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“The enzyme had maximal activity in the presence of Mg2+ (40 muM) and Mg2+ (4 mM) stabilized the enzyme at 37 degrees C. Cupric ion (0.5 mM) inhibited (50%) enzyme activity in the presence or absence of Mg2+.”
The Journal of biological chemistry • 1979 | View Paper
“The result showed that Mg(II) has weaker binding capacity with the drug comparing Cu(II) , but both Mg(II) and Cu(II) can obviously reduce the binding constant of DNA with the drug.”
Zeitschrift fur Naturforschung. C, Journal of biosciences • 2003 | View Paper
“Zn++, Ni++, Cu++ , Fe++, Sn++ and Hg++, in the presence of 5mM Mg++ , inhibited cAMP PDE activity whereas these divalent metal ions alone did not affect enzyme activity if Mg++ were absent.”
Research communications in chemical pathology and pharmacology • 1983 | View Paper
“It is established that Ca++ activates, and Fe++ has not effect on the activity of acid and alkaline DNases, while Mg++ , Mn++ and especially Co++, Zn++, Cd++, Cu++ have an inhibitory effect on them.”
Ukrains'kyi biokhimichnyi zhurnal • 1975 | View Paper
“The presence of Mg2+ , Ca2+ and Ba2+ cations strongly activated the enzyme; however, Cu2+ and Zn2+ cations had inhibitory effects on the enzymatic activity.”