1.17.1.9 additional information no loss of activity after 5 h at pH 6.5, 30°C, after 5 h with 20 mM ethyl 4-chloro-3-oxobutanoate, 20 mM ethyl-4-bromo-3-oxobutanoate, 20 mM ethyl 2-chloro-3-oxobutanoate, or 20 mM 2,3'-dichloroacetophenone 2 1.17.1.9 additional information not inhibitory: Mg2+, Mn2+, Co2+, Ni2+, Cd2+, Zn2+, Ca2+, Fe2+, Fe3+, Cu2+ 2 1.17.1.9 additional information no notable effect on the enzyme activity is observed when adding NH4+ or HPO2- 2 1.17.1.9 ATP inhibition is greater at acidic pH than at neutral pH 4 1.17.1.9 ATP 45% inhibition at 50 mM; 56% inhibition at 50 mM 4 1.17.1.9 NADPH - 5 1.17.1.9 NADPH competitive 5 1.17.1.9 NADPH strong inhibition 5 1.17.1.9 NADPH 26% inhibition at 0.24 mM; 58% inhibition at 0.24 mM 5 1.17.1.9 Mg2+ 89.93% residual activity at 10 mM 6