Experimental Data Snapshot

  • Resolution: 2.15 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.176 

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This is version 1.3 of the entry. See complete history


The structure of the Q69L mutant of GDP-Ran shows a major conformational change in the switch II loop that accounts for its failure to bind nuclear transport factor 2 (NTF2).

Stewart, M.Kent, H.M.McCoy, A.J.

(1998) J Mol Biol 284: 1517-1527

  • DOI: https://doi.org/10.1006/jmbi.1998.2204
  • Primary Citation of Related Structures:  
    1BYU, 3RAN

  • PubMed Abstract: 

    We report the 2.3 A resolution X-ray crystal structure of the GDP-bound form of the RanQ69L mutant that is used extensively in studies of nucleocytoplasmic transport and cell-cycle progression. When the structure of GDP-RanQ69L from monoclinic crystals with P21 symmetry was compared with the structure of wild-type Ran obtained from monoclinic crystals, the Q69L mutant showed a large conformational change in residues 68-74, which are in the switch II region of the molecule which changes conformation in response to nucleotide state and which forms the major interaction interface with nuclear transport factor 2 (NTF2, sometimes called p10). This conformational change alters the positions of key residues such as Lys71, Phe72 and Arg76 that are crucial for the interaction of GDP-Ran with NTF2 and indeed, solution binding studies were unable to detect any interaction between NTF2 and GDP-RanQ69L under conditions where GDP-Ran bound effectively. This interaction between NTF2 and GDP-Ran is required for efficient nuclear protein import and may function between the docking and translocation steps of the pathway.

  • Organizational Affiliation

    MRC Laboratory of Molecular Biology, Hills Rd., Cambridge, CB2 2QH, England.ms@mrc-lmb.cam.ac.uk

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
216Canis lupus familiarisMutation(s): 1 
Gene Names: RAN
EC: 3.6.5
Find proteins for P62825 (Canis lupus familiaris)
Explore P62825 
Go to UniProtKB:  P62825
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP62825
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.15 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.176 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.09α = 90
b = 59.17β = 100.68
c = 116.37γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-12-02
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-11-03
    Changes: Database references, Derived calculations