3IQV

Crystal Structure of human 14-3-3 sigma in Complex with Raf1 peptide (6mer) and stabilisator Fusicoccin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.153 
  • R-Value Work: 0.123 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Impaired binding of 14-3-3 to C-RAF in Noonan syndrome suggests new approaches in diseases with increased Ras signaling.

Molzan, M.Schumacher, B.Ottmann, C.Baljuls, A.Polzien, L.Weyand, M.Thiel, P.Rose, R.Rose, M.Kuhenne, P.Kaiser, M.Rapp, U.R.Kuhlmann, J.Ottmann, C.

(2010) Mol.Cell.Biol. 30: 4698-4711

  • DOI: 10.1128/MCB.01636-09
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The Ras-RAF-mitogen-activated protein kinase (Ras-RAF-MAPK) pathway is overactive in many cancers and in some developmental disorders. In one of those disorders, namely, Noonan syndrome, nine activating C-RAF mutations cluster around Ser(259), a regu ...

    The Ras-RAF-mitogen-activated protein kinase (Ras-RAF-MAPK) pathway is overactive in many cancers and in some developmental disorders. In one of those disorders, namely, Noonan syndrome, nine activating C-RAF mutations cluster around Ser(259), a regulatory site for inhibition by 14-3-3 proteins. We show that these mutations impair binding of 14-3-3 proteins to C-RAF and alter its subcellular localization by promoting Ras-mediated plasma membrane recruitment of C-RAF. By presenting biophysical binding data, the 14-3-3/C-RAFpS(259) crystal structure, and cellular analyses, we indicate a mechanistic link between a well-described human developmental disorder and the impairment of a 14-3-3/target protein interaction. As a broader implication of these findings, modulating the C-RAFSer(259)/14-3-3 protein-protein interaction with a stabilizing small molecule may yield a novel potential approach for treatment of diseases resulting from an overactive Ras-RAF-MAPK pathway.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
14-3-3 protein sigma
A
236Homo sapiensMutation(s): 0 
Gene Names: SFN (HME1)
Find proteins for P31947 (Homo sapiens)
Go to Gene View: SFN
Go to UniProtKB:  P31947
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
6-mer peptide from RAF proto-oncogene serine/threonine-protein kinase
P
6Homo sapiensMutation(s): 0 
Gene Names: RAF1 (RAF)
EC: 2.7.11.1
Find proteins for P04049 (Homo sapiens)
Go to Gene View: RAF1
Go to UniProtKB:  P04049
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FSC
Query on FSC

Download SDF File 
Download CCD File 
A
FUSICOCCIN
C36 H56 O12
KXTYBXCEQOANSX-WYKQKOHHSA-N
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
CSO
Query on CSO
A
L-PEPTIDE LINKINGC3 H7 N O3 SCYS
SEP
Query on SEP
P
L-PEPTIDE LINKINGC3 H8 N O6 PSER
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FSCKd: 6600 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.153 
  • R-Value Work: 0.123 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 82.370α = 90.00
b = 111.750β = 90.00
c = 62.490γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-09-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2013-11-27
    Type: Database references
  • Version 1.3: 2017-11-01
    Type: Refinement description