RCSB PDB - 3JSV: Crystal structure of mouse NEMO CoZi in complex with Lys63-linked di-ubiquitin (original) (raw)
Crystal structure of the NEMO ubiquitin-binding domain in complex with Lys 63-linked di-ubiquitin
[Yoshikawa, A.](/search?q=citation.rcsb%5Fauthors:Yoshikawa, A.), [Sato, Y.](/search?q=citation.rcsb%5Fauthors:Sato, Y.), [Yamashita, M.](/search?q=citation.rcsb%5Fauthors:Yamashita, M.), [Mimura, H.](/search?q=citation.rcsb%5Fauthors:Mimura, H.), [Yamagata, A.](/search?q=citation.rcsb%5Fauthors:Yamagata, A.), [Fukai, S.](/search?q=citation.rcsb%5Fauthors:Fukai, S.)
(2009) FEBS Lett 583: 3317-3322
PubMed: 19766637 Search on PubMed
PubMed Abstract:
NEMO is essential for activation of the NF-kappaB signaling pathway, which is regulated by ubiquitination of proteins. The C-terminal leucine zipper of NEMO and its adjacent coiled-coil region (CC2-LZ) reportedly bind to linear ubiquitin chains with 1 microM affinity and to Lys 63-linked chains with 100 microM affinity. Here we report the crystal structure of the CC2-LZ region of mouse NEMO in complex with Lys 63-linked di-ubiquitin (K63-Ub(2)) at 2.7A resolution. The ubiquitin-binding region consists of a 130A-long helix and forms a parallel coiled-coil dimer. The Ile 44-centered hydrophobic patch of ubiquitin is recognized in the middle of the NEMO ubiquitin-binding region. NEMO interacts with each K63-Ub(2)via a single ubiquitin-binding site, consistent with low affinity binding with K63-Ub(2).
Organizational Affiliation:
Structural Biology Laboratory, Life Science Division, Synchrotron Radiation Research Organization and Institute of Molecular and Cellular Biosciences, The University of Tokyo, Tokyo 113-0032, Japan.