Biological Assembly 1  

 3D View: Structure | Electron Density

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

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

Macromolecule Content

• Total Structure Weight: 12.21 kDa 
• Atom Count: 748 
• Residue Count: 95 
• Unique protein chains: 1

2Y2T

E. coli CsgC in reduced form

• DOI: 10.2210/pdb2Y2T/pdb

• Classification: CHAPERONE
• Organism(s): Escherichia coli O157:H7 str. EC4115
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2010-12-16 Released: 2011-09-21 
• Deposition Author(s): Taylor, J.D., Salgado, P.S., Cota, E., Matthews, S.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.273 
• R-Value Work: 0.237 
• R-Value Observed: 0.238 

Literature

Atomic Resolution Insights Into Curli Fiber Biogenesis.

Taylor, J.D., Zhou, Y., Salgado, P.S., Patwardhan, A., Mcguffie, M., Pape, T., Grabe, G., Ashman, E., Constable, S.C., Simpson, P.J., Lee, W.C., Cota, E., Chapman, M.R., Matthews, S.J.

(2011) Structure 19: 1307

• PubMed: 21893289 
• DOI: 10.1016/j.str.2011.05.015
• Structures With Same Primary Citation


• PubMed Abstract: 
  

Bacteria produce functional amyloid fibers called curli in a controlled, noncytotoxic manner. These extracellular fimbriae enable biofilm formation and promote pathogenicity. Understanding curli biogenesis is important for appreciating microbial lifestyles and will offer clues as to how disease-associated human amyloid formation might be ameliorated. Proteins encoded by the curli specific genes (csgA-G) are required for curli production. We have determined the structure of CsgC and derived the first structural model of the outer-membrane subunit translocator CsgG. Unexpectedly, CsgC is related to the N-terminal domain of DsbD, both in structure and oxido-reductase capability. Furthermore, we show that CsgG belongs to the nascent class of helical outer-membrane macromolecular exporters. A cysteine in a CsgG transmembrane helix is a potential target of CsgC, and mutation of this residue influences curli assembly. Our study provides the first high-resolution structural insights into curli biogenesis.

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Organizational Affiliation: 

Division of Molecular Biosciences, Faculty of Natural Sciences, Imperial College London, London, SW7 2AZ, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
CURLI PRODUCTION PROTEIN CSGC	A	110	Escherichia coli O157:H7 str. EC4115	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.273 
• R-Value Work: 0.237 
• R-Value Observed: 0.238 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 36.972	α = 90
b = 80.549	β = 90
c = 70.563	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
d*TREK	data reduction
d*TREK	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-12-16 
• Released Date: 2011-09-21 
Deposition Author(s): Taylor, J.D., Salgado, P.S., Cota, E., Matthews, S.J.

Revision History 

• Version 1.0: 2011-09-21
  Type: Initial release
  
• Version 1.1: 2014-03-12
  Changes: Source and taxonomy
• Version 1.2: 2017-07-05
  Changes: Data collection