Download MendeleyStructural basis for NONO-specific modification by the alpha-chloroacetamide compound (R)-SKBG-1.
Florio, A.V., Bure, C., Fribourg, S.(2026) Cell Chem Biol 33: 268-275.e3
- PubMed: 41519128 Search on PubMed
- DOI: https://doi.org/10.1016/j.chembiol.2025.12.013
- Primary Citation Related Structures:
9QXZ, 9QZL - PubMed Abstract:
Among the many proteins involved in cancer progression, an increasing number of RNA-binding proteins (RBPs) are central to the function of a cell and tightly associated to genetic diseases. In a recent study, small-molecule inhibitors have been identified as targeting NONO, an RBP known to be involved in mRNA splicing, DNA repair, and membraneless organelle stability. Here, we report the molecular basis of NONO targeting by the α-chloroacetamide molecule (R)-SKBG-1, its specific binding to NONO, and the enantiomer selectivity on the basis of mass spectrometry measurements and structure determination. We have determined the crystal structure of (R)-SKBG-1-bound to NONO homodimer. This study sheds light on the conformational plasticity of (R)-SKBG-1 when covalently bound to NONO. Altogether, these results give an experimental rationale for ligand modification and optimization in a future use as a drug against cancer.
- INSERM U1212, CNRS UMR5320, Université de Bordeaux, 2 Rue Hoffmann Martinot, 33000 Bordeaux, France; Department of Biological, Chemical and Pharmaceutical Sciences and Technology, University of Palermo, Via Archirafi 28, Palermo, Italy.
Organizational Affiliation:
