1.7.7.1	cyanide	1 mM	118	
1.7.7.1	o-phenanthroline	15% inhibition at 5 mM	239	
1.7.7.1	SO32-	24% inhibition at 10 mM	902	
1.7.7.1	hydroxylamine	34% inhibition at 10 mM	85	
1.7.7.1	N-ethylmaleimide	47% inhibition at 1 mM	49	
1.7.7.1	8-hydroxyquinoline	7% inhibition at 5 mM	321	
1.7.7.1	pyridoxal-5'-phosphate	75% inhibition of the enzyme with ferredoxin as electron donor after exposure to NaBH4, but no inhibition of the enzyme with methyl viologen as electron donor	4558	
1.7.7.1	cyanide	90% inhibition at 1 mM	118	
1.7.7.1	cyanide	92% inhibition at 0.1 mM	118	
1.7.7.1	cyanide	almost complete inhibition from 0.02 mM to 0.2 mM	118