1KU8

Crystal structure of Jacalin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for the unusual carbohydrate-binding specificity of jacalin towards galactose and mannose.

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

(2002) Biochem.J. 364: 173-180

  • Primary Citation of Related Structures:  
  • Also Cited By: 4R6R, 4R6Q, 4R6P, 4R6O, 4R6N

  • PubMed Abstract: 
  • Evidence is presented that the specificity of jacalin, the seed lectin from jack fruit (Artocarpus integrifolia), is not directed exclusively against the T-antigen disaccharide Galbeta1,3GalNAc, lactose and galactose, but also against mannose and oli ...

    Evidence is presented that the specificity of jacalin, the seed lectin from jack fruit (Artocarpus integrifolia), is not directed exclusively against the T-antigen disaccharide Galbeta1,3GalNAc, lactose and galactose, but also against mannose and oligomannosides. Biochemical analyses based on surface-plasmon-resonance measurements, combined with the X-ray-crystallographic determination of the structure of a jacalin-alpha-methyl-mannose complex at 2 A resolution, demonstrated clearly that jacalin is fully capable of binding mannose. Besides mannose, jacalin also interacts readily with glucose, N-acetylneuraminic acid and N-acetylmuramic acid. Structural analyses demonstrated that the relatively large size of the carbohydrate-binding site enables jacalin to accommodate monosaccharides with different hydroxyl conformations and provided unambiguous evidence that the beta-prism structure of jacalin is a sufficiently flexible structural scaffold to confer different carbohydrate-binding specificities to a single lectin.


    Organizational Affiliation

    AFMB, UMR-CNRS 6098, 31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
JACALIN ALPHA CHAIN
A, C, E, G
133Artocarpus integerMutation(s): 0 
Find proteins for P18670 (Artocarpus integer)
Go to UniProtKB:  P18670
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
JACALIN BETA CHAIN
B, D, F, H
18Artocarpus integerMutation(s): 0 
Find proteins for P18671 (Artocarpus integer)
Go to UniProtKB:  P18671
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.191 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 58.795α = 90.00
b = 82.612β = 106.80
c = 63.482γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
DENZOdata reduction
CNSrefinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-06-19
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance