5.1.3.33 Co2+ can effectively rescue the activity of H99G mutant enzyme from which the metal ion has been removed with 1,10-phenanthroline 729590 5.1.3.33 additional information each monomer contains two beta,alpha,beta,beta,beta scaffolds that form a metal binding site with two histidine and two glutamic acid residues 729590 5.1.3.33 Ni2+ can effectively rescue the activity of H99G mutant enzyme from which the metal ion has been removed with 1,10-phenanthroline 729590