Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 38.16 kDa 
• Atom Count: 2671 
• Modelled Residue Count: 325 
• Deposited Residue Count: 328 
• Unique protein chains: 1

1ZYL

Crystal Structure of Hypothetical Protein YihE from Escherichia coli

• PDB DOI: 10.2210/pdb1ZYL/pdb

• Classification: STRUCTURAL GENOMICS, UNKNOWN FUNCTION
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2005-06-10 Released: 2006-09-19 
• Deposition Author(s): Zheng, J., Jia, Z., Montreal-Kingston Bacterial Structural Genomics Initiative (BSGI)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.279 
• R-Value Work: 0.215 
• R-Value Observed: 0.215 

Literature

Crystal structure of a novel prokaryotic Ser/Thr kinase and its implication in the Cpx stress response pathway.

Zheng, J., He, C., Singh, V.K., Martin, N.L., Jia, Z.

(2007) Mol Microbiol 63: 1360-1371

• PubMed: 17302814 
• DOI: 10.1111/j.1365-2958.2007.05611.x
• Primary Citation of Related Structures:  
  1ZYL


• PubMed Abstract: 
  

The Cpx signalling system of Escherichia coli and Salmonella enterica senses extracytoplasmic stress and controls expression of factors that allow the bacterium to adapt to these stressors and thereby enhance survival. Many of the Cpx-responsive genes products are of unknown function. We determined the crystal structure of one of these gene products, called YihE in E. coli, which exhibits a eukaryotic kinase fold. Functional assays established that both YihE and the S. enterica YihE homologue, RdoA, undergo autophosphorylation and phosphorylate protein substrates at Ser/Thr residues in vitro, demonstrating that YihE/RdoA is a novel Ser/Thr protein kinase in prokaryotic cells. Phenotypic analysis of yihE/rdoA null strains indicates that this kinase is most abundant in stationary phase, and is important for long-term cell survival and for expression of surface appendages in both a Cpx-independent and -dependent manner. YihE/RdoA is therefore a previously unknown kinase component of a new type of bacterial phosphorelay mechanism, adding kinase activity as another response to the Cpx sensing system that functions to maintain cellular homeostasis.

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Organizational Affiliation: 

Department of Biochemistry, Queen's University, Kingston, Ontario, K7L 3N6, Canada.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hypothetical protein yihE	A	328	Escherichia coli	Mutation(s): 0  EC: 2.7.11.1
UniProt
Find proteins for P0C0K3 (Escherichia coli (strain K12)) Explore P0C0K3  Go to UniProtKB:  P0C0K3

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.279 
• R-Value Work: 0.215 
• R-Value Observed: 0.215 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 90.974	α = 90
b = 90.974	β = 90
c = 110.42	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-06-10 
• Released Date: 2006-09-19 
Deposition Author(s): Zheng, J., Jia, Z., Montreal-Kingston Bacterial Structural Genomics Initiative (BSGI)

Revision History  

• Version 1.0: 2006-09-19
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance