2.5.1.108 C106A the mutant shows wild type activity 759511 2.5.1.108 C128A the mutant shows reduced activity compared to the wild type enzyme 759511 2.5.1.108 C163A difference in the EPR spectrum of the reduced form, pronounced rhombic main features with greatly increased g-value anisotropy, mutant enzyme is able to transfer the the 3-amino-3-carboxypropyl group onto His600 723158 2.5.1.108 C163A mutant enzyme has lower activity than wild-type enzyme and can bind a [4Fe-4S] cluster 723158 2.5.1.108 C259A/C287A homodimeric mutant enzyme not stable. It is inactive and cannot bind a [4Fe-4S] cluster. Heterodimeric enzyme with a wild-type subunit and a mutant subunit is active 723158 2.5.1.108 C287A difference in the EPR spectrum, g-tensors are more axial than wild type, mutant enzyme is able to transfer the the 3-amino-3-carboxypropyl group onto His600 723158 2.5.1.108 C287A mutant enzyme has lower activity than wild-type enzyme and can bind a [4Fe-4S] cluster 723158 2.5.1.108 C304A the mutant shows wild type activity 759511 2.5.1.108 C362A the mutant shows reduced activity compared to the wild type enzyme 759511 2.5.1.108 C59A difference in the EPR spectrum, g-tensors are more axial than wild type, mutant enzyme is able to transfer the the 3-amino-3-carboxypropyl group onto His600 723158 2.5.1.108 C59A mutant enzyme has lower activity than wild-type enzyme and can bind a [4Fe-4S] cluster 723158 2.5.1.108 C59A/C287A inactive mutant lacks the Fe-S cluster. A heterodimer of wild-type subunit and C59A/C287A mutant subunit is stable and active 723158