2.5.1.57	5,5'-dithio-bis(2-nitrobenzoic acid)	-	2373	
2.5.1.57	Ba2+	1 mM, 93% decrease of activity	111	
2.5.1.57	Ca2+	1 mM, 76% decrease of activity	15	
2.5.1.57	Co2+	1 mM, 15% decrease of activity	23	
2.5.1.57	Cu2+	1 mM, 68% decrease of activity	19	
2.5.1.57	EDTA	-	21	
2.5.1.57	EDTA	10 mM, complete inhibition	21	
2.5.1.57	Fe2+	1 mM, 79% decrease of activity	25	
2.5.1.57	Mg2+	12.5 mM Mg2+ decrease the ability for N-acetylneuraminate 9-phosphate synthesis by almost half, while the 2-keto-3-deoxy-D-glycero-D-galacto-nonulosonic acid 9-phosphate synthetic activity drops by 20%	6	
2.5.1.57	N-ethylmaleimide	-	49