5C3G

Crystal structure of Bcl-xl bound to BIM-MM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.227 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Hydrocarbon constrained peptides - understanding preorganisation and binding affinity.

Miles, J.A.Yeo, D.J.Rowell, P.Rodriguez-Marin, S.Pask, C.M.Warriner, S.L.Edwards, T.A.Wilson, A.J.

(2016) Chem Sci 7: 3694-3702

  • DOI: https://doi.org/10.1039/c5sc04048e
  • Primary Citation of Related Structures:  
    5C3F, 5C3G

  • PubMed Abstract: 

    The development of constrained peptides represents an emerging strategy to generate peptide based probes and hits for drug-discovery that address challenging protein-protein interactions (PPIs). In this manuscript we report on the use of a novel α-alkenylglycine derived amino acid to synthesise hydrocarbon constrained BH3-family sequences (BIM and BID). Our biophysical and structural analyses illustrate that whilst the introduction of the constraint increases the population of the bioactive α-helical conformation of the peptide in solution, it does not enhance the inhibitory potency against pro-apoptotic Bcl-x L and Mcl-1 PPIs. SPR analyses indicate binding occurs via an induced fit mechanism whilst X-ray analyses illustrate none of the key interactions between the helix and protein are disturbed. The behaviour derives from enthalpy-entropy compensation which may be considered in terms of the ground state energies of the unbound constrained and unconstrained peptides; this has implications for the design of preorganised peptides to target protein-protein interactions.


  • Organizational Affiliation

    School of Chemistry , University of Leeds , Woodhouse Lane , Leeds LS2 9JT , UK . Email: A.J.Wilson@leeds.ac.uk.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Bcl-2-like protein 1,Bcl-2-like protein 1153Mus musculusHomo sapiens
This entity is chimeric
Mutation(s): 0 
Gene Names: Bcl2l1Bcl2lBclxBCL2L1BCL2LBCLX
UniProt & NIH Common Fund Data Resources
Find proteins for Q07817 (Homo sapiens)
Explore Q07817 
Go to UniProtKB:  Q07817
PHAROS:  Q07817
GTEx:  ENSG00000171552 
Find proteins for Q64373 (Mus musculus)
Explore Q64373 
Go to UniProtKB:  Q64373
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsQ07817Q64373
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Bcl-2-like protein 1122Homo sapiensMutation(s): 3 
UniProt & NIH Common Fund Data Resources
Find proteins for O43521 (Homo sapiens)
Explore O43521 
Go to UniProtKB:  O43521
PHAROS:  O43521
GTEx:  ENSG00000153094 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO43521
Sequence Annotations
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
NLE
Query on NLE
B
L-PEPTIDE LINKINGC6 H13 N O2LEU
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.227 
  • Space Group: P 63 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.22α = 90
b = 106.22β = 90
c = 92.76γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
xia2data reduction
xia2data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-04-20
    Type: Initial release
  • Version 1.1: 2017-10-18
    Changes: Database references
  • Version 1.2: 2024-01-10
    Changes: Data collection, Database references, Refinement description