Understanding the role of intermolecular interactions between lissoclimides and the eukaryotic ribosome.

Fiche publication


Date publication

février 2019

Journal

Nucleic acids research

Auteurs

Membres identifiés du Cancéropôle Est :
Dr YUSUPOV Marat, Dr YUSUPOVA Gulnara


Tous les auteurs :
Pellegrino S, Meyer M, Könst ZA, Holm M, Voora VK, Kashinskaya D, Zanette C, Mobley DL, Yusupova G, Vanderwal CD, Blanchard SC, Yusupov M

Résumé

Natural products that target the eukaryotic ribosome are promising therapeutics to treat a variety of cancers. It is therefore essential to determine their molecular mechanism of action to fully understand their mode of interaction with the target and to inform the development of new synthetic compounds with improved potency and reduced cytotoxicity. Toward this goal, we have previously established a short synthesis pathway that grants access to multiple congeners of the lissoclimide family. Here we present the X-ray co-crystal structure at 3.1 Å resolution of C45, a potent congener with two A-ring chlorine-bearing stereogenic centers with 'unnatural' configurations, with the yeast 80S ribosome, intermolecular interaction energies of the C45/ribosome complex, and single-molecule FRET data quantifying the impact of C45 on both human and yeast ribosomes. Together, these data provide new insights into the role of unusual non-covalent halogen bonding interactions involved in the binding of this synthetic compound to the 80S ribosome.

Référence

Nucleic Acids Res.. 2019 Feb 13;: