Cited by 537Alzheimer's disease research and treatmentsMetal complexes synthesis and propertiesTrace Elements in Health

Bioinorganic chemistry of copper and zinc ions coordinated to amyloid-β peptide

Faller, Peter, Hureau, Christelle·2009·Dalton Trans.

Abstract

In the present perspective, we give a critical review on the coordination chemistry of the metal ions copper and zinc to the amyloid-beta (Abeta) peptide; such complexes have been linked to Alzheimer's disease. We focus on two main issues: the identification of the coordination sphere of the Cu(ii) and Zn(ii) ions and the affinity of these metal ions towards the peptide. With the aim to come up with as few as possible valuable structural models and binding affinity values, we critically review the divergent propositions reported in the literature and take into account the experimental differences and the limits of the methods used in the published studies. We propose that: (i) the conditional dissociation constant of the Cu(Abeta) complexes lies in the range of 10 pM to 100 nM, with a preference for the region between 100 pM to 1 nM. (ii) Two most likely coordination modes for the predominant form of the Cu(Abeta) complexes at physiological pH can be retained, both being 3N1O distorted square planar. In the first model, the Cu(ii) ion is coordinated by the Ntau atoms of the three His residues and the carboxylate of the Asp1. In the second model, both the N-terminus and the carboxylate functions of Asp1 are ligated together with the Ntau of His6 and of His13 (or His14). An equilibrium between these two forms at room temperature, and a preferentially freezing out of the second one would explain most of the divergences in the published results (in particular, between those obtai…

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Crossref · 10.1039/b813398k

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Authors
Faller, P., & Hureau, C.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
Faller, Peter
Venue
Dalton Trans.
Published
2009
Issue
7
Pages
1080-1094
ISSN
  • 1477-9226 (ISSN-L)
  • 1477-9234
OpenAlex
W2062820102
Cited by
530
References
134
Citations by year
2026: 12 · 2025: 19 · 2024: 17 · 2023: 20 · 2022: 14 · 2021: 25 · 2020: 23 · 2019: 29 · 2018: 34 · 2017: 37 · 2016: 25 · 2015: 28 · 2014: 36 · 2013: 40 · 2012: 58
FWCI
4.03
Type
journal article
Language
en
Open access
closed
Locations
  • Dalton Transactions (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Oncology › Metal complexes synthesis and properties
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
Keywords
amyloid-beta, copper(II) complexes, zinc(II) complexes, metal-peptide coordination, Alzheimer's disease, coordination sphere, dissociation constant, binding affinity, square-planar coordination, histidine ligands, structural model
MeSH terms
Alzheimer Disease, Copper, Humans, Peptide Fragments, Zinc, Chemistry, Bioinorganic, Amyloid beta-Peptides

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