Proteolytic fragment of CRM1 spanning six C-terminal HEAT repeats

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.229 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Architecture of Crm1-Exportin 1 Suggests How Cooperativity is Achieved During Formation of a Nuclear Export Complex

Petosa, C.Schoehn, G.Askjaer, P.Bauer, U.Moulin, M.Steuerwald, U.Soler-Lopez, M.Baudin, F.Mattaj, I.W.Muller, C.W.

(2004) Mol Cell 16: 761

  • DOI: https://doi.org/10.1016/j.molcel.2004.11.018
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    CRM1/Exportin1 mediates the nuclear export of proteins bearing a leucine-rich nuclear export signal (NES) by forming a cooperative ternary complex with the NES-bearing substrate and the small GTPase Ran. We present a structural model of human CRM1 based on a combination of X-ray crystallography, homology modeling, and electron microscopy. The architecture of CRM1 resembles that of the import receptor transportin1, with 19 HEAT repeats and a large loop implicated in Ran binding. Residues critical for NES recognition are identified adjacent to the cysteine residue targeted by leptomycin B (LMB), a specific CRM1 inhibitor. We present evidence that a conformational change of the Ran binding loop accounts for the cooperativity of Ran- and substrate binding and for the selective enhancement of CRM1-mediated export by the cofactor RanBP3. Our findings indicate that a single architectural and mechanistic framework can explain the divergent effects of RanGTP on substrate binding by many import and export receptors.

  • Organizational Affiliation

    European Molecular Biology Laboratory, Grenoble Outstation, B.P. 181, 38042 Grenoble Cedex 9, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
321Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O14980 (Homo sapiens)
Explore O14980 
Go to UniProtKB:  O14980
PHAROS:  O14980
GTEx:  ENSG00000082898 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO14980
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.229 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 118.87α = 90
b = 62.87β = 90
c = 114.66γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-12-03
    Type: Initial release
  • Version 1.1: 2012-11-14
    Changes: Derived calculations, Non-polymer description, Other, Refinement description, Version format compliance
  • Version 1.2: 2019-11-13
    Changes: Data collection, Database references, Other
  • Version 1.3: 2024-05-08
    Changes: Data collection, Database references