1OKO

Crystal structure of Pseudomonas Aeruginosa Lectin 1 complexed with galactose at 1.6 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.154 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Basis of Calcium and Galactose Recognition by the Lectin Pa-Il of Pseudomonas Aeruginosa

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

(2003) FEBS Lett. 555: 297

  • Primary Citation of Related Structures:  1UOJ

  • PubMed Abstract: 
  • The structure of the tetrameric Pseudomonas aeruginosa lectin I (PA-IL) in complex with galactose and calcium was determined at 1.6 A resolution, and the native protein was solved at 2.4 A resolution. Each monomer adopts a beta-sandwich fold with lig ...

    The structure of the tetrameric Pseudomonas aeruginosa lectin I (PA-IL) in complex with galactose and calcium was determined at 1.6 A resolution, and the native protein was solved at 2.4 A resolution. Each monomer adopts a beta-sandwich fold with ligand binding site at the apex. All galactose hydroxyl groups, except O1, are involved in a hydrogen bond network with the protein and O3 and O4 also participate in the co-ordination of the calcium ion. The stereochemistry of calcium galactose binding is reminiscent of that observed in some animal C-type lectins. The structure of the complex provides a framework for future design of anti-bacterial compounds.


    Organizational Affiliation

    CERMAV-CNRS (affiliated with Université Joseph Fourier), PO Box 53, F-38041 Grenoble Cedex 09, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PA-I GALACTOPHILIC LECTIN
A, B, C, D
121Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228)Gene Names: lecA (pa1L)
Find proteins for Q05097 (Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228))
Go to UniProtKB:  Q05097
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A, B, C, D
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
GAL
Query on GAL

Download SDF File 
Download CCD File 
A, B, C, D
BETA-D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-FPRJBGLDSA-N
 Ligand Interaction
MPD
Query on MPD

Download SDF File 
Download CCD File 
A
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
GLA
Query on GLA

Download SDF File 
Download CCD File 
B, C, D
ALPHA D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-PHYPRBDBSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
GALKd: 29412 nM BINDINGMOAD
GLAKd: 29412 nM BINDINGMOAD
GLBKd: 29000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.154 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 49.057α = 90.00
b = 53.275β = 90.00
c = 160.675γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
MOLREPphasing
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-12-04
    Type: Initial release
  • Version 1.1: 2015-08-12
    Type: Atomic model, Derived calculations, Other, Version format compliance