4.1.1.45 Cd2+ activates 665303 4.1.1.45 Cd2+ requires transition metal divalent cations for substrate activation 678136 4.1.1.45 Co2+ - 678137 4.1.1.45 Co2+ 1.0 mM, increases activity to 130% 679800 4.1.1.45 Co2+ activates 665303 4.1.1.45 Co2+ after purification, Co2+-reconstituted ACMSD exhibits the highest activity and the greatest stability 680375 4.1.1.45 Co2+ Co-substituted ACMSD shows a comparable activity to the native enzyme 691974 4.1.1.45 Co2+ requires transition metal divalent cations for substrate activation 678136 4.1.1.45 Fe2+ 0.1 mM, increases activity to 124% 679800 4.1.1.45 Fe2+ activates 665303 4.1.1.45 Fe2+ requires transition metal divalent cations for substrate activation 678136 4.1.1.45 MgCl2 slightly stimulates 4567 4.1.1.45 Mn2+ - 680375 4.1.1.45 Mn2+ activates 665303 4.1.1.45 Mn2+ requires transition metal divalent cations for substrate activation 678136 4.1.1.45 additional information Fe3+, Cu2+ not activating 665303 4.1.1.45 additional information not influenced by 1 mM Mg2+, Mn2+, Ni2+ or Ca2+ 679800 4.1.1.45 additional information the addition of one to ten equivalents of Co2+, Cu2+, Fe2+, or Zn2+ to purified ACMSD does not increase enzyme activity 749250 4.1.1.45 additional information the pure enzyme is 100% active in the absence of any metal ion 679800 4.1.1.45 Zn2+ - 703670 4.1.1.45 Zn2+ contains zinc 726993 4.1.1.45 Zn2+ essential cofactor 691974 4.1.1.45 Zn2+ native active site metal 678137 4.1.1.45 Zn2+ requires transition metal divalent cations for substrate activation 678136 4.1.1.45 Zn2+ the activity of ACMSD is proportional to the zinc content of the enzyme 749250