4MEE | pdb_00004mee

Crystal structure of the transport unit of the autotransporter AIDA-I from Escherichia coli

• PDB DOI: https://doi.org/10.2210/pdb4MEE/pdb

• Classification: PROTEIN BINDING
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  OPMPDBTMmpstruc


• Deposited: 2013-08-26 Released: 2014-06-04 
• Deposition Author(s): Gawarzewski, I., Tschapek, B., Hoeppner, A., Smits, S.H., Jose, J., Schmitt, L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 
  0.306 (Depositor), 0.293 (DCC) 
• R-Value Work: 
  0.248 (Depositor) 
• R-Value Observed: 
  0.251 (Depositor) 

Literature

Crystal structure of the transport unit of the autotransporter adhesin involved in diffuse adherence from Escherichia coli.

Gawarzewski, I., DiMaio, F., Winterer, E., Tschapek, B., Smits, S.H., Jose, J., Schmitt, L.

(2014) J Struct Biol 187: 20-29

• PubMed: 24841284 
• DOI: https://doi.org/10.1016/j.jsb.2014.05.003
• Primary Citation Related Structures: 
  4MEE


• PubMed Abstract: 
  

  Several serious gastrointestinal diseases, which are widespread all over the world, are caused by enteropathogenic Escherichia coli. The monomeric autotransporter AIDA-I (adhesin involved in diffuse adherence) represents an important virulence factor of these strains and is involved in adhesion, biofilm formation, aggregation and invasion into host cells. Here, we present the crystal structure of the transport unit of AIDA-I at 3.0Å resolution, which forms a 12-stranded β-barrel harboring the linker domain in its pore. Mutagenesis studies of the C-terminal amino acid demonstrated the great impact of this terminal residue on membrane integration of AIDA-I and passenger translocation.

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Organizational Affiliation: 
• Institute of Biochemistry, Heinrich-Heine University Düsseldorf, 40225 Düsseldorf, Germany; Institute of Pharmaceutical and Medicinal Chemistry, PharmaCampus, Westphalian Wilhelms-University Münster, 48149 Münster, Germany.
Department of Biochemistry and HHMI, University of Washington, Seattle, WA 98195, USA.
Institute of Pharmaceutical and Medicinal Chemistry, PharmaCampus, Westphalian Wilhelms-University Münster, 48149 Münster, Germany.
Institute of Biochemistry, Heinrich-Heine University Düsseldorf, 40225 Düsseldorf, Germany.
Institute of Biochemistry, Heinrich-Heine University Düsseldorf, 40225 Düsseldorf, Germany. Electronic address: [e-mail].

Biological Assembly 1  

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

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

Macromolecule Content 

• Total Structure Weight: 50.95 kDa 
• Atom Count: 2,234 
• Modeled Residue Count: 303 
• Deposited Residue Count: 469 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Diffuse adherence adhesin	A	469	Escherichia coli	Mutation(s): 0  Gene Names: aidA Membrane Entity: Yes
UniProt
Find proteins for Q03155 (Escherichia coli) Explore Q03155  Go to UniProtKB:  Q03155

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free:  0.306 (Depositor), 0.293 (DCC) 
• R-Value Work:  0.248 (Depositor) 
• R-Value Observed: 0.251 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.33	α = 90
b = 85.85	β = 90
c = 134.05	γ = 90

Software Package:

Software Name	Purpose
ADSC	data collection
Rosetta	model building
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling
Rosetta	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-06-04 
Deposition Author(s): Gawarzewski, I., Tschapek, B., Hoeppner, A., Smits, S.H., Jose, J., Schmitt, L.

Revision History  

• Version 1.0: 2014-06-04
  Type: Initial release
  
• Version 1.1: 2014-07-23
  Changes: Database references
• Version 1.2: 2024-02-28
  Changes: Data collection, Database references