Polarized infrared spectroscopy of oriented purple membrane.

@article{Rothschild1979PolarizedIS,
  title={Polarized infrared spectroscopy of oriented purple membrane.},
  author={Kenneth J Rothschild and Noel A. Clark},
  journal={Biophysical journal},
  year={1979},
  volume={25 3},
  pages={473-87}
}
Polarized Fourier transform infrared spectroscopy has been used to study the structure of purple membrane from Halobacterium halobium. Membranes were oriented by drying a suspension of membrane fragments onto Irtran-4 slides. Dichroism measurements of the amide I, II and A peaks were used to find the average spatial orientation of the bacteriorhodopsin alpha-helices. By deriving a function that relates the observed dichroism to the orientational order parameters for the peptide groups, helical… CONTINUE READING
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