Abstract:The classic analysis of metal transfer between ligands suggests that the metal-binding ligand (M-L1) and the uncomplexed ligand (L2) form a mixed complex (L2-M-L1), and that transfer is effected with the dissociation of this complex to L2-M and L1. Spectroscopic data suggested that such mixed complexes formed when pyrophosphate-Fe and acetohydroxamate-Fe were added to apotransferrin: the initial species had a different absorbance maximum than the final transferrin-iron complex. We now show that similar spectro… Show more
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