1CJP

CONCANAVALIN A COMPLEX WITH 4'-METHYLUMBELLIFERYL-ALPHA-D-GLUCOPYRANOSIDE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.78 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.182 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of the complex of concanavalin A with 4'-methylumbelliferyl-alpha-D-glucopyranoside.

Hamodrakas, S.J.Kanellopoulos, P.N.Pavlou, K.Tucker, P.A.

(1997) J.Struct.Biol. 118: 23-30

  • DOI: 10.1006/jsbi.1996.3837

  • PubMed Abstract: 
  • Concanavalin A (Con A) is the best known plant lectin, with important biological properties arising from its specific saccharide-binding ability. Its exact biological role still remains unknown. The complex of Con A with 4'-methylumbelliferyl-alpha-D ...

    Concanavalin A (Con A) is the best known plant lectin, with important biological properties arising from its specific saccharide-binding ability. Its exact biological role still remains unknown. The complex of Con A with 4'-methylumbelliferyl-alpha-D-glucopyranoside (alpha-MUG) has been crystallized in space group P2(1) with cell dimensions a = 81.62 A, b = 128.71 A, c = 82.23 A, and beta = 118.47 degrees. X-ray diffraction intensities to 2.78 A have been collected. The structure of the complex was solved by molecular replacement and refined by simulated annealing methods to a crystallographic R-factor value of 0.182 and a free-R-factor value of 0.216. The asymmetric unit contains four subunits arranged as a tetramer, with approximate 222 symmetry. A saccharide molecule is bound in the sugar-binding site at the surface of each subunit, with the nonsugar (aglycon) part adopting a different orientation in each subunit. The aglycon orientation, although probably determined by packing of tetramers in the crystal lattice, helps to characterize the orientation of the saccharide in the sugar-binding pocket. The structure is the best determined alpha-D-glucoside:Con A complex to date and the hydrogen bonding network in the saccharide-binding site can be described with some confidence and compared with that of the alpha-D-mannosides.


    Related Citations: 
    • A Triclinic Crystal Form of the Lectin Concanavalin A
      Kanellopoulos, P.N.,Tucker, P.A.,Pavlou, K.,Agianian, B.,Hamodrakas, S.J.
      (1996) J.Struct.Biol. 117: 16
    • The Crystal Structure of the Complexes of Concanavalin a with 4'-Nitrophenyl-Alpha-D-Mannopyranoside and 4'-Nitrophenyl-Alpha-D-Glucopyranoside
      Kanellopoulos, P.N.,Pavlou, K.,Perrakis, A.,Agianian, B.,Vorgias, C.E.,Mavrommatis, C.,Soufi, M.,Tucker, P.A.,Hamodrakas, S.J.
      (1996) J.Struct.Biol. 116: 345


    Organizational Affiliation

    Department of Biology, Section of Cell Biology and Biophysics, University of Athens, Panepistimiopolis, Greece.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CONCANAVALIN A
A, B, C, D
237Canavalia ensiformisN/A
Find proteins for P02866 (Canavalia ensiformis)
Go to UniProtKB:  P02866
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

Download SDF File 
Download CCD File 
A, B, C, D
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
MUG
Query on MUG

Download SDF File 
Download CCD File 
A, B, C, D
4-METHYLUMBELLIFERYL-ALPHA-D-GLUCOSE
C16 H18 O8
YUDPTGPSBJVHCN-JZYAIQKZSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A, B, C, D
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.78 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.182 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 81.620α = 90.00
b = 128.710β = 118.47
c = 82.230γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
X-PLORrefinement
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-10-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance