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Pregled bibliografske jedinice broj: 204679

Gas Phase H/D Exchange of Sodiated Amino Acids: Why Do We See Zwitterions?


Rožman, Marko; Bertoša, Branimir; Klasinc, Leo; Srzić, Dunja
Gas Phase H/D Exchange of Sodiated Amino Acids: Why Do We See Zwitterions? // Journal of the American Society for Mass Spectrometry, 17 (2006), 1; 29-36 doi:10.1016/j.jasms.2005.08.017 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 204679 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Gas Phase H/D Exchange of Sodiated Amino Acids: Why Do We See Zwitterions?

Autori
Rožman, Marko ; Bertoša, Branimir ; Klasinc, Leo ; Srzić, Dunja

Izvornik
Journal of the American Society for Mass Spectrometry (1044-0305) 17 (2006), 1; 29-36

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
H/D exchange ; sodiated amino acids ; reaction mechanism

Sažetak
The gas-phase interaction of sodiated amino acids and sodiated amino acid methyl esters with various deuterium donors is investigated by combining results of H/D exchange reactions with those from density functional theory and molecular dynamics calculations. Discrepancy between experimentally and theoretically obtained structures for sodium cationized amino acids is explained by deuterium donor caused perturbation of the most stable amino acid conformation. Detailed study of H/D exchange mechanism on sodiated amino acids shows that the H/D exchange reaction is preceded by a multistep quasi-isoenergetic transition (perturbation) from a charge solvated to zwitterionic structure in the amino acid. Although the computation refers to the system AlaNa+ and D2O, these mechanisms apply to all amino acids, except those where a functional side-chain group takes part in the perturbation process. The suggested perturbation mechanism applies also for other deuterium donors such as CD3OD or even ND3 and indicates that a single water molecule suffices to convert the sodiated amino acid from charge solvated to zwitterionic form.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekti:
0098032

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Dunja Srzić (autor)

Avatar Url Leo Klasinc (autor)

Avatar Url Branimir Bertoša (autor)

Avatar Url Marko Rožman (autor)

Citiraj ovu publikaciju

Rožman, Marko; Bertoša, Branimir; Klasinc, Leo; Srzić, Dunja
Gas Phase H/D Exchange of Sodiated Amino Acids: Why Do We See Zwitterions? // Journal of the American Society for Mass Spectrometry, 17 (2006), 1; 29-36 doi:10.1016/j.jasms.2005.08.017 (međunarodna recenzija, članak, znanstveni)
Rožman, M., Bertoša, B., Klasinc, L. & Srzić, D. (2006) Gas Phase H/D Exchange of Sodiated Amino Acids: Why Do We See Zwitterions?. Journal of the American Society for Mass Spectrometry, 17 (1), 29-36 doi:10.1016/j.jasms.2005.08.017.
@article{article, year = {2006}, pages = {29-36}, DOI = {10.1016/j.jasms.2005.08.017}, keywords = {H/D exchange, sodiated amino acids, reaction mechanism}, journal = {Journal of the American Society for Mass Spectrometry}, doi = {10.1016/j.jasms.2005.08.017}, volume = {17}, number = {1}, issn = {1044-0305}, title = {Gas Phase H/D Exchange of Sodiated Amino Acids: Why Do We See Zwitterions?}, keyword = {H/D exchange, sodiated amino acids, reaction mechanism} }
@article{article, year = {2006}, pages = {29-36}, DOI = {10.1016/j.jasms.2005.08.017}, keywords = {H/D exchange, sodiated amino acids, reaction mechanism}, journal = {Journal of the American Society for Mass Spectrometry}, doi = {10.1016/j.jasms.2005.08.017}, volume = {17}, number = {1}, issn = {1044-0305}, title = {Gas Phase H/D Exchange of Sodiated Amino Acids: Why Do We See Zwitterions?}, keyword = {H/D exchange, sodiated amino acids, reaction mechanism} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


Uključenost u ostale bibliografske baze podataka:


  • Chemical Abstracts


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