ESR spectra reflect local and global mobility in a short spin-labeled peptide throughout the alpha-helix----coil transition.

Abstract

A series of short alanine-based synthetic peptides (16 or 17 residues) have previously been shown to exhibit an anomalously high degree of alpha-helicity [Marqusee, S., et al. (1989) Proc. Natl. Acad. Sci. U.S.A. 86, 5286-5290; Marqusee, S., & Baldwin, R.L. (1987) Proc. Natl. Acad. Sci. U.S.A. 84, 8898-8902]. These peptides are ideal models for extracting… (More)

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