1JHN

Crystal Structure of the Lumenal Domain of Calnexin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.377 
  • R-Value Work: 0.327 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Structure of calnexin, an ER chaperone involved in quality control of protein folding.

Schrag, J.D.Bergeron, J.J.Li, Y.Borisova, S.Hahn, M.Thomas, D.Y.Cygler, M.

(2001) Mol.Cell 8: 633-644


  • PubMed Abstract: 
  • The three-dimensional structure of the lumenal domain of the lectin-like chaperone calnexin determined to 2.9 A resolution reveals an extended 140 A arm inserted into a beta sandwich structure characteristic of legume lectins. The arm is composed of ...

    The three-dimensional structure of the lumenal domain of the lectin-like chaperone calnexin determined to 2.9 A resolution reveals an extended 140 A arm inserted into a beta sandwich structure characteristic of legume lectins. The arm is composed of tandem repeats of two proline-rich sequence motifs which interact with one another in a head-to-tail fashion. Identification of the ligand binding site establishes calnexin as a monovalent lectin, providing insight into the mechanism by which the calnexin family of chaperones interacts with monoglucosylated glycoproteins.


    Related Citations: 
    • Identification and Crystallization of a Protease-Resistant Core of Calnexin that Retains Biological Activity
      Hahn, M.,Borisova, S.,Schrag, J.D.,Tessier, D.C.,Zapun, A.,Tom, R.,Kamen, A.A.,Bergeron, J.J.,Thomas, D.Y.,Cygler, M.
      (1998) J.Struct.Biol. 123: 260


    Organizational Affiliation

    Biotechnology Research Institute, NRC, 6100 Royalmount Avenue, Montreal, Quebec H4P 2R2, Canada. joe@bri.nrc.ca




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
calnexin
A
424Canis lupus familiarisGene Names: CANX
Find proteins for P24643 (Canis lupus familiaris)
Go to Gene View: CANX
Go to UniProtKB:  P24643
Small Molecules
Ligands 1 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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.377 
  • R-Value Work: 0.327 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 85.772α = 90.00
b = 85.772β = 90.00
c = 143.476γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
CNSrefinement
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-10-10
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance