2IXQ

The solution structure of the invasive tip complex from Afa-Dr fibrils

• PDB DOI: https://doi.org/10.2210/pdb2IXQ/pdb

• Classification: CELL ADHESION
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2006-07-10 Released: 2006-09-20 
• Deposition Author(s): Cota, E., Jones, C., Simpson, P., Altroff, H., Anderson, K.L., du Merle, L., Guignot, J., Servin, A., Le Bouguenec, C., Mardon, H., Matthews, S.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Literature

The solution structure of the invasive tip complex from Afa/Dr fibrils.

Cota, E., Jones, C., Simpson, P., Altroff, H., Anderson, K.L., du Merle, L., Guignot, J., Servin, A., Le Bouguenec, C., Mardon, H., Matthews, S.

(2006) Mol Microbiol 62: 356-366

• PubMed: 16965519 
• DOI: https://doi.org/10.1111/j.1365-2958.2006.05375.x
• Primary Citation of Related Structures:  
  2FVN, 2IXQ


• PubMed Abstract: 
  

  Afa/Dr family of adhesins are produced by pathogenic Escherichia coli strains that are especially prevalent in chronic diarrhoeal and recurrent urinary tract infections. Most notably, they are found in up to 50% of cystitis cases in children and 30% of pyelonephritis in pregnant women. Afa/Dr adhesins are capped surface fibrils that mediate recognition of the host and subsequent bacterial internalization. Using the newly solved three-dimensional structure of the minimal invasive complex (AfaDE) combined with biochemical and cellular assays, we reveal the architecture of the fibrillar cap and identify a novel mode of synergistic integrin recognition.

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Organizational Affiliation: 

Division of Molecular Biosciences, Biochemistry Building, Imperial College London, South Kensington, London SW7 2AZ, UK.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 30.77 kDa 
• Atom Count: 2,163 
• Modelled Residue Count: 285 
• Deposited Residue Count: 285 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein AfaD	A	142	Escherichia coli	Mutation(s): 0  Gene Names: afaD
UniProt
Find proteins for Q7BG36 (Escherichia coli) Explore Q7BG36  Go to UniProtKB:  Q7BG36

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Afimbrial adhesin AFA-III	B	143	Escherichia coli	Mutation(s): 0  Gene Names: afaE3, afaE-3
UniProt
Find proteins for Q57254 (Escherichia coli) Explore Q57254  Go to UniProtKB:  Q57254

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-09-20 
Deposition Author(s): Cota, E., Jones, C., Simpson, P., Altroff, H., Anderson, K.L., du Merle, L., Guignot, J., Servin, A., Le Bouguenec, C., Mardon, H., Matthews, S.

Revision History  

• Version 1.0: 2006-09-20
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2018-12-05
  Changes: Advisory, Atomic model, Data collection, Database references, Source and taxonomy, Structure summary
• Version 2.1: 2024-10-09
  Changes: Data collection, Database references, Structure summary