3POW

Crystal structure of the globular domain of human calreticulin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

X-ray structure of the human calreticulin globular domain reveals a Peptide-binding area and suggests a multi-molecular mechanism

Chouquet, A.Paidassi, H.Ling, W.L.Frachet, P.Houen, G.Arlaud, G.J.Gaboriaud, C.

(2011) Plos One 6: e17886-e17886

  • DOI: 10.1371/journal.pone.0017886
  • Primary Citation of Related Structures:  
  • Also Cited By: 5LK5

  • PubMed Abstract: 
  • In the endoplasmic reticulum, calreticulin acts as a chaperone and a Ca(2+)-signalling protein. At the cell surface, it mediates numerous important biological effects. The crystal structure of the human calreticulin globular domain was solved at 1.55 ...

    In the endoplasmic reticulum, calreticulin acts as a chaperone and a Ca(2+)-signalling protein. At the cell surface, it mediates numerous important biological effects. The crystal structure of the human calreticulin globular domain was solved at 1.55 Å resolution. Interactions of the flexible N-terminal extension with the edge of the lectin site are consistently observed, revealing a hitherto unidentified peptide-binding site. A calreticulin molecular zipper, observed in all crystal lattices, could further extend this site by creating a binding cavity lined by hydrophobic residues. These data thus provide a first structural insight into the lectin-independent binding properties of calreticulin and suggest new working hypotheses, including that of a multi-molecular mechanism.


    Organizational Affiliation

    Institut de Biologie Structurale Jean-Pierre Ebel, CEA, Grenoble, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
calreticulin
A
265Homo sapiensMutation(s): 0 
Gene Names: CALR (CRTC)
Find proteins for P27797 (Homo sapiens)
Go to Gene View: CALR
Go to UniProtKB:  P27797
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: 1.55 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.176 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 42.890α = 90.00
b = 70.390β = 90.00
c = 91.820γ = 90.00
Software Package:
Software NamePurpose
XDSdata scaling
BUSTER-TNTrefinement
BUSTERrefinement
PHASERphasing
XSCALEdata scaling
XDSdata reduction
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2010-11-23 
  • Released Date: 2011-03-09 
  • Deposition Author(s): Gaboriaud, C.

Revision History 

  • Version 1.0: 2011-03-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-08-09
    Type: Data collection, Refinement description, Source and taxonomy