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Dissociative recomb...
Dissociative recombination cross section and branching ratios of protonated dimethyl disulfide and N-methylacetamide
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Al-Khalili, A (author)
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Thomas, R (author)
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Ehlerding, A (author)
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Hellberg, F (author)
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Geppert, W D (author)
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Zhaunerchyk, Vitali (author)
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af Ugglas, M (author)
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Larsson, M (author)
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Uggerud, E (author)
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Vedde, J (author)
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Adlhart, C (author)
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Semaniak, J (author)
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Kaminska, M (author)
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Zubarev, R A (author)
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Kjeldsen, F (author)
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- Andersson, Patrik U, 1970 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry
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- Österdahl, Fabian (author)
- KTH,Fysik
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Bednarska, V A (author)
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Paal, A (author)
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(creator_code:org_t)
- AIP Publishing, 2004
- 2004
- English.
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In: Journal of Chemical Physics. - : AIP Publishing. - 0021-9606 .- 1089-7690. ; 121:12, s. 5700-5708
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Dimethyl disulfide (DMDS) and N-methylacetamide are two first choice model systems that represent the disulfide bridge bonding and the peptide bonding in proteins. These molecules are therefore suitable for investigation of the mechanisms involved when proteins fragment under electron capture dissociation (ECD). The dissociative recombination cross sections for both protonated DMDS and protonated N-methylacetamide were determined at electron energies ranging from 0.001 to 0.3 eV. Also, the branching ratios at 0 eV center-of-mass collision energy were determined. The present results give support for the indirect mechanism of ECD, where free hydrogen atoms produced in the initial fragmentation step induce further decomposition. We suggest that both indirect and direct dissociations play a role in ECD.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Keyword
- Chemical bonds
- Degrees of freedom (mechanics)
- Dissociation
- Hydrogen
- Mathematical models
- Molecular dynamics
- Nitrogen compounds
- Reaction kinetics
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Al-Khalili, A
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Thomas, R
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Ehlerding, A
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Hellberg, F
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Geppert, W D
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Zhaunerchyk, Vit ...
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show more...
-
af Ugglas, M
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Larsson, M
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Uggerud, E
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Vedde, J
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Adlhart, C
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Semaniak, J
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Kaminska, M
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Zubarev, R A
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Kjeldsen, F
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Andersson, Patri ...
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Österdahl, Fabia ...
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Bednarska, V A
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Paal, A
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
- Articles in the publication
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Journal of Chemi ...
- By the university
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Royal Institute of Technology
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University of Gothenburg