4QVE

Crystal structure of Bcl-xL in complex with BID BH3 domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 

wwPDB Validation 3D Report Full Report



Literature

Bh3 induced conformational changes in Bcl-Xl revealed by crystal structure and comparative analysis

Rajan, S.Choi, M.Baek, K.Yoon, H.S.

(2015) Proteins 

  • DOI: 10.1002/prot.24816
  • Primary Citation of Related Structures:  
    4QVE, 4QVF

  • PubMed Abstract: 
  • Apoptosis or programmed cell death is a regulatory process in cells in response to stimuli perturbing physiological conditions. The Bcl-2 family of proteins plays an important role in regulating homeostasis during apoptosis. In the process, the molec ...

    Apoptosis or programmed cell death is a regulatory process in cells in response to stimuli perturbing physiological conditions. The Bcl-2 family of proteins plays an important role in regulating homeostasis during apoptosis. In the process, the molecular interactions among the three members of this family, the pro-apoptotic, anti-apoptotic and BH3-only proteins at the mitochondrial outer membrane define the fate of a cell. Here, we report the crystal structures of the human anti-apoptotic protein Bcl-XL in complex with BH3-only BID(BH3) and BIM(BH3) peptides determined at 2.0 Å and 1.5 Å resolution, respectively. The BH3 peptides bind to the canonical hydrophobic pocket in Bcl-XL and adopt an alpha helical conformation in the bound form. Despite a similar structural fold, a comparison with other BH3 complexes revealed structural differences due to their sequence variations. In the Bcl-XL-BID(BH3) complex we observed a large pocket, in comparison with other BH3 complexes, lined by residues from helices α1, α2, α3, and α5 located adjacent to the canonical hydrophobic pocket. These results suggest that there are differences in the mode of interactions by the BH3 peptides that may translate into functional differences in apoptotic regulation.


    Organizational Affiliation

    Department of Genetic Engineering, College of Life Sciences, Kyung Hee University, Yongin-Si, Gyeonggi-Do, 446-701, Republic of Korea.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Bcl-2-like protein 1A169Homo sapiensMutation(s): 0 
Gene Names: BCL2L1BCL2LBCLX
Find proteins for Q07817 (Homo sapiens)
Explore Q07817 
Go to UniProtKB:  Q07817
NIH Common Fund Data Resources
PHAROS  Q07817
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Peptide from BH3-interacting domain death agonistB34Homo sapiensMutation(s): 0 
Gene Names: BID
Find proteins for P55957 (Homo sapiens)
Explore P55957 
Go to UniProtKB:  P55957
NIH Common Fund Data Resources
PHAROS  P55957
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IMD
Query on IMD

Download CCD File 
B
IMIDAZOLE
C3 H5 N2
RAXXELZNTBOGNW-UHFFFAOYSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.76α = 90
b = 63.76β = 90
c = 187.652γ = 120
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-06-10
    Type: Initial release