Circular dichroism of beta turns in peptides and proteins.

@article{Bush1978CircularDO,
  title={Circular dichroism of beta turns in peptides and proteins.},
  author={C. A. Bush and Sisir Kumar Sarkar and Kenneth D Kopple},
  journal={Biochemistry},
  year={1978},
  volume={17 23},
  pages={4951-4}
}
Circular dichroism (CD) spectra are reported for two groups of cyclic hexapeptides having beta turns whose geometry can be firmly established by X-ray crystallography and by NMR spectroscopy. One series contains the sequence L-Pro-D-Phe in the geometry of the classical type II beta turn, while the second group has the sequence D-Phe-L-Pro in the closely related geometry of the gramicidin S turn. CD data on the hydrogenated peptides show that in neither series do Cotton effects due to the… CONTINUE READING

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