Download MendeleyCrystallographic fragment screening of CDK2-cyclin A: FragLites map sites of protein-protein interaction.
Hope, I., Martin, M.P., Jiang, Z., Waring, M.J., Noble, M.E.M., Endicott, J.A., Tatum, N.J.(2025) Structure
- PubMed: 40816275
- DOI: https://doi.org/10.1016/j.str.2025.07.016
- Primary Citation of Related Structures:
9ESJ, 9ESK, 9ESL, 9ESN, 9ESO, 9ESP, 9ESQ, 9ESR, 9ESS, 9ESU, 9ESV, 9ESW, 9ESX, 9ESY, 9ESZ, 9ET0, 9ET1, 9ET2, 9ET3, 9ET4, 9ET5, 9ET6, 9ET7, 9ET8, 9ET9, 9ETA, 9ETB, 9ETP - PubMed Abstract:
Sites of protein-protein interaction (PPI) are potentially more selective binding sites for therapeutics than protein substrate-binding sites. PPIs include distinct regions frequently called "hotspots," sites of key amino acid interactions. Prospective identification of these hotspots through X-ray crystallographic screening could assist in the identification of separation of function mutants for experimental validation, enhance confidence in AI-generated multiprotein complex predictions, and accelerate development of selective chemical probes. To explore these applications, we utilize the FragLite library to examine the binding surfaces of CDK2-cyclin A. The many protein- and peptide-CDK2-cyclin A complexes that have been structurally characterized make this complex an appropriate test case. We show that FragLites comprehensively map both known sites of protein-protein interaction on CDK2-cyclin A and identify a possible uncharacterized site, providing a structural method toward directing mechanistic studies and starting points for chemical probe design.
- Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Paul O'Gorman Building, Newcastle upon Tyne NE2 4HH, UK.
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