Fucose Binding lectin

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.190 

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This is version 1.3 of the entry. See complete history


A novel fucose recognition fold involved in innate immunity.

Bianchet, M.A.Odom, E.W.Vasta, G.R.Amzel, L.M.

(2002) Nat Struct Biol 9: 628-634

  • DOI: https://doi.org/10.1038/nsb817
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Anguilla anguilla agglutinin (AAA), a fucolectin found in the serum of European eel, participates in the recognition of bacterial liposaccharides by the animal innate immunity system. Because AAA specifically recognizes fucosylated terminals of H and Lewis (a) blood groups, it has been used extensively as a reagent in blood typing and histochemistry. AAA contains a newly discovered carbohydrate recognition domain present in proteins of organisms ranging from bacteria to vertebrates. The crystal structure of the complex of AAA with alpha-L-fucose characterizes the novel fold of this entire lectin family, identifying the residues that provide the structural determinants of oligosaccharide specificity. Modification of these residues explains how the different isoforms in serum can provide a diverse pathogen-specific recognition.

  • Organizational Affiliation

    Department of Biophysics and Biophysical Chemistry, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, Maryland 21205, USA. bianchet@juliet.med.jhmi.edu

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
LECTIN158Anguilla anguillaMutation(s): 0 
Find proteins for Q7SIC1 (Anguilla anguilla)
Explore Q7SIC1 
Go to UniProtKB:  Q7SIC1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7SIC1
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.190 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.54α = 90
b = 65.54β = 90
c = 245.136γ = 120
Software Package:
Software NamePurpose
CrystalCleardata collection
CrystalCleardata reduction
DMmodel building
CrystalCleardata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-07-31
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Refinement description, Structure summary