Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 50.07 kDa 
• Atom Count: 3578 
• Residue Count: 418 
• Unique protein chains: 1

2W5P

DraE Adhesin in complex with Chloramphenicol Succinate (monoclinic form)

• DOI: 10.2210/pdb2W5P/pdb

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


• Deposited: 2008-12-11 Released: 2009-06-02 
• Deposition Author(s): Pettigrew, D.M., Roversi, P., Davies, S.G., Russell, A.J., Lea, S.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.237 
• R-Value Work: 0.193 
• R-Value Observed: 0.195 

Literature

A Structural Study of the Interaction between the Dr Haemagglutinin Drae and Derivatives of Chloramphenicol

Pettigrew, D.M., Roversi, P., Davies, S.G., Russell, A.J., Lea, S.M.

(2009) Acta Crystallogr D Biol Crystallogr 65: 513

• PubMed: 19465765 
• DOI: 10.1107/S0907444909005113
• Primary Citation of Related Structures:  
  2W5P, 2JKJ, 2JKN, 2JKL


• PubMed Abstract: 
  

Dr adhesins are expressed on the surface of uropathogenic and diffusely adherent strains of Escherichia coli. The major adhesin subunit (DraE/AfaE) of these organelles mediates attachment of the bacterium to the surface of the host cell and possibly intracellular invasion through its recognition of the complement regulator decay-accelerating factor (DAF) and/or members of the carcinoembryonic antigen (CEA) family. The adhesin subunit of the Dr haemagglutinin, a Dr-family member, additionally binds type IV collagen and is inhibited in all its receptor interactions by the antibiotic chloramphenicol (CLM). In this study, previous structural work is built upon by reporting the X-ray structures of DraE bound to two chloramphenicol derivatives: chloramphenicol succinate (CLS) and bromamphenicol (BRM). The CLS structure demonstrates that acylation of the 3-hydroxyl group of CLM with succinyl does not significantly perturb the mode of binding, while the BRM structure implies that the binding pocket is able to accommodate bulkier substituents on the N-acyl group. It is concluded that modifications of the 3-hydroxyl group would generate a potent Dr haemagglutinin inhibitor that would not cause the toxic side effects that are associated with the normal bacteriostatic activity of CLM.

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Organizational Affiliation: 

Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, England.

Macromolecules

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

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL8	A, B, C	CHLORAMPHENICOL SUCCINATE C15 H16 Cl2 N2 O8 LIRCDOVJWUGTMW-ZWNOBZJWSA-N
SO4	A, B, C	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.237 
• R-Value Work: 0.193 
• R-Value Observed: 0.195 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 118.941	α = 90
b = 68.553	β = 111.17
c = 62.061	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2008-12-11 
• Released Date: 2009-06-02 
Deposition Author(s): Pettigrew, D.M., Roversi, P., Davies, S.G., Russell, A.J., Lea, S.M.

Revision History 

• Version 1.0: 2009-06-02
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance