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 
  • R-Value Observed: 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
  • Primary Citation of Related Structures:  
    1CJP

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CONCANAVALIN AABCD237Canavalia ensiformisMutation(s): 0 
Find proteins for P02866 (Canavalia ensiformis)
Explore P02866 
Go to UniProtKB:  P02866
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MUG
Query on MUG

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

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

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 
  • R-Value Observed: 0.182 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.62α = 90
b = 128.71β = 118.47
c = 82.23γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
XDSdata reduction
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

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