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

被引：0

作者：

Tanabe, Tetsumi ^{[1
,2
]}

Noda, Koji ^{[2
]}

Miyagi, Satoshi ^{[3
]}

Kurita, Noriyuki ^{[3
]}

Tanaka, Shigenori ^{[4
]}

Setzler, Julia ^{[5
]}

Wenzel, Wolfgang ^{[5
]}

Starikov, Evgeni B. ^{[6
,7
,8
]}

Cuniberti, Gianaurelio ^{[6
,7
]}

机构：

[1] High Energy Accelerator Org KEK, Accelerator Lab, Tsukuba, Ibaraki 3050801, Japan

[2] Natl Inst Radiol Sci, Dept Accelerator & Med Phys, Chiba 2638555, Japan

[3] Toyohashi Univ Technol, Dept Knowledge Based Informat Engn, Toyohashi, Aichi 4418580, Japan

[4] Kobe Univ, Grad Sch Syst Informat, Dept Computat Sci, Kobe, Hyogo 6578501, Japan

[5] Karlsruher Inst Technol, Inst Nanotechnol, D-76021 Karlsruhe, Germany

[6] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany

[7] POSTECH, Div IT Convergence Engn, Pohang, South Korea

[8] Chalmers Univ Technol, Dept Phys Chem, SE-41296 Gothenburg, Sweden

来源：

CHEMICAL PHYSICS LETTERS | 2011年 / 504卷 / 1-3期

关键词：

HYDROGEN-ATOM ADDUCTS; ELECTROSTATIC STORAGE-RING; CAPTURE DISSOCIATION; ION/ION REACTIONS; AMIDE BOND; ATTACHMENT; RADICALS; PROTEIN; IONS; GENERATION;

D O I：

10.1016/j.cplett.2011.01.058

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：83 / 87

页数：5

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