4BDU

Bax BH3-in-Groove dimer (GFP)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Bax Crystal Structures Reveal How Bh3 Domains Activate Bax and Nucleate its Oligomerization to Induce Apoptosis.

Czabotar, P.E.Westphal, D.Dewson, G.Ma, S.Hockings, C.Fairlie, W.D.Lee, E.F.Yao, S.Robin, A.Y.Smith, B.J.Huang, D.C.Kluck, R.M.Adams, J.M.Colman, P.M.

(2013) Cell 152: 519

  • DOI: 10.1016/j.cell.2012.12.031
  • Primary Citation of Related Structures:  
    4BD2, 4BDU, 4BD6, 4BD7, 4BD8

  • PubMed Abstract: 
  • In stressed cells, apoptosis ensues when Bcl-2 family members Bax or Bak oligomerize and permeabilize the mitochondrial outer membrane. Certain BH3-only relatives can directly activate them to mediate this pivotal, poorly understood step. To clarify ...

    In stressed cells, apoptosis ensues when Bcl-2 family members Bax or Bak oligomerize and permeabilize the mitochondrial outer membrane. Certain BH3-only relatives can directly activate them to mediate this pivotal, poorly understood step. To clarify the conformational changes that induce Bax oligomerization, we determined crystal structures of BaxΔC21 treated with detergents and BH3 peptides. The peptides bound the Bax canonical surface groove but, unlike their complexes with prosurvival relatives, dissociated Bax into two domains. The structures define the sequence signature of activator BH3 domains and reveal how they can activate Bax via its groove by favoring release of its BH3 domain. Furthermore, Bax helices α2-α5 alone adopted a symmetric homodimer structure, supporting the proposal that two Bax molecules insert their BH3 domain into each other's surface groove to nucleate oligomerization. A planar lipophilic surface on this homodimer may engage the membrane. Our results thus define critical Bax transitions toward apoptosis.


    Organizational Affiliation

    The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria 3052, Australia. czabotar@wehi.edu.au



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GREEN FLUORESCENT PROTEIN, APOPTOSIS REGULATOR BAXABCD309Aequorea victoriaHomo sapiens
This entity is chimeric
Mutation(s): 3 
Gene Names: GFP
Find proteins for P42212 (Aequorea victoria)
Explore P42212 
Go to UniProtKB:  P42212
Find proteins for Q07812 (Homo sapiens)
Explore Q07812 
Go to UniProtKB:  Q07812
NIH Common Fund Data Resources
PHAROS  Q07812
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CR2
Query on CR2
A,B,C,DL-PEPTIDE LINKINGC13 H13 N3 O4GLY,TYR,GLY
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.216 
  • Space Group: P 64
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.314α = 90
b = 112.314β = 90
c = 293.27γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-02-13
    Type: Initial release
  • Version 1.1: 2017-03-15
    Changes: Source and taxonomy
  • Version 1.2: 2019-10-23
    Changes: Data collection, Database references, Derived calculations, Other