Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 12.33 kDa 
• Atom Count: 746 
• Residue Count: 95 
• Unique protein chains: 1

2Y2Y

Oxidised form of E. coli CsgC

• DOI: 10.2210/pdb2Y2Y/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., Constable, S.C., Cota, E., Mathews, S.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.328 
• R-Value Work: 0.261 
• R-Value Observed: 0.265 

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
• Primary Citation of Related Structures:  
  2Y2T, 2Y2Y


• 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	Image
CURLI PRODUCTION PROTEIN CSGC	A	110	Escherichia coli O157:H7 str. EC4115	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ACT	A	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.328 
• R-Value Work: 0.261 
• R-Value Observed: 0.265 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 79.49	α = 90
b = 36.43	β = 117.45
c = 39.52	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	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., Constable, S.C., Cota, E., Mathews, S.J.

Revision History 

• Version 1.0: 2011-09-21
  Type: Initial release
  
• Version 1.1: 2014-03-12
  Changes: Source and taxonomy