Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 48.44 kDa 
• Atom Count: 4287 
• Residue Count: 456 
• Unique protein chains: 1

1GZT

Pseudomonas aeruginosa lectin II (PA-IIL) together with fucose

• DOI: 10.2210/pdb1GZT/pdb

• Classification: LECTIN
• Organism(s): Pseudomonas aeruginosa
• Mutation(s): No 


• Deposited: 2002-06-06 Released: 2002-11-19 
• Deposition Author(s): Mitchell, E., Imberty, A., Gilboa-Garber, N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.30 Å
• R-Value Free: 0.158 
• R-Value Work: 0.136 
• R-Value Observed: 0.137 

Literature

Structural Basis for Oligosaccharide-Mediated Adhesion of Pseudomonas Aeruginosa in the Lungs of Cystic Fibrosis Patients

Mitchell, E., Houles, C., Sudakevitz, D., Wimmerova, M., Gautier, C., Perez, S., Wu, A.M., Gilboa-Garber, N., Imberty, A.

(2002) Nat Struct Biol 9: 918

• PubMed: 12415289 
• DOI: 10.1038/nsb865
• Structures With Same Primary Citation


• PubMed Abstract: 
  

Pseudomonas aeruginosa galactose- and fucose-binding lectins (PA-IL and PA-IIL) contribute to the virulence of this pathogenic bacterium, which is a major cause of morbidity and mortality in cystic fibrosis patients. The crystal structure of PA-IIL in complex with fucose reveals a tetrameric structure. Each monomer displays a nine-stranded, antiparallel b-sandwich arrangement and contains two close calcium cations that mediate the binding of fucose in a recognition mode unique among carbohydrate-protein interactions. Experimental binding studies, together with theoretical docking of fucose-containing oligosaccharides, are consistent with the assumption that antigens of the Lewis a (Le(a)) series may be the preferred ligands of this lectin. Precise knowledge of the lectin-binding site should allow a better design of new antibacterial-adhesion prophylactics.

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Organizational Affiliation: 

E.S.R.F. Experiments Division, BP 220, F-38043 Grenoble cedex, France.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
FUCOSE-SPECIFIC LECTIN	A, B, C, D	115	Pseudomonas aeruginosa	Mutation(s): 0
Find proteins for Q9HYN5 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Go to UniProtKB:  Q9HYN5

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FUC	A, B, C, D	ALPHA-L-FUCOSE C6 H12 O5 SHZGCJCMOBCMKK-SXUWKVJYSA-N
CA	A, B, C, D	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
FUC	IC50:  250000   nM  Binding MOAD

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.30 Å
• R-Value Free: 0.158 
• R-Value Work: 0.136 
• R-Value Observed: 0.137 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 52.66	α = 90
b = 72.92	β = 94.23
c = 54.56	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL	data reduction
SCALA	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-06-06 
• Released Date: 2002-11-19 
Deposition Author(s): Mitchell, E., Imberty, A., Gilboa-Garber, N.

Revision History 

• Version 1.0: 2002-11-19
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance