.7.1.15	expressed in Escherichia coli JM109 cells	
1.7.1.15	expressed in Escherichia coli strain JCB387	
1.7.1.15	expression in Escherichia coli	
1.7.1.15	recombinant expression as two separate fragments in Escherichia coli, the N-terminal Nia1-Mo-heme fragment and a C-terminal fragment containing hinge 2 and the FAD-domain, residues 628-917	
1.7.1.15	recombinant expression as two separate fragments in Escherichia coli, the N-terminal Nia2-Mo-heme fragment and a C-terminal fragment containing hinge 2 and the FAD-domain, residues 626-917