Download MendeleyThe IKK-binding domain of NEMO is an irregular coiled coil with a dynamic binding interface.
Barczewski, A.H., Ragusa, M.J., Mierke, D.F., Pellegrini, M.(2019) Sci Rep 9: 2950-2950
- PubMed: 30814588
- DOI: https://doi.org/10.1038/s41598-019-39588-2
- Primary Citation of Related Structures:
6MI3, 6MI4 - PubMed Abstract:
NEMO is an essential component in the activation of the canonical NF-κB pathway and exerts its function by recruiting the IκB kinases (IKK) to the IKK complex. Inhibition of the NEMO/IKKs interaction is an attractive therapeutic paradigm for diseases related to NF-κB mis-regulation, but a difficult endeavor because of the extensive protein-protein interface. Here we report the high-resolution structure of the unbound IKKβ-binding domain of NEMO that will greatly facilitate the design of NEMO/IKK inhibitors. The structures of unbound NEMO show a closed conformation that partially occludes the three binding hot-spots and suggest a facile transition to an open state that can accommodate ligand binding. By fusing coiled-coil adaptors to the IKKβ-binding domain of NEMO, we succeeded in creating a protein with improved solution behavior, IKKβ-binding affinity and crystallization compatibility, which will enable the structural characterization of new NEMO/inhibitor complexes.
Organizational Affiliation:
Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
