3BL2

Crystal Structure of M11, the BCL-2 Homolog of Murine Gamma-herpesvirus 68, Complexed with Mouse Beclin1 (residues 106-124)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural and Biochemical Bases for the Inhibition of Autophagy and Apoptosis by Viral BCL-2 of Murine gamma-Herpesvirus 68

Ku, B.Woo, J.-S.Liang, C.Lee, K.-H.Hong, H.-S.E, X.Kim, K.-S.Jung, J.U.Oh, B.-H.

(2008) Plos Pathog. 4: e25-e25

  • DOI: 10.1371/journal.ppat.0040025
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • All gammaherpesviruses express homologues of antiapoptotic B-cell lymphoma-2 (BCL-2) to counter the clearance of infected cells by host antiviral defense machineries. To gain insights into the action mechanisms of these viral BCL-2 proteins, we carri ...

    All gammaherpesviruses express homologues of antiapoptotic B-cell lymphoma-2 (BCL-2) to counter the clearance of infected cells by host antiviral defense machineries. To gain insights into the action mechanisms of these viral BCL-2 proteins, we carried out structural and biochemical analyses on the interactions of M11, a viral BCL-2 of murine gamma-herpesvirus 68, with a fragment of proautophagic Beclin1 and BCL-2 homology 3 (BH3) domain-containing peptides derived from an array of proapoptotic BCL-2 family proteins. Mainly through hydrophobic interactions, M11 bound the BH3-like domain of Beclin1 with a dissociation constant of 40 nanomole, a markedly tighter affinity compared to the 1.7 micromolar binding affinity between cellular BCL-2 and Beclin1. Consistently, M11 inhibited autophagy more efficiently than BCL-2 in NIH3T3 cells. M11 also interacted tightly with a BH3 domain peptide of BAK and those of the upstream BH3-only proteins BIM, BID, BMF, PUMA, and Noxa, but weakly with that of BAX. These results collectively suggest that M11 potently inhibits Beclin1 in addition to broadly neutralizing the proapoptotic BCL-2 family in a similar but distinctive way from cellular BCL-2, and that the Beclin1-mediated autophagy may be a main target of the virus.


    Organizational Affiliation

    Division of Molecular and Life Sciences, Center for Biomolecular Recognition, Pohang University of Science and Technology, Pohang, Kyungbuk, Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
V-bcl-2
A, B
131Murid herpesvirus 4Mutation(s): 0 
Gene Names: vBCL2
Find proteins for P89884 (Murid herpesvirus 4)
Go to UniProtKB:  P89884
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beclin-1
C, D
19Mus musculusMutation(s): 0 
Gene Names: Becn1
Find proteins for O88597 (Mus musculus)
Go to UniProtKB:  O88597
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.204 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 42.863α = 90.00
b = 53.601β = 107.54
c = 73.586γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
DENZOdata reduction
HKL-2000data collection
HKL-2000data reduction
PDB_EXTRACTdata extraction
CNSrefinement
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-02-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description