5D3F

Crystal structure of human 14-3-3 zeta in complex with CFTR R-domain peptide pS753-pS768 and stabilizer fusicoccin-A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.74 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.246 
  • R-Value Observed: 0.248 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Characterization and small-molecule stabilization of the multisite tandem binding between 14-3-3 and the R domain of CFTR.

Stevers, L.M.Lam, C.V.Leysen, S.F.Meijer, F.A.van Scheppingen, D.S.de Vries, R.M.Carlile, G.W.Milroy, L.G.Thomas, D.Y.Brunsveld, L.Ottmann, C.

(2016) Proc Natl Acad Sci U S A 113: E1152-E1161

  • DOI: 10.1073/pnas.1516631113
  • Primary Citation of Related Structures:  
    5D2D, 5D3E, 5D3F

  • PubMed Abstract: 
  • Cystic fibrosis is a fatal genetic disease, most frequently caused by the retention of the CFTR (cystic fibrosis transmembrane conductance regulator) mutant protein in the endoplasmic reticulum (ER). The binding of the 14-3-3 protein to the CFTR regu ...

    Cystic fibrosis is a fatal genetic disease, most frequently caused by the retention of the CFTR (cystic fibrosis transmembrane conductance regulator) mutant protein in the endoplasmic reticulum (ER). The binding of the 14-3-3 protein to the CFTR regulatory (R) domain has been found to enhance CFTR trafficking to the plasma membrane. To define the mechanism of action of this protein-protein interaction, we have examined the interaction in vitro. The disordered multiphosphorylated R domain contains nine different 14-3-3 binding motifs. Furthermore, the 14-3-3 protein forms a dimer containing two amphipathic grooves that can potentially bind these phosphorylated motifs. This results in a number of possible binding mechanisms between these two proteins. Using multiple biochemical assays and crystal structures, we show that the interaction between them is governed by two binding sites: The key binding site of CFTR (pS768) occupies one groove of the 14-3-3 dimer, and a weaker, secondary binding site occupies the other binding groove. We show that fusicoccin-A, a natural-product tool compound used in studies of 14-3-3 biology, can stabilize the interaction between 14-3-3 and CFTR by selectively interacting with a secondary binding motif of CFTR (pS753). The stabilization of this interaction stimulates the trafficking of mutant CFTR to the plasma membrane. This definition of the druggability of the 14-3-3-CFTR interface might offer an approach for cystic fibrosis therapeutics.


    Organizational Affiliation

    Laboratory of Chemical Biology, Department of Biomedical Engineering, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands; Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands; Department of Chemistry, University of Duisburg-Essen, 45141 Essen, Germany c.ottmann@tue.nl.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
14-3-3 protein zeta/deltaAB230Homo sapiensMutation(s): 0 
Gene Names: YWHAZ
Find proteins for P63104 (Homo sapiens)
Explore P63104 
Go to UniProtKB:  P63104
NIH Common Fund Data Resources
PHAROS  P63104
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Cystic fibrosis transmembrane conductance regulatorC28Homo sapiensMutation(s): 0 
Gene Names: CFTRABCC7
EC: 3.6.3.49 (PDB Primary Data), 5.6.1.6 (UniProt)
Find proteins for P13569 (Homo sapiens)
Explore P13569 
Go to UniProtKB:  P13569
NIH Common Fund Data Resources
PHAROS  P13569
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FSC
Query on FSC

Download CCD File 
B
FUSICOCCIN
C36 H56 O12
KXTYBXCEQOANSX-WYKQKOHHSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
CL-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.74 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.246 
  • R-Value Observed: 0.248 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.607α = 90
b = 110.166β = 90
c = 132.604γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
MOLREPphasing
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-03-16
    Type: Initial release
  • Version 1.1: 2019-03-13
    Changes: Advisory, Data collection, Derived calculations