4DN5

Crystal Structure of NF-kB-inducing Kinase (NIK)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 

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This is version 1.2 of the entry. See complete history. 


Literature

Structure of Nuclear Factor Kappa B-inducing kinase domain reveals a constitutively active conformation

Liu, J., Sudom, A., Min, X., Cao, Z., Gao, X., Ayres, M., Lee, F., Cao, P., Johnstone, S., Plotnikova, O., Walker, N., Chen, G., Wang, Z.

(2012) J Biol Chem 287: 27326-27334

  • DOI: 10.1074/jbc.M112.366658
  • Primary Citation of Related Structures:  
    4DN5

  • PubMed Abstract: 

    • NF-κB-inducing kinase (NIK) is a central component in the non-canonical NF-κB signaling pathway. Excessive NIK activity is implicated in various disorders, such as autoimmune conditions and cancers. Here, we report the first crystal structure of truncated human NIK in complex with adenosine 5'-O-(thiotriphosphate) at a resolution of 2 ...

    NF-κB-inducing kinase (NIK) is a central component in the non-canonical NF-κB signaling pathway. Excessive NIK activity is implicated in various disorders, such as autoimmune conditions and cancers. Here, we report the first crystal structure of truncated human NIK in complex with adenosine 5'-O-(thiotriphosphate) at a resolution of 2.5 Å. This truncated protein is a catalytically active construct, including an N-terminal extension of 60 residues prior to the kinase domain, the kinase domain, and 20 residues afterward. The structure reveals that the NIK kinase domain assumes an active conformation in the absence of any phosphorylation. Analysis of the structure uncovers a unique role for the N-terminal extension sequence, which stabilizes helix αC in the active orientation and keeps the kinase domain in the catalytically competent conformation. Our findings shed light on the long-standing debate over whether NIK is a constitutively active kinase. They also provide a molecular basis for the recent observation of gain-of-function activity for an N-terminal deletion mutant (ΔN324) of NIK, leading to constitutive non-canonical NF-κB signaling with enhanced B-cell adhesion and apoptosis resistance.

    Organizational Affiliation: 

    Amgen Inc., South San Francisco, California 94080, USA.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mitogen-activated protein kinase kinase kinase 14A, B356Homo sapiensMutation(s): 1 
Gene Names: MAP3K14, NF-kB-inducing Kinase, NIK
EC: 2.7.11.25
Find proteins for Q99558 (Homo sapiens)
Explore Q99558 
Go to UniProtKB:  Q99558
NIH Common Fund Data Resources
PHAROS:  Q99558
GTEx:  ENSG00000006062
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.06α = 90
b = 85.06β = 90
c = 115.4γ = 90
Software Package:
Software NamePurpose
BOSdata collection
PHASERphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-06-27
    Type: Initial release
  • Version 1.1: 2013-01-30
    Changes: Non-polymer description
  • Version 1.2: 2013-07-17
    Changes: Database references