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β- and γ-Amino Acids at α-Helical Interfaces: Toward the Formation of Highly Stable Foldameric Coiled Coils

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons21325

Baldauf,  Carsten
Theory, Fritz Haber Institute, Max Planck Society;

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Zitation

Nyakatura, E. K., Mortier, J., Radtke, V. S., Wieczorek, S., Araghi, R. R., Baldauf, C., et al. (2014). β- and γ-Amino Acids at α-Helical Interfaces: Toward the Formation of Highly Stable Foldameric Coiled Coils. ACS Medicinal Chemistry Letters, 5(12), 1300-1303. doi:10.1021/ml500361c.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0024-9109-8
Zusammenfassung
Since peptides are vital for cellular and pathogenic processes, much effort has been put into the design of unnatural oligomers that mimic natural peptide structures, also referred to as foldamers. However, to enable the specific application of foldamers, a thorough characterization of their interaction profiles in native protein environments is required. We report here the application of phage display for the identification of suitable helical environments for a sequence comprising an alternating set of β- and γ-amino acids. In vitro selected sequences show that an increase in the hydrophobic surface area at the helical interface as well as the incorporation of a polar H-bond donor functionality can significantly improve interhelical interactions involving backbone-extended amino acids. Thus, our data provide insight into the principles of the rational design of foldameric inhibitors for protein–protein interactions.