Article (Scientific journals)
Molecular mechanism of IKK catalytic dimer docking to NF-κB substrates.
Li, Changqing; Moro, Stefano; Shostak, Kateryna et al.
2024In Nature Communications, 15 (1), p. 7692
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Keywords :
I-kappa B Kinase; NF-kappa B; NF-KappaB Inhibitor alpha; Humans; Phosphorylation; Protein Binding; Signal Transduction; NF-KappaB Inhibitor alpha/metabolism; NF-KappaB Inhibitor alpha/genetics; Molecular Docking Simulation; HEK293 Cells; Substrate Specificity; I-kappa B Kinase/metabolism; I-kappa B Kinase/chemistry; I-kappa B Kinase/genetics; NF-kappa B/metabolism; Protein Multimerization; Amino Acid Motifs
Abstract :
[en] The inhibitor of κB (IκB) kinase (IKK) is a central regulator of NF-κB signaling. All IKK complexes contain hetero- or homodimers of the catalytic IKKβ and/or IKKα subunits. Here, we identify a YDDΦxΦ motif, which is conserved in substrates of canonical (IκBα, IκBβ) and alternative (p100) NF-κB pathways, and which mediates docking to catalytic IKK dimers. We demonstrate a quantitative correlation between docking affinity and IKK activity related to IκBα phosphorylation/degradation. Furthermore, we show that phosphorylation of the motif's conserved tyrosine, an event previously reported to promote IκBα accumulation and inhibition of NF-κB gene expression, suppresses the docking interaction. Results from integrated structural analyzes indicate that the motif binds to a groove at the IKK dimer interface. Consistently, suppression of IKK dimerization also abolishes IκBα substrate binding. Finally, we show that an optimized bivalent motif peptide inhibits NF-κB signaling. This work unveils a function for IKKα/β dimerization in substrate motif recognition.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Li, Changqing;  Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, 67400, Illkirch, France
Moro, Stefano;  Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, 67400, Illkirch, France
Shostak, Kateryna  ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
O'Reilly, Francis J ;  Institute of Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, Berlin, Germany
Donzeau, Mariel;  Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, 67400, Illkirch, France
Graziadei, Andrea;  Institute of Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, Berlin, Germany
McEwen, Alastair G ;  Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC) / INSERM UMR-S 1258 / CNRS UMR7104/ Université de Strasbourg, 1 rue Laurent Fries, 67400, Illkirch, France
Desplancq, Dominique;  Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, 67400, Illkirch, France
Poussin-Courmontagne, Pierre ;  Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC) / INSERM UMR-S 1258 / CNRS UMR7104/ Université de Strasbourg, 1 rue Laurent Fries, 67400, Illkirch, France
Bachelart, Thomas;  Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, 67400, Illkirch, France
Fiskin, Mert;  Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, 67400, Illkirch, France
Berrodier, Nicolas;  Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC) / INSERM UMR-S 1258 / CNRS UMR7104/ Université de Strasbourg, 1 rue Laurent Fries, 67400, Illkirch, France
Pichard, Simon ;  Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC) / INSERM UMR-S 1258 / CNRS UMR7104/ Université de Strasbourg, 1 rue Laurent Fries, 67400, Illkirch, France
Brillet, Karl ;  Institut Biologie Moléculaire et Cellulaire (IBMC), CNRS UPR9002, 2 allée Konrad Roentgen, 67000, Strasbourg, France
Orfanoudakis, Georges;  Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, 67400, Illkirch, France
Poterszman, Arnaud ;  Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC) / INSERM UMR-S 1258 / CNRS UMR7104/ Université de Strasbourg, 1 rue Laurent Fries, 67400, Illkirch, France
Torbeev, Vladimir;  Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, 67400, Illkirch, France
Rappsilber, Juri ;  Institute of Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, Berlin, Germany
Davey, Norman E;  Division of Cancer Biology, The Institute of Cancer Research, 237 Fulham Road, London, SW3 6JB, UK
Chariot, Alain ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale ; WELBIO department, WEL Research Institute, avenue Pasteur, 6, 1300, Wavre, Belgium
Zanier, Katia ;  Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, 67400, Illkirch, France. zanier@unistra.fr
More authors (11 more) Less
Language :
English
Title :
Molecular mechanism of IKK catalytic dimer docking to NF-κB substrates.
Publication date :
03 September 2024
Journal title :
Nature Communications
eISSN :
2041-1723
Publisher :
Springer Science and Business Media LLC, England
Volume :
15
Issue :
1
Pages :
7692
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
ANR - Agence Nationale de la Recherche [FR]
FRM - Fondation pour la Recherche Médicale [FR]
Funding text :
The work was supported by grants from Agence Nationale de la Recherche (ANR JCJC, ref. ANR-13-JSV8-0004-01), ‘Ligue contre le Cancer’ (CCIRGE), ‘Fondation pour La Recherche Medicale’ (Equipes FRM, ref. DEQ20180339231), ITI Innovec (IdEx ANR-10-IDEX-0002), STRAT’US( ANR-20-SFRI-0012)) and ‘Alsace contre le Cancer’ and Instruct-ERIC (PID 11382) to KZ. Additional funding sources include ITI IMCBio+ (IdEx ANR-10-IDEX-0002, SFRI-STRAT’US ANR-20-SFRI-0012 and EUR IMCBio, ANR-17-EURE-0023) and FRISBI (ANR-10-INBS-0005) to IGBMC-CBI.
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