Structure of a Bcl-w dimer

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 

wwPDB Validation   3D Report Full Report

This is version 1.1 of the entry. See complete history


Crystal Structure of a Bcl-W Domain-Swapped Dimer: Implications for the Function of Bcl-2 Family Proteins.

Lee, E.F.Dewson, G.Smith, B.J.Evangelista, M.Pettikiriarachchi, A.Dogovski, C.Perugini, M.A.Colman, P.M.Fairlie, W.D.

(2011) Structure 19: 1467

  • DOI: https://doi.org/10.1016/j.str.2011.07.015
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The prosurvival and proapoptotic proteins of the BCL-2 family share a similar three-dimensional fold despite their opposing functions. However, many biochemical studies highlight the requirement for conformational changes for the functioning of both types of proteins, although structural data to support such changes remain elusive. Here, we describe the X-ray structure of dimeric BCL-W that reveals a major conformational change involving helices α3 and α4 hinging away from the core of the protein. Biochemical and functional studies reveal that the α4-α5 hinge region is required for dimerization of BCL-W, and functioning of both pro- and antiapoptotic BCL-2 proteins. Hence, this structure reveals a conformational flexibility not seen in previous BCL-2 protein structures and provides insights into how these regulators of apoptosis can change conformation to exert their function.

  • Organizational Affiliation

    Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
177Homo sapiensMutation(s): 3 
UniProt & NIH Common Fund Data Resources
Find proteins for Q92843 (Homo sapiens)
Explore Q92843 
Go to UniProtKB:  Q92843
PHAROS:  Q92843
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ92843
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.227α = 90
b = 76.227β = 90
c = 112.847γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-10-26
    Type: Initial release
  • Version 1.1: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description