1K2P | pdb_00001k2p

Crystal structure of Bruton's tyrosine kinase domain

• PDB DOI: https://doi.org/10.2210/pdb1K2P/pdb

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


• Deposited: 2001-09-28 Released: 2002-06-26 
• Deposition Author(s): Mao, C., Zhou, M., Uckun, F.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 
  0.287 (Depositor) 
• R-Value Work: 
  0.221 (Depositor) 
• R-Value Observed: 
  0.221 (Depositor) 

Literature

Crystal structure of Bruton's tyrosine kinase domain suggests a novel pathway for activation and provides insights into the molecular basis of X-linked agammaglobulinemia.

Mao, C., Zhou, M., Uckun, F.M.

(2001) J Biological Chem 276: 41435-41443

• PubMed: 11527964 
• DOI: https://doi.org/10.1074/jbc.M104828200
• Primary Citation Related Structures: 
  1K2P


• PubMed Abstract: 
  

  Bruton's tyrosine kinase is intimately involved in signal transduction pathways regulating survival, activation, proliferation, and differentiation of B lineage lymphoid cells. Mutations in the human btk gene are the cause of X-linked agammaglobulinemia, a male immune deficiency disorder characterized by a lack of mature, immunoglobulin-producing B lymphocytes. We have determined the x-ray crystal structure of the Bruton's tyrosine kinase kinase domain in its unphosphorylated state to a 2.1 A resolution. A comparison with the structures of other tyrosine kinases and a possible mechanism of activation unique to Bruton's tyrosine kinase are provided.

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Organizational Affiliation: 
• Department of Structural Biology, Parker Hughes Cancer Center, St. Paul, Minnesota 55113, USA. [e-mail]

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 61.5 kDa 
• Atom Count: 4,178 
• Modeled Residue Count: 516 
• Deposited Residue Count: 526 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tyrosine-protein kinase BTK	A, B	263	Homo sapiens	Mutation(s): 0  EC: 2.7.1.112 (PDB Primary Data), 2.7.10.2 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q06187 (Homo sapiens) Explore Q06187  Go to UniProtKB:  Q06187
PHAROS:  Q06187 GTEx:  ENSG00000010671

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free:  0.287 (Depositor) 
• R-Value Work:  0.221 (Depositor) 
• R-Value Observed: 0.221 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45	α = 90
b = 104	β = 90
c = 116	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-06-26 
Deposition Author(s): Mao, C., Zhou, M., Uckun, F.M.

Revision History  

• Version 1.0: 2002-06-26
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Derived calculations