Please use this identifier to cite or link to this item: http://hdl.handle.net/10609/151447
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dc.contributor.authorWard, Jake A.-
dc.contributor.authorRomartínez-Alonso, Beatriz-
dc.contributor.authorKay, Danielle-
dc.contributor.authorBellamy-Carter, Jeddidiah-
dc.contributor.authorThurairajah, Bethany-
dc.contributor.authorBasran, Jaswir-
dc.contributor.authorKwon, Hanna-
dc.contributor.authorLeney, Aneika C.-
dc.contributor.authorMacip, Salvador-
dc.contributor.authorRoversi, Pietro-
dc.contributor.authorMuskett, Frederick Wilson-
dc.contributor.authorDoveston, Richard-
dc.date.accessioned2024-10-30T08:25:15Z-
dc.date.available2024-10-30T08:25:15Z-
dc.date.issued2024-02-
dc.identifier.citationWard, J.A. [Jake A.], Romartinez Alonso, B. [Beatriz], Kay, D.F.[Danielle F.], Bellamy Carter, J. [Jeddidah], Thurairajah, B. [Bethany], Basran, J. [Jaswir], Kwon, H. [Hanna], Leney, A.C.[Aneika C.], Macip, S. [Salvador], Roversi, P. [Pietro], Muskett, F.W. [Frederick W.] & Doveston, R.G. [Richard G.]. (2024). Characterizing the protein-protein interaction between MDM2 and 14-3-3σ; proof of concept for small molecule stabilization. Journal of Biological Chemistry, 300(2), 1-13. doi: 10.1016/j.jbc.2024.105651-
dc.identifier.issn0021-9258MIAR
-
dc.identifier.urihttp://hdl.handle.net/10609/151447-
dc.description.abstractMouse Double Minute 2 (MDM2) is a key negative regulator of the tumor suppressor protein p53. MDM2 overexpression occurs in many types of cancer and results in the suppression of WT p53. The 14-3-3 family of adaptor proteins are known to bind MDM2 and the 14-3-3σ isoform controls MDM2 cellular localization and stability to inhibit its activity. Therefore, small molecule stabilization of the 14-3-3σ/MDM2 protein–protein interaction (PPI) is a potential therapeutic strategy for the treatment of cancer. Here, we provide a detailed biophysical and structural characterization of the phosphorylation-dependent interaction between 14-3-3σ and peptides that mimic the 14-3-3 binding motifs within MDM2. The data show that di-phosphorylation of MDM2 at S166 and S186 is essential for high affinity 14-3-3 binding and that the binary complex formed involves one MDM2 di-phosphorylated peptide bound to a dimer of 14-3-3σ. However, the two phosphorylation sites do not simultaneously interact so as to bridge the 14-3-3 dimer in a ‘multivalent’ fashion. Instead, the two phosphorylated MDM2 motifs ‘rock’ between the two binding grooves of the dimer, which is unusual in the context of 14-3-3 proteins. In addition, we show that the 14-3-3σ–MDM2 interaction is amenable to small molecule stabilization. The natural product fusicoccin A forms a ternary complex with a 14-3-3σ dimer and an MDM2 di-phosphorylated peptide resulting in the stabilization of the 14-3-3σ/MDM2 PPI. This work serves as a proof-of-concept of the drugability of the 14-3-3/MDM2 PPI and paves the way toward the development of more selective and efficacious small molecule stabilizers.en
dc.format.mimetypeapplication/pdfca
dc.language.isoengca
dc.publisherAmerican Society for Biochemistry and Molecular Biologyca
dc.relation.ispartofJournal of Biological Chemistry (JBC), 2024, 300(2)ca
dc.relation.urihttps://www.jbc.org/article/S0021-9258(24)00027-9/fulltext-
dc.rightsCC BY-
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/-
dc.subjectprotein protein interactionen
dc.subject14-3-3 proteinsen
dc.subjectMDM2en
dc.subjectp53en
dc.subjectmolecular glueen
dc.titleCharacterizing the protein–protein interaction between MDM2 and 14-3-3σ; proof of concept for small molecule stabilizationen
dc.typeinfo:eu-repo/semantics/articleca
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
dc.identifier.doihttps://doi.org/10.1016/j.jbc.2024.105651-
dc.gir.idAR/0000011375-
dc.relation.projectIDinfo:eu-repo/grantAgreement/EP/W015803/1-
dc.relation.projectIDinfo:eu-repo/grantAgreement/BB/S019456/1-
dc.relation.projectIDinfo:eu-repo/grantAgreement/BBSRC/BB/M01116X/1-
dc.relation.projectIDinfo:eu-repo/grantAgreement/BB/M01116X/1-
dc.relation.projectIDinfo:eu-repo/grantAgreement/BB/S019456/1-
dc.type.versioninfo:eu-repo/semantics/publishedVersion-
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