O-17 Nmr and Ft-Ir Study of the Ionization State of Peptides in Aprotic-Solvents - Application to Leu-Enkephalin
(EN)
Gerothanassis, I. P.
(EN)
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας
(EL)
Gerothanassis, I. P.
(EN)
The ionization state of Leu-enkephalin in DMSO and MeCN/DMSO (4/1) solution was studied by the combined use of O-17 NMR and FT-IR spectroscopy. After lyophilization of an aqueous solution at nearly neutral pH. Leu-enkephalin essentially exists in the uncharged state in MeCN/DMSO (4/1) solution. In pure DMSO, only 40% of the Leu-enkephalin molecules are in the zwitterionic state under the same conditions.
(EN)
