4FJ3

14-3-3 isoform zeta in complex with a diphoyphorylated C-RAF peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.159 
  • R-Value Observed: 0.161 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Synergistic binding of the phosphorylated S233- and S259-binding sites of C-RAF to one 14-3-3zeta dimer

Molzan, M.Ottmann, C.

(2012) J Mol Biol 423: 486-495

  • DOI: https://doi.org/10.1016/j.jmb.2012.08.009
  • Primary Citation of Related Structures:  
    4FJ3

  • PubMed Abstract: 

    C-RAF kinase is a central component of the Ras-RAF-MEK (mitogen-activated protein kinase/extracellular signal-regulated kinase)-ERK (extracellular signal-regulated kinase) pathway, which has been shown to be activated in 30% of human tumors. 14-3-3 proteins inactivate C-RAF by binding to the two N-terminal phosphorylation-dependent binding sites surrounding S233 and S259. 14-3-3 proteins can bind two target sequences located on one polypeptide chain simultaneously, thereby increasing binding affinity compared to single-site binding and possibly allowing regulated 14-3-3 binding through gatekeeper phosphorylation. To date, it was unclear whether 14-3-3 proteins can bind the two N-terminal phosphorylation-dependent binding sites of C-RAF simultaneously. Fluorescence polarization using phosphorylated peptides demonstrated that S233 is the low-affinity and S259 is the high-affinity binding site, while simultaneous engagement of both sites by 14-3-3ζ enhances affinity compared to single-site binding. Determination of a 1:1 stoichiometry for the di-phosphorylated peptide binding to one 14-3-3ζ dimer with isothermal titration calorimetry was supported by the crystal structure of the 14-3-3ζ/C-RAFpS233,pS259 complex. Cellular localization studies validate the significance of these sites for cytoplasmic retention of C-RAF, suggesting an extended mechanism of RAF regulation by 14-3-3 proteins.


  • Organizational Affiliation

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


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
14-3-3 protein zeta/delta
A, B
235Homo sapiensMutation(s): 0 
Gene Names: YWHAZ
UniProt & NIH Common Fund Data Resources
Find proteins for P63104 (Homo sapiens)
Explore P63104 
Go to UniProtKB:  P63104
PHAROS:  P63104
GTEx:  ENSG00000164924 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63104
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
RAF proto-oncogene serine/threonine-protein kinaseC [auth P]36Homo sapiensMutation(s): 0 
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for P04049 (Homo sapiens)
Explore P04049 
Go to UniProtKB:  P04049
PHAROS:  P04049
GTEx:  ENSG00000132155 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04049
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
SEP
Query on SEP
C [auth P]L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.159 
  • R-Value Observed: 0.161 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.14α = 90
b = 102.43β = 90
c = 113.89γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-09-05
    Type: Initial release
  • Version 1.1: 2013-07-10
    Changes: Database references