Resonant neutral particle emission in collisions of electrons with protonated peptides with disulfide bonds at high energies

Research output: Contribution to journal › Research article › Contributed › peer-review

Contributors

  • Tetsumi Tanabe - , High Energy Accelerator Research Organization, Tsukuba, National Institutes for Quantum and Radiological Science and Technology (Author)
  • Koji Noda - , National Institutes for Quantum and Radiological Science and Technology (Author)
  • Satoshi Miyagi - , Toyohashi University of Technology (Author)
  • Noriyuki Kurita - , Toyohashi University of Technology (Author)
  • Shigenori Tanaka - , Kobe University (Author)
  • Julia Setzler - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • Wolfgang Wenzel - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • Evgeni B. Starikov - , TUD Dresden University of Technology, Pohang University of Science and Technology, Chalmers University of Technology (Author)
  • Gianaurelio Cuniberti - , Chair of Materials Science and Nanotechnology, Austrian Academy of Sciences, Pohang University of Science and Technology, Div IT Convergence Engn (Author)

Abstract

Electron-ion collisions were studied for various protonated peptide monocations with disulfide bonds, using an electrostatic storage-ring equipped with a merged-electron-beam device. Resonant neutral particle emissions at the energies of 6-7 eV were observed, as well as a rise towards zero-energy, which are typical electron-capture dissociation profiles. The presence of disulfide (S-S) bonds tends to enhance the resonant bump heights. Chemical nature of the amino-acid residues adjacent to cysteines appears to correlate with the bump strength. Molecular-dynamical simulations help clarify the role of molecular vibration modes in the electron-capture dissociation process. (C) 2011 Elsevier B. V. All rights reserved.

Details

Original languageEnglish
Pages (from-to)83-87
Number of pages5
JournalChemical Physics Letters
Volume504
Issue number1-3
Publication statusPublished - 28 Feb 2011
Peer-reviewedYes

External IDs

Scopus 79952009130
WOS 000287695300017

Keywords

Keywords

  • Electrostatic storage-ring, Hydrogen-atom adducts, Capture dissociation, Gas-phase, Ion/ion reactions, Polypeptide ions, Helical peptides, Model peptide, Amide bond, Attachment