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 
  • R-Value Observed: 0.288 

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:  
    2JBY, 2JBX

  • 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 the host's apoptotic machinery ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
M11L PROTEIN A145Myxoma virusMutation(s): 0 
Gene Names: M11Lm011LMYXV_gp015
Find proteins for Q85295 (Myxoma virus)
Explore Q85295 
Go to UniProtKB:  Q85295
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
BCL-2 HOMOLOGOUS ANTAGONIST/KILLER 2 B26Homo sapiensMutation(s): 0 
Gene Names: BAK1BAKBCL2L7CDN1
Find proteins for Q16611 (Homo sapiens)
Explore Q16611 
Go to UniProtKB:  Q16611
NIH Common Fund Data Resources
PHAROS:  Q16611
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download Ideal Coordinates 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 
  • R-Value Observed: 0.288 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.187α = 90
b = 69.187β = 90
c = 120.601γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
SHARPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

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