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Structural Basis of Small-Molecule Aggregate Induced Inhibition of a Protein–Protein Interaction

Authors: Jonathan M. Blevitt; Michael D. Hack; Krystal L. Herman; Paul F. Jackson; Paul J. Krawczuk; Alec D. Lebsack; Annie X. Liu; +6 Authors

Structural Basis of Small-Molecule Aggregate Induced Inhibition of a Protein–Protein Interaction

Abstract

A prevalent observation in high-throughput screening and drug discovery programs is the inhibition of protein function by small-molecule compound aggregation. Here, we present the X-ray structural description of aggregation-based inhibition of a protein-protein interaction involving tumor necrosis factor α (TNFα). An ordered conglomerate of an aggregating small-molecule inhibitor (JNJ525) induces a quaternary structure switch of TNFα that inhibits the protein-protein interaction between TNFα and TNFα receptors. SPD-304 may employ a similar mechanism of inhibition.

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Keywords

Molecular Structure, Tumor Necrosis Factor-alpha, Proton Magnetic Resonance Spectroscopy, Humans, Carbon-13 Magnetic Resonance Spectroscopy, Crystallography, X-Ray, Protein Binding

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
59
Top 10%
Top 10%
Top 10%