2CNA | pdb_00002cna

THE COVALENT AND THREE-DIMENSIONAL STRUCTURE OF CONCANAVALIN A, IV.ATOMIC COORDINATES,HYDROGEN BONDING,AND QUATERNARY STRUCTURE

• PDB DOI: https://doi.org/10.2210/pdb2CNA/pdb

• Classification: LECTIN (AGGLUTININ)
• Organism(s): Canavalia ensiformis
• Mutation(s): No 


• Deposited: 1975-04-01 Released: 1977-03-16 
• Deposition Author(s): Reekejunior, G.N., Becker, J.W., Edelman, G.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å

Literature

The covalent and three-dimensional structure of concanavalin A. IV. Atomic coordinates, hydrogen bonding, and quaternary structure.

Reeke Jr., G.N., Becker, J.W., Edelman, G.M.

(1975) J Biological Chem 250: 1525-1547

• PubMed: 1112816 
• Primary Citation Related Structures: 
  2CNA


• PubMed Abstract: 
  

  The coordinates of the individual non-hydrogen atoms of the lectin concanavalin A have been determined from the molecular model at 2.0-A resolution and have been adjusted to make them consistent with the known stereochemistry of the constituent amino acid residues. From the coordinates, an analysis has been made of all intra- and intersubunit interactions in the molecule, yielding a description of the hydrogen-bonded structure of the monomer, including two extensive pleated sheet structures and other features of the folding of the polypeptide chain. The description of the noncovalent bonding is extended to include the interactions involved in stabilization of the dimeric and tetrameric structures of the molecule. The complete description of the molecular structure provides a basis for analysis of the biological activities of concanavalin A.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Macromolecule Content 

• Total Structure Weight: 25.69 kDa 
• Atom Count: 1,813 
• Modeled Residue Count: 237 
• Deposited Residue Count: 237 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CONCANAVALIN A	A	237	Canavalia ensiformis	Mutation(s): 0
UniProt
Find proteins for P02866 (Canavalia ensiformis) Explore P02866  Go to UniProtKB:  P02866

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MN	B [auth A]	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N
CA	C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å

Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 89.91	α = 90
b = 87.23	β = 90
c = 63.07	γ = 90

Structure Validation

Entry History 

Deposition Data

• Released Date: 1977-03-16 
Deposition Author(s): Reekejunior, G.N., Becker, J.W., Edelman, G.M.

Revision History  

• Version 1.0: 1977-03-16
  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: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2024-02-14
  Changes: Data collection, Database references, Derived calculations