2B48

Bcl-XL 3D Domain Swapped Dimer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.45 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.261 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

BCL-X(L) Dimerization by Three-dimensional Domain Swapping.

O'Neill, J.W.Manion, M.K.Maguire, B.Hockenbery, D.M.

(2006) J.Mol.Biol. 356: 367-381

  • DOI: 10.1016/j.jmb.2005.11.032

  • PubMed Abstract: 
  • Dimeric interactions among anti- and pro-apoptotic members of the BCL-2 protein family are dynamically regulated and intimately involved in survival and death functions. We report the structure of a BCL-X(L) homodimers a 3D-domain swapped dimer (3DDS ...

    Dimeric interactions among anti- and pro-apoptotic members of the BCL-2 protein family are dynamically regulated and intimately involved in survival and death functions. We report the structure of a BCL-X(L) homodimers a 3D-domain swapped dimer (3DDS). The X-ray crystal structure demonstrates the mutual exchange of carboxy-terminal regions including BH2 (Bcl-2 homology 2) between monomer subunits, with the hinge region occurring at the hairpin turn between the fifth and sixth alpha helices. Both BH3 peptide-binding hydrophobic grooves are unoccupied in the 3DDS dimer and available for BH3 peptide binding, as confirmed by sedimentation velocity analysis. BCL-X(L) 3DDS dimers have increased pore-forming activity compared to monomers, suggesting that 3DDS dimers may act as intermediates in membrane pore formation. Chemical crosslinking studies of Cys-substituted BCL-X(L) proteins demonstrate that 3DDS dimers form in synthetic lipid vesicles.


    Organizational Affiliation

    Divisions of Clinical Research and Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Apoptosis regulator Bcl-X
A
218Homo sapiensMutation(s): 0 
Gene Names: BCL2L1 (BCL2L, BCLX)
Find proteins for Q07817 (Homo sapiens)
Go to Gene View: BCL2L1
Go to UniProtKB:  Q07817
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.45 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.261 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 92.645α = 90.00
b = 92.645β = 90.00
c = 96.636γ = 90.00
Software Package:
Software NamePurpose
EPMRphasing
SCALEPACKdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-02-14
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description