3GB8

Crystal structure of CRM1/Snurportin-1 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis for leucine-rich nuclear export signal recognition by CRM1.

Dong, X.Biswas, A.Suel, K.E.Jackson, L.K.Martinez, R.Gu, H.Chook, Y.M.

(2009) Nature 458: 1136-1141

  • DOI: 10.1038/nature07975
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • CRM1 (also known as XPO1 and exportin 1) mediates nuclear export of hundreds of proteins through the recognition of the leucine-rich nuclear export signal (LR-NES). Here we present the 2.9 A structure of CRM1 bound to snurportin 1 (SNUPN). Snurportin ...

    CRM1 (also known as XPO1 and exportin 1) mediates nuclear export of hundreds of proteins through the recognition of the leucine-rich nuclear export signal (LR-NES). Here we present the 2.9 A structure of CRM1 bound to snurportin 1 (SNUPN). Snurportin 1 binds CRM1 in a bipartite manner by means of an amino-terminal LR-NES and its nucleotide-binding domain. The LR-NES is a combined alpha-helical-extended structure that occupies a hydrophobic groove between two CRM1 outer helices. The LR-NES interface explains the consensus hydrophobic pattern, preference for intervening electronegative residues and inhibition by leptomycin B. The second nuclear export signal epitope is a basic surface on the snurportin 1 nucleotide-binding domain, which binds an acidic patch on CRM1 adjacent to the LR-NES site. Multipartite recognition of individually weak nuclear export signal epitopes may be common to CRM1 substrates, enhancing CRM1 binding beyond the generally low affinity LR-NES. Similar energetic construction is also used in multipartite nuclear localization signals to provide broad substrate specificity and rapid evolution in nuclear transport.


    Related Citations: 
    • Structural basis of assembly and disassembly of the CRM1 nuclear export complex
      Dong, X., Biswas, A., Chook, Y.M.
      (2009) To be published --: --

    Organizational Affiliation

    Department of Pharmacology, University of Texas Southwestern Medical Center at Dallas, 6001 Forest Park, Dallas, Texas 75390-9041, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Snurportin-1
B
329Homo sapiensMutation(s): 0 
Gene Names: RNUT1SNUPNSPN1
Find proteins for O95149 (Homo sapiens)
Go to UniProtKB:  O95149
NIH Common Fund Data Resources
PHAROS  O95149

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Exportin-1
A
1071Homo sapiensMutation(s): 0 
Gene Names: CRM1XPO1
Find proteins for O14980 (Homo sapiens)
Go to UniProtKB:  O14980
NIH Common Fund Data Resources
PHAROS  O14980
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.238 
  • Space Group: P 64 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 250.4α = 90
b = 250.4β = 90
c = 190.4γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-03-31
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2017-11-01
    Changes: Refinement description