4LOQ

Structural basis of autoactivation of p38 alpha induced by TAB1 (Tetragonal crystal form with bound sulphate)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.319 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Mechanism and consequence of the autoactivation of p38 alpha mitogen-activated protein kinase promoted by TAB1.

De Nicola, G.F.Martin, E.D.Chaikuad, A.Bassi, R.Clark, J.Martino, L.Verma, S.Sicard, P.Tata, R.Atkinson, R.A.Knapp, S.Conte, M.R.Marber, M.S.

(2013) Nat.Struct.Mol.Biol. 20: 1182-1190

  • DOI: 10.1038/nsmb.2668
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • p38α mitogen-activated protein kinase (p38α) is activated by a variety of mechanisms, including autophosphorylation initiated by TGFβ-activated kinase 1 binding protein 1 (TAB1) during myocardial ischemia and other stresses. Chemical-genetic approach ...

    p38α mitogen-activated protein kinase (p38α) is activated by a variety of mechanisms, including autophosphorylation initiated by TGFβ-activated kinase 1 binding protein 1 (TAB1) during myocardial ischemia and other stresses. Chemical-genetic approaches and coexpression in mammalian, bacterial and cell-free systems revealed that mouse p38α autophosphorylation occurs in cis by direct interaction with TAB1(371-416). In isolated rat cardiac myocytes and perfused mouse hearts, TAT-TAB1(371-416) rapidly activates p38 and profoundly perturbs function. Crystal structures and characterization in solution revealed a bipartite docking site for TAB1 in the p38α C-terminal kinase lobe. TAB1 binding stabilizes active p38α and induces rearrangements within the activation segment by helical extension of the Thr-Gly-Tyr motif, allowing autophosphorylation in cis. Interference with p38α recognition by TAB1 abolishes its cardiac toxicity. Such intervention could potentially circumvent the drawbacks of clinical pharmacological inhibitors of p38 catalytic activity.


    Organizational Affiliation

    King's College London British Heart Foundation Centre of Excellence. The Rayne Institute, St Thomas' Hospital Campus, London, SE1 7EH, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mitogen-activated protein kinase 14
A, B, C, D
361Mus musculusMutation(s): 0 
Gene Names: Mapk14 (Crk1, Csbp1, Csbp2)
EC: 2.7.11.24
Find proteins for P47811 (Mus musculus)
Go to UniProtKB:  P47811
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TGF-beta-activated kinase 1 and MAP3K7-binding protein 1
M, L, K, N
29Mus musculusMutation(s): 0 
Gene Names: Tab1 (Map3k7ip1)
Find proteins for Q8CF89 (Mus musculus)
Go to UniProtKB:  Q8CF89
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SB4
Query on SB4

Download SDF File 
Download CCD File 
A, B, C, D
4-(4-FLUOROPHENYL)-1-(4-PIPERIDINYL)-5-(2-AMINO-4-PYRIMIDINYL)-IMIDAZOLE
SB220025
C18 H19 F N6
VSPFURGQAYMVAN-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A, B, C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
EDO
Query on EDO

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Download CCD File 
A, B, C, D
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
SB4IC50: 19 - 20 nM (99) BINDINGDB
SB4Kd: 7 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.319 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.192 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 87.100α = 90.00
b = 87.100β = 90.00
c = 228.280γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
SCALAdata scaling
GDAdata collection
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-08-21
    Type: Initial release
  • Version 1.1: 2013-09-11
    Type: Database references
  • Version 1.2: 2013-10-02
    Type: Database references
  • Version 1.3: 2013-10-23
    Type: Database references