... [10]. Asecond strategy is based on the association of antibodieswith cofactors such a s inorganic cofactors [11,12], naturalcofactors [13], metal ions [14±17], or metal cofactors [18±40].In particular, ... undertakenstudies of the coordination chemistry of the iron(III) of Fe(ToCPP) bound or not to antibody 13G10 with twoobjectives: ®rst, to get more precise information about thetopology of the binding site of ... presence of a,a-anda,b-1,2-Fe(DoC-PP))13G10 complexes, the rate of oxidation of ABTS byH2O2increased sharply in the presence of increasingamounts of imidazole, from an initial value of 0.37...