Experimental Data Snapshot

  • Resolution: 2.60 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.189 

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Structure of a 14-3-3 protein and implications for coordination of multiple signalling pathways

Xiao, B.Smerdon, S.J.Jones, D.H.Dodson, G.G.Soneji, Y.Aitken, A.Gamblin, S.J.

(1995) Nature 376: 188-191

  • DOI: https://doi.org/10.1038/376188a0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    A broad range of organisms and tissues contain 14-3-3 proteins, which have been associated with many diverse functions including critical roles in signal transduction pathways, exocytosis and cell cycle regulation. We report here the crystal structure of the human T-cell 14-3-3 isoform (tau) dimer at 2.6 A resolution. Each monomer (Mr 28K) is composed of an unusual arrangement of nine antiparallel alpha-helices organized as two structural domains. The dimer creates a large, negatively charged channel approximately 35 A broad, 35 A wide and 20 A deep. Overall, invariant residues line the interior of this channel whereas the more variable residues are distributed on the outer surface. At the base of this channel is a 16-residue segment of 14-3-3 which has been implicated in the binding of 14-3-3 to protein kinase C.

  • Organizational Affiliation

    Division of Protein Structure, National Institute for Medical Research, Mill Hill, London, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
14-3-3 protein theta
A, B
245Homo sapiensMutation(s): 0 
Gene Names: YWHAQ
UniProt & NIH Common Fund Data Resources
Find proteins for P27348 (Homo sapiens)
Explore P27348 
Go to UniProtKB:  P27348
PHAROS:  P27348
GTEx:  ENSG00000134308 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP27348
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.60 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.29α = 90
b = 79.3β = 90
c = 101γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-03-23
    Type: Initial release
  • Version 1.1: 2024-05-08
    Changes: Data collection, Database references