Biological Assembly 1  

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

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

Biological Assembly 2  

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 2 assigned by authors and generated by PQS (software)

Biological Assembly 3  

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 3 assigned by authors and generated by PQS (software)

Biological Assembly 4  

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 4 assigned by authors and generated by PQS (software)

Biological Assembly 5  

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 5 assigned by authors and generated by PQS (software)

Biological Assembly 6  

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 6 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 100.99 kDa 
• Atom Count: 7,267 
• Modelled Residue Count: 835 
• Deposited Residue Count: 894 
• Unique protein chains: 1

 1USQ

Complex of E. Coli DraE adhesin with Chloramphenicol

• PDB DOI: 10.2210/pdb1USQ/pdb

• Classification: ADHESIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2003-11-27 Released: 2004-08-31 
• Deposition Author(s): Anderson, K.L., Billington, J., Pettigrew, D., Cota, E., Roversi, P., Simpson, P., Chen, H.A., Urvil, P., Dumerle, L., Barlow, P., Medof, E., Smith, R.A.G., Nowicki, B., Le Bouguenec, C., Lea, S.M., Matthews, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.225 
• R-Value Work: 0.191 
• R-Value Observed: 0.193 

Literature

High Resolution Studies of the Afa/Dr Adhesin Drae and its Interaction with Chloramphenicol

Pettigrew, D., Anderson, K.L., Billington, J., Cota, E., Simpson, P., Urvil, P., Rabuzin, F., Roversi, P., Nowicki, B., Du Merle, L., Le Bouguenec, C., Matthews, S., Lea, S.M.

(2004) J Biol Chem 279: 46851

• PubMed: 15331605 
• DOI: 10.1074/jbc.M409284200
• Primary Citation of Related Structures:  
  1USQ, 1USZ, 1UT1, 1UT2


• PubMed Abstract: 
  

Pathogenic Escherichia coli expressing Afa/Dr adhesins are able to cause both urinary tract and diarrheal infections. The Afa/Dr adhesins confer adherence to epithelial cells via interactions with the human complement regulating protein, decay accelerating factor (DAF or CD55). Two of the Afa/Dr adhesions, AfaE-III and DraE, differ from each other by only three residues but are reported to have several different properties. One such difference is disruption of the interaction between DraE and CD55 by chloramphenicol, whereas binding of AfaE-III to CD55 is unaffected. Here we present a crystal structure of a strand-swapped trimer of wild type DraE. We also present a crystal structure of this trimer in complex with chloramphenicol, as well as NMR data supporting the binding position of chloramphenicol within the crystal. The crystal structure reveals the precise atomic basis for the sensitivity of DraE-CD55 binding to chloramphenicol and demonstrates that in contrast to other chloramphenicol-protein complexes, drug binding is mediated via recognition of the chlorine "tail" rather than via intercalation of the benzene rings into a hydrophobic pocket.

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Related Citations: 

• An Atomic Resolution Model for Assmebly, Architecture,and Function of the Dr Adhesins
  Anderson, K.L., Billington, J., Pettigrew, D., Cota, E., Simpson, P., Roversi, P., Chen, H.A., Urvil, P., Du Merle, L., Barlow, P.N., Medof, M.E., Smith, R.A.G., Nowicki, B., Le Bouguenec, C., Lea, S.M., Matthews, S.
  (2004) Mol Cell 15: 647

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Organizational Affiliation: 

Laboratory of Molecular Biophysics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DR HEMAGGLUTININ STRUCTURAL SUBUNIT	A, B, C, D, E, F	149	Escherichia coli	Mutation(s): 3  Gene Names: draA
UniProt
Find proteins for P24093 (Escherichia coli) Explore P24093  Go to UniProtKB:  P24093

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CLM	FA [auth E], K [auth A], KA [auth F], Q [auth B], V [auth C], Z [auth D]	CHLORAMPHENICOL C11 H12 Cl2 N2 O5 WIIZWVCIJKGZOK-RKDXNWHRSA-N
SO4	AA [auth D], BA [auth E], CA [auth E], G [auth A], GA [auth F], H [auth A], HA [auth F], L [auth A], M [auth B], N [auth B], R [auth C], S [auth C], W [auth D], X [auth D]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
EDO	DA [auth E], EA [auth E], I [auth A], IA [auth F], J [auth A], JA [auth F], O [auth B], P [auth B], T [auth C], U [auth C], Y [auth D]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.225 
• R-Value Work: 0.191 
• R-Value Observed: 0.193 
• Space Group: P 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 118.969	α = 90
b = 118.969	β = 90
c = 57.416	γ = 120

Software Package:

Software Name	Purpose
TNT	refinement
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-08-31 
Deposition Author(s): Anderson, K.L., Billington, J., Pettigrew, D., Cota, E., Roversi, P., Simpson, P., Chen, H.A., Urvil, P., Dumerle, L., Barlow, P., Medof, E., Smith, R.A.G., Nowicki, B., Le Bouguenec, C., Lea, S.M., Matthews, S.

Revision History  

• Version 1.0: 2004-08-31
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance