Dataset Information

Rational Screening for Cooperativity in Small-Molecule Inducers of Protein-Protein Associations.

ABSTRACT: The hallmark of a molecular glue is its ability to induce cooperative protein-protein interactions, leading to the formation of a ternary complex, despite weaker binding toward one or both individual proteins. Notably, the extent of cooperativity distinguishes molecular glues from bifunctional compounds, which constitute a second class of inducers of protein-protein interactions. However, apart from serendipitous discovery, there have been limited rational screening strategies for the high cooperativity exhibited by molecular glues. Here, we propose a binding-based screen of DNA-barcoded compounds on a target protein in the presence or absence of a presenter protein, using the "presenter ratio", the ratio of ternary enrichment to binary enrichment, as a predictive measure of cooperativity. Through this approach, we identified a range of cooperative, noncooperative, and uncooperative compounds in a single DNA-encoded library screen with bromodomain containing protein (BRD)9 and the VHL-elongin C-elongin B (VCB) complex. Our most cooperative hit compound, 13-7, exhibits micromolar binding affinity to BRD9 but nanomolar affinity for the ternary complex with BRD9 and VCB, with cooperativity comparable to classical molecular glues. This approach may enable the rational discovery of molecular glues for preselected proteins and thus facilitate the transition to a new paradigm of small-molecule therapeutics.

SUBMITTER: Liu S

PROVIDER: S-EPMC10603787 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature

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Rational Screening for Cooperativity in Small-Molecule Inducers of Protein-Protein Associations.

Liu Shuang S Tong Bingqi B Mason Jeremy W JW Ostrem Jonathan M JM Tutter Antonin A Hua Bruce K BK Tang Sunny A SA Bonazzi Simone S Briner Karin K Berst Frédéric F Zécri Frédéric J FJ Schreiber Stuart L SL

Journal of the American Chemical Society 20231010 42

The hallmark of a molecular glue is its ability to induce cooperative protein-protein interactions, leading to the formation of a ternary complex, despite weaker binding toward one or both individual proteins. Notably, the extent of cooperativity distinguishes molecular glues from bifunctional compounds, which constitute a second class of inducers of protein-protein interactions. However, apart from serendipitous discovery, there have been limited rational screening strategies for the high coope ...[more]

PMID: 37816014

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Dataset Information

Rational Screening for Cooperativity in Small-Molecule Inducers of Protein-Protein Associations.

Publications

Rational Screening for Cooperativity in Small-Molecule Inducers of Protein-Protein Associations.

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