1.11.1.11 Ba2+ activates the activity of APX from kiwano at 1-10 mM 764715 1.11.1.11 Ca2+ exogenous calcium enhances rice tolerance to acid rain stress by regulating isozymes composition and transcriptional expression of ascorbate peroxidase 765632 1.11.1.11 Fe - 439868 1.11.1.11 Fe hemoprotein 439855, 439856, 439858, 439860 1.11.1.11 Fe2+ in the heme group 763910, 764255, 764383, 764388, 764787, 764826, 764871, 765160, 765196, 765273, 765501, 765572, 765596, 765620, 765632, 765656, 765773 1.11.1.11 Fe2+ in the heme group, activates the activity of APX from kiwano at 1-10 mM 764715 1.11.1.11 Iron predominantly five-coordinate high-spin iron 655435 1.11.1.11 Ni2+ below 0.01 mM, activation, inhibition above 657113