Structural Basis for the Interaction of TAK1 Kinase with its Activating Protein TAB1

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.219 

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This is version 1.5 of the entry. See complete history


Structural basis for the interaction of TAK1 kinase with its activating protein TAB1

Brown, K.Vial, S.C.Dedi, N.Long, J.M.Dunster, N.J.Cheetham, G.M.

(2005) J Mol Biol 354: 1013-1020

  • DOI: https://doi.org/10.1016/j.jmb.2005.09.098
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Transforming growth factor-beta (TGF-beta)-activated kinase 1 (TAK1) is a member of the MAPKKK family of protein kinases, and is involved in intracellular signalling pathways stimulated by transforming growth factor beta, interleukin-1 and tumour necrosis factor-alpha. TAK1 is known to rely upon an additional protein, TAK1-binding protein 1 (TAB1), for complete activation. However, the molecular basis for this activation has yet to be elucidated. We have solved the crystal structure of a novel TAK1 chimeric protein and these data give insight into how TAK1 is activated by TAB1. Our results reveal a novel binding pocket on the TAK1 kinase domain whose shape complements that of a unique alpha-helix in the TAK1 binding domain of TAB1, providing the basis for an intimate hydrophobic association between the protein activator and its target.

  • Organizational Affiliation

    Vertex Pharmaceuticals (Europe) Ltd, 88 Milton Park, Abingdon, Oxfordshire OX14 4RY, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TAK1 kinase - TAB1 chimera fusion protein307Homo sapiensMutation(s): 0 
Gene Names: MAP3K7TAK1/MAP3K7IP1TAB1
UniProt & NIH Common Fund Data Resources
Find proteins for O43318 (Homo sapiens)
Explore O43318 
Go to UniProtKB:  O43318
GTEx:  ENSG00000135341 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO43318
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on ADN

Download Ideal Coordinates CCD File 
C10 H13 N5 O4
Binding Affinity Annotations 
IDSourceBinding Affinity
ADN BindingDB:  2EVA Kd: min: 4400, max: 3.40e+4 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.219 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.4α = 90
b = 144.3β = 90
c = 134.7γ = 90
Software Package:
Software NamePurpose
PROCORdata scaling
SCALAdata scaling
PROCORdata reduction
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-05-02
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-08-02
    Changes: Refinement description, Source and taxonomy
  • Version 1.4: 2017-10-18
    Changes: Refinement description
  • Version 1.5: 2024-02-14
    Changes: Data collection, Database references, Derived calculations