4U2V

Bak BH3-in-Groove dimer (GFP)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Bak Core and Latch Domains Separate during Activation, and Freed Core Domains Form Symmetric Homodimers.

Brouwer, J.M.Westphal, D.Dewson, G.Robin, A.Y.Uren, R.T.Bartolo, R.Thompson, G.V.Colman, P.M.Kluck, R.M.Czabotar, P.E.

(2014) Mol.Cell 55: 938-946

  • DOI: 10.1016/j.molcel.2014.07.016
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Apoptotic stimuli activate and oligomerize the proapoptotic proteins Bak and Bax, resulting in mitochondrial outer-membrane permeabilization and subsequent cell death. This activation can occur when certain BH3-only proteins interact directly with Ba ...

    Apoptotic stimuli activate and oligomerize the proapoptotic proteins Bak and Bax, resulting in mitochondrial outer-membrane permeabilization and subsequent cell death. This activation can occur when certain BH3-only proteins interact directly with Bak and Bax. Recently published crystal structures reveal that Bax separates into core and latch domains in response to BH3 peptides. The distinguishing characteristics of BH3 peptides capable of directly activating Bax were also elucidated. Here we identify specific BH3 peptides capable of "unlatching" Bak and describe structural insights into Bak activation and oligomerization. Crystal structures and crosslinking experiments demonstrate that Bak undergoes a conformational change similar to that of Bax upon activation. A structure of the Bak core domain dimer provides a high-resolution image of this key intermediate in the pore-forming oligomer. Our results confirm an analogous mechanism for activation and dimerization of Bak and Bax in response to certain BH3 peptides.


    Organizational Affiliation

    Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3052, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, Victoria 3052, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Green fluorescent protein,Bcl-2 homologous antagonist/killer
B, D, C, A
315Aequorea victoriaHomo sapiens
This entity is chimeric
Mutation(s): 2 
Gene Names: GFP, BAK1 (BAK, BCL2L7, CDN1)
Find proteins for P42212 (Aequorea victoria)
Go to UniProtKB:  P42212
Find proteins for Q16611 (Homo sapiens)
Go to Gene View: BAK1
Go to UniProtKB:  Q16611
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CAC
Query on CAC

Download SDF File 
Download CCD File 
A, B, D
CACODYLATE ION
dimethylarsinate
C2 H6 As O2
OGGXGZAMXPVRFZ-UHFFFAOYSA-M
 Ligand Interaction
MPD
Query on MPD

Download SDF File 
Download CCD File 
A, C
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CR2
Query on CR2
A, B, C, D
L-PEPTIDE LINKINGC13 H13 N3 O4GLY, TYR, GLY
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.198 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 109.190α = 90.00
b = 63.840β = 98.35
c = 122.020γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
PHENIXrefinement
PHASERphasing
PHENIXrefinement
XDSdata reduction
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Health and Medical Research Council (Australia)Australia1059331
National Health and Medical Research Council (Australia)Australia1023055
National Health and Medical Research Council (Australia)Australia1016701

Revision History 

  • Version 1.0: 2014-09-10
    Type: Initial release
  • Version 1.1: 2014-10-01
    Type: Database references
  • Version 1.2: 2017-09-27
    Type: Author supporting evidence, Data collection, Database references, Derived calculations, Other, Source and taxonomy