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Between a rock and a hard place?

Developing small-molecule inhibitors against protein-protein interaction targets is among the most difficult challenges in contemporary drug discovery. Recent developments in our understanding of this problem, and in the knowledge and tools available to address it, give cause for renewed hope, but substantial challenges remain.

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Figure 1: Examples of small-molecule inhibitors of PPI targets.
Figure 2: Balancing chemical and biological risk.
Figure 3: Why it can be difficult to identify small molecules that bind with high affinity to PPI targets.
Figure 4: Energetic hotspots and adaptivity.
Figure 5: Lead-optimization funnel.
Figure 6: Unusual inhibition mechanism of a small-molecule antagonist of the trimeric cytokine TNFα (ref. 19).
Figure 7

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Acknowledgements

We thank R. McDowell and M. He for providing Figures 4 and 6, respectively, and J. Huth for critically reading the manuscript.

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Whitty, A., Kumaravel, G. Between a rock and a hard place?. Nat Chem Biol 2, 112–118 (2006). https://doi.org/10.1038/nchembio0306-112

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