1OUW

Crystal structure of Calystegia sepium agglutinin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.37 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.153 
  • R-Value Observed: 0.153 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The crystal structure of the Calystegia sepium agglutinin reveals a novel quaternary arrangement of lectin subunits with a beta-prism fold

Bourne, Y.Roig-Zamboni, V.Barre, A.Peumans, W.J.Astoul, C.H.Van Damme, E.J.M.Rouge, P.

(2004) J Biol Chem 279: 527-533

  • DOI: 10.1074/jbc.M308218200
  • Primary Citation of Related Structures:  
    1OUW

  • PubMed Abstract: 
  • The high number of quaternary structures observed for lectins highlights the important role of these oligomeric assemblies during carbohydrate recognition events. Although a large diversity in the mode of association of lectin subunits is frequently observed, the oligomeric assemblies of plant lectins display small variations within a single family ...

    The high number of quaternary structures observed for lectins highlights the important role of these oligomeric assemblies during carbohydrate recognition events. Although a large diversity in the mode of association of lectin subunits is frequently observed, the oligomeric assemblies of plant lectins display small variations within a single family. The crystal structure of the mannose-binding jacalin-related lectin from Calystegia sepium (Calsepa) has been determined at 1.37-A resolution. Calsepa exhibits the same beta-prism fold as identified previously for other members of the family, but the shape and the hydrophobic character of its carbohydrate-binding site is unlike that of other members, consistent with surface plasmon resonance analysis showing a preference for methylated sugars. Calsepa reveals a novel dimeric assembly markedly dissimilar to those described earlier for Heltuba and jacalin but mimics the canonical 12-stranded beta-sandwich dimer found in legume lectins. The present structure exemplifies the adaptability of the beta-prism building block in the evolution of plant lectins and highlights the biological role of these quaternary structures for carbohydrate recognition.


    Organizational Affiliation

    AFMB-CNRS, CNRS UMR6098, F13402 Marseille Cedex 20, France. yves@afmb.cnrs-mrs.fr



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
lectinA, B, C, D152Calystegia sepiumMutation(s): 1 
UniProt
Find proteins for P93114 (Calystegia sepium)
Explore P93114 
Go to UniProtKB:  P93114
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MLT
Query on MLT

Download Ideal Coordinates CCD File 
N [auth C], Q [auth D]D-MALATE
C4 H6 O5
BJEPYKJPYRNKOW-UWTATZPHSA-N
 Ligand Interaction
IMD
Query on IMD

Download Ideal Coordinates CCD File 
G [auth A], H [auth A], L [auth B], M [auth B]IMIDAZOLE
C3 H5 N2
RAXXELZNTBOGNW-UHFFFAOYSA-O
 Ligand Interaction
EDO
Query on EDO

Download Ideal Coordinates CCD File 
E [auth A] , F [auth A] , I [auth B] , J [auth B] , K [auth B] , O [auth C] , P [auth C] , R [auth D] , 
E [auth A],  F [auth A],  I [auth B],  J [auth B],  K [auth B],  O [auth C],  P [auth C],  R [auth D],  S [auth D]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
AYA
Query on AYA
A, B, C, DL-PEPTIDE LINKINGC5 H9 N O3ALA
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.37 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.153 
  • R-Value Observed: 0.153 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 30.562α = 104.99
b = 51.792β = 94.36
c = 79.78γ = 94.85
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
CCP4data scaling
AMoREphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-11-11
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance