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  • Al-Khalili, A (author)

Dissociative recombination cross section and branching ratios of protonated dimethyl disulfide and N-methylacetamide

  • Article/chapterEnglish2004

Publisher, publication year, extent ...

  • AIP Publishing,2004
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:kth-40563
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-40563URI
  • https://doi.org/10.1063/1.1782772DOI
  • https://gup.ub.gu.se/publication/53701URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20110916
  • 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 and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Thomas, R (author)
  • Ehlerding, A (author)
  • Hellberg, F (author)
  • Geppert, W D (author)
  • Zhaunerchyk, Vitali (author)
  • af Ugglas, M (author)
  • Larsson, M (author)
  • Uggerud, E (author)
  • Vedde, J (author)
  • Adlhart, C (author)
  • Semaniak, J (author)
  • Kaminska, M (author)
  • Zubarev, R A (author)
  • Kjeldsen, F (author)
  • Andersson, Patrik U,1970Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry(Swepub:gu)xandpa (author)
  • Österdahl, FabianKTH,Fysik(Swepub:kth)u1er6waw (author)
  • Bednarska, V A (author)
  • Paal, A (author)
  • Göteborgs universitetInstitutionen för kemi (creator_code:org_t)

Related titles

  • In:Journal of Chemical Physics: AIP Publishing121:12, s. 5700-57080021-96061089-7690

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