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Publication Abstract from PubMed

Efficient optimization of a peptide lead into a drug candidate frequently needs further transformation to augment properties such as bioavailability. Among the different options, foldamers, which are sequence-based oligomers with precise folded conformation, have emerged as a promising technology. We introduce oligourea foldamers to reduce the peptide character of inhibitors of protein-protein interactions (PPI). However, the precise design of such mimics is currently limited by the lack of structural information on how these foldamers adapt to protein surfaces. We report a collection of X-ray structures of peptide-oligourea hybrids in complex with ubiquitin ligase MDM2 and vitamin D receptor and show how such hybrid oligomers can be designed to bind with high affinity to protein targets. This work should enable the generation of more effective foldamer-based disruptors of PPIs in the context of peptide lead optimization.

Structural Basis for alpha-Helix Mimicry and Inhibition of Protein-Protein Interactions with Oligourea Foldamers.,Cussol L, Mauran-Ambrosino L, Buratto J, Belorusova AY, Neuville M, Osz J, Fribourg S, Fremaux J, Dolain C, Goudreau SR, Rochel N, Guichard G Angew Chem Int Ed Engl. 2020 Sep 16. doi: 10.1002/anie.202008992. PMID:32935897^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.