Fragment-Based Stabilizers of Protein-Protein Interactions through Imine-Based Tethering

Madita Wolter, Dario Valenti, Peter J Cossar, Laura M Levy, Stanimira Hristeva, Thorsten Genski, Torsten Hoffmann, Luc Brunsveld, Dimitrios Tzalis (Corresponding author), Christian Ottmann (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

Samenvatting

Small-molecule stabilization of protein-protein interactions (PPIs) is a promising concept in drug discovery, however the question how to identify or design chemical starting points in a "bottom-up" approach is largely unanswered. We report a novel concept for identifying initial chemical matter for PPI stabilization based on imine-forming fragments. The imine bond offers a covalent anchor for site-directed fragment targeting, whereas its transient nature enables efficient analysis of structure-activity relationships. This bond enables fragment identification and optimisation using protein crystallography. We report novel fragments that bind specifically to a lysine at the PPI interface of the p65-subunit-derived peptide of NF-κB with the adapter protein 14-3-3. Those fragments that subsequently establish contacts with the p65-derived peptide, rather than with 14-3-3, efficiently stabilize the 14-3-3/p65 complex and offer novel starting points for molecular glues.

Originele taal-2Engels
Pagina's (van-tot)21520-21524
Aantal pagina's5
TijdschriftAngewandte Chemie - International Edition
Volume59
Nummer van het tijdschrift48
Vroegere onlinedatum20 aug 2020
DOI's
StatusGepubliceerd - 23 nov 2020

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