ArticleJournal of the American Society for Mass Spectrometry2012
Coordination sphere tuning of the electron transfer dissociation behavior of Cu(II)-peptide complexes.
Article in Journal of the American Society for Mass Spectrometry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Metal Ion Binding to the Amyloid β Monomer Studied by Native Top-Down FTICR Mass Spectrometry.Journal of the American Society for Mass Spectrometry · 2019Article
- Metal-dependent hormone function: the emerging interdisciplinary field of metalloendocrinology.Metallomics : integrated biometal science · 2019Review
- Electron transfer dissociation mass spectrometry of acidic phosphorylated peptides cationized with trivalent praseodymium.Journal of mass spectrometry : JMS · 2018Article
- Replacing HChemical science · 2018Article
- Effects of acidic peptide size and sequence on trivalent praseodymium adduction and electron transfer dissociation mass spectrometry.Journal of mass spectrometry : JMS · 2017Article
- The Effects of Trivalent Lanthanide Cationization on the Electron Transfer Dissociation of Acidic Fibrinopeptide B and its Analogs.Journal of the American Society for Mass Spectrometry · 2016Article
- Electron capture dissociation of trivalent metal ion-peptide complexes.Journal of the American Society for Mass Spectrometry · 2013Article
- Improved PET imaging of uPAR expression using new (64)Cu-labeled cross-bridged peptide ligands: comparative in vitro and in vivo studies.Theranostics · 2013Article
Corrections and comments
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Authors and funding
2 authors.
Funding
Abstract
In contrast to previous electron capture dissociation (ECD) studies, we find that electron transfer dissociation (ETD) of Cu(II)-peptide complexes can generate c- and z-type product ions when the peptide has a sufficient number of strongly coordinating residues. Double-resonance experiments, ion-molecule reactions, and collision-induced dissociation (CID) prove that the c and z product ions are formed via typical radical pathways without the associated reduction of Cu(II), despite the high second ionization energy of Cu. A positive correlation between the number of Cu(II) binding groups in the peptide sequence and the extent of c and z ion formation was also observed. This trend is rationalized by considering that the recombination energy of Cu(II) can be lowered by strong binding ligands to an extent that enables electron transfer to non-Cu sites (e.g., protonation sites) to compete with Cu(II) reduction, thereby generating c/z ions in a manner similar to that observed for protonated (i.e., nonmetalated) peptides.
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