Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 12242.36 
• Atom Count: 863 
• Residue Count: 106 
• Unique protein chains: 1

1EW4

CRYSTAL STRUCTURE OF ESCHERICHIA COLI CYAY PROTEIN REVEALS A NOVEL FOLD FOR THE FRATAXIN FAMILY

• DOI: 10.2210/pdb1EW4/pdb

• Classification: UNKNOWN FUNCTION
• Organism(s): Escherichia coli (strain K12)
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2000-04-22 Released: 2000-08-09 
• Deposition Author(s): Suh, S.W., Cho, S., Lee, M.G., Yang, J.K., Lee, J.Y., Song, H.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.4 Å
• R-Value Free: 0.213 
• R-Value Work: 0.188 

Literature

Crystal structure of Escherichia coli CyaY protein reveals a previously unidentified fold for the evolutionarily conserved frataxin family.

Cho, S.J., Lee, M.G., Yang, J.K., Lee, J.Y., Song, H.K., Suh, S.W.

(2000) Proc.Natl.Acad.Sci.USA 97: 8932-8937

• PubMed: 10908679 
• DOI: 10.1073/pnas.160270897
• Also Cited By: 2P1X, 2EFF


• PubMed Abstract: 
  

Friedreich ataxia is an autosomal recessive neurodegenerative disease caused by defects in the FRDA gene, which encodes a mitochondrial protein called frataxin. Frataxin is evolutionarily conserved, with homologs identified in mammals, worms, yeast, and bacteria. The CyaY proteins of gamma-purple bacteria are believed to be closely related to the ancestor of frataxin. In this study, we have determined the crystal structure of the CyaY protein from Escherichia coli at 1.4-A resolution. It reveals a protein fold consisting of a six-stranded antiparallel beta-sheet flanked on one side by two alpha-helices. This fold is likely to be shared by all members of the conserved frataxin family. This study also provides a framework for the interpretation of disease-associated mutations in frataxin and for understanding the possible functions of this protein family.

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Organizational Affiliation: 

Department of Chemistry, Seoul National University, Seoul 151-742, Korea.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
CYAY PROTEIN	A	106	Escherichia coli (strain K12)	Mutation(s): 0  Gene Names: cyaY
Find proteins for P27838 (Escherichia coli (strain K12)) Go to UniProtKB:  P27838

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.4 Å
• R-Value Free: 0.213 
• R-Value Work: 0.188 
• Space Group: P 3₂ 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 44.178	α = 90.00
b = 44.178	β = 90.00
c = 98.286	γ = 120.00

Software Package:

Software Name	Purpose
CNS	refinement
SCALEPACK	data scaling
DENZO	data reduction
SHARP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-04-22 
• Released Date: 2000-08-09 
• Deposition Author(s): Suh, S.W., Cho, S., Lee, M.G., Yang, J.K., Lee, J.Y., Song, H.K.

Revision History 

• Version 1.0: 2000-08-09
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance