4M70

Crystal structure of potato Rx-CC domain in complex with RanGAP2-WPP domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.103 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.253 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis for the Interaction between the Potato Virus X Resistance Protein (Rx) and Its Cofactor Ran GTPase-activating Protein 2 (RanGAP2)

Hao, W.Collier, S.M.Moffett, P.Chai, J.

(2013) J.Biol.Chem. 288: 35868-35876

  • DOI: 10.1074/jbc.M113.517417

  • PubMed Abstract: 
  • The potato (Solanum tuberosum) disease resistance protein Rx has a modular arrangement that contains coiled-coil (CC), nucleotide-binding (NB), and leucine-rich repeat (LRR) domains and mediates resistance to potato virus X. The Rx N-terminal CC doma ...

    The potato (Solanum tuberosum) disease resistance protein Rx has a modular arrangement that contains coiled-coil (CC), nucleotide-binding (NB), and leucine-rich repeat (LRR) domains and mediates resistance to potato virus X. The Rx N-terminal CC domain undergoes an intramolecular interaction with the Rx NB-LRR region and an intermolecular interaction with the Rx cofactor RanGAP2 (Ran GTPase-activating protein 2). Here, we report the crystal structure of the Rx CC domain in complex with the Trp-Pro-Pro (WPP) domain of RanGAP2. The structure reveals that the Rx CC domain forms a heterodimer with RanGAP2, in striking contrast to the homodimeric structure of the CC domain of the barley disease resistance protein MLA10. Structure-based mutagenesis identified residues from both the Rx CC domain and the RanGAP2 WPP domain that are crucial for their interaction and function in vitro and in vivo. Our results reveal the molecular mechanism underlying the interaction of Rx with RanGAP2 and identify the distinct surfaces of the Rx CC domain that are involved in intramolecular and intermolecular interactions.


    Organizational Affiliation

    From the College of Biological Sciences, China Agricultural University, Beijing 100193, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Rx protein
A, L, I, H, Q
126Solanum tuberosumMutation(s): 0 
Gene Names: rx
Find proteins for Q9XGF5 (Solanum tuberosum)
Go to UniProtKB:  Q9XGF5
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ran GTPase activating protein 2
E, J, B, K
99Solanum tuberosumMutation(s): 0 
Gene Names: RanGAP2
Find proteins for I7JSB1 (Solanum tuberosum)
Go to UniProtKB:  I7JSB1
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Ran GTPase activating protein 2
R
99Solanum tuberosumMutation(s): 0 
Gene Names: RanGAP2
Find proteins for I7JSB1 (Solanum tuberosum)
Go to UniProtKB:  I7JSB1
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
UNK
Query on UNK
R
L-PEPTIDE LINKINGC4 H9 N O2

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.103 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.253 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 74.085α = 90.00
b = 91.142β = 101.26
c = 87.762γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data collection
PHASESphasing
PHENIXrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-08-12 
  • Released Date: 2013-11-13 
  • Deposition Author(s): Chai, J., Hao, W.

Revision History 

  • Version 1.0: 2013-11-13
    Type: Initial release
  • Version 1.1: 2014-01-22
    Type: Database references
  • Version 1.2: 2017-06-28
    Type: Source and taxonomy