2.7.1.169 K+ moderate stimulation, optimum at 10 mM 722549 2.7.1.169 Mg2+ required 722549, 762353 2.7.1.169 Ca2+ broadly accepts Ca2+, Fe2+, Co2+, Mn2+, Zn2+, or Ni2+ in place of Mg2+ 722842 2.7.1.169 Co2+ broadly accepts Ca2+, Fe2+, Co2+, Mn2+, Zn2+, or Ni2+ in place of Mg2+ 722842 2.7.1.169 Fe2+ broadly accepts Ca2+, Fe2+, Co2+, Mn2+, Zn2+, or Ni2+ in place of Mg2+ 722842 2.7.1.169 Mg2+ maximum activity in presence of Mg2+ 722842 2.7.1.169 Mn2+ broadly accepts Ca2+, Fe2+, Co2+, Mn2+, Zn2+, or Ni2+ in place of Mg2+ 722842 2.7.1.169 additional information not accepted: Cu2+ 722842 2.7.1.169 Ni2+ broadly accepts Ca2+, Fe2+, Co2+, Mn2+, Zn2+, or Ni2+ in place of Mg2+ 722842 2.7.1.169 Zn2+ broadly accepts Ca2+, Fe2+, Co2+, Mn2+, Zn2+, or Ni2+ in place of Mg2+ 722842