5.6.1.7 Ca2+ is found to protect against proteolysis of a form of GroEL, ox-GroEL, prepared by exposing GroEL to hydroxide peroxide, induces a conformational change 684903 5.6.1.7 Ca2+ the enzyme is less active, when Ca2+, Cu2+, Co2+, and Ni2+ are used ar the same concentration instead of Mn2+ 668673 5.6.1.7 Co2+ 2 mM, 41% of activity with Mg2+ 654945 5.6.1.7 Co2+ divalent cation required for ATP hydrolysis, mediate nucleoside triphosphate-dependent refolding of malate dehydrogenase 698649 5.6.1.7 Co2+ Pf Cpn shows increased ATPase activity in the presence of either Co2+ or Mn2+ 711001 5.6.1.7 Co2+ relatively low ATPase activity in presence of Co2+ or Mn2+ 711541 5.6.1.7 Co2+ Ta-cpn beta1 shows ATPase activity in the presence of Co2+. A weak ATPase activity is observed in the presence of Mn2+ or Mg2+ 711214 5.6.1.7 Co2+ Ta-cpn R1 hydrolyzes ATP in the presence of Co2+, Mn2+, or Mg2+. ATPase activity of the monomeric enzyme is the highest in the presence of Co2+ 711214 5.6.1.7 Co2+ the enzyme is less active, when Ca2+, Cu2+, Co2+, and Ni2+ are used ar the same concentration instead of Mn2+ 668673 5.6.1.7 Cs+ 1 mM, 81% of K+ activation 289233