2.1.1.117 2-mercaptoethanol 5 mM, 9% inhibition 63 2.1.1.117 Berberine 5 mM, 70% inhibition 1612 2.1.1.117 Ca2+ 1 mM, 64% inhibition 15 2.1.1.117 Ca2+ 5 mM, 7% inhibition 15 2.1.1.117 Co2+ 5 mM, 9% inhibition 23 2.1.1.117 Cu2+ 1 mM, 72% inhibition 19 2.1.1.117 Cu2+ 5 mM, 97% inhibition 19 2.1.1.117 Cu2+ 5 mM, 21% inhibition 19 2.1.1.117 Mn2+ 1 mM, 59% inhibition 11 2.1.1.117 additional information not inhibitory: Mg2+, Mn2+, Fe2+ 2