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© Biologie structurale et chimie
Structure du domaine en doigt de zinc de la protéine NEMO, déterminée par Résonance magnétique nucléaire (RMN). Cette protéine jouant un rôle dans des maladies (cancer, inflammation), les connaissances acquises sur sa structure offrent de précieuses informations sur sa fonction.
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in The Journal of biological chemistry - 25 Nov 2008

Cordier F, Grubisha O, Traincard F, Véron M, Delepierre M, Agou F

Link to Pubmed [PMID] – 19033441

J. Biol. Chem. 2009 Jan;284(5):2902-7

NEMO (NF-kappaB essential modulator) is a regulatory protein essential to the canonical NF-kappaB signaling pathway, notably involved in immune and inflammatory responses, apoptosis, and oncogenesis. Here, we report that the zinc finger (ZF) motif, located in the regulatory C-terminal half of NEMO, forms a specific complex with ubiquitin. We have investigated the NEMO ZF-ubiquitin interaction and proposed a structural model of the complex based on NMR, fluorescence, and mutagenesis data and on the sequence homology with the polymerase eta ubiquitin-binding zinc finger involved in DNA repair. Functional complementation assays and in vivo pull-down experiments further show that ZF residues involved in ubiquitin binding are functionally important and required for NF-kappaB signaling in response to tumor necrosis factor-alpha. Thus, our findings indicate that NEMOZFisa bona fide ubiquitin-binding domain of the ubiquitin-binding zinc finger type.

https://www.ncbi.nlm.nih.gov/pubmed/19033441