5DLQ

Crystal structure of RanGTP-Exportin 4-eIF5A complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.224 

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Literature

Structure of the exportin Xpo4 in complex with RanGTP and the hypusine-containing translation factor eIF5A.

Aksu, M.Trakhanov, S.Gorlich, D.

(2016) Nat Commun 7: 11952-11952

  • DOI: https://doi.org/10.1038/ncomms11952
  • Primary Citation of Related Structures:  
    5DLQ

  • PubMed Abstract: 

    Xpo4 is a bidirectional nuclear transport receptor that mediates nuclear export of eIF5A and Smad3 as well as import of Sox2 and SRY. How Xpo4 recognizes such a variety of cargoes is as yet unknown. Here we present the crystal structure of the RanGTP·Xpo4·eIF5A export complex at 3.2 Å resolution. Xpo4 has a similar structure as CRM1, but the NES-binding site is occluded, and a new interaction site evolved that recognizes both globular domains of eIF5A. eIF5A contains hypusine, a unique amino acid with two positive charges, which is essential for cell viability and eIF5A function in translation. The hypusine docks into a deep, acidic pocket of Xpo4 and is thus a critical element of eIF5A's complex export signature. This further suggests that Xpo4 recognizes other cargoes differently, and illustrates how Xpo4 suppresses - in a chaperone-like manner - undesired interactions of eIF5A inside nuclei.


  • Organizational Affiliation

    Department of Cellular Logistics, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Exportin-4A [auth B],
D [auth A]
1,113Mus musculusMutation(s): 1 
Gene Names: Xpo4Kiaa1721
UniProt & NIH Common Fund Data Resources
Find proteins for Q9ESJ0 (Mus musculus)
Explore Q9ESJ0 
Go to UniProtKB:  Q9ESJ0
IMPC:  MGI:1888526
Entity Groups  
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UniProt GroupQ9ESJ0
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
GTP-binding nuclear protein RanB [auth C],
E [auth D]
176Homo sapiensMutation(s): 1 
Gene Names: RANARA24OK/SW-cl.81
EC: 3.6.5
UniProt & NIH Common Fund Data Resources
Find proteins for P62826 (Homo sapiens)
Explore P62826 
Go to UniProtKB:  P62826
PHAROS:  P62826
GTEx:  ENSG00000132341 
Entity Groups  
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UniProt GroupP62826
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 5A-1C [auth F],
F [auth E]
141Homo sapiensMutation(s): 0 
Gene Names: EIF5A
UniProt & NIH Common Fund Data Resources
Find proteins for P63241 (Homo sapiens)
Explore P63241 
Go to UniProtKB:  P63241
PHAROS:  P63241
GTEx:  ENSG00000132507 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63241
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.224 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.616α = 90
b = 98.616β = 90
c = 726.864γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XSCALEdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
PHENIXphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Germany--

Revision History  (Full details and data files)

  • Version 1.0: 2016-06-22
    Type: Initial release
  • Version 1.1: 2016-06-29
    Changes: Database references
  • Version 1.2: 2024-10-16
    Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary