4.1.1.112 Cd2+ activates 4273 4.1.1.112 Co2+ activates 4272, 4273 4.1.1.112 Mg2+ - 756006 4.1.1.112 Mg2+ activates 4272, 664936 4.1.1.112 Mg2+ cofactor 678331 4.1.1.112 Mg2+ inhibitory above 1 mM 653877 4.1.1.112 Mg2+ Km: 1.2 mM, can be substituted by Mn2+ 4269 4.1.1.112 Mg2+ only cytoplasmic enzyme 4271 4.1.1.112 Mg2+ or Mn2+, absolutely required, Km-value 0.08 mM 654328 4.1.1.112 Mg2+ required, decarboxylation Km: 0.17 mM, carboxylation Km: 1.85 mM 4263