5AGX

Bcl-2 alpha beta-1 LINEAR complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.24 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Alpha Beta Peptide Foldamers Targeting Intracellular Protein-Protein Interactions with Activity on Living Cells

Checco, J.W., Lee, E.F., Evangelista, M., Sleebs, N., Rodgers, K., Pettikiriarachchi, A., Kershaw, N., Eddinger, G.A., Belair, D.G., Wilson, J.L., Eller, C.H., Raines, R.T., Murphy, W.L., Smith, B.J., Gellman, S.H., Fairlie, W.D.

(2015) J Am Chem Soc 137: 11365

  • DOI: 10.1021/jacs.5b05896
  • Primary Citation of Related Structures:  
    5AGX, 5AGW

  • PubMed Abstract: 

    • Peptides can be developed as effective antagonists of protein-protein interactions, but conventional peptides (i.e., oligomers of l-α-amino acids) suffer from significant limitations in vivo. Short half-lives due to rapid proteolytic degradation and an inability to cross cell membranes often preclude biological applications of peptides ...

    Peptides can be developed as effective antagonists of protein-protein interactions, but conventional peptides (i.e., oligomers of l-α-amino acids) suffer from significant limitations in vivo. Short half-lives due to rapid proteolytic degradation and an inability to cross cell membranes often preclude biological applications of peptides. Oligomers that contain both α- and β-amino acid residues ("α/β-peptides") manifest decreased susceptibility to proteolytic degradation, and when properly designed these unnatural oligomers can mimic the protein-recognition properties of analogous "α-peptides". This report documents an extension of the α/β-peptide approach to target intracellular protein-protein interactions. Specifically, we have generated α/β-peptides based on a "stapled" Bim BH3 α-peptide, which contains a hydrocarbon cross-link to enhance α-helix stability. We show that a stapled α/β-peptide can structurally and functionally mimic the parent stapled α-peptide in its ability to enter certain types of cells and block protein-protein interactions associated with apoptotic signaling. However, the α/β-peptide is nearly 100-fold more resistant to proteolysis than is the parent stapled α-peptide. These results show that backbone modification, a strategy that has received relatively little attention in terms of peptide engineering for biomedical applications, can be combined with more commonly deployed peripheral modifications such as side chain cross-linking to produce synergistic benefits.

    Organizational Affiliation: 

    Department of Medical Biology, University of Melbourne , Parkville, Victoria 3010, Australia.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
APOPTOSIS REGULATOR BCL-2, BCL-2-LIKE PROTEIN 1, APOPTOSIS REGULATOR BCL-2A166Homo sapiensMutation(s): 0 
Gene Names: BCL2L1, BCL2L, BCLX, BCL2
Find proteins for Q07817 (Homo sapiens)
Explore Q07817 
Go to UniProtKB:  Q07817
NIH Common Fund Data Resources
PHAROS:  Q07817
GTEx:  ENSG00000171552
Find proteins for P10415 (Homo sapiens)
Explore P10415 
Go to UniProtKB:  P10415
NIH Common Fund Data Resources
PHAROS:  P10415
GTEx:  ENSG00000171791
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
APOPTOSIS REGULATOR BCL-2, BCL-2-LIKE PROTEIN 1, APOPTOSIS REGULATOR BCL-2B166Homo sapiensMutation(s): 0 
Gene Names: BCL2L1, BCL2L, BCLX, BCL2
Find proteins for Q07817 (Homo sapiens)
Explore Q07817 
Go to UniProtKB:  Q07817
NIH Common Fund Data Resources
PHAROS:  Q07817
GTEx:  ENSG00000171552
Find proteins for P10415 (Homo sapiens)
Explore P10415 
Go to UniProtKB:  P10415
NIH Common Fund Data Resources
PHAROS:  P10415
GTEx:  ENSG00000171791
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
BCL-2-LIKE PROTEIN 11C, D22Homo sapiensMutation(s): 5 
Gene Names: BCL2L11, BIM
Find proteins for O43521 (Homo sapiens)
Explore O43521 
Go to UniProtKB:  O43521
NIH Common Fund Data Resources
PHAROS:  O43521
GTEx:  ENSG00000153094
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.24 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.054α = 90
b = 86.054β = 90
c = 108.739γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-09-09
    Type: Initial release
  • Version 1.1: 2015-09-23
    Changes: Database references