the metal ion-formate distance approximately 5 a in the mn ( ii ) adp-formate-creatine-enzyme complex and less than 5 a in the co ( ii ) adp-formate-creatine-enzyme complex is consistent with the suggestion that the monovalent anion is binding at the site normally occupied by the transferable phosphoryl group , thus producing a complex which mimics the transition state .
C0022023
ion
C0003075
anion