Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 20.28 kDa 
• Atom Count: 1357 
• Residue Count: 151 
• Unique protein chains: 2

4GF3

Structure of a SycH-YopH Chaperone-Effector Complex

• DOI: 10.2210/pdb4GF3/pdb

• Classification: Chaperone/Chaperone Effector
• Organism(s): Yersinia pestis, Yersinia enterocolitica
• Mutation(s): No 


• Deposited: 2012-08-02 Released: 2013-03-27 
• Deposition Author(s): Stebbins, C.E., Vujanac, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.245 
• R-Value Work: 0.180 
• R-Value Observed: 0.183 

Literature

Context-dependent protein folding of a virulence peptide in the bacterial and host environments: structure of an SycH-YopH chaperone-effector complex.

Vujanac, M., Stebbins, C.E.

(2013) Acta Crystallogr D Biol Crystallogr 69: 546-554

• PubMed: 23519663 
• DOI: 10.1107/S0907444912051086
• Primary Citation of Related Structures:  
  4GF3


• PubMed Abstract: 
  

Yersinia pestis injects numerous bacterial proteins into host cells through an organic nanomachine called the type 3 secretion system. One such substrate is the tyrosine phosphatase YopH, which requires an interaction with a cognate chaperone in order to be effectively injected. Here, the first crystal structure of a SycH-YopH complex is reported, determined to 1.9 Å resolution. The structure reveals the presence of (i) a nonglobular polypeptide in YopH, (ii) a so-called β-motif in YopH and (iii) a conserved hydrophobic patch in SycH that recognizes the β-motif. Biochemical studies establish that the β-motif is critical to the stability of this complex. Finally, since previous work has shown that the N-terminal portion of YopH adopts a globular fold that is functional in the host cell, aspects of how this polypeptide adopts radically different folds in the host and in the bacterial environments are analysed.

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Organizational Affiliation: 

Laboratory of Structural Microbiology, The Rockefeller University, New York, NY 10065, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative yopH targeting protein	A	141	Yersinia pestis	Mutation(s): 0  Gene Names: sycH, YP_pCD87, YPCD1.95c, Y0082, G4D65_18630, G4D67_19450, GD372_22600
Find proteins for Q7BTX0 (Yersinia pestis) Explore Q7BTX0  Go to UniProtKB:  Q7BTX0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Tyrosine-protein phosphatase yopH	B	43	Yersinia enterocolitica	Mutation(s): 0  Gene Names: yopH, yop51 EC: 3.1.3.48
Find proteins for P15273 (Yersinia enterocolitica) Explore P15273  Go to UniProtKB:  P15273

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.245 
• R-Value Work: 0.180 
• R-Value Observed: 0.183 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 70.525	α = 90
b = 70.525	β = 90
c = 71.517	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-08-02 
• Released Date: 2013-03-27 
Deposition Author(s): Stebbins, C.E., Vujanac, M.

Revision History 

• Version 1.0: 2013-03-27
  Type: Initial release
  
• Version 1.1: 2013-06-19
  Changes: Database references