1A38

14-3-3 PROTEIN ZETA BOUND TO R18 PEPTIDE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.35 Å
  • R-Value Free: 0.390 
  • R-Value Work: 0.330 
  • R-Value Observed: 0.330 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

14-3-3zeta binds a phosphorylated Raf peptide and an unphosphorylated peptide via its conserved amphipathic groove.

Petosa, C.Masters, S.C.Bankston, L.A.Pohl, J.Wang, B.Fu, H.Liddington, R.C.

(1998) J Biol Chem 273: 16305-16310

  • DOI: https://doi.org/10.1074/jbc.273.26.16305
  • Primary Citation of Related Structures:  
    1A37, 1A38

  • PubMed Abstract: 

    14-3-3 proteins bind a variety of molecules involved in signal transduction, cell cycle regulation and apoptosis. 14-3-3 binds ligands such as Raf-1 kinase and Bad by recognizing the phosphorylated consensus motif, RSXpSXP, but must bind unphosphorylated ligands, such as glycoprotein Ib and Pseudomonas aeruginosa exoenzyme S, via a different motif. Here we report the crystal structures of the zeta isoform of 14-3-3 in complex with two peptide ligands: a Raf-derived phosphopeptide (pS-Raf-259, LSQRQRSTpSTPNVHMV) and an unphosphorylated peptide derived from phage display (R18, PHCVPRDLSWLDLEANMCLP) that inhibits binding of exoenzyme S and Raf-1. The two peptides bind within a conserved amphipathic groove on the surface of 14-3-3 at overlapping but distinct sites. The phosphoserine of pS-Raf-259 engages a cluster of basic residues (Lys49, Arg56, Arg60, and Arg127), whereas R18 binds via the amphipathic sequence, WLDLE, with its two acidic groups coordinating the same basic cluster. 14-3-3 is dimeric, and its two peptide-binding grooves are arranged in an antiparallel fashion, 30 A apart. The ability of each groove to bind different peptide motifs suggests how 14-3-3 can act in signal transduction by inducing either homodimer or heterodimer formation in its target proteins.


  • Organizational Affiliation

    Department of Biochemistry, University of Leicester, Leicester LE1 7RH, United Kingdom.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
14-3-3 PROTEIN ZETAA,
C [auth B]
245Bos taurusMutation(s): 0 
UniProt
Find proteins for P63103 (Bos taurus)
Explore P63103 
Go to UniProtKB:  P63103
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63103
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
R18 PEPTIDE (PHCVPRDLSWLDLEANMCLP)B [auth P],
D [auth Q]
20N/AMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.35 Å
  • R-Value Free: 0.390 
  • R-Value Work: 0.330 
  • R-Value Observed: 0.330 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 95.52α = 90
b = 95.52β = 90
c = 235.36γ = 120
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-03-02
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Other