Structural insights reveal a recognition feature for tailoring hydrocarbon stapled-peptides against the eukaryotic translation initiation factor 4E protein.
Stapled-peptides have emerged as an exciting class of molecules which can modulate protein-protein interactions. We have used a structure-guided approach to rationally develop a set of hydrocarbon stapled-peptides with high binding affinities and res ...
Stapled-peptides have emerged as an exciting class of molecules which can modulate protein-protein interactions. We have used a structure-guided approach to rationally develop a set of hydrocarbon stapled-peptides with high binding affinities and residence times against the oncogenic eukaryotic translation initiation factor 4E (eIF4E) protein. Crystal structures of these peptides in complex with eIF4E show that they form specific interactions with a region on the protein-binding interface of eIF4E which is distinct from the other well-established canonical interactions. This recognition element is a major molecular determinant underlying the improved binding kinetics of these peptides with eIF4E. The interactions were further exploited by designing features in the peptides to attenuate disorder and increase helicity which collectively resulted in the generation of a distinct class of hydrocarbon stapled-peptides targeting eIF4E. This study details new insights into the molecular basis of stapled-peptide: eIF4E interactions and their exploitation to enhance promising lead molecules for the development of stapled-peptide compounds for oncology.
Organizational Affiliation:
p53 Laboratory , ASTAR (Agency for Science, Technology and Research) , 8A Biomedical Grove, #06-04/05, Neuros/Immunos , Singapore 138648 . Email: cjbrown@p53lab.a-star.edu.sg ; Tel: +65 6478 8273.,Ipsen Innovation , 5, Avenue du Canada , Les Ulis , France 91940 . Email: sergeauvin@gmail.com ; Tel: +33 160 922481.,Ipsen Bioscience , 650 East Kendall Street , Cambridge , MA 02142 , USA.,Department of Biological Sciences , National University of Singapore , 14 Science Drive 4 , Singapore 117543.,Bioinformatics Institute , ASTAR (Agency for Science, Technology and Research) , 30 Biopolis Street, #07-01 Matrix , Singapore 138671 . Email: chandra@bii.a-star.edu.sg ; Tel: +65 6478 8273.,School of Biological Sciences , Nanyang Technological University , 50 Nanyang Drive , Singapore 637551.
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