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Gas Phase Structure of Sodiated Amino Acids Probed by H/D Exchange Reactions
Marko Rožman
| Puni tekst: engleski, pdf (86 KB) | str. 185-188 | citiraj | |
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APA 6th Edition Rožman, M. (2005). Gas Phase Structure of Sodiated Amino Acids Probed by H/D Exchange Reactions. Croatica Chemica Acta, 78 (2), 185-188. Preuzeto s https://hrcak.srce.hr/10 MLA 8th Edition Rožman, Marko. "Gas Phase Structure of Sodiated Amino Acids Probed by H/D Exchange Reactions." Croatica Chemica Acta, vol. 78, br. 2, 2005, str. 185-188. https://hrcak.srce.hr/10. Citirano 15.12.2019. Chicago 17th Edition Rožman, Marko. "Gas Phase Structure of Sodiated Amino Acids Probed by H/D Exchange Reactions." Croatica Chemica Acta 78, br. 2 (2005): 185-188. https://hrcak.srce.hr/10 Harvard Rožman, M. (2005). 'Gas Phase Structure of Sodiated Amino Acids Probed by H/D Exchange Reactions', Croatica Chemica Acta, 78(2), str. 185-188. Preuzeto s: https://hrcak.srce.hr/10 (Datum pristupa: 15.12.2019.) Vancouver Rožman M. Gas Phase Structure of Sodiated Amino Acids Probed by H/D Exchange Reactions. Croatica Chemica Acta [Internet]. 2005 [pristupljeno 15.12.2019.];78(2):185-188. Dostupno na: https://hrcak.srce.hr/10 IEEE M. Rožman, "Gas Phase Structure of Sodiated Amino Acids Probed by H/D Exchange Reactions", Croatica Chemica Acta, vol.78, br. 2, str. 185-188, 2005. [Online]. Dostupno na: https://hrcak.srce.hr/10. [Citirano: 15.12.2019.] |
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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.
Hrčak ID: 10
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