1CON

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.171 
  • R-Value Observed: 0.171 

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This is version 1.3 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 D Biol Crystallogr 49: 561-571

  • DOI: https://doi.org/10.1107/S0907444993006390
  • Primary Citation of Related Structures:  
    1CON

  • 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 = 62.5 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.


  • Organizational Affiliation

    Department of Chemistry, University of Manchester, England.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CONCANAVALIN A237Canavalia ensiformisMutation(s): 0 
UniProt
Find proteins for P02866 (Canavalia ensiformis)
Explore P02866 
Go to UniProtKB:  P02866
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02866
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.171 
  • R-Value Observed: 0.171 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.7α = 90
b = 86.5β = 90
c = 62.5γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Derived calculations, Other