1CON

THE REFINED STRUCTURE OF CADMIUM SUBSTITUTED CONCANAVALIN A AT 2.0 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.171 

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This is version 1.2 of the entry. See complete history

Literature

Refined structure of cadmium-substituted concanavalin A at 2.0 A resolution.

Naismith, J.H.Habash, J.Harrop, S.Helliwell, J.R.Hunter, W.N.Wan, T.C.Weisgerber, S.Kalb, A.J.Yariv, J.

(1993) Acta Crystallogr.,Sect.D 49: 561-571

  • DOI: 10.1107/S0907444993006390

  • PubMed Abstract: 
  • The three-dimensional structure of cadmium-substituted concanavalin A has been refined using X-PLOR. The R factor on all data between 8 and 2 A is 17.1%. The protein crystallizes in space group I222 with cell dimensions a = 88.7, b = 86.5 and c = 62. ...

    The three-dimensional structure of cadmium-substituted concanavalin A has been refined using X-PLOR. The R factor on all data between 8 and 2 A is 17.1%. The protein crystallizes in space group I222 with cell dimensions a = 88.7, b = 86.5 and c = 62.5 A and has one protein subunit per asymmetric unit. The final structure contains 237 amino acids, two Cd ions, one Ca ion and 144 water molecules. One Cd ion occupies the transition-metal binding site and the second occupies an additional site, the coordinates of which were first reported by Weinzierl & Kalb [FEBS Lett. (1971), 18, 268-270]. The additional Cd ion is bound with distorted octahedral symmetry and bridges the cleft between the two monomers which form the conventional dimer of concanavalin A. This study provides a detailed analysis of the refined structure of saccharide-free concanavalin A and is the basis for comparison with saccharide complexes reported elsewhere.


    Related Citations: 
    • Non-Glycosylated Recombinant Pro-Concanavalin a is Active without Polypeptide Cleavage
      Min, W.,Dunn, A.J.,Jones, D.H.
      (1992) Embo J. 11: 1303


    Organizational Affiliation

    Department of Chemistry, University of Manchester, England.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CONCANAVALIN A
A
237Canavalia ensiformisMutation(s): 0 
Find proteins for P02866 (Canavalia ensiformis)
Go to UniProtKB:  P02866
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
CD
Query on CD

Download SDF File 
Download CCD File 
A
CADMIUM ION
Cd
WLZRMCYVCSSEQC-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.171 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 88.700α = 90.00
b = 86.500β = 90.00
c = 62.500γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance