Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

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

Macromolecule Content

• Total Structure Weight: 33134.42 
• Atom Count: 2048 
• Residue Count: 283 
• Unique protein chains: 1

3K54

Structures of human Bruton's tyrosine kinase in active and inactive conformations suggests a mechanism of activation for TEC family kinases.

• DOI: 10.2210/pdb3K54/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): 1 


• Deposited: 2009-10-06 Released: 2010-01-19 
• Deposition Author(s): Marcotte, D.J., Liu, Y.-T., Arduini, R.M., Hession, C.A., Miatkowski, K., Wildes, C.P., Cullen, P.F., Hopkins, B.T., Mertsching, E., Jenkins, T.J., Romanowski, M.J., Baker, D.P., Silvian, L.F.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.94 Å
• R-Value Free: 0.258 
• R-Value Work: 0.199 

Literature

Structures of human Bruton's tyrosine kinase in active and inactive conformations suggest a mechanism of activation for TEC family kinases.

Marcotte, D.J., Liu, Y.T., Arduini, R.M., Hession, C.A., Miatkowski, K., Wildes, C.P., Cullen, P.F., Hong, V., Hopkins, B.T., Mertsching, E., Jenkins, T.J., Romanowski, M.J., Baker, D.P., Silvian, L.F.

(2010) Protein Sci. 19: 429-439

• PubMed: 20052711 
• DOI: 10.1002/pro.321
• Primary Citation of Related Structures:  
  3GEN


• PubMed Abstract: 
  

Bruton's tyrosine kinase (BTK), a member of the TEC family of kinases, plays a crucial role in B-cell maturation and mast cell activation. Although the structures of the unphosphorylated mouse BTK kinase domain and the unphosphorylated and phosphorylated kinase domains of human ITK are known, understanding the kinase selectivity profiles of BTK inhibitors has been hampered by the lack of availability of a high resolution, ligand-bound BTK structure. Here, we report the crystal structures of the human BTK kinase domain bound to either Dasatinib (BMS-354825) at 1.9 A resolution or to 4-amino-5-(4-phenoxyphenyl)-7H-pyrrolospyrimidin- 7-yl-cyclopentane at 1.6 A resolution. This data provides information relevant to the development of small molecule inhibitors targeting BTK and the TEC family of nonreceptor tyrosine kinases. Analysis of the structural differences between the TEC and Src families of kinases near the Trp-Glu-Ile motif in the N-terminal region of the kinase domain suggests a mechanism of regulation of the TEC family members.

---

Organizational Affiliation: 

Biogen Idec, Inc., Drug Discovery Department, 12 Cambridge Center, Cambridge, Massachusetts 02142, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Tyrosine-protein kinase BTK	A	283	Homo sapiens	Mutation(s): 1  Gene Names: BTK (AGMX1, ATK, BPK) EC: 2.7.10.2
Find proteins for Q06187 (Homo sapiens) Go to Gene View: BTK Go to UniProtKB:  Q06187

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
1N1	A	N-(2-CHLORO-6-METHYLPHENYL)-2-({6-[4-(2-HYDROXYETHYL)PIPERAZIN-1-YL]-2-METHYLPYRIMIDIN-4-YL}AMINO)-1,3-THIAZOLE-5-CARBOXAMIDE Dasatinib C22 H26 Cl N7 O2 S ZBNZXTGUTAYRHI-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
1N1	Kd: 1.4 nM (99) BINDINGDB
1N1	IC50: 1.3 - 5 nM (99) BINDINGDB
1N1	Kd: 1 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.94 Å
• R-Value Free: 0.258 
• R-Value Work: 0.199 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 73.438	α = 90.00
b = 104.622	β = 90.00
c = 38.107	γ = 90.00

Software Package:

Software Name	Purpose
HKL-2000	data collection
MOLREP	phasing
HKL-2000	data reduction
SCALA	data scaling
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2009-10-06 
• Released Date: 2010-01-19 
• Deposition Author(s): Marcotte, D.J., Liu, Y.-T., Arduini, R.M., Hession, C.A., Miatkowski, K., Wildes, C.P., Cullen, P.F., Hopkins, B.T., Mertsching, E., Jenkins, T.J., Romanowski, M.J., Baker, D.P., Silvian, L.F.

Revision History 

• Version 1.0: 2010-01-19
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Advisory, Refinement description, Version format compliance