5UA4

Crystal structure of A179L:Bid BH3 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structural Insight into African Swine Fever Virus A179L-Mediated Inhibition of Apoptosis.

Banjara, S.Caria, S.Dixon, L.K.Hinds, M.G.Kvansakul, M.

(2017) J. Virol. 91: --

  • DOI: 10.1128/JVI.02228-16
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Programmed cell death is a tightly controlled process critical for the removal of damaged or infected cells. Pro- and antiapoptotic proteins of the Bcl-2 family are pivotal mediators of this process. African swine fever virus (ASFV) is a large DNA vi ...

    Programmed cell death is a tightly controlled process critical for the removal of damaged or infected cells. Pro- and antiapoptotic proteins of the Bcl-2 family are pivotal mediators of this process. African swine fever virus (ASFV) is a large DNA virus, the only member of the Asfarviridae family, and harbors A179L, a putative Bcl-2 like protein. A179L has been shown to bind to several proapoptotic Bcl-2 proteins; however, the hierarchy of binding and the structural basis for apoptosis inhibition are currently not understood. We systematically evaluated the ability of A179L to bind proapoptotic Bcl-2 family members and show that A179L is the first antiapoptotic Bcl-2 protein to bind to all major death-inducing mammalian Bcl-2 proteins. We then defined the structural basis for apoptosis inhibition of A179L by determining the crystal structures of A179L bound to both Bid and Bax BH3 motifs. Our findings provide a mechanistic understanding for the potent antiapoptotic activity of A179L by identifying it as the first panprodeath Bcl-2 binder and serve as a platform for more-detailed investigations into the role of A179L during ASFV infection.IMPORTANCE Numerous viruses have acquired strategies to subvert apoptosis by encoding proteins capable of sequestering proapoptotic host proteins. African swine fever virus (ASFV), a large DNA virus and the only member of the Asfarviridae family, encodes the protein A179L, which functions to prevent apoptosis. We show that A179L is unusual among antiapoptotic Bcl-2 proteins in being able to physically bind to all core death-inducing mammalian Bcl-2 proteins. Currently, little is known regarding the molecular interactions between A179L and the proapoptotic Bcl-2 members. Using the crystal structures of A179L bound to two of the identified proapoptotic Bcl-2 proteins, Bid and Bax, we now provide a three-dimensional (3D) view of how A179L sequesters host proapoptotic proteins, which is crucial for subverting premature host cell apoptosis.


    Organizational Affiliation

    Department of Biochemistry & Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
5-HL
A
153African swine fever virus (strain Badajoz 1971 Vero-adapted)Mutation(s): 0 
Find proteins for P42485 (African swine fever virus (strain Badajoz 1971 Vero-adapted))
Go to UniProtKB:  P42485
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BH3-interacting domain death agonist
B
34Sus scrofaMutation(s): 0 
Gene Names: BID
Find proteins for Q4JHS0 (Sus scrofa)
Go to Gene View: BID
Go to UniProtKB:  Q4JHS0
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.216 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 67.761α = 90.00
b = 48.778β = 104.98
c = 56.535γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
xia2data reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Australian Research CouncilAustraliaFT130101349
National Health and Medical Research Council (Australia)AustraliaAPP1007918

Revision History 

  • Version 1.0: 2017-01-04
    Type: Initial release
  • Version 1.1: 2017-01-18
    Type: Database references
  • Version 1.2: 2017-03-15
    Type: Database references
  • Version 1.3: 2017-09-20
    Type: Author supporting evidence, Data collection
  • Version 1.4: 2017-11-01
    Type: Author supporting evidence