4N7G

Crystal structure of 14-3-3zeta in complex with a peptide derived from ExoS

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.190 

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


Literature

Constrained peptides with target-adapted cross-links as inhibitors of a pathogenic protein-protein interaction.

Glas, A., Bier, D., Hahne, G., Rademacher, C., Ottmann, C., Grossmann, T.N.

(2014) Angew Chem Int Ed Engl 53: 2489-2493

  • DOI: 10.1002/anie.201310082
  • Primary Citation of Related Structures:  
    4N7Y, 4N84, 4N7G

  • PubMed Abstract: 

    • Bioactive conformations of peptides can be stabilized by macrocyclization, resulting in increased target affinity and activity. Such macrocyclic peptides proved useful as modulators of biological functions, in particular as inhibitors of protein-protein interactions (PPI) ...

    Bioactive conformations of peptides can be stabilized by macrocyclization, resulting in increased target affinity and activity. Such macrocyclic peptides proved useful as modulators of biological functions, in particular as inhibitors of protein-protein interactions (PPI). However, most peptide-derived PPI inhibitors involve stabilized α-helices, leaving a large number of secondary structures unaddressed. Herein, we present a rational approach towards stabilization of an irregular peptide structure, using hydrophobic cross-links that replace residues crucially involved in target binding. The molecular basis of this interaction was elucidated by X-ray crystallography and isothermal titration calorimetry. The resulting cross-linked peptides inhibit the interaction between human adaptor protein 14-3-3 and virulence factor exoenzyme S. Taking into consideration that irregular peptide structures participate widely in PPIs, this approach provides access to novel peptide-derived inhibitors.

    Organizational Affiliation: 

    Chemical Genomics Centre of the Max Planck Society, Otto-Hahn-Strasse 15, 44227 Dortmund (Germany).



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
14-3-3 protein zeta/delta A235Homo sapiensMutation(s): 0 
Gene Names: NP_001129171.1, YWHAZ
Find proteins for P63104 (Homo sapiens)
Explore P63104 
Go to UniProtKB:  P63104
NIH Common Fund Data Resources
PHAROS:  P63104
GTEx:  ENSG00000164924
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Exoenzyme S B11Pseudomonas aeruginosaMutation(s): 0 
Gene Names: exoS
Find proteins for Q93SQ3 (Pseudomonas aeruginosa)
Explore Q93SQ3 
Go to UniProtKB:  Q93SQ3
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.190 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.42α = 90
b = 105.42β = 90
c = 114.28γ = 120
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata scaling
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-02-19
    Type: Initial release
  • Version 1.1: 2014-03-12
    Changes: Database references