Fernando Formaggio, Marco Crisma, Cristina Peggion, Alessandro Moretto, Mariano Venanzi and Claudio Toniolo Looking for a Robust, Synthetic, Fully-Extended (2.05-Helical) Peptide Structure – Effect of Terminal Groups European Journal of Organic Chemistry 2012
The fully-extended structure, albeit appealing for its potential applications, is the least investigated among polypeptide conformations. Here, we show that this 3D structure is stabilized by a C-terminal ester moiety. However, C-termination with a–CONHR (R = H, alkyl) group will convert it into the much more contracted 310 helix.
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