Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Protein Workshop | Ligand Explorer

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

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

Macromolecule Content

• Total Structure Weight: 19768.66 
• Atom Count: 1246 
• Residue Count: 157 
• Unique protein chains: 1

3QRA

The crystal structure of Ail, the attachment invasion locus protein of Yersinia pestis

• DOI: 10.2210/pdb3QRA/pdb

• Classification: CELL INVASION
• Organism(s): Yersinia pestis
• Expression System: Escherichia coli


• Deposited: 2011-02-17 Released: 2011-11-23 
• Deposition Author(s): Yamashita, S., Lukacik, P., Noinaj, N., Buchanan, S.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.801 Å
• R-Value Free: 0.228 
• R-Value Work: 0.199 

Literature

Structural Insights into Ail-Mediated Adhesion in Yersinia pestis.

Yamashita, S., Lukacik, P., Barnard, T.J., Noinaj, N., Felek, S., Tsang, T.M., Krukonis, E.S., Hinnebusch, B.J., Buchanan, S.K.

(2011) Structure 19: 1672-1682

• PubMed: 22078566 
• DOI: 10.1016/j.str.2011.08.010
• Primary Citation of Related Structures:  
  3QRC


• PubMed Abstract: 
  

Ail is an outer membrane protein from Yersinia pestis that is highly expressed in a rodent model of bubonic plague, making it a good candidate for vaccine development. Ail is important for attaching to host cells and evading host immune responses, facilitating rapid progression of a plague infection. Binding to host cells is important for injection of cytotoxic Yersinia outer proteins. To learn more about how Ail mediates adhesion, we solved two high-resolution crystal structures of Ail, with no ligand bound and in complex with a heparin analog called sucrose octasulfate. We identified multiple adhesion targets, including laminin and heparin, and showed that a 40 kDa domain of laminin called LG4-5 specifically binds to Ail. We also evaluated the contribution of laminin to delivery of Yops to HEp-2 cells. This work constitutes a structural description of how a bacterial outer membrane protein uses a multivalent approach to bind host cells.

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Organizational Affiliation: 

Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-8030, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Attachment invasion locus protein	A	157	Yersinia pestis	Mutation(s): 0  Gene Names: ompX
Membrane protein mpstruct	Group:  TRANSMEMBRANE PROTEINS: BETA-BARREL		Sub Group:  Beta-Barrel Membrane Proteins: Monomeric/Dimeric	Protein:  Ail adhesion protein
Find proteins for Q8D0Z7 (Yersinia pestis) Go to UniProtKB:  Q8D0Z7

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
C8E	A	(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE C16 H34 O5 FEOZZFHAVXYAMB-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.801 Å
• R-Value Free: 0.228 
• R-Value Work: 0.199 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 50.236	α = 90.00
b = 50.236	β = 90.00
c = 170.623	γ = 90.00

Software Package:

Software Name	Purpose
SERGUI	data collection
PHENIX	refinement
PHASER	phasing
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2011-02-17 
• Released Date: 2011-11-23 
• Deposition Author(s): Yamashita, S., Lukacik, P., Noinaj, N., Buchanan, S.K.

Revision History 

• Version 1.0: 2011-11-23
  Type: Initial release