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Pregled bibliografske jedinice broj: 204683

Gas phase structure of the sodiated amino acids probed by H/D exchange reactions


Rožman, Marko
Gas phase structure of the sodiated amino acids probed by H/D exchange reactions // Croatica chemica acta, 78 (2005), 2; 185-188 (međunarodna recenzija, članak, znanstveni)


Naslov
Gas phase structure of the sodiated amino acids probed by H/D exchange reactions

Autori
Rožman, Marko

Izvornik
Croatica chemica acta (0011-1643) 78 (2005), 2; 185-188

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

Ključne riječi
Gas phase structure ; sodium cationized amino acids ; sodium cationized amino acid esters ; mass spectrometry ; density functional theory ; zwitterionic structure

Sažetak
Taking into account the difference in structure of a sodiated gas phase amino acid in its zwitterionic and charge solvated forms, gas phase structures of sodiated histidine, lysine, phenylalanine, proline, tryptophan and tyrosine were probed by H/D exchange reactions. Experiment results obtained from the site-specific reaction rate constants indicated the zwitterionic structure for all the sodiated amino acids studied. In contrast, B3LYP calculations for sodiated lysine, along with the already presented theoretical results for other amino acids studied, show the charge solvated form to be stable, except for proline which is in the zwitterionic form. Absence of H/D exchange in sodiated methyl esters of phenylalanine and histidine, along with the discrepancy between experimental and theoretical data for the amino acids studied, indicates that H/D exchange occurs only when sodiated amino acids are in the zwitterionic form.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
0098032

Ustanove
Institut "Ruđer Bošković", Zagreb

Autor s matičnim brojem:
Marko Rožman, (237562)

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


Uključenost u ostale bibliografske baze podataka:


  • Chemical Abstracts