4.1.1.112 Mg2+ - 756006 4.1.1.112 Mn2+ - 4273, 4276 4.1.1.112 Cd2+ activates 4273 4.1.1.112 Co2+ activates 4272, 4273 4.1.1.112 Mg2+ activates 4272, 664936 4.1.1.112 Mn2+ activates 4272 4.1.1.112 Ni2+ activates 4272, 664936 4.1.1.112 Zn2+ active site metal ion, 2 mol Zn2+ per mol enzyme 681424 4.1.1.112 Zn2+ binds to the gamma subunit 650185, 651122 4.1.1.112 Zn2+ bound at the gamma-subunit, coordinated by several residues at the hydrophilic C-terminus 726821