... (Fig. 3A). Three of the ligands,OD2 of Asp165, NE2 of His79 and NE2 of His169,formed an equatorial plane. The other protein ligand,NE2 of His31, bound to the metal, in the company of a water oxygen, ... Suzuki5and Yasushi Kawata3,41 National Institute of Advanced Industrial Science and Technology, Ikeda, Osaka, Japan2 Department of Food Science and Nutrition, Faculty of Human Life and Science, ... coordi-nated with six ligands: the five same ligands in theMn-reconstituted enzyme and an additional water oxy-gen, which, together with the OD2 of Asp165, theNE2 of His79 and the NE2 of His169,...