Abstract
The amide I vibrational dynamics of a 27 residue peptide in lipid vesicles that encompasses the transmembrane domain of the T-cell receptor CD3 ζ was studied using a heterodyned two-dimensional (2D IR) infrered spectroscopy. The amide I mode of the 49-Leucine residue was spectroscopically isolated using 1- 13C= 18O isotope labeling. The homogeneous and inhomogeneous linewidths of this mode was measured by fitting the 2D IR spectrum collected with a photon echo pulse sequence. The population relaxation time of the amide I band was also measured with a transient grating, which was found to contribute 9 cm -1 to the linewidth.
© 2004 American Institute of Physics
© 2004 American Institute of Physics
| Original language | English |
|---|---|
| Pages (from-to) | 10215-10224 |
| Journal | Journal of Chemical Physics |
| Volume | 120 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 1 Jun 2004 |
| Externally published | Yes |
Bibliographical note
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