Biological Assembly 1  

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

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 42.00 kDa 
• Atom Count: 2932 
• Modelled Residue Count: 340 
• Deposited Residue Count: 366 
• Unique protein chains: 1

1WFC

STRUCTURE OF APO, UNPHOSPHORYLATED, P38 MITOGEN ACTIVATED PROTEIN KINASE P38 (P38 MAP KINASE) THE MAMMALIAN HOMOLOGUE OF THE YEAST HOG1 PROTEIN

• PDB DOI: 10.2210/pdb1WFC/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1996-09-13 Released: 1997-09-19 
• Deposition Author(s): Wilson, K.P., Fitzgibbon, M.J., Caron, P.R., Griffith, J.P., Chen, W., Mccaffrey, P.G., Chambers, S.P., Su, M.S.-S.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.297 
• R-Value Work: 0.213 
• R-Value Observed: 0.213 

Literature

Crystal structure of p38 mitogen-activated protein kinase.

Wilson, K.P., Fitzgibbon, M.J., Caron, P.R., Griffith, J.P., Chen, W., McCaffrey, P.G., Chambers, S.P., Su, M.S.

(1996) J Biol Chem 271: 27696-27700

• PubMed: 8910361 
• DOI: 10.1074/jbc.271.44.27696
• Primary Citation of Related Structures:  
  1WFC


• PubMed Abstract: 
  

p38 mitogen-activated protein kinase is activated by environmental stress and cytokines and plays a role in transcriptional regulation and inflammatory responses. The crystal structure of the apo, unphosphorylated form of p38 kinase has been solved at 2.3 A resolution. The fold and topology of p38 is similar to ERK2 (Zhang, F., Strand, A., Robbins, D., Cobb, M. H., and Goldsmith, E. J. (1994) Nature 367, 704-711). The relative orientation of the two domains of p38 kinase is different from that observed in the active form of cAMP-dependent protein kinase. The twist results in a misalignment of the active site of p38, suggesting that the orientation of the domains would have to change before catalysis could proceed. The residues that are phosphorylated upon activation of p38 are located on a surface loop that occupies the peptide binding channel. Occlusion of the active site by the loop, and misalignment of catalytic residues, may account for the low enzymatic activity of unphosphorylated p38 kinase.

---

Organizational Affiliation: 

Vertex Pharmaceuticals Incorporated, Cambridge, Massachusetts 02139-4211, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MITOGEN-ACTIVATED PROTEIN KINASE P38	A	366	Homo sapiens	Mutation(s): 0  Gene Names: MAPK14, CSBP, CSBP1, CSBP2, CSPB1, MXI2, SAPK2A EC: 2.7.1 (PDB Primary Data), 2.7.11.24 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q16539 (Homo sapiens) Explore Q16539  Go to UniProtKB:  Q16539
PHAROS:  Q16539

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.297 
• R-Value Work: 0.213 
• R-Value Observed: 0.213 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.193	α = 90
b = 86.25	β = 90
c = 123.988	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
BIOTEX	data reduction
BIOTEX	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1996-09-13 
• Released Date: 1997-09-19 
Deposition Author(s): Wilson, K.P., Fitzgibbon, M.J., Caron, P.R., Griffith, J.P., Chen, W., Mccaffrey, P.G., Chambers, S.P., Su, M.S.-S.

Revision History  

• Version 1.0: 1997-09-19
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance