1YRG

THE CRYSTAL STRUCTURE OF RNA1P: A NEW FOLD FOR A GTPASE-ACTIVATING PROTEIN

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.66 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.228 

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This is version 1.5 of the entry. See complete history. 


Literature

The crystal structure of rna1p: a new fold for a GTPase-activating protein.

Hillig, R.C., Renault, L., Vetter, I.R., Drell 4th, T., Wittinghofer, A., Becker, J.

(1999) Mol Cell 3: 781-791

  • DOI: 10.1016/s1097-2765(01)80010-1
  • Primary Citation of Related Structures:  
    1YRG

  • PubMed Abstract: 

    • rna1p is the Schizosaccharomyces pombe ortholog of the mammalian GTPase-activating protein (GAP) of Ran. Both proteins are essential for nuclear transport. Here, we report the crystal structure of rna1p at 2.66 A resolution. It contains 11 leucine-rich repeats that adopt the nonglobular shape of a crescent, bearing no resemblance to RhoGAP or RasGAP ...

    rna1p is the Schizosaccharomyces pombe ortholog of the mammalian GTPase-activating protein (GAP) of Ran. Both proteins are essential for nuclear transport. Here, we report the crystal structure of rna1p at 2.66 A resolution. It contains 11 leucine-rich repeats that adopt the nonglobular shape of a crescent, bearing no resemblance to RhoGAP or RasGAP. The invariant residues of RanGAP form a contiguous surface, strongly indicating the Ran-binding interface. Alanine mutations identify Arg-74 as a critical residue for GTP hydrolysis. In contrast to RasGAP and RhoGAP, Arg-74 could be substituted by lysine and contributed significantly to the binding of Ran. Therefore, we suggest a GAP mechanism for rna1p, which constitutes a variation of the arginine finger mechanism found for Ras GAP and RhoGAP.

    Related Citations: 
    • RNA1 encodes a GTPase-activating protein specific for Gsp1p, the Ran/TC4 homologue of Saccharomyces cerevisiae.
      Becker, J., Melchior, F., Gerke, V., Bischoff, F.R., Ponstingl, H., Wittinghofer, A.
      (1995) J Biol Chem 270: 11860
    • A functional homologue of the RNA1 gene product in Schizosaccharomyces pombe: purification, biochemical characterization, and identification of a leucine-rich repeat motif.
      Melchior, F., Weber, K., Gerke, V.
      (1993) Mol Biol Cell 4: 569
    Organizational Affiliation: 

    Max-Planck-Institut für molekulare Physiologie, Abteilung Strukturelle Biologie, Dortmund, Germany.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GTPASE-ACTIVATING PROTEIN RNA1_SCHPOA, B385Schizosaccharomyces pombeMutation(s): 0 
UniProt
Find proteins for P41391 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Explore P41391 
Go to UniProtKB:  P41391
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.66 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.228 
  • Space Group: I 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 175.53α = 90
b = 175.53β = 90
c = 55.8γ = 90
Software Package:
Software NamePurpose
SOLVEphasing
MLPHAREphasing
SHARPphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-03-29
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-31
    Changes: Database references
  • Version 1.4: 2019-11-20
    Changes: Database references
  • Version 1.5: 2020-01-22
    Changes: Database references, Derived calculations