1MK3

SOLUTION STRUCTURE OF HUMAN BCL-W PROTEIN

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations,structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Solution structure of human BCL-w: modulation of ligand binding by the C-terminal helix

Denisov, A.Y., Madiraju, M.S., Chen, G., Khadir, A., Beauparlant, P., Attardo, G., Shore, G.C., Gehring, K.

(2003) J Biol Chem 278: 21124-21128

  • DOI: 10.1074/jbc.M301798200
  • Primary Citation of Related Structures:  
    1MK3

  • PubMed Abstract: 

    • The structure of human BCL-w, an anti-apoptotic member of the BCL-2 family, was determined by triple-resonance NMR spectroscopy and molecular modeling. Introduction of a single amino acid substitution (P117V) significantly improved the quality of the NMR spectra obtained ...

    The structure of human BCL-w, an anti-apoptotic member of the BCL-2 family, was determined by triple-resonance NMR spectroscopy and molecular modeling. Introduction of a single amino acid substitution (P117V) significantly improved the quality of the NMR spectra obtained. The cytosolic domain of BCL-w consists of 8 alpha-helices, which adopt a fold similar to that of BCL-xL, BCL-2, and BAX proteins. Pairwise root meant square deviation values were less than 3 A for backbone atoms of structurally equivalent regions. Interestingly, the C-terminal helix alpha8 of BCL-w folds into the BH3-binding hydrophobic cleft of the protein, in a fashion similar to the C-terminal transmembrane helix of BAX. A peptide corresponding to the BH3 region of the pro-apoptotic protein, BID, could displace helix alpha8 from the BCL-w cleft, resulting in helix unfolding. Deletion of helix alpha8 increased binding affinities of BCL-w for BAK and BID BH3-peptides, indicating that this helix competes for peptide binding to the hydrophobic cleft. These results suggest that although the cytosolic domain of BCL-w exhibits an overall structure similar to that of BCL-xL and BCL-2, the unique organization of its C-terminal helix may modulate BCL-w interactions with pro-apoptotic binding partners.

    Organizational Affiliation: 

    Department of Biochemistry and Montreal Joint Center for Structural Biology, McGill University, Montreal, Quebec H3G 1Y6, Canada.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Apoptosis regulator Bcl-WA178Homo sapiensMutation(s): 1 
Gene Names: BCL2L2, BCLW, KIAA0271
UniProt & NIH Common Fund Data Resources
Find proteins for Q92843 (Homo sapiens)
Explore Q92843 
Go to UniProtKB:  Q92843
PHAROS:  Q92843
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ92843
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations,structures with the lowest energy 
  • OLDERADO: 1MK3 Olderado

Structure Validation

View Full Validation Report



View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-06-03
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-27
    Changes: Database references, Derived calculations