2CHH

RALSTONIA SOLANACEARUM HIGH-AFFINITY MANNOSE-BINDING LECTIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1 Å
  • R-Value Free: 0.110 
  • R-Value Work: 0.100 

wwPDB Validation 3D Report Full Report


This is version 2.0 of the entry. See complete history

Literature

A new Ralstonia solanacearum high-affinity mannose-binding lectin RS-IIL structurally resembling the Pseudomonas aeruginosa fucose-specific lectin PA-IIL.

Sudakevitz, D.Kostlanova, N.Blatman-Jan, G.Mitchell, E.P.Lerrer, B.Wimmerova, M.Katcoff, D.J.Imberty, A.Gilboa-Garber, N.

(2004) Mol. Microbiol. 52: 691-700

  • DOI: 10.1111/j.1365-2958.2004.04020.x
  • Primary Citation of Related Structures:  
  • Also Cited By: 2JDY, 2JDP, 2JDN, 2JDM

  • PubMed Abstract: 
  • The plant pathogen Ralstonia solanacearum produces two lectins, each with different affinity to fucose. We described previously the properties and sequence of the first lectin, RSL (subunit M(r) 9.9 kDa), which is related to fungal lectins (Sudakevit ...

    The plant pathogen Ralstonia solanacearum produces two lectins, each with different affinity to fucose. We described previously the properties and sequence of the first lectin, RSL (subunit M(r) 9.9 kDa), which is related to fungal lectins (Sudakevitz, D., Imberty, A., and Gilboa-Garber, N., 2002, J Biochem 132: 353-358). The present communication reports the discovery of the second one, RS-IIL (subunit M(r) 11.6 kDa), a tetrameric lectin, with high sequence similarity to the fucose-binding lectin PA-IIL of Pseudomonas aeruginosa. RS-IIL recognizes fucose but displays much higher affinity to mannose and fructose, which is opposite to the preference spectrum of PA-IIL. Determination of the crystal structure of RS-IIL complexed with a mannose derivative demonstrates a tetrameric structure very similar to the recently solved PA-IIL structure (Mitchell, E., et al., 2002, Nature Struct Biol 9: 918-921). Each monomer contains two close calcium cations that mediate the binding of the monosaccharide and explain the outstandingly high affinity to the monosaccharide ligand. The binding loop of the cations is fully conserved in RS-IIL and PA-IIL, whereas the preference for mannose versus fucose can be attributed to the change of a three-amino-acid sequence in the 'specificity loop'.


    Organizational Affiliation

    Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, 52900, Israel.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN RSC3288
A
114Ralstonia solanacearum (strain GMI1000)Mutation(s): 0 
Find proteins for Q8XUA5 (Ralstonia solanacearum (strain GMI1000))
Go to UniProtKB:  Q8XUA5
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

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Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
MAN
Query on MAN

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Download CCD File 
A
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
UNX
Query on UNX

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Download CCD File 
A
UNKNOWN ATOM OR ION
X
*
 Ligand Interaction
BMA
Query on BMA

Download SDF File 
Download CCD File 
A
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1 Å
  • R-Value Free: 0.110 
  • R-Value Work: 0.100 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 59.292α = 90.00
b = 62.064β = 90.00
c = 74.893γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
MOLREPphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-03-16
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-06-27
    Type: Data collection, Derived calculations
  • Version 2.0: 2018-12-19
    Type: Atomic model, Data collection, Database references, Derived calculations