2JBY

A viral protein unexpectedly mimics the structure and function of pro- survival Bcl-2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.41 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.287 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A structural viral mimic of prosurvival Bcl-2: a pivotal role for sequestering proapoptotic Bax and Bak.

Kvansakul, M.van Delft, M.F.Lee, E.F.Gulbis, J.M.Fairlie, W.D.Huang, D.C.Colman, P.M.

(2007) Mol. Cell 25: 933-942

  • DOI: 10.1016/j.molcel.2007.02.004
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Many viruses express antiapoptotic proteins to counter host defense mechanisms that would otherwise trigger the rapid clearance of infected cells. For example, adenoviruses and some gamma-herpesviruses express homologs of prosurvival Bcl-2 to subvert ...

    Many viruses express antiapoptotic proteins to counter host defense mechanisms that would otherwise trigger the rapid clearance of infected cells. For example, adenoviruses and some gamma-herpesviruses express homologs of prosurvival Bcl-2 to subvert the host's apoptotic machinery. Myxoma virus, a double-stranded DNA virus of the pox family, harbors antiapoptotic M11L, its virulence factor. Analysis of its three-dimensional structure reveals that despite lacking any primary sequence similarity to Bcl-2, it adopts a virtually identical protein fold. This allows it to associate with BH3 domains, especially those of Bax and Bak. We found that M11L acts primarily by sequestering Bax and Bak, thereby blocking the killing action of these essential cell-death mediators. These findings expand the family of protein sequences that act like Bcl-2 to block apoptosis and support the conclusion that the prosurvival action of these proteins critically depends on their ability to bind and antagonize Bax and/or Bak.


    Organizational Affiliation

    The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3050, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
M11L PROTEIN
A
145Myxoma virusMutation(s): 0 
Gene Names: M11L
Find proteins for Q85295 (Myxoma virus)
Go to UniProtKB:  Q85295
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BCL-2 HOMOLOGOUS ANTAGONIST/KILLER 2
B
26Homo sapiensMutation(s): 0 
Gene Names: BAK1 (BAK, BCL2L7, CDN1)
Find proteins for Q16611 (Homo sapiens)
Go to Gene View: BAK1
Go to UniProtKB:  Q16611
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.41 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.287 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 69.187α = 90.00
b = 69.187β = 90.00
c = 120.601γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
SHARPphasing
HKL-2000data scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-03-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2018-06-13
    Type: Advisory, Data collection, Database references