2.1.1.11	C111S	0.1% of wild-type activity	757980	
2.1.1.11	C111S/C115S	only residual in vitro activity under reducing conditions, almost complete loss of activity under non-reducing conditions	757980	
2.1.1.11	C115S	20% of wild-type activity, strong stimulation by dithiothreitol	757980	
2.1.1.11	C115S/C177S	only residual in vitro activity under reducing conditions, almost complete loss of activity under non-reducing conditions	757980	
2.1.1.11	C177S	residue is responsible for redox-dependent enzyme activation. In absence of dithiothreitol, increased activity compared with wild-type. Only slight activation by dithiothreitol	757980	
2.1.1.11	H139A	loss of more than 80% of methyltransferase activity, mutant has comparable Kd values for Mg-phosphate as the wild type protein	734272	
2.1.1.11	H139N	loss of more than 80% of methyltransferase activity, mutant has comparable Kd values for Mg-phosphate as the wild type protein	734272	
2.1.1.11	H139Q	loss of more than 80% of methyltransferase activity, mutant has comparable Kd values for Mg-phosphate as the wild type protein	734272	
2.1.1.11	L225F	mutation yellow-green leaf 18, leads to yellow-green leaves, decreased chlorophyll level, and climate-dependent growth differences	756823	
2.1.1.11	L271P	naturally occuring mutation, Mg-protoporphyrin IX accumulated in the mutant, a low activity of the mutant protein is not excluded	720712