Helix propensities are identical in proteins and peptides.

@article{Myers1997HelixPA,
  title={Helix propensities are identical in proteins and peptides.},
  author={Jeffrey K. Myers and C. Nick Pace and J. Martin Scholtz},
  journal={Biochemistry},
  year={1997},
  volume={36 36},
  pages={10923-9}
}
Our understanding of the factors stabilizing alpha-helical structure has been greatly enhanced by the study of model alpha-helical peptides. However, the relationship of these results to the folding of helices in intact proteins is not well characterized. Helix propensities measured in model peptides are not in good agreement with those from proteins. In order to address these questions, we have measured helix propensities in the alpha-helix of ribonuclease T1 and a helical peptide of identical… CONTINUE READING

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