2EIG

Lotus tetragonolobus seed lectin (Isoform)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 

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This is version 1.4 of the entry. See complete history


Literature

Identification of a new quaternary association for legume lectins

Moreno, F.B.M.B.de Oliveira, T.M.Martil, D.E.Vicoti, M.M.Bezerra, G.A.Abrego, J.R.B.Cavada, B.S.Filgueira de Azevedo Jr., W.

(2008) J Struct Biol 161: 133-143

  • DOI: 10.1016/j.jsb.2007.10.002
  • Primary Citation of Related Structures:  
    2EIG

  • PubMed Abstract: 
  • Lotus tetragonolobus lectin (LTA) is a fucose-specific legume lectin. Although several studies report a diverse combination of biological activities for LTA, little is known about the mechanisms involved in l-fucosyl oligosaccharide recognition. The crystal structure of LTA at 2 ...

    Lotus tetragonolobus lectin (LTA) is a fucose-specific legume lectin. Although several studies report a diverse combination of biological activities for LTA, little is known about the mechanisms involved in l-fucosyl oligosaccharide recognition. The crystal structure of LTA at 2.0A resolution reveals a different legume lectin tetramer. Its structure consists of a homotetramer composed of two back-to-back GS4-like dimers arranged in a new mode, resulting in a novel tetramer. The LTA N-linked carbohydrate at Asn4 and the unusual LTA dimer-dimer interaction are related to its particular mode of tetramerization. In addition, we used small angle X-ray scattering to investigate the quaternary structure of LTA in solution and to compare it to the crystalline structure. Although the crystal structure of LTA has revealed a conserved metal-binding site, its l-fucose-binding site presents some punctual differences. Our investigation of the new tetramer of LTA and its fucose-binding site is essential for further studies related to cross-linking between LTA and complex divalent l-fucosyl carbohydrates.


    Organizational Affiliation

    Curso de Pós-graduação em Biofísica Molecular, Departamento de Física, Universidade Estadual Paulista Júlio de Mesquita Filho, R. Cristovão Colombo, 2265, Nazareth, São José do Rio Preto, São Paulo, Brazil.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
lectinA, B, C, D234Lotus tetragonolobusMutation(s): 0 
UniProt
Find proteins for D0VWW1 (Lotus tetragonolobus)
Explore D0VWW1 
Go to UniProtKB:  D0VWW1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.892α = 90
b = 65.835β = 92
c = 102.537γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MAR345data collection
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-03-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.2: 2017-10-11
    Changes: Advisory, Refinement description
  • Version 1.3: 2018-01-31
    Changes: Experimental preparation
  • Version 1.4: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Data collection, Derived calculations, Structure summary