Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 4-mer - A2B1C1 

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

Macromolecule Content

• Total Structure Weight: 57.63 kDa 
• Atom Count: 3,948 
• Modelled Residue Count: 458 
• Deposited Residue Count: 506 
• Unique protein chains: 2

 1QJA

14-3-3 ZETA/PHOSPHOPEPTIDE COMPLEX (MODE 2)

• PDB DOI:  https://doi.org/10.2210/pdb1QJA/pdb

• Classification: KINASE INHIBITOR/PEPTIDE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli DH5[alpha]
• Mutation(s): No 


• Deposited: 1999-06-23 Released: 1999-09-15 
• Deposition Author(s): Rittinger, K., Budman, J., Xu, J., Volinia, S., Cantley, L.C., Smerdon, S.J., Gamblin, S.J., Yaffe, M.B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.275 
• R-Value Work: 0.214 

Literature

Structural Analysis of 14-3-3 Phosphopeptide Complexes Identifies a Dual Role for the Nuclear Export Signal of 14-3-3 in Ligand Binding

Rittinger, K., Budman, J., Xu, J., Volinia, S., Cantley, L.C., Smerdon, S.J., Gamblin, S.J., Yaffe, M.B.

(1999) Mol Cell 4: 153

• PubMed: 10488331 
• DOI: https://doi.org/10.1016/s1097-2765(00)80363-9
• Primary Citation of Related Structures:  
  1QJA, 1QJB


• PubMed Abstract: 
  

We have solved the high-resolution X-ray structure of 14-3-3 bound to two different phosphoserine peptides, representing alternative substrate-binding motifs. These structures reveal an evolutionarily conserved network of peptide-protein interactions within all 14-3-3 isotypes, explain both binding motifs, and identify a novel intrachain phosphorylation-mediated loop structure in one of the peptides. A 14-3-3 mutation disrupting Raf signaling alters the ligand-binding cleft, selecting a different phosphopeptide-binding motif and different substrates than the wild-type protein. Many 14-3-3: peptide contacts involve a C-terminal amphipathic alpha helix containing a putative nuclear export signal, implicating this segment in both ligand and Crm1 binding. Structural homology between the 14-3-3 NES structure and those within I kappa B alpha and p53 reveals a conserved topology recognized by the Crm1 nuclear export machinery.

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Organizational Affiliation: 

Divison of Protein Structure, National Institute for Medical Research, London, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
14-3-3 PROTEIN ZETA	A, B	245	Homo sapiens	Mutation(s): 0  Gene Names: YWHAZ
UniProt & NIH Common Fund Data Resources
Find proteins for P63104 (Homo sapiens) Explore P63104  Go to UniProtKB:  P63104
PHAROS:  P63104

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
PHOSPHOPEPTIDE	C [auth Q], D [auth R]	8	Homo sapiens	Mutation(s): 0

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.275 
• R-Value Work: 0.214 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.38	α = 90
b = 70.956	β = 90
c = 130.56	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-09-15 
Deposition Author(s): Rittinger, K., Budman, J., Xu, J., Volinia, S., Cantley, L.C., Smerdon, S.J., Gamblin, S.J., Yaffe, M.B.

Revision History  

• Version 1.0: 1999-09-15
  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: 2018-02-28
  Changes: Source and taxonomy