The principal structural features of multinuclear complexes of cadmium(II) with the plant-peptide phytochelatin have been deduced from Cd-EXAFS (EXAFS = extended X-ray absorption fine structure) data: (i) Cd(SCys)4 coordination, (ii) in contrast to Cd-metallothioneins, no formation of cadmium ‘clusters’ and (iii) non-coordinating carboxylate groups.
H. Strasdeit, A. Duhme, R. Kneer, M. H. Zenk, C. Hermes and H. Nolting, J. Chem. Soc., Chem. Commun., 1991, 1129 DOI: 10.1039/C39910001129
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