Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 60.06 kDa 
• Atom Count: 3727 
• Residue Count: 481 
• Unique protein chains: 2

2BTP

14-3-3 Protein Theta (Human) Complexed to Peptide

• DOI: 10.2210/pdb2BTP/pdb

• Classification: SIGNALING PROTEIN/PEPTIDE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2005-06-05 Released: 2005-06-28 
• Deposition Author(s): Elkins, J.M., Johansson, A.C.E., Smee, C., Yang, X., Sundstrom, M., Edwards, A., Arrowsmith, C., Doyle, D.A., Structural Genomics Consortium (SGC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.259 
• R-Value Work: 0.206 
• R-Value Observed: 0.210 

Literature

Structural Basis for Protein-Protein Interactions in the 14-3-3 Protein Family.

Yang, X., Lee, W.H., Sobott, F., Papagrigoriou, E., Robinson, C.V., Grossmann, J.G., Sundstrom, M., Doyle, D.A., Elkins, J.M.

(2006) Proc Natl Acad Sci U S A 103: 17237

• PubMed: 17085597 
• DOI: 10.1073/pnas.0605779103
• Primary Citation of Related Structures:  
  2C23, 2BQ0, 2BR9, 2C63, 2BTP, 2C74


• PubMed Abstract: 
  

The seven members of the human 14-3-3 protein family regulate a diverse range of cell signaling pathways by formation of protein-protein complexes with signaling proteins that contain phosphorylated Ser/Thr residues within specific sequence motifs. Previously, crystal structures of three 14-3-3 isoforms (zeta, sigma, and tau) have been reported, with structural data for two isoforms deposited in the Protein Data Bank (zeta and sigma). In this study, we provide structural detail for five 14-3-3 isoforms bound to ligands, providing structural coverage for all isoforms of a human protein family. A comparative structural analysis of the seven 14-3-3 proteins revealed specificity determinants for binding of phosphopeptides in a specific orientation, target domain interaction surfaces and flexible adaptation of 14-3-3 proteins through domain movements. Specifically, the structures of the beta isoform in its apo and peptide bound forms showed that its binding site can exhibit structural flexibility to facilitate binding of its protein and peptide partners. In addition, the complex of 14-3-3 beta with the exoenzyme S peptide displayed a secondary structural element in the 14-3-3 peptide binding groove. These results show that the 14-3-3 proteins are adaptable structures in which internal flexibility is likely to facilitate recognition and binding of their interaction partners.

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Organizational Affiliation: 

Structural Genomics Consortium, University of Oxford, Botnar Research Centre, Oxford OX3 7LD, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
14-3-3 PROTEIN TAU	A, B	256	Homo sapiens	Mutation(s): 0  Gene Names: YWHAQ
Find proteins for P27348 (Homo sapiens) Explore P27348  Go to UniProtKB:  P27348
NIH Common Fund Data Resources
PHAROS  P27348 GTEx  ENSG00000134308

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
CONSENSUS PEPTIDE FOR 14-3-3 PROTEINS	P, Q	6	Homo sapiens	Mutation(s): 0

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
SEP	P,Q	L-PEPTIDE LINKING	C3 H8 N O6 P		SER

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.259 
• R-Value Work: 0.206 
• R-Value Observed: 0.210 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 61.307	α = 90
b = 85.964	β = 112.67
c = 64.666	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-06-05 
• Released Date: 2005-06-28 
Deposition Author(s): Elkins, J.M., Johansson, A.C.E., Smee, C., Yang, X., Sundstrom, M., Edwards, A., Arrowsmith, C., Doyle, D.A., Structural Genomics Consortium (SGC)

Revision History 

• Version 1.0: 2005-06-28
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-05-24
  Changes: Structure summary
• Version 1.4: 2018-01-31
  Changes: Source and taxonomy
• Version 1.5: 2018-04-04
  Changes: Data collection