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EC Number
Activating Compound
Commentary
Reference
3.1.26.4
(NH4)2SO4
100 mM, isoenzyme I and II are activated by 50%. Isoenzyme II shows optimal activity at 50 mM, 80% inhibition at 200 mM
134390
3.1.26.4
(NH4)2SO4
30% activation of Mg2+-dependent enzyme
134394
3.1.26.4
(NH4)2SO4
4fold stimulation at an optimal concentration of 18 mM
134397
3.1.26.4
(NH4)2SO4
optimal concentration: 25 mM
134387
3.1.26.4
(NH4)2SO4
ribonuclease H I acts optimally at about 30 mM (NH4)2SO4 in the case of Mn2+ activation, in the presence of Mg2+ ions the enzyme acts best if (NH4)2SO4 is omitted
134371
3.1.26.4
2-mercaptoethanol
-
656122
3.1.26.4
2-mercaptoethanol
enzyme form H2 is inactive in absence of mercaptoethanol. No effect on enzyme form H1
134399
3.1.26.4
2-mercaptoethanol
stimulates
134397
3.1.26.4
dithiothreitol
optimal concentration is 1 mM
134077
3.1.26.4
DTT
-
656122
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