3FX0

Crystal structure of Human NEMO CC2_LZ domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.306 
  • R-Value Work: 0.247 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for recognition of diubiquitins by NEMO.

Lo, Y.C.Lin, S.C.Rospigliosi, C.C.Conze, D.B.Wu, C.J.Ashwell, J.D.Eliezer, D.Wu, H.

(2009) Mol.Cell 33: 602-615

  • DOI: 10.1016/j.molcel.2009.01.012

  • PubMed Abstract: 
  • NEMO is the regulatory subunit of the IkappaB kinase (IKK) in NF-kappaB activation, and its CC2-LZ region interacts with Lys63 (K63)-linked polyubiquitin to recruit IKK to receptor signaling complexes. In vitro, CC2-LZ also interacts with tandem diub ...

    NEMO is the regulatory subunit of the IkappaB kinase (IKK) in NF-kappaB activation, and its CC2-LZ region interacts with Lys63 (K63)-linked polyubiquitin to recruit IKK to receptor signaling complexes. In vitro, CC2-LZ also interacts with tandem diubiquitin. Here we report the crystal structure of CC2-LZ with two dimeric coiled coils representing CC2 and LZ, respectively. Surprisingly, mutagenesis and nuclear magnetic resonance experiments reveal that the binding sites for diubiquitins at LZ are composites of both chains and that each ubiquitin in diubiquitins interacts with symmetrical NEMO asymmetrically. For tandem diubiquitin, the first ubiquitin uses the conserved hydrophobic patch and the C-terminal tail, while the second ubiquitin uses an adjacent surface patch. For K63-linked diubiquitin, the proximal ubiquitin uses its conserved hydrophobic patch, while the distal ubiquitin mostly employs the C-terminal arm including the K63 linkage residue. These studies uncover the energetics and geometry for mutual recognition of NEMO and diubiquitins.


    Organizational Affiliation

    Department of Biochemistry, Weill Cornell Medical College, New York, NY 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NF-kappa-B essential modulator
A, B
96Homo sapiensMutation(s): 0 
Gene Names: IKBKG (FIP3, NEMO)
Find proteins for Q9Y6K9 (Homo sapiens)
Go to Gene View: IKBKG
Go to UniProtKB:  Q9Y6K9
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.306 
  • R-Value Work: 0.247 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 76.194α = 90.00
b = 76.194β = 90.00
c = 76.892γ = 120.00
Software Package:
Software NamePurpose
SHELXDphasing
SHELXphasing
DENZOdata reduction
CNSrefinement
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
ADSCdata collection
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-04-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description