Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 83.08 kDa 
• Atom Count: 5500 
• Modelled Residue Count: 672 
• Deposited Residue Count: 722 
• Unique protein chains: 2

2OZA

Structure of p38alpha complex

• PDB DOI: 10.2210/pdb2OZA/pdb

• Classification: SIGNALING PROTEIN/TRANSFERASE
• Organism(s): Homo sapiens, Mus musculus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2007-02-25 Released: 2007-04-03 
• Deposition Author(s): White, A., Pargellis, C.A., Studts, J.M., Werneburg, B.G., Farmer II, B.T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.296 
• R-Value Work: 0.239 

Literature

Molecular basis of MAPK-activated protein kinase 2:p38 assembly

White, A., Pargellis, C.A., Studts, J.M., Werneburg, B.G., Farmer II, B.T.

(2007) Proc Natl Acad Sci U S A 104: 6353-6358

• PubMed: 17395714 
• DOI: 10.1073/pnas.0701679104
• Primary Citation of Related Structures:  
  2OZA


• PubMed Abstract: 
  

p38 MAPK and MAPK-activated protein kinase 2 (MK2) are key components of signaling pathways leading to many cellular responses, notably the proinflammatory cytokine production. The physical association of p38alpha isoform and MK2 is believed to be physiologically important for this signaling. We report the 2.7-A resolution crystal structure of the unphosphorylated complex between p38alpha and MK2. These protein kinases bind "head-to-head," present their respective active sites on approximately the same side of the heterodimer, and form extensive intermolecular interactions. Among these interactions, the MK2 Ile-366-Ala-390, which includes the bipartite nuclear localization signal, binds to the p38alpha-docking region. This binding supports the involvement of noncatalytic regions to the tight binding of the MK2:p38alpha binary assembly. The MK2 residues 345-365, containing the nuclear export signal, block access to the p38alpha active site. Some regulatory phosphorylation regions of both protein kinases engage in multiple interactions with one another in this complex. This structure gives new insights into the regulation of the protein kinases p38alpha and MK2, aids in the better understanding of their known cellular and biochemical studies, and provides a basis for understanding other regulatory protein-protein interactions involving signal transduction proteins.

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Organizational Affiliation: 

Department of Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT 06877, USA. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MAP kinase-activated protein kinase 2	A	356	Homo sapiens	Mutation(s): 0  Gene Names: MAPKAPK2 EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for P49137 (Homo sapiens) Explore P49137  Go to UniProtKB:  P49137
PHAROS:  P49137

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Mitogen-activated protein kinase 14	B	366	Mus musculus	Mutation(s): 0  Gene Names: Mapk14, Crk1, Csbp1, Csbp2 EC: 2.7.11.24
UniProt
Find proteins for P47811 (Mus musculus) Explore P47811  Go to UniProtKB:  P47811

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.296 
• R-Value Work: 0.239 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 83.31	α = 90
b = 83.31	β = 90
c = 231.49	γ = 90

Software Package:

Software Name	Purpose
d*TREK	data processing
CNS	refinement
PDB_EXTRACT	data extraction
SGX-CAT	data collection
d*TREK	data reduction
d*TREK	data scaling
AMoRE	phasing
CNX	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-02-25 
• Released Date: 2007-04-03 
Deposition Author(s): White, A., Pargellis, C.A., Studts, J.M., Werneburg, B.G., Farmer II, B.T.

Revision History  

• Version 1.0: 2007-04-03
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance