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- Tanabe, T., et al.
(författare)
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Resonant neutral particle emission in collisions of electrons with protonated peptides with disulfide bonds at high energies
- 2011
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Ingår i: Chemical Physics Letters. - : Elsevier BV. - 0009-2614. ; 504:1-3, s. 83-87
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Tidskriftsartikel (refereegranskat)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.
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