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Site-specific vibrational dynamics of the CD3ζ membrane peptide using heterodyned two-dimensional infrared photon echo spectroscopy

  • Prabuddha Mukherjee
  • , Amber T. Krummel
  • , Eric C. Fulmer
  • , Itamar Kass
  • , Isaiah T. Arkin
  • , Martin T. Zanni

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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
Original languageEnglish
Pages (from-to)10215-10224
JournalJournal of Chemical Physics
Volume120
Issue number21
DOIs
Publication statusPublished - 1 Jun 2004
Externally publishedYes

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