6.2.1.26 Ca2+ 0.5 mM, 1 mM or 5 mM, approximately twofold higher activity than the control 648945 6.2.1.26 Ca2+ 8% of the activation with Mg2+ 648943 6.2.1.26 Co2+ 63% of the activation with Mg2+ 648943 6.2.1.26 Co2+ at 0.5 mM or 1.0 mM, 4fold increase in activity, 2fold increase in activity at 5 mM 648945 6.2.1.26 Cu2+ 7% of the activation with Mg2+ 648943 6.2.1.26 K+ 0.5 mM, 1 mM or 5 mM, approximately twofold higher activity than the control 648945 6.2.1.26 Mg2+ - 690915, 694676 6.2.1.26 Mg2+ activation 648943 6.2.1.26 Mg2+ maximal activation at 1 mM Mg2+, 6fold 648945 6.2.1.26 Mg2+ required 745330 6.2.1.26 Mn2+ 36% of the activation with Mg2+ 648943 6.2.1.26 Mn2+ at 0.5 mM or 1.0 mM, 4fold increase in activity, 2fold increase in activity at 5 mM 648945 6.2.1.26 Na+ 0.5 mM, 1 mM or 5 mM, approximately twofold higher activity than the control 648945 6.2.1.26 Ni2+ 46% of the activation with Mg2+ 648943 6.2.1.26 Zn2+ 0.5 mM, 1 mM or 5 mM, approximately twofold higher activity than the control 648945