Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 42497.82 
• Atom Count: 2874 
• Residue Count: 364 
• Unique protein chains: 1

3ERK

THE COMPLEX STRUCTURE OF THE MAP KINASE ERK2/SB220025

• DOI: 10.2210/pdb3ERK/pdb

• Classification: TRANSFERASE
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 1998-07-09 Released: 1999-07-22 
• Deposition Author(s): Wang, Z., Canagarajah, B., Boehm, J.C., Cobb, M.H., Young, P.R., Abdel-Meguid, S., Adams, J.L., Goldsmith, E.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.1 Å
• R-Value Free: 0.262 
• R-Value Work: 0.206 

Literature

Structural basis of inhibitor selectivity in MAP kinases.

Wang, Z., Canagarajah, B.J., Boehm, J.C., Kassisa, S., Cobb, M.H., Young, P.R., Abdel-Meguid, S., Adams, J.L., Goldsmith, E.J.

(1998) Structure 6: 1117-1128

• PubMed: 9753691 
• Primary Citation of Related Structures:  
  4ERK, 1BMK, 1BL7, 1BL6, 1A9U


• PubMed Abstract: 
  

The mitogen-activated protein (MAP) kinases are important signaling molecules that participate in diverse cellular events and are potential targets for intervention in inflammation, cancer, and other diseases. The MAP kinase p38 is responsive to environmental stresses and is involved in the production of cytokines during inflammation. In contrast, the activation of the MAP kinase ERK2 (extracellular-signal-regulated kinase 2) leads to cellular differentiation or proliferation. The anti-inflammatory agent pyridinylimidazole and its analogs (SB [SmithKline Beecham] compounds) are highly potent and selective inhibitors of p38, but not of the closely-related ERK2, or other serine/threonine kinases. Although these compounds are known to bind to the ATP-binding site, the origin of the inhibitory specificity toward p38 is not clear.

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Organizational Affiliation: 

Department of Biochemistry The University of Texas Southwestern Medical Center at Dallas 5323 Harry Hines Boulevard, Dallas, TX 75235, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
EXTRACELLULAR REGULATED KINASE 2	A	364	Rattus norvegicus	Mutation(s): 0  Gene Names: Mapk1 (Erk2, Mapk, Prkm1) EC: 2.7.11.24
Find proteins for P63086 (Rattus norvegicus) Go to UniProtKB:  P63086

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
SB4	A	4-(4-FLUOROPHENYL)-1-(4-PIPERIDINYL)-5-(2-AMINO-4-PYRIMIDINYL)-IMIDAZOLE SB220025 C18 H19 F N6 VSPFURGQAYMVAN-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
SB4	IC50: 18000 - 19000 nM (100) BINDINGDB
SB4	IC50: 18000 nM BINDINGMOAD
SB4	IC50: 18000 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.1 Å
• R-Value Free: 0.262 
• R-Value Work: 0.206 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 48.850	α = 90.00
b = 70.000	β = 109.20
c = 60.700	γ = 90.00

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1998-07-09 
• Released Date: 1999-07-22 
• Deposition Author(s): Wang, Z., Canagarajah, B., Boehm, J.C., Cobb, M.H., Young, P.R., Abdel-Meguid, S., Adams, J.L., Goldsmith, E.J.

Revision History 

• Version 1.0: 1999-07-22
  Type: Initial release
• Version 1.1: 2008-03-25
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance