5LVY | pdb_00005lvy

Structural studies of the Aggregative Adherence Fimbriae of Enteroaggregative Escherichia coli

• PDB DOI: https://doi.org/10.2210/pdb5LVY/pdb
• BMRB: 34042

• Classification: CELL ADHESION
• Organism(s): Escherichia coli O111:H21
• Expression System: Escherichia coli-Pichia pastoris shuttle vector pPpARG4
• Mutation(s): No 


• Deposited: 2016-09-14 Released: 2017-07-26 
• Deposition Author(s): Liu, B., Matthews, S.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 10 
• Conformers Submitted: 10 
• Selection Criteria: all calculated structures submitted 

Literature

Structural and functional studies of Escherichia coli aggregative adherence fimbriae (AAF/V) reveal a deficiency in extracellular matrix binding.

Jnsson, R., Liu, B., Struve, C., Yang, Y., Jrgensen, R., Xu, Y., Jenssen, H., Krogfelt, K.A., Matthews, S.

(2017) Biochim Biophys Acta 1865: 304-311

• PubMed: 27939608 
• DOI: https://doi.org/10.1016/j.bbapap.2016.11.017
• Primary Citation Related Structures: 
  5LVY


• PubMed Abstract: 
  

  Enteroaggregative Escherichia coli (EAEC) is an emerging cause of acute and persistent diarrhea worldwide. The pathogenesis of different EAEC stains is complicated, however, the early essential step begins with attachment of EAEC to intestinal mucosa via aggregative adherence fimbriae (AAFs). Currently, five different variants have been identified, which all share a degree of similarity in the gene organization of their operons and sequences. Here, we report the solution structure of Agg5A from the AAF/V variant. While preserving the major structural features shared by all AAF members, only Agg5A possesses an inserted helix at the beginning of the donor strand, which together with altered surface electrostatics, renders the protein unable to interact with fibronectin. Hence, here we characterize the first AAF variant with a binding mode that varies from previously described AAFs.

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Organizational Affiliation: 
• Institute for Science and Environment, Roskilde University, Roskilde, Denmark; Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark.
Centre for Structural Biology, Department of Life Sciences, Imperial College London, South Kensington, London, United Kingdom.
Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark.
Institute for Science and Environment, Roskilde University, Roskilde, Denmark.
Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark. Electronic address: [e-mail].
Centre for Structural Biology, Department of Life Sciences, Imperial College London, South Kensington, London, United Kingdom. Electronic address: [e-mail].

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 16.49 kDa 
• Atom Count: 1,160 
• Modeled Residue Count: 154 
• Deposited Residue Count: 154 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Adhesin protein	A	154	Escherichia coli O111:H21	Mutation(s): 0  Gene Names: aaf5A
UniProt
Find proteins for C9K5V2 (Escherichia coli O111:H21) Explore C9K5V2  Go to UniProtKB:  C9K5V2

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 10 
• Conformers Submitted: 10 
• Selection Criteria: all calculated structures submitted 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2017-07-26 
Deposition Author(s): Liu, B., Matthews, S.

Revision History  

• Version 1.0: 2017-07-26
  Type: Initial release
  
• Version 2.0: 2017-08-02
  Changes: Advisory, Atomic model, Derived calculations, Structure summary
• Version 2.1: 2024-10-23
  Changes: Data collection, Database references, Derived calculations, Structure summary