2EVA image
Entry Detail
PDB ID:
2EVA
Keywords:
TRANSFERASE/TRANSFERASE ACTIVATOR
Title:
Structural Basis for the Interaction of TAK1 Kinase with its Activating Protein TAB1
Biological Source:
Source Organism:
Homo sapiens
Host Organism:
Spodoptera frugiperda
PDB Version:
Deposition Date:
2005-10-31
Release Date:
2006-05-02
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.00 Å
R-Value Free:
0.23
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
I 2 2 2
2EVA validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:TAK1 kinase - TAB1 chimera fusion protein
Chain IDs:A
Chain Length:307
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:O43318 Pfam ID:PF07714
Ligand Molecules
ADN
Primary Citation
Structural basis for the interaction of TAK1 kinase with its activating protein TAB1
J.Mol.Biol. 354 1013 1020 (2005)
PMID: 16289117 DOI: 10.1016/j.jmb.2005.09.098

Abstact

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.

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Primary Citation of related structures
2EVA