Biological Assembly 1  

 3D View: Structure

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

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

Biological Assembly 2  

 3D View: Structure

Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 69.68 kDa 
• Atom Count: 4778 
• Residue Count: 527 
• Unique protein chains: 1

1K1F

Structure of the Bcr-Abl Oncoprotein Oligomerization domain

• DOI: 10.2210/pdb1K1F/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2001-09-25 Released: 2002-02-06 
• Deposition Author(s): Zhao, X., Ghaffari, S., Lodish, H., Malashkevich, V.N., Kim, P.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.295 
• R-Value Work: 0.262 
• R-Value Observed: 0.262 

Literature

Structure of the Bcr-Abl oncoprotein oligomerization domain.

Zhao, X., Ghaffari, S., Lodish, H., Malashkevich, V.N., Kim, P.S.

(2002) Nat Struct Biol 9: 117-120

• PubMed: 11780146 
• DOI: 10.1038/nsb747
• Structures With Same Primary Citation


• PubMed Abstract: 
  

The Bcr-Abl oncoprotein is responsible for a wide range of human leukemias, including most cases of Philadelphia chromosome-positive chronic myelogenous leukemia. Oligomerization of Bcr-Abl is essential for oncogenicity. We determined the crystal structure of the N-terminal oligomerization domain of Bcr-Abl (residues 1-72 or Bcr1-72) and found a novel mode of oligomer formation. Two N-shaped monomers dimerize by swapping N-terminal helices and by forming an antiparallel coiled coil between C-terminal helices. Two dimers then stack onto each other to form a tetramer. The Bcr1-72 structure provides a basis for the design of inhibitors of Bcr-Abl transforming activity by disrupting Bcr-Abl oligomerization.

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Organizational Affiliation: 

Howard Hughes Medical Institute, Whitehead Institute for Biomedical Research, Department of Biology, Massachusetts Institute of Technology, Nine Cambridge Center, Cambridge, Massachusetts 02142-1401, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
BREAKPOINT CLUSTER REGION PROTEIN	A, B, C, D, E, F, G, H	72	Homo sapiens	Mutation(s): 4  Gene Names: BCR, BCR1, D22S11 EC: 2.7.1 (PDB Primary Data), 2.7.11.1 (UniProt)
Find proteins for P11274 (Homo sapiens) Go to UniProtKB:  P11274
NIH Common Fund Data Resources
PHAROS  P11274 GTEx  ENSG00000186716

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A,B,C,D,E,F,G,H	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.295 
• R-Value Work: 0.262 
• R-Value Observed: 0.262 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 35.988	α = 90
b = 121.173	β = 93.03
c = 60.432	γ = 90

Software Package:

Software Name	Purpose
MLPHARE	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-09-25 
• Released Date: 2002-02-06 
Deposition Author(s): Zhao, X., Ghaffari, S., Lodish, H., Malashkevich, V.N., Kim, P.S.

Revision History 

• Version 1.0: 2002-02-06
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance